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Vishay General Semiconductor - Diodes Division SA8.0CHE3/73
- Part No.:
- SA8.0CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA8.0CHE3/73.pdf
- Description:
- TVS DIODE 8VWM 15VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,757
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Product details
Overview
SA8.0CHE3/73 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), 8.0 V stand-off voltage (VWM), 13.6 V maximum clamping voltage at 25 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA8.0CHE3/73 datasheet, SA8.0CHE3/73 pinout, SA8.0CHE3/73 application, or SA8.0CHE3/73 equivalent, this device is selected for robust overvoltage protection in automotive sensor interfaces, industrial I/O lines, and telecom line cards where bidirectional surge immunity and RoHS-compliant, whisker-tested leads are required.
Technical Context
The SA8.0CHE3/73 operates as a bi-directional avalanche diode with symmetrical breakdown behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its 6.4–7.07 V breakdown voltage (VBR) at 10 mA IT ensures reliable triggering before downstream IC damage, while low incremental surge resistance supports consistent clamping under repetitive transients.
Designed for high-reliability environments, it delivers 175 °C maximum junction temperature operation and meets JESD 201 Class 2 whisker testing via HE3 suffix - confirming suitability for automotive under-hood applications. The glass-passivated chip junction and UL 94 V-0 molded epoxy package provide stable performance across thermal cycling and humidity exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working range for protected circuitry. |
| VBR min/max | 6.4 V / 7.07 V at 10 mA - Confirmed avalanche onset range; ensures predictable turn-on within 10% tolerance for design margining. |
| VC @ IPPM | 13.6 V at 25 A - Clamped voltage during 10/1000 μs surge; limits stress on downstream components to safe levels. |
| PPPM | 500 W - Peak pulse power handling per single transient; supports IEC 61000-4-5 Level 4 surge immunity (4 kV). |
| ID @ VWM | 25 μA max - Low leakage current at rated stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max | 175 °C - Maximum junction temperature rating; enables deployment in engine control units and powertrain modules. |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including HTOL, TC, and HAST testing per stress test plan. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case with matte tin-plated leads. Bi-directional construction means no polarity marking; terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetric) | Transient conduction path | Either lead serves as input/output for bidirectional clamping; no cathode band marking required. |
| Leads (both) | PCB interconnect and thermal path | Matte tin plating ensures solderability per J-STD-002; 0.375" lead length supports standard DO-15 mounting and heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR and low leakage over 1000+ thermal cycles; eliminates passivation-related drift in harsh environments. |
| 500 W peak pulse power (10/1000 μs) | Withstands repeated lightning-induced surges up to 4 kV (IEC 61000-4-5) without degradation when properly heatsinked. |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive applications including powertrain, body electronics, and ADAS sensor interfaces per full stress test suite. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under high humidity and temperature bias - critical for long-life automotive deployments. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets flammability requirements for under-hood and enclosed industrial enclosures. |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role: Bidirectional clamping element placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤13.6 V during 25 A surges, preventing latch-up or gate oxide damage in 5 V/3.3 V interface ICs. |
Use Scenario: Shielding PLC digital input modules from inductive kickback caused by relay or solenoid switching in factory automation systems. IC Role / Device Role: Primary overvoltage clamp on 24 V DC input channels, mounted directly at terminal block entry point. Use Value: Absorbs 500 W pulses without failure, maintaining <25 μA leakage at 8 V to avoid false logic state detection. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHY front-end circuits and DSL line drivers against induced surges from nearby power lines or lightning coupling. IC Role / Device Role: Secondary protection stage after gas discharge tube (GDT), providing fast-response clamping for sub-microsecond transients. Use Value: 10/1000 μs response ensures clamping occurs before 100 ns - faster than most GDTs - preserving signal integrity on 100 Mbps+ links. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role: Across-motor terminals or across H-bridge MOSFETs to clamp inductive energy during PWM commutation. Use Value: Withstands 70 A non-repetitive forward surge (IFSM), enabling direct placement on motor drive outputs without series fusing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ8.0A | Uni-directional; 8.0 V VWM, 13.6 V VC @ 25 A, same DO-214AC package but different footprint and polarity marking. | Requires careful orientation during PCB layout; unsuitable for AC or floating signal lines without external biasing. | Select only if unidirectional protection suffices and board space allows SMA package rework. |
| ON Semiconductor 1.5KE8.2CA | Higher PPPM (1500 W), larger DO-201AD package, 8.2 V VWM, 13.4 V VC @ 74 A - significantly higher surge capacity but less compact. | Better suited for primary-level AC mains protection; over-specified for signal-line use and incompatible with DO-15 footprints. | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board layout accommodates larger body size. |
Compared with Littelfuse SMAJ8.0A and ON Semi 1.5KE8.2CA, the SA8.0CHE3/73 uniquely combines AEC-Q101 qualification, DO-15 form factor, bi-directional symmetry, and JESD 201 Class 2 whisker resistance - making it the preferred choice for space-constrained, automotive-grade signal protection where polarity-agnostic clamping is mandatory.
