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 SA7.0HE3/54

Name: SA7.0HE3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA7.0HE3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SA7.0HE3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

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

Datasheet:: SA7.0HE3/54.pdf

Description:: TVS DIODE 7VWM 13.3VC DO204AC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:7,381

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

Product details

Overview

SA7.0HE3/54 from Vishay is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for circuit protection against ESD and inductive switching transients. It features a 7.0 V stand-off voltage (V_WM), 7.78–8.60 V breakdown voltage (V_BR) at 10 mA, 41.7 A peak pulse current (I_PPM), and clamps to ≤12.0 V at rated surge, with AEC-Q101 qualification for automotive use.

For engineers reviewing the SA7.0HE3/54 datasheet, SA7.0HE3/54 pinout, SA7.0HE3/54 application, or SA7.0HE3/54 equivalent, this part serves as a robust, RoHS-compliant, high-reliability TVS for DC power rail and signal line protection where fast response (<1 ns), low clamping voltage, and 500 W 10/1000 μs surge capability are required.

Technical Context

The SA7.0HE3/54 operates as a uni-directional avalanche diode, conducting only in reverse bias above V_BR to shunt transient energy to ground. Its glass-passivated junction ensures stable leakage (<600 μA at V_WM) and repeatable breakdown behavior across temperature (−55 °C to +175 °C).

It delivers 500 W peak pulse power per 10/1000 μs waveform at T_A = 25 °C, with derating above 25 °C per published curve. The device supports 70 A non-repetitive forward surge (I_FSM) and exhibits low incremental clamping resistance, enabling effective suppression of fast-rising transients on 12 V automotive and industrial supply rails.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	7.0 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system rail margin for reliable standby operation.
V_BR (min/max)	7.78 V / 8.60 V at 10 mA - Confirmed breakdown range ensures predictable turn-on during overvoltage events without premature triggering.
I_PPM	41.7 A - Peak surge current it can safely divert under standardized 10/1000 μs transient, defining minimum PCB trace/solder joint robustness requirements.
V_C	≤12.0 V at I_PPM - Clamping voltage limits downstream IC stress; critical for protecting 12 V-rated components like microcontrollers and CAN transceivers.
P_PPM	500 W - Surge power handling capacity determines suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4 compliance designs.
T_J max	+175 °C - Maximum junction temperature enables deployment in under-hood automotive environments without thermal derating penalties.
Package	DO-204AC (DO-15) - Industry-standard axial leaded package with 0.300" lead spacing; compatible with through-hole assembly and manual rework.

Pinout & Package

DO-204AC (DO-15) package: axial-leaded, molded epoxy case with matte tin-plated leads; cathode indicated by color band on one end. Leads conform to J-STD-002 and JESD 22-B102 solderability standards; qualified to JESD 201 Class 2 whisker test (HE3 suffix).

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry / Reverse bias reference	Connected to protected line (e.g., 12 V rail); conducts during positive transients when used in reverse-biased configuration.
Cathode	Clamping node / Surge return path	Connected to ground or low-impedance return; sinks transient current and defines clamping voltage relative to GND.

Key Features

Feature	Design Value
Glass-passivated junction	Ensures stable V_BR tolerance and low leakage (<600 μA) over lifetime and temperature, critical for long-term reliability in sealed modules.
500 W peak pulse power (10/1000 μs)	Supports robust immunity to load dump and inductive kick events per ISO 16750-2 and SAE J1113-11 without degradation.
AEC-Q101 qualified	Validated for automotive applications including engine control units, body electronics, and ADAS sensors requiring zero-failure field performance.
Low clamping voltage (≤12.0 V)	Protects 12 V logic interfaces (e.g., LIN, CAN FD PHY, sensor analog front-ends) without exceeding absolute maximum ratings of downstream ICs.
RoHS-compliant HE3 suffix	Meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability, enabling use in safety-critical and regulated industrial systems.

