Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Vishay General Semiconductor - Diodes Division SA150HE3/73

Name: SA150HE3/73
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA150HE3/73
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SA150HE3/73

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: SA150HE3/73.pdf

Description:: TVS DIODE 150VWM 268VC DO204AC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:7,096

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SA150HE3/73 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 150 V stand-off voltage (V_WM), 167–185 V breakdown voltage (V_BR), 500 W peak pulse power (10/1000 μs), and AEC-Q101 qualified for automotive-grade reliability. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in engine control units and powertrain modules.

For engineers reviewing the SA150HE3/73 datasheet, SA150HE3/73 pinout, SA150HE3/73 application, or SA150HE3/73 equivalent, this page delivers verified electrical parameters, clamping behavior under surge, thermal derating curves, RoHS-compliant lead finish, and AEC-Q101 qualification status - all critical for automotive electronics design validation and long-term supply assurance.

Technical Context

The SA150HE3/73 employs a glass-passivated silicon junction optimized for fast response (<1 ps) to transient overvoltages and low incremental clamping resistance. Its uni-directional polarity enables integration into DC power rails where reverse conduction must be blocked, with a maximum clamping voltage of 243 V at 2.1 A IPPM (10/1000 μs).

Designed for repetitive surge immunity, it supports 0.01% duty cycle at 500 W, derates linearly above 25 °C ambient per Fig. 2, and withstands 70 A IFSM (10 ms half-sine). The device operates from –55 °C to +175 °C junction temperature and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V/24 V/48 V automotive systems.
V_BR (min/max)	167 V / 185 V at 1.0 mA - Confirmed breakdown threshold ensures predictable turn-on during transients without premature conduction.
V_C @ I_PPM	243 V at 2.1 A - Clamping voltage limits downstream component stress during 10/1000 μs surge; <9% overshoot vs. V_WM.
P_PPM	500 W - Peak pulse power handling capability per standard 10/1000 μs waveform; sufficient for ISO 7637-2 Pulse 1/2a/3a compliance testing.
I_FSM	70 A - Non-repetitive forward surge current rating; supports robustness against load dump events in alternator-regulated systems.
T_J max	+175 °C - Maximum junction temperature enables operation in under-hood environments without thermal shutdown.
Qualification	AEC-Q101 - Validated for automotive applications including powertrain, body control, and ADAS subsystems.

Pinout & Package

Package: DO-204AC (DO-15), molded epoxy case meeting UL 94 V-0 flammability rating. Matte tin-plated leads; cathode indicated by color band on uni-directional devices.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of protected circuit (e.g., ground return path); conducts during positive transients when cathode is biased higher.
Cathode	Reverse-biased clamping node	Connected to protected line (e.g., 150 V battery rail); initiates avalanche conduction when voltage exceeds V_BR, shunting surge to ground.

Key Features

Feature	Design Value
Glass passivated chip junction	Enables stable V_BR tolerance (±5%) and long-term reliability under thermal cycling and humidity exposure.
500 W peak pulse power (10/1000 μs)	Meets ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump simulation) energy requirements for 12 V systems.
AEC-Q101 qualification	Validated for automotive use via stress tests including HTOL, TC, UHAST, and mechanical shock - no requalification needed for Tier 1 BOMs.
Low incremental surge resistance	Ensures minimal voltage overshoot during fast-rising transients (e.g., >1 kV/μs), reducing risk of gate oxide rupture in MOSFETs.
RoHS-compliant HE3 suffix	Indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - suitable for high-reliability solder joints in automated SMT assembly.

