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

Vishay General Semiconductor - Diodes Division SA90HE3/54

Name: SA90HE3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA90HE3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA90HE3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

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

Datasheet:: SA90HE3/54.pdf

Description:: TVS DIODE 90VWM 160VC DO204AC

Quantity:: RFQ Add To RFQ list

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Inventory:2,232

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Product details

Overview

SA90HE3/54 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for clamping voltage transients on signal or power lines. It features 500 W peak pulse power (10/1000 μs), 90 V stand-off voltage (V_WM), 100–111 V breakdown voltage (V_BR), and clamps to ≤146 V at 3.4 A peak pulse current - deployed in automotive sensor protection and industrial I/O interfaces.

For engineers reviewing the SA90HE3/54 datasheet, SA90HE3/54 pinout, SA90HE3/54 application, or SA90HE3/54 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, DO-15 mechanical data, clamping performance curves, and direct alternatives for ESD/surge protection design-in.

Technical Context

The SA90HE3/54 operates as a bi-directional avalanche diode with symmetrical clamping in both polarities, enabling transient suppression on AC-coupled or floating lines without polarity concerns. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at 90 V), while the 175 °C max junction temperature supports under-hood automotive deployment.

It delivers 500 W peak pulse power per 10/1000 μs waveform at T_A = 25 °C, derating linearly above 25 °C per Fig. 2, and sustains 3.0 W steady-state dissipation at lead temperature (T_L) = 75 °C. The device meets AEC-Q101 stress test requirements and JESD 201 Class 2 whisker resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	90 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for 90 V nominal bus lines.
V_BR (min/max)	100 V / 111 V at 1.0 mA - Confirmed breakdown threshold range; ensures reliable turn-on before system damage occurs.
V_C @ I_PPM	≤146 V at 3.4 A - Clamped voltage during 10/1000 μs surge; guarantees downstream ICs see <146 V under rated transient.
P_PPM	500 W - Peak pulse power handling capability; supports common IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on protected lines.
I_D @ V_WM	≤1.0 μA - Reverse leakage at 90 V; minimizes standby power loss and avoids false triggering in high-impedance circuits.
T_J max	+175 °C - Maximum junction temperature; enables use in engine control units and under-hood modules without thermal derating.
Qualification	AEC-Q101 qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT.

Pinout & Package

SA90HE3/54 uses the DO-204AC (DO-15) axial-leaded package: molded epoxy body, matte tin-plated leads solderable per J-STD-002, UL 94 V-0 rated compound, and no polarity marking (bi-directional).

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (unmarked)	Bi-directional avalanche junction terminals	No functional distinction - either lead serves as input/output; symmetric clamping behavior in both directions.
Leads (both)	Connection interface to PCB traces or harness wires	Supports manual or automated through-hole assembly; withstands 275 °C solder dip (10 s) per JESD 22-B106.

Key Features

Feature	Design Value
Glass-passivated chip junction	Ensures stable V_BR over lifetime and immunity to humidity-induced parameter drift in harsh environments.
500 W peak pulse power (10/1000 μs)	Handles repetitive lightning-induced surges per IEC 61000-4-5 without degradation when operated within duty cycle limits.
AEC-Q101 qualification	Validates reliability for automotive applications including powertrain, chassis, and ADAS sensor interfaces.
Low incremental surge resistance	Minimizes V_C overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection margin.
JESD 201 Class 2 whisker resistance	Prevents tin whisker growth under thermal cycling, critical for long-life automotive and industrial deployments.

Applications

Automotive Sensor Protection	Industrial PLC I/O Protection
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional clamping element placed at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Limits voltage to ≤146 V during 3.4 A surges, preserving integrity of 5 V or 3.3 V microcontrollers and ADC front-ends.	Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring faults and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact or PNP/NPN input channels, mounted adjacent to terminal block. Use Value: Withstands 500 W pulses without failure, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards.
Telecom Line Interface	Consumer Appliance Motor Control
Use Scenario: Shielding RS-485 transceivers and Ethernet PHY magnetics from induced surges on building-wide cabling in security or HVAC systems. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) in hybrid protection schemes for telecom-grade robustness. Use Value: Fast response time and low clamping voltage reduce stress on upstream GDT and downstream silicon, extending overall protection lifespan.	Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, vacuum cleaners, and power tools. IC Role / Device Role / Timing Role: Across-the-line suppressor bridging motor terminals to absorb inductive kickback energy during PWM switching. Use Value: 175 °C junction rating allows mounting near hot motor windings; DO-15 form factor fits constrained board space near motor drivers.

Automotive Sensor Protection

Industrial PLC I/O Protection

Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs.

IC Role / Device Role / Timing Role: Bi-directional clamping element placed at connector entry point to shunt transients before reaching signal conditioning circuitry.

Use Value: Limits voltage to ≤146 V during 3.4 A surges, preserving integrity of 5 V or 3.3 V microcontrollers and ADC front-ends.

Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring faults and relay coil flyback.

IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact or PNP/NPN input channels, mounted adjacent to terminal block.

Use Value: Withstands 500 W pulses without failure, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards.

Telecom Line Interface

Consumer Appliance Motor Control

Use Scenario: Shielding RS-485 transceivers and Ethernet PHY magnetics from induced surges on building-wide cabling in security or HVAC systems.

IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) in hybrid protection schemes for telecom-grade robustness.

Use Value: Fast response time and low clamping voltage reduce stress on upstream GDT and downstream silicon, extending overall protection lifespan.

Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, vacuum cleaners, and power tools.

IC Role / Device Role / Timing Role: Across-the-line suppressor bridging motor terminals to absorb inductive kickback energy during PWM switching.

Use Value: 175 °C junction rating allows mounting near hot motor windings; DO-15 form factor fits constrained board space near motor drivers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ90CA	Same V_WM (90 V), higher P_PPM (600 W), SMB package (surface-mount), lower I_PPM (6.5 A vs. 3.4 A at same V_C).	Requires PCB re-layout for SMD footprint; better suited for high-density consumer boards than through-hole industrial designs.	Select SMBJ90CA when board space is constrained and automated SMT assembly is used; verify thermal pad layout for 600 W dissipation.
1.5KE91CA	Same V_WM (91 V), identical DO-204AC package, but higher P_PPM (1500 W), larger case volume, and higher V_C (150 V @ 9.9 A).	Offers higher surge margin for infrequent high-energy events (e.g., utility grid coupling), but less precise clamping for sensitive ICs.	Choose 1.5KE91CA where ultimate energy handling outweighs tight clamping; avoid where <146 V clamping is mandatory for 3.3 V logic.

Compared with SMBJ90CA and 1.5KE91CA, SA90HE3/54 provides AEC-Q101 qualification and JESD 201 Class 2 whisker resistance out-of-box - making it the preferred choice for automotive and long-lifecycle industrial applications requiring proven reliability, not just electrical equivalence.

Availability

SA90HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and appliance motor drive circuits requiring stable component supply across multi-year production cycles.

Supply support for SA90HE3/54 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, power efficiency, and automotive-grade qualification.

The SAxx series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure where repeatable clamping and AEC-Q101 compliance are mandatory.

FAQ

What is the polarity configuration of SA90HE3/54?

The SA90HE3/54 is a bi-directional TVS diode with no polarity marking on the DO-204AC package. Its symmetrical avalanche structure provides identical clamping behavior in both forward and reverse directions, making it ideal for AC signal lines, differential buses like CAN, and floating power rails where polarity cannot be guaranteed.

Does SA90HE3/54 meet automotive reliability standards?

Yes, SA90HE3/54 is AEC-Q101 qualified and meets JESD 201 Class 2 whisker resistance requirements. It has passed high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling tests - confirming suitability for under-hood and chassis-mounted automotive electronics per industry stress protocols.

What is the maximum clamping voltage for SA90HE3/54 under surge conditions?

The SA90HE3/54 clamps to a maximum of 146 V when subjected to its rated peak pulse current of 3.4 A (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88378) and defines the upper voltage limit imposed on protected circuitry during transient events.

Can SA90HE3/54 replace SA90A in a design?

No - SA90HE3/54 is bi-directional (CA suffix), while SA90A is uni-directional (A suffix). Substituting SA90HE3/54 for SA90A introduces unnecessary conduction in forward bias and may disrupt DC biasing in uni-directional applications. Always match suffix: 'A' for uni-directional, 'CA' for bi-directional.

What packaging format does SA90HE3/54 ship in?

SA90HE3/54 ships in 13" diameter paper tape and reel format with a base quantity of 4000 pieces per reel (ordering code /54). The 'HE3' suffix denotes RoHS-compliant, AEC-Q101-qualified construction with JESD 201 Class 2 whisker resistance - confirmed in Vishay's ordering information table on page 3 of document 88378.

SA90HE3/54 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):: 90V

Voltage - Breakdown (Min):: 100V

Voltage - Clamping (Max) @ Ipp:: 160V

Current - Peak Pulse (10/1000µs):: 3.1A

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)

SA90HE3/54 FAQ

1.How can I place an order for SA90HE3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA90HE3/54 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 SA90HE3/54 reliable?

The price and inventory of SA90HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA90HE3/54 is usually 5 days.

3.What payment methods are accepted for SA90HE3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA90HE3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA90HE3/54?

SA90HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA90HE3/54 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 SA90HE3/54?

For technical support, including SA90HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA90HE3/54 requirements.

6.How does Aetrix verify that SA90HE3/54 is sourced from the original manufacturer or authorized distributors?

All SA90HE3/54 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 SA90HE3/54 meets industry standards.

7.What is the process for return or replacement of SA90HE3/54?

All SA90HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA90HE3/54, 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 SA90HE3/54 part is unused and in its original packaging.

Return procedure for SA90HE3/54:

1.Submit a request within 90 days.

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

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