Applications

Automotive Power Rail Protection	Industrial Sensor Interface Protection
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 16750-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Uni-directional TVS placed between battery rail and ground, clamping transients within nanoseconds to prevent latch-up or gate oxide damage in MCU power inputs. Use Value: Limits rail voltage to ≤12.0 V during 41.7 A surges, preserving functionality of 12 V-rated PMICs and LDOs without requiring oversized input capacitors.	Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector interface, shunting fast transients before they reach op-amp or ADC input stages. Use Value: Sub-1 ns response and 600 μA max leakage at 7.0 V ensure signal integrity remains uncompromised during normal operation and transient events.
DC Motor Drive Flyback Suppression	Telecom Line Card Surge Protection
Use Scenario: Absorbing inductive kickback from brushed DC motors in HVAC actuators or seat controls. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs, conducting reverse current during turn-off to clamp voltage spikes. Use Value: Withstands 70 A single half-sine surge (8.3 ms), preventing MOSFET drain-source breakdown and reducing need for snubber RC networks.	Use Scenario: Safeguarding RS-485/RS-232 transceivers on telecom base station line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Paired with series impedance, provides primary-level protection on data lines referenced to local ground. Use Value: 500 W rating and 12.0 V clamping enable compliance with ITU-T K.20/21 secondary protection requirements without sacrificing data rate integrity.

Automotive Power Rail Protection

Industrial Sensor Interface Protection

Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 16750-2 Pulse 5a) and alternator ripple.

IC Role / Device Role / Timing Role: Uni-directional TVS placed between battery rail and ground, clamping transients within nanoseconds to prevent latch-up or gate oxide damage in MCU power inputs.

Use Value: Limits rail voltage to ≤12.0 V during 41.7 A surges, preserving functionality of 12 V-rated PMICs and LDOs without requiring oversized input capacitors.

Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events.

IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector interface, shunting fast transients before they reach op-amp or ADC input stages.

Use Value: Sub-1 ns response and 600 μA max leakage at 7.0 V ensure signal integrity remains uncompromised during normal operation and transient events.

DC Motor Drive Flyback Suppression

Telecom Line Card Surge Protection

Use Scenario: Absorbing inductive kickback from brushed DC motors in HVAC actuators or seat controls.

IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs, conducting reverse current during turn-off to clamp voltage spikes.

Use Value: Withstands 70 A single half-sine surge (8.3 ms), preventing MOSFET drain-source breakdown and reducing need for snubber RC networks.

Use Scenario: Safeguarding RS-485/RS-232 transceivers on telecom base station line cards exposed to lightning-induced surges.

IC Role / Device Role / Timing Role: Paired with series impedance, provides primary-level protection on data lines referenced to local ground.

Use Value: 500 W rating and 12.0 V clamping enable compliance with ITU-T K.20/21 secondary protection requirements without sacrificing data rate integrity.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ7.0A-E3/54	Same V_WM (7.0 V), identical DO-214AC (SMA) package; 400 W P_PPM, slightly higher V_C (12.5 V).	Surface-mount alternative; requires PCB re-layout; lower surge rating reduces margin for severe load dump.	Select for space-constrained designs where automated SMT assembly is mandatory and 400 W suffices.
1.5KE7.0A	Higher P_PPM (1500 W), DO-201AD package; same V_WM/V_BR range but larger footprint and higher V_C (12.6 V).	Used in legacy industrial power supplies; less suitable for automotive due to lack of AEC-Q101 qualification.	Choose when higher surge endurance is needed and AEC-Q101 is not required; verify thermal relief for 3.0 W steady-state dissipation.

Compared with SMAJ7.0A-E3/54 and 1.5KE7.0A, SA7.0HE3/54 uniquely combines AEC-Q101 qualification, DO-15 through-hole compatibility, and precise 12.0 V clamping-making it optimal for new automotive and high-reliability industrial designs requiring proven field performance and ease of manual repair.

Availability

SA7.0HE3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor module production, and telecom line card manufacturing requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for SA7.0HE3/54 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, MOSFETs, and passive components with emphasis on reliability, efficiency, and application-specific optimization.

The SAxxA series is engineered for robust transient suppression in harsh environments-targeting automotive, industrial automation, and communications infrastructure where failure modes must be eliminated through AEC-Q101 validation and controlled process manufacturing.

FAQ

What is the maximum clamping voltage of SA7.0HE3/54 under rated surge conditions?

The SA7.0HE3/54 has a maximum clamping voltage (V_C) of 12.0 V when subjected to its rated peak pulse current (I_PPM) of 41.7 A using the standard 10/1000 μs waveform. This value is measured per Vishay's datasheet Figure 7 and guarantees that downstream components see no more than 12.0 V during transient events, making SA7.0HE3/54 suitable for protecting 12 V logic and analog circuits.

Is SA7.0HE3/54 qualified for automotive applications?

Yes, SA7.0HE3/54 carries the HE3 suffix, which denotes AEC-Q101 qualification per Vishay's documentation. This certification confirms that SA7.0HE3/54 has passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life-ensuring suitability for under-hood and cabin-mounted automotive electronics such as body control modules and sensor interfaces.

What does the "HE3" suffix indicate in SA7.0HE3/54?

The "HE3" suffix in SA7.0HE3/54 specifies RoHS-compliant construction with JESD 201 Class 2 whisker resistance, AEC-Q101 qualification, and matte tin-plated leads meeting J-STD-002 solderability standards. It distinguishes SA7.0HE3/54 from commercial-grade "E3" variants and confirms suitability for high-reliability automotive and industrial deployments where long-term interconnect integrity is mandatory.

Can SA7.0HE3/54 be used for bi-directional transient protection?

No, SA7.0HE3/54 is a uni-directional TVS diode, as confirmed by its "A" suffix and absence of "CA" designation. It conducts only in reverse bias and must be oriented with cathode toward the protected line's ground reference. For bi-directional protection (e.g., AC lines or differential buses), SA7.0CA variants exist-but SA7.0HE3/54 itself is strictly uni-directional and unsuitable without external polarity management.

What is the steady-state power dissipation rating of SA7.0HE3/54?

The SA7.0HE3/54 has a steady-state power dissipation (P_D) rating of 3.0 W when mounted on an infinite heatsink at lead temperature (T_L) = 75 °C, per Figure 5 in the Vishay datasheet. This rating governs continuous leakage-related heating and must be considered alongside ambient temperature and PCB copper area to avoid exceeding the +175 °C maximum junction temperature in SA7.0HE3/54 operation.

SA7.0HE3/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

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

Series:: TransZorb®

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 7V

Voltage - Breakdown (Min):: 7.78V

Voltage - Clamping (Max) @ Ipp:: 13.3V

Current - Peak Pulse (10/1000µs):: 37.6A

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)

SA7.0HE3/54 FAQ

1.How can I place an order for SA7.0HE3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA7.0HE3/54 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 SA7.0HE3/54 reliable?

The price and inventory of SA7.0HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA7.0HE3/54 is usually 5 days.

3.What payment methods are accepted for SA7.0HE3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.0HE3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA7.0HE3/54?

SA7.0HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA7.0HE3/54 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 SA7.0HE3/54?

For technical support, including SA7.0HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.0HE3/54 requirements.

6.How does Aetrix verify that SA7.0HE3/54 is sourced from the original manufacturer or authorized distributors?

All SA7.0HE3/54 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 SA7.0HE3/54 meets industry standards.

7.What is the process for return or replacement of SA7.0HE3/54?

All SA7.0HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.0HE3/54, 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 SA7.0HE3/54 part is unused and in its original packaging.

Return procedure for SA7.0HE3/54:

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 …