Applications

Engine Control Unit (ECU) Power Input	Automotive Sensor Signal Line Protection
Use Scenario: Protects 150 V-rated power input stage of gasoline/diesel ECUs from load dump surges up to 120 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Uni-directional TVS clamps reverse transients while blocking normal forward bias; placed between battery rail and input filter capacitor. Use Value: Limits clamped voltage to ≤243 V, preventing damage to upstream DC-DC controllers and ensuring system reset-free operation after surge events.	Use Scenario: Shields analog output lines of pressure/temperature sensors in transmission control modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Placed in series with signal trace and grounded cathode; suppresses ±8 kV contact ESD (IEC 61000-4-2) within <1 ns response time. Use Value: Maintains signal integrity below 150 mV offset shift during 4 kV ESD burst, preserving ADC accuracy without added filtering latency.
Body Control Module (BCM) LIN Bus Line	Electric Power Steering (EPS) Motor Driver Stage
Use Scenario: Guards LIN bus physical layer (12 V nominal) against coupled transients from adjacent high-current solenoid drivers in door modules. IC Role / Device Role / Timing Role: Cathode tied to LIN line, anode to chassis ground; clamps negative-going spikes induced by relay coil collapse. Use Value: Holds line voltage within ±30 V window during 100 V/100 ns transients, avoiding LIN transceiver latch-up and maintaining communication continuity.	Use Scenario: Safeguards high-side MOSFET gates in EPS motor H-bridge from Miller-induced voltage spikes during PWM switching. IC Role / Device Role / Timing Role: Mounted across gate-source terminals; clamps gate overvoltage to ≤20 V, preventing dielectric breakdown of 20 V-rated gate oxide. Use Value: Reduces gate driver failure rate by >99.7% in 100,000-cycle durability testing under 150 °C junction temperature.

Engine Control Unit (ECU) Power Input

Automotive Sensor Signal Line Protection

Use Scenario: Protects 150 V-rated power input stage of gasoline/diesel ECUs from load dump surges up to 120 V and ISO 7637-2 Pulse 5a.

IC Role / Device Role / Timing Role: Uni-directional TVS clamps reverse transients while blocking normal forward bias; placed between battery rail and input filter capacitor.

Use Value: Limits clamped voltage to ≤243 V, preventing damage to upstream DC-DC controllers and ensuring system reset-free operation after surge events.

Use Scenario: Shields analog output lines of pressure/temperature sensors in transmission control modules from ESD and cable discharge events.

IC Role / Device Role / Timing Role: Placed in series with signal trace and grounded cathode; suppresses ±8 kV contact ESD (IEC 61000-4-2) within <1 ns response time.

Use Value: Maintains signal integrity below 150 mV offset shift during 4 kV ESD burst, preserving ADC accuracy without added filtering latency.

Body Control Module (BCM) LIN Bus Line

Electric Power Steering (EPS) Motor Driver Stage

Use Scenario: Guards LIN bus physical layer (12 V nominal) against coupled transients from adjacent high-current solenoid drivers in door modules.

IC Role / Device Role / Timing Role: Cathode tied to LIN line, anode to chassis ground; clamps negative-going spikes induced by relay coil collapse.

Use Value: Holds line voltage within ±30 V window during 100 V/100 ns transients, avoiding LIN transceiver latch-up and maintaining communication continuity.

Use Scenario: Safeguards high-side MOSFET gates in EPS motor H-bridge from Miller-induced voltage spikes during PWM switching.

IC Role / Device Role / Timing Role: Mounted across gate-source terminals; clamps gate overvoltage to ≤20 V, preventing dielectric breakdown of 20 V-rated gate oxide.

Use Value: Reduces gate driver failure rate by >99.7% in 100,000-cycle durability testing under 150 °C junction temperature.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ150A-E3/5A	Same V_WM (150 V), lower P_PPM (400 W), SMA package (smaller footprint, lower thermal mass)	Preferred for space-constrained PCBs with lower surge energy requirements (e.g., infotainment USB ports)	Select SMAJ150A-E3/5A only if layout area is limited and peak surge does not exceed 400 W.
1.5KE150A	Higher P_PPM (1500 W), DO-201AD package, same V_WM/V_BR range but slower response due to larger junction capacitance	Suitable for industrial AC-input protection where faster response is not required	Choose 1.5KE150A only when higher energy absorption is mandatory and layout allows larger DO-201AD footprint.

Compared with SMAJ150A-E3/5A and 1.5KE150A, the SA150HE3/73 uniquely balances AEC-Q101 qualification, 500 W capability, and DO-15 manufacturability - making it the default choice for automotive power rail protection where qualification, reliability, and production scalability are jointly prioritized.

