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

Vishay General Semiconductor - Diodes Division SA8.0CAHE3/54

Name: SA8.0CAHE3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA8.0CAHE3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA8.0CAHE3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

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

Datasheet:: SA8.0CAHE3/54.pdf

Description:: TVS DIODE 8VWM 13.6VC DO204AC

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Product details

Overview

SA8.0CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 500 W peak pulse power (10/1000 μs), 8.0 V stand-off voltage (V_WM), 13.6 V maximum clamping voltage at 25 A (V_C), and AEC-Q101 qualification for automotive-grade reliability.

For engineers reviewing the SA8.0CAHE3/54 datasheet, SA8.0CAHE3/54 pinout, SA8.0CAHE3/54 application, or SA8.0CAHE3/54 equivalent, this device is selected for robust ESD and surge protection in automotive sensor interfaces, industrial I/O lines, and telecom line cards where bidirectional clamping and high surge immunity are required.

Technical Context

The SA8.0CAHE3/54 operates as a symmetrical avalanche diode with identical forward and reverse breakdown characteristics, enabling bidirectional transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable V_BR (8.89–9.83 V at 10 mA) and low incremental surge resistance, critical for fast response to lightning-induced surges or inductive switching spikes.

Designed for 10/1000 μs waveform compliance, it delivers 25 A peak pulse current (I_PPM) with clamping limited to ≤13.6 V, maintaining safe voltage margins for downstream 5 V or 3.3 V logic. The DO-15 package supports manual or automated through-hole assembly and meets UL 94 V-0 flammability rating.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	8.0 V - Maximum continuous reverse voltage before clamping begins; sets operating margin for 5 V systems.
V_BR (min/max)	8.89 V / 9.83 V at 10 mA - Confirmed breakdown range ensures reliable triggering across temperature and unit variation.
V_C @ I_PPM	13.6 V at 25 A - Clamping voltage under 500 W surge defines worst-case stress on protected ICs.
P_PPM	500 W - Peak pulse power handling per 10/1000 μs waveform enables compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω).
I_PPM	25 A - Peak pulse current capability directly supports 100 V surge into 4 Ω source impedance.
T_J max.	175 °C - Junction temperature rating allows operation in under-hood automotive environments.
AEC-Q101	Qualified - Validated for automotive applications including engine control modules and body electronics.

Pinout & Package

DO-15 (DO-204AC) molded epoxy package with matte tin-plated leads; bidirectional construction means no polarity marking - both terminals are electrically symmetric.

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (symmetrical)	Transient conduction path	Either terminal serves as input/output for bidirectional surge current; no cathode band marking required.
Leads (2)	PCB interconnect interface	Through-hole solderable per J-STD-002; 275 °C max solder dip for 10 s ensures process compatibility.

Key Features

Feature	Design Value
Glass-passivated junction	Ensures stable V_BR over lifetime and temperature, minimizing drift in clamping threshold.
500 W peak pulse power (10/1000 μs)	Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit voltage in 2 Ω source impedance configurations.
AEC-Q101 qualification	Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test requirements.
UL 94 V-0 molding compound	Prevents flame propagation during fault conditions, meeting safety standards for enclosed industrial equipment.

Applications

Automotive Sensor Protection	Industrial PLC I/O Protection
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains V_C ≤13.6 V during 25 A surges, preserving integrity of 5 V rail and 3.3 V microcontroller I/O pins.	Use Scenario: Shielding digital input modules in programmable logic controllers from inductive kickback caused by relay or solenoid switching. IC Role / Device Role / Timing Role: Primary surge suppression device on 24 V DC input lines, operating in parallel with optocoupler input stages. Use Value: Withstands repetitive 500 W pulses at 0.01 % duty cycle, enabling long-term reliability in factory automation environments.
Telecom Line Interface	Consumer Appliance Control Board
Use Scenario: Guarding RS-485 transceiver ports against lightning-induced surges on outdoor data lines in base station equipment. IC Role / Device Role / Timing Role: First-line TVS on differential pair, configured with matched layout to preserve common-mode rejection. Use Value: Symmetrical clamping ensures equal protection for both A and B lines without skew or imbalance.	Use Scenario: Safeguarding microcontroller reset and communication pins in washing machine control boards exposed to motor commutation noise. IC Role / Device Role / Timing Role: Localized TVS adjacent to MCU pins, minimizing trace inductance to achieve sub-nanosecond response. Use Value: Low clamping voltage (13.6 V) prevents latch-up in 3.3 V logic while surviving 70 A IFSM surges from nearby motor drivers.

Automotive Sensor Protection

Industrial PLC I/O Protection

Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and ESD events in vehicle ECUs.

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

Use Value: Maintains V_C ≤13.6 V during 25 A surges, preserving integrity of 5 V rail and 3.3 V microcontroller I/O pins.

Use Scenario: Shielding digital input modules in programmable logic controllers from inductive kickback caused by relay or solenoid switching.

IC Role / Device Role / Timing Role: Primary surge suppression device on 24 V DC input lines, operating in parallel with optocoupler input stages.

Use Value: Withstands repetitive 500 W pulses at 0.01 % duty cycle, enabling long-term reliability in factory automation environments.

Telecom Line Interface

Consumer Appliance Control Board

Use Scenario: Guarding RS-485 transceiver ports against lightning-induced surges on outdoor data lines in base station equipment.

IC Role / Device Role / Timing Role: First-line TVS on differential pair, configured with matched layout to preserve common-mode rejection.

