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

Vishay General Semiconductor - Diodes Division SA9.0CAHE3/54

Name: SA9.0CAHE3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA9.0CAHE3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA9.0CAHE3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

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

Datasheet:: SA9.0CAHE3/54.pdf

Description:: TVS DIODE 9VWM 15.4VC DO204AC

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Product details

Overview

SA9.0CAHE3/54 from Vishay General Semiconductor is a bidirectional TransZORB® transient voltage suppressor diode in DO-15 package, rated for 500 W peak pulse power (10/1000 μs), 9.0 V stand-off voltage (V_WM), and clamping voltage of 15.4 V at 32.5 A peak pulse current. It provides AEC-Q101 qualification and is used to protect automotive sensor signal lines against inductive switching transients.

For engineers reviewing the SA9.0CAHE3/54 datasheet, SA9.0CAHE3/54 pinout, SA9.0CAHE3/54 application, or SA9.0CAHE3/54 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge, AEC-Q101 compliance status, and direct alternatives with documented differences in breakdown voltage and leakage.

Technical Context

This device operates bidirectionally with symmetrical breakdown characteristics: minimum V_BR = 10.0 V and maximum V_BR = 11.1 V at 1.0 mA test current. Its clamping voltage is 15.4 V at 32.5 A IPPM, delivering low incremental surge resistance and fast response time typical of glass-passivated junction TVS diodes.

Designed for automotive-grade reliability, SA9.0CAHE3/54 features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, meets JESD 201 Class 2 whisker test (HE3 suffix), and supports operating junction temperatures from –55 °C to +175 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	9.0 V - Maximum reverse working voltage before clamping begins; defines safe operating range for protected circuit.
V_BR (min/max)	10.0 V / 11.1 V at 1.0 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events.
V_C @ I_PPM	15.4 V at 32.5 A - Clamping voltage limits stress on downstream ICs during 10/1000 μs transients.
P_PPM	500 W - Peak pulse power handling capability per standard 10/1000 μs waveform at 0.01% duty cycle.
I_D @ V_WM	5.0 μA - Low reverse leakage preserves signal integrity and minimizes standby power loss.
T_J Range	–55 °C to +175 °C - Enables deployment in under-hood automotive environments and industrial control cabinets.
AEC-Q101	Qualified - Validated for automotive electronics per stress test requirements including temperature cycling and HTRB.

Pinout & Package

DO-15 (DO-204AC) molded epoxy package with axial leads; no polarity marking for bidirectional operation. Dimensions: 3.3–3.5 mm diameter, 25.4 mm minimum body length, 6.15–6.55 mm lead spacing.

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (symmetrical)	Bidirectional conduction path	No designated anode/cathode; terminals interchangeable - enables placement without orientation check on PCB.
Lead 1 / Lead 2	Surge current entry/exit points	Both leads carry equal surge current magnitude in either direction; requires symmetric trace routing for balanced impedance.

Key Features

Feature	Design Value
Glass passivated chip junction	Enables stable V_BR tolerance and long-term reliability under thermal cycling and humidity exposure.
500 W peak pulse power (10/1000 μs)	Withstands common automotive load dump and ISO 7637-2 Pulse 1/2/5a surges without degradation.
AEC-Q101 qualified (HE3 suffix)	Validated for automotive applications including engine control units, ADAS sensors, and body electronics modules.
Low clamping ratio (V_C/V_WM = 1.71)	Minimizes overvoltage margin between protection threshold and IC absolute maximum ratings.
Matte tin plated leads	Ensures robust solderability per J-STD-002 and compatibility with lead-free reflow profiles.

Applications

Automotive Sensor Protection	Industrial PLC I/O Protection
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control modules from inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt transient energy to ground. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and analog front-ends during 100 V/500 ms load dump events.	Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Standoff voltage-aligned TVS placed between field input and optocoupler input stage to limit voltage excursion. Use Value: Maintains signal integrity by clamping transients to ≤15.4 V while drawing <5 μA leakage at 9.0 V nominal supply.
Telecom Line Interface	Consumer Appliance Motor Control
Use Scenario: Shielding RS-485 transceiver pins in base station backhaul equipment from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary-level protection device mounted at connector interface before series impedance and ESD diode array. Use Value: Absorbs up to 500 W surge energy without failure, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) testing.	Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards and HVAC blower modules. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp inductive kickback before reaching driver ICs. Use Value: Extends lifespan of half-bridge MOSFETs by limiting drain-source voltage overshoot to 15.4 V during 32.5 A turn-off events.

Automotive Sensor Protection

Industrial PLC I/O Protection

Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control modules from inductive switching spikes.

IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt transient energy to ground.

Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and analog front-ends during 100 V/500 ms load dump events.

Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to relay coil flyback and motor drive noise.

IC Role / Device Role / Timing Role: Standoff voltage-aligned TVS placed between field input and optocoupler input stage to limit voltage excursion.

Use Value: Maintains signal integrity by clamping transients to ≤15.4 V while drawing <5 μA leakage at 9.0 V nominal supply.

Telecom Line Interface

Consumer Appliance Motor Control

Use Scenario: Shielding RS-485 transceiver pins in base station backhaul equipment from lightning-induced surges on twisted-pair cabling.

IC Role / Device Role / Timing Role: Primary-level protection device mounted at connector interface before series impedance and ESD diode array.

Use Value: Absorbs up to 500 W surge energy without failure, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) testing.

Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards and HVAC blower modules.

IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp inductive kickback before reaching driver ICs.

Use Value: Extends lifespan of half-bridge MOSFETs by limiting drain-source voltage overshoot to 15.4 V during 32.5 A turn-off events.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ9.0AHE3/A	Unidirectional; same V_WM (9.0 V), but asymmetric conduction - requires correct polarity placement.	Not suitable for AC-coupled or differential signal lines where polarity reversal occurs.	Select only when protecting DC rails with known polarity and space-constrained SMC package is required.
1.5KE9.1A	Higher P_PPM (1500 W), larger DO-201 package, higher V_C (13.4 V at 113 A), no AEC-Q101 qualification.	Used in high-energy industrial power supplies; lacks automotive qualification and tighter V_BR tolerance.	Choose for non-automotive systems needing higher surge margin, accepting larger footprint and no automotive validation.

Compared with SMAJ9.0AHE3/A and 1.5KE9.1A, SA9.0CAHE3/54 uniquely combines bidirectional symmetry, AEC-Q101 qualification, and DO-15 form factor - making it optimal for automotive signal line protection where polarity-agnostic mounting and qualification are mandatory.

Availability

SA9.0CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor control requiring stable component supply and full traceability.

Supply support for SA9.0CAHE3/54 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices with emphasis on reliability, precision, and application-specific qualification.

The SAxxCA series is part of Vishay's TransZORB® family engineered specifically for bidirectional transient suppression in automotive, industrial, and communications systems where AEC-Q101 compliance and tight parameter control are critical.

FAQ

What is the breakdown voltage range for SA9.0CAHE3/54?

The SA9.0CAHE3/54 has a guaranteed breakdown voltage range of 10.0 V to 11.1 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures consistent clamping onset across production lots and temperature extremes, directly supporting design margin calculations for protected ICs.

Is SA9.0CAHE3/54 suitable for automotive applications?

Yes, SA9.0CAHE3/54 carries the HE3 suffix indicating AEC-Q101 qualification, including stress tests for temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing. Its DO-15 package and bidirectional architecture make SA9.0CAHE3/54 appropriate for engine control, ADAS sensor, and body electronics modules.

What does the "CA" suffix mean in SA9.0CAHE3/54?

The "CA" suffix in SA9.0CAHE3/54 denotes a bidirectional configuration - meaning the device clamps voltage transients equally in both directions with symmetrical V_BR and V_C characteristics. Unlike unidirectional variants (e.g., SA9.0A), SA9.0CAHE3/54 has no cathode marking and can be mounted without orientation constraints.

What is the clamping voltage of SA9.0CAHE3/54 at its rated peak pulse current?

The SA9.0CAHE3/54 clamps to a maximum of 15.4 V at its rated peak pulse current of 32.5 A (10/1000 μs waveform). This value is measured under standardized conditions and defines the upper voltage limit imposed on protected circuitry during surge events, enabling accurate IC stress analysis.

How does SA9.0CAHE3/54 differ from SA9.0AHE3/54?

SA9.0CAHE3/54 is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas SA9.0AHE3/54 is unidirectional with a cathode band and forward conduction capability. The SA9.0AHE3/54 variant also specifies a maximum forward voltage (V_F) of 3.5 V at 100 A, which does not apply to SA9.0CAHE3/54.

SA9.0CAHE3/54 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:: Active

Type:: Zener

Unidirectional Channels:: -

Bidirectional Channels:: 1

Voltage - Reverse Standoff (Typ):: 9V

Voltage - Breakdown (Min):: 10V

Voltage - Clamping (Max) @ Ipp:: 15.4V

Current - Peak Pulse (10/1000µs):: 32.5A

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)

SA9.0CAHE3/54 FAQ

1.How can I place an order for SA9.0CAHE3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA9.0CAHE3/54 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 SA9.0CAHE3/54 reliable?

The price and inventory of SA9.0CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA9.0CAHE3/54 is usually 5 days.

3.What payment methods are accepted for SA9.0CAHE3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0CAHE3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA9.0CAHE3/54?

SA9.0CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA9.0CAHE3/54 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 SA9.0CAHE3/54?

For technical support, including SA9.0CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0CAHE3/54 requirements.

6.How does Aetrix verify that SA9.0CAHE3/54 is sourced from the original manufacturer or authorized distributors?

All SA9.0CAHE3/54 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 SA9.0CAHE3/54 meets industry standards.

7.What is the process for return or replacement of SA9.0CAHE3/54?

All SA9.0CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0CAHE3/54, 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 SA9.0CAHE3/54 part is unused and in its original packaging.

Return procedure for SA9.0CAHE3/54:

1.Submit a request within 90 days.

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

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