Availability
SA8.0CHE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SA8.0CHE3/73 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxxC series was developed specifically for high-reliability transient suppression in automotive and industrial environments, prioritizing AEC-Q101 qualification, low clamping ratio, and robust packaging for extended thermal and mechanical endurance.
FAQ
What is the polarity configuration of SA8.0CHE3/73?
The SA8.0CHE3/73 is a bi-directional TVS diode with symmetrical electrical characteristics in both directions. It has no cathode marking or polarity designation - either lead may be connected to the line or ground side of the protected circuit. This eliminates orientation errors during assembly and simplifies layout for AC-coupled or floating signals.
Does SA8.0CHE3/73 meet automotive qualification standards?
Yes, SA8.0CHE3/73 is AEC-Q101 qualified and carries the HE3 suffix, indicating compliance with the full automotive stress test suite including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. It is approved for use in engine control, body electronics, and ADAS subsystems.
What is the clamping voltage of SA8.0CHE3/73 under surge conditions?
The SA8.0CHE3/73 clamps to a maximum of 13.6 V when subjected to a 25 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed per datasheet Table 1 and represents the upper limit of voltage seen by downstream components during standardized surge events.
Can SA8.0CHE3/73 replace uni-directional TVS diodes like SA8.0A?
No - SA8.0CHE3/73 is bi-directional and cannot substitute for uni-directional parts such as SA8.0A in DC-biased applications where forward conduction must be blocked. Using it in place of SA8.0A would allow unintended current flow during normal operation, potentially disrupting circuit functionality.
What does the "HE3" suffix indicate in SA8.0CHE3/73?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It confirms that SA8.0CHE3/73 uses matte tin-plated leads tested for whisker growth under high humidity and temperature bias - a requirement for automotive under-hood deployment.
SA8.0CHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 33.3A
- 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)
SA8.0CHE3/73 FAQ
1.How can I place an order for SA8.0CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA8.0CHE3/73 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 SA8.0CHE3/73 reliable?
The price and inventory of SA8.0CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA8.0CHE3/73 is usually 5 days.
3.What payment methods are accepted for SA8.0CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA8.0CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA8.0CHE3/73?
SA8.0CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA8.0CHE3/73 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 SA8.0CHE3/73?
For technical support, including SA8.0CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA8.0CHE3/73 requirements.
6.How does Aetrix verify that SA8.0CHE3/73 is sourced from the original manufacturer or authorized distributors?
All SA8.0CHE3/73 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 SA8.0CHE3/73 meets industry standards.
7.What is the process for return or replacement of SA8.0CHE3/73?
All SA8.0CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA8.0CHE3/73, 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 SA8.0CHE3/73 part is unused and in its original packaging.
Return procedure for SA8.0CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA8.0CHE3/73 Tags
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