Use Value: Symmetrical clamping ensures equal protection for both A and B lines without skew or imbalance.

Use Scenario: Safeguarding microcontroller reset and communication pins in washing machine control boards exposed to motor commutation noise.

IC Role / Device Role / Timing Role: Localized TVS adjacent to MCU pins, minimizing trace inductance to achieve sub-nanosecond response.

Use Value: Low clamping voltage (13.6 V) prevents latch-up in 3.3 V logic while surviving 70 A IFSM surges from nearby 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
SMAJ8.0A	Surface-mount SMA package (vs. through-hole DO-15); same V_WM, V_C, and P_PPM.	Requires PCB redesign for SMT assembly; lower thermal mass limits sustained surge duty cycle.	Select when board space is constrained and reflow compatibility is prioritized over manual repairability.
1.5KE8.2CA	Higher P_PPM (1500 W), larger DO-201 package; V_WM = 8.2 V, V_C = 13.4 V at 113 A.	Better suited for high-energy AC mains protection; overqualified for low-voltage signal line use.	Select only when system-level surge testing exceeds IEC 61000-4-5 Level 4 and DO-15 mechanical fit is acceptable.

Compared with SMAJ8.0A and 1.5KE8.2CA, the SA8.0CAHE3/54 offers optimal balance of AEC-Q101 qualification, through-hole serviceability, and precise 8.0 V stand-off for 5 V system interfaces - making it preferred for automotive and industrial control designs requiring field-replaceable protection.

Availability

SA8.0CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply and AEC-Q101-compliant surge protection.

Supply support for SA8.0CAHE3/54 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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and TVS devices with emphasis on reliability, efficiency, and application-specific performance.

The SAxxCA series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for bidirectional transient suppression in harsh environments including automotive, industrial, and telecommunications infrastructure.

FAQ

What is the clamping voltage of SA8.0CAHE3/54 at its rated peak pulse current?

The SA8.0CAHE3/54 has a maximum clamping voltage (V_C) of 13.6 V at 25 A peak pulse current (I_PPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and ensures that protected downstream components, such as 5 V microcontrollers or RS-485 transceivers, remain within safe operating voltage limits during surge events. The SA8.0CAHE3/54 maintains this clamping performance across its full operating temperature range.

Is SA8.0CAHE3/54 suitable for automotive applications?

Yes, SA8.0CAHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body electronics applications. Its 175 °C maximum junction temperature, glass-passivated junction stability, and DO-15 mechanical robustness meet stringent automotive reliability requirements. The SA8.0CAHE3/54 is commonly deployed in engine control units, ADAS sensor interfaces, and infotainment system power rails where bidirectional transient immunity is mandatory.

How does the bidirectional design of SA8.0CAHE3/54 affect its circuit implementation?

The bidirectional design of SA8.0CAHE3/54 eliminates polarity concerns - both terminals are functionally identical, allowing placement across any two-node interface without orientation constraints. This simplifies layout for differential signals (e.g., CAN, RS-485) and AC-coupled lines, and avoids misassembly risk. Unlike unidirectional TVS diodes, the SA8.0CAHE3/54 provides symmetrical clamping in both directions, ensuring consistent protection regardless of transient polarity.

What is the standoff voltage (V_WM) of SA8.0CAHE3/54 and why is it important?

The standoff voltage (V_WM) of SA8.0CAHE3/54 is 8.0 V - the maximum continuous reverse voltage it can block without entering avalanche conduction. This parameter defines the operating margin between normal circuit voltage and clamping onset; for example, it safely protects 5 V systems with headroom for ripple and tolerance. Exceeding V_WM risks premature leakage or thermal runaway, so SA8.0CAHE3/54 is selected where nominal rail voltage is ≤80 % of V_WM.

Does SA8.0CAHE3/54 require heatsinking in typical applications?

No, SA8.0CAHE3/54 does not require external heatsinking for single-event surge suppression due to its 500 W peak pulse rating and short-duration energy dissipation (≤1 ms). Its 3.0 W steady-state power dissipation (P_D) is only relevant for continuous DC leakage scenarios - which remain negligible (<1 μA at 8.0 V) under normal operation. Thermal design focuses on lead length and PCB copper area per Vishay's DO-15 derating curves, not heatsinks.

SA8.0CAHE3/54 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):: 8V

Voltage - Breakdown (Min):: 8.89V

Voltage - Clamping (Max) @ Ipp:: 13.6V

Current - Peak Pulse (10/1000µs):: 36.8A

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)

SA8.0CAHE3/54 FAQ

1.How can I place an order for SA8.0CAHE3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA8.0CAHE3/54 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 SA8.0CAHE3/54 reliable?

The price and inventory of SA8.0CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA8.0CAHE3/54 is usually 5 days.

3.What payment methods are accepted for SA8.0CAHE3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA8.0CAHE3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA8.0CAHE3/54?

SA8.0CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA8.0CAHE3/54 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 SA8.0CAHE3/54?

For technical support, including SA8.0CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA8.0CAHE3/54 requirements.

6.How does Aetrix verify that SA8.0CAHE3/54 is sourced from the original manufacturer or authorized distributors?

All SA8.0CAHE3/54 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 SA8.0CAHE3/54 meets industry standards.

7.What is the process for return or replacement of SA8.0CAHE3/54?

All SA8.0CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA8.0CAHE3/54, 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 SA8.0CAHE3/54 part is unused and in its original packaging.

Return procedure for SA8.0CAHE3/54:

1.Submit a request within 90 days.

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

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