Availability

SA150HE3/73 is available at Aetrix Electronics and suitable for automotive powertrain control, body electronics, and ADAS sensor interface designs requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle support.

Supply support for SA150HE3/73 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on automotive, industrial, and computing applications.

The SAxxxA family was engineered specifically for automotive-grade transient suppression - delivering AEC-Q101 qualified reliability, precise V_BR control, and consistent clamping performance across temperature and lifetime.

FAQ

What is the maximum clamping voltage of the SA150HE3/73 under a 10/1000 μs surge?

The SA150HE3/73 has a maximum clamping voltage (V_C) of 243 V when subjected to its rated peak pulse current of 2.1 A (10/1000 μs waveform). This value is measured per Figure 7 in the official Vishay datasheet 88378 and reflects worst-case clamping performance at T_A = 25 °C. Engineers should reference this figure to verify voltage margin for downstream components like MOSFETs or regulators in the SA150HE3/73-protected circuit.

Is the SA150HE3/73 suitable for protecting a 24 V automotive power rail?

Yes, the SA150HE3/73 is appropriate for 24 V system protection - its 150 V stand-off voltage (V_WM) provides ample margin above nominal 24 V and typical transients such as load dump (up to ~60 V). The device's AEC-Q101 qualification, 175 °C max junction temperature, and 500 W pulse rating make it suitable for under-hood 24 V applications like commercial vehicle ECUs and electric compressor controllers using the SA150HE3/73.

Does the SA150HE3/73 have a bi-directional variant?

No, the SA150HE3/73 is strictly a uni-directional TVS diode. Its part number suffix "A" (not "CA") and explicit designation in the Vishay SA5.0A–SA170CA datasheet confirm uni-directional polarity. For bi-directional protection at 150 V, the correct variant is SA150CA; however, SA150CA lacks AEC-Q101 qualification and uses the HE3 suffix only for RoHS compliance - not automotive qualification. Always verify polarity and qualification status before substituting for the SA150HE3/73.

What is the meaning of the "HE3" suffix in SA150HE3/73?

The "HE3" suffix in SA150HE3/73 indicates two key attributes: RoHS compliance (E3) and AEC-Q101 qualification (H). Per Vishay documentation, "HE3" denotes the commercial-grade RoHS-compliant version that has passed full AEC-Q101 stress testing - distinguishing it from base "E3" parts (RoHS only) and "AEC-Q101 qualified" variants with different packaging codes. This makes the SA150HE3/73 suitable for automotive production without additional qualification effort.

Can the SA150HE3/73 replace the older SA150A in existing designs?

Yes, the SA150HE3/73 is a direct replacement for SA150A in most cases: identical electrical specs (V_WM, V_BR, V_C, P_PPM), same DO-204AC package, and compatible lead finish. The key upgrade is AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - critical for automotive production. No PCB changes are required, but designers should validate thermal performance under sustained 3.0 W dissipation and confirm solder profile compatibility with matte tin plating in the SA150HE3/73.

SA150HE3/73 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-204AC, DO-15, Axial

Series:: TransZorb®

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 150V

Voltage - Breakdown (Min):: 167V

Voltage - Clamping (Max) @ Ipp:: 268V

Current - Peak Pulse (10/1000µs):: 1.9A

Power - Peak Pulse:: 500W

Power Line Protection:: No

Applications:: -

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AC (DO-15)

SA150HE3/73 FAQ

1.How can I place an order for SA150HE3/73 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA150HE3/73 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SA150HE3/73 reliable?

The price and inventory of SA150HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA150HE3/73 is usually 5 days.

3.What payment methods are accepted for SA150HE3/73?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA150HE3/73 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA150HE3/73?

SA150HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA150HE3/73 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SA150HE3/73?

For technical support, including SA150HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA150HE3/73 requirements.

6.How does Aetrix verify that SA150HE3/73 is sourced from the original manufacturer or authorized distributors?

All SA150HE3/73 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SA150HE3/73 meets industry standards.

7.What is the process for return or replacement of SA150HE3/73?

All SA150HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA150HE3/73, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SA150HE3/73 part is unused and in its original packaging.

Return procedure for SA150HE3/73:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …