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 1.5KA15HE3/54

Name: 1.5KA15HE3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: 1.5KA15HE3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: 1.5KA15HE3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-201AA, DO-27, Axial

Datasheet:: 1.5KA15HE3/54.pdf

Description:: TVS DIODE 12.1VWM 22VC 1.5KA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:5,489

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

Product details

Overview

1.5KA15HE3/54 from Vishay General Semiconductor is an automotive-grade unidirectional transient voltage suppressor (TVS) diode in the 1.5KA case style, rated for 1500 W peak pulse power (10/1000 µs), 13.5–16.3 V breakdown voltage (V_BR), and 185 °C maximum junction temperature. It provides robust clamping for inductive load switching transients on automotive sensor signal lines and MOSFET gate drivers.

For engineers reviewing the 1.5KA15HE3/54 datasheet, 1.5KA15HE3/54 pinout, 1.5KA15HE3/54 application, or 1.5KA15HE3/54 equivalent, key selection criteria include AEC-Q101 qualification, 22.0 V max clamping voltage at 68.2 A IPPM, RoHS-compliant HE3 packaging, and 1.0 µA reverse leakage at 12.1 V stand-off voltage.

Technical Context

This TVS diode uses patented PAR® construction for high-temperature stability and low incremental surge resistance. Its unidirectional polarity enables precise reverse-biased clamping during positive transients, with fast response time and excellent clamping ratio (V_C/V_BR ≈ 1.63).

Designed for automotive environments, it operates across –65 °C to +185 °C, meets JESD201 Class 2 whisker resistance, and sustains 200 A non-repetitive forward surge current (8.3 ms half-sine). The molded epoxy package complies with UL 94 V-0.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR (min/max)	13.5 V / 16.3 V - defines reliable turn-on threshold for transient suppression above normal operating voltage
V_C @ I_PPM	22.0 V - maximum clamped voltage seen by protected circuit during 68.2 A 10/1000 µs surge
P_PPM	1500 W - peak transient energy handling capacity under standardized 10/1000 µs waveform
I_PPM	68.2 A - peak surge current capability before clamping voltage exceeds 22.0 V
V_WM	12.1 V - maximum continuous reverse working voltage without significant leakage
I_D @ V_WM	1.0 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits
T_J max.	+185 °C - supports under-hood automotive placement without thermal derating penalties

Pinout & Package

Package: Case Style 1.5KA - axial-leaded, molded epoxy body with matte tin-plated leads; RoHS-compliant HE3 suffix denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance. Cathode indicated by color band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction path during positive transients	Connected to ground or low-impedance return path to shunt surge current away from protected IC
Cathode	Clamping node for reverse-biased operation	Connected to protected line (e.g., sensor output); conducts when line voltage exceeds V_BR

Key Features

Feature	Design Value
Patented PAR® construction	Enables stable V_BR and low dynamic impedance over lifetime and temperature cycling
AEC-Q101 qualified	Validated for automotive under-hood use including thermal shock, humidity, and mechanical vibration
1500 W peak pulse power	Handles ISO 7637-2 Pulse 1/2a/3a transients without degradation in engine control modules
Low incremental surge resistance	Minimizes V_C overshoot during fast-rising transients (<1 ns rise time)
UL 94 V-0 molding compound	Prevents flame propagation in enclosed automotive enclosures during fault conditions

Applications

Automotive Sensor Protection	Power Supply Input Clamping
Use Scenario: Protecting analog output lines of crankshaft position sensors exposed to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and ECU input. Use Value: Limits transient voltage to ≤22.0 V, preventing latch-up or damage to 3.3 V/5 V ADC front-ends while maintaining <1.0 µA leakage at 12.1 V nominal rail.	Use Scenario: Safeguarding 12 V automotive power supply inputs against load dump and alternator ripple spikes. IC Role / Device Role / Timing Role: Primary transient suppressor on main power rail upstream of DC/DC converters. Use Value: Absorbs 1500 W surges per ISO 16750-2 without failure, sustaining 185 °C junction temperature during extended engine-off hot soak.
MOSFET Gate Driver Protection	Industrial CAN Bus Line Protection
Use Scenario: Shielding high-side N-channel MOSFET gate drivers from cross-talk and inductive coupling in motor control H-bridges. IC Role / Device Role / Timing Role: Fast-response clamp between gate and source to limit dv/dt-induced false turn-on. Use Value: Responds within nanoseconds to clamp gate-source voltage to ≤22.0 V, preserving driver IC reliability under PWM switching noise.	Use Scenario: Adding secondary protection to CAN_H/CAN_L lines in commercial vehicle telematics modules subjected to ESD and cable discharge events. IC Role / Device Role / Timing Role: Secondary-level TVS on differential bus lines, complementing integrated CAN transceiver ESD structures. Use Value: Provides 1500 W surge margin beyond transceiver's internal 8 kV HBM rating, ensuring compliance with ISO 11898-2 EMC requirements.

Automotive Sensor Protection

Power Supply Input Clamping

Use Scenario: Protecting analog output lines of crankshaft position sensors exposed to inductive kickback from solenoid drivers.

IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and ECU input.

Use Value: Limits transient voltage to ≤22.0 V, preventing latch-up or damage to 3.3 V/5 V ADC front-ends while maintaining <1.0 µA leakage at 12.1 V nominal rail.

Use Scenario: Safeguarding 12 V automotive power supply inputs against load dump and alternator ripple spikes.

IC Role / Device Role / Timing Role: Primary transient suppressor on main power rail upstream of DC/DC converters.

Use Value: Absorbs 1500 W surges per ISO 16750-2 without failure, sustaining 185 °C junction temperature during extended engine-off hot soak.

MOSFET Gate Driver Protection

Industrial CAN Bus Line Protection

Use Scenario: Shielding high-side N-channel MOSFET gate drivers from cross-talk and inductive coupling in motor control H-bridges.

IC Role / Device Role / Timing Role: Fast-response clamp between gate and source to limit dv/dt-induced false turn-on.

Use Value: Responds within nanoseconds to clamp gate-source voltage to ≤22.0 V, preserving driver IC reliability under PWM switching noise.

Use Scenario: Adding secondary protection to CAN_H/CAN_L lines in commercial vehicle telematics modules subjected to ESD and cable discharge events.

IC Role / Device Role / Timing Role: Secondary-level TVS on differential bus lines, complementing integrated CAN transceiver ESD structures.

Use Value: Provides 1500 W surge margin beyond transceiver's internal 8 kV HBM rating, ensuring compliance with ISO 11898-2 EMC requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ15AHE3/52	Lower P_PPM (600 W), smaller SMB package, bidirectional option available	Limited to lower-energy transients; not AEC-Q101 qualified in all variants	Select when space-constrained PCB layout prioritizes footprint over automotive qualification
1.5KE15A	Same V_BR range but legacy DO-201 package; no HE3 whisker testing or AEC-Q101 validation	Suitable for industrial/commercial use only; lacks automotive thermal and reliability validation	Choose only for cost-sensitive non-automotive designs where 185 °C operation is not required

Compared with SMBJ15AHE3/52 and 1.5KE15A, the 1.5KA15HE3/54 delivers higher surge robustness (1500 W vs. 600 W or 1500 W without AEC-Q101), guaranteed whisker resistance, and validated performance up to +185 °C-making it the sole choice for mission-critical automotive signal line protection.

Availability

1.5KA15HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, power supply input stages, and MOSFET gate driver circuits requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.

Supply support for 1.5KA15HE3/54 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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.

The 1.5KA series was engineered specifically for automotive transient suppression, emphasizing AEC-Q101 qualification, high-temperature operation, and repeatable clamping performance under real-world inductive load switching conditions.

FAQ

What is the clamping voltage of the 1.5KA15HE3/54 under maximum surge conditions?

The 1.5KA15HE3/54 has a maximum clamping voltage (V_C) of 22.0 V at its rated peak pulse current (I_PPM) of 68.2 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 22.0 V during worst-case transients. The 1.5KA15HE3/54 maintains this clamping performance across its full operating temperature range.

Is the 1.5KA15HE3/54 qualified for automotive use?

Yes, the 1.5KA15HE3/54 is AEC-Q101 qualified and designated as high-reliability/automotive grade per its HE3 suffix. It undergoes rigorous stress testing-including temperature cycling, humidity bias, and mechanical shock-to meet automotive under-hood requirements. The 1.5KA15HE3/54 also complies with RoHS 2002/95/EC and passes JESD201 Class 2 whisker testing.

What does the "HE3" suffix mean on the 1.5KA15HE3/54?

The HE3 suffix on the 1.5KA15HE3/54 indicates RoHS-compliant, high-reliability/automotive-grade construction. Specifically, it certifies compliance with AEC-Q101, JESD201 Class 2 whisker resistance, and UL 94 V-0 flammability rating. The "54" in the full part number denotes the preferred package code: 13-inch paper tape and reel, 1400 units per reel.

How does the 1.5KA15HE3/54 differ from the 1.5KA15A variant?

The 1.5KA15HE3/54 and 1.5KA15A share identical electrical characteristics-including V_BR (13.5–16.3 V), V_C (22.0 V), and I_PPM (68.2 A)-but differ in qualification and construction. The 1.5KA15HE3/54 carries the HE3 suffix confirming AEC-Q101 qualification and JESD201 Class 2 whisker resistance; the 1.5KA15A lacks these automotive-specific validations.

What is the maximum operating temperature for the 1.5KA15HE3/54?

The 1.5KA15HE3/54 has a maximum junction temperature (T_J) of +185 °C and an operating storage range of –65 °C to +185 °C. This extended range supports direct placement near heat sources in automotive engine compartments and ensures stable V_BR and leakage performance without external heatsinking.

1.5KA15HE3/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-201AA, DO-27, Axial

Series:: PAR®

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 12.1V

Voltage - Breakdown (Min):: 13.5V

Voltage - Clamping (Max) @ Ipp:: 22V

Current - Peak Pulse (10/1000µs):: 68.2A

Power - Peak Pulse:: 1500W (1.5kW)

Power Line Protection:: No

Applications:: -

Capacitance @ Frequency:: -

Operating Temperature:: -65°C ~ 185°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: 1.5KA

1.5KA15HE3/54 FAQ

1.How can I place an order for 1.5KA15HE3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1.5KA15HE3/54 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 1.5KA15HE3/54 reliable?

The price and inventory of 1.5KA15HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA15HE3/54 is usually 5 days.

3.What payment methods are accepted for 1.5KA15HE3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA15HE3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1.5KA15HE3/54?

1.5KA15HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1.5KA15HE3/54 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 1.5KA15HE3/54?

For technical support, including 1.5KA15HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA15HE3/54 requirements.

6.How does Aetrix verify that 1.5KA15HE3/54 is sourced from the original manufacturer or authorized distributors?

All 1.5KA15HE3/54 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 1.5KA15HE3/54 meets industry standards.

7.What is the process for return or replacement of 1.5KA15HE3/54?

All 1.5KA15HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA15HE3/54, 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 1.5KA15HE3/54 part is unused and in its original packaging.

Return procedure for 1.5KA15HE3/54:

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 …