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Vishay General Semiconductor - Diodes Division SA8.5C-E3/54
- Part No.:
- SA8.5C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA8.5C-E3/54.pdf
- Description:
- TVS DIODE 8.5VWM 15.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,104
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Product details
Overview
SA8.5C-E3/54 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), 8.5 V stand-off voltage (VWM), 14.4 V maximum clamping voltage (VC) at 10 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA8.5C-E3/54 datasheet, SA8.5C-E3/54 pinout, SA8.5C-E3/54 application, or SA8.5C-E3/54 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, and validated alternatives for ESD and lightning transient protection in automotive sensor interfaces and industrial I/O circuits.
Technical Context
The SA8.5C-E3/54 operates as a bi-directional avalanche diode with symmetrical breakdown characteristics in both polarities, enabling protection of AC-coupled or floating signal paths. Its VBR range is 9.44–10.4 V at 1.0 mA test current, and it exhibits low incremental clamping resistance to limit voltage overshoot during fast transients.
Designed for repetitive surge immunity, it supports 500 W peak pulse power per 10/1000 μs waveform at ≤0.01% duty cycle and maintains stable operation across –55 °C to +175 °C junction temperature. The device uses glass-passivated junction technology and matte tin-plated leads compliant with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 9.44 V / 10.4 V at 1.0 mA - Ensures reliable turn-on within defined tolerance band for predictable clamping onset |
| VC @ IPPM | 14.4 V at 10 A - Limits transient voltage seen by downstream circuitry during 10/1000 μs surge |
| PPPM | 500 W - Sustains high-energy transients such as ISO 7637-2 Pulse 1/2a/5a without failure |
| ID @ VWM | 10 μA - Low leakage preserves signal integrity and battery life in always-on systems |
| TJ max | +175 °C - Enables placement near heat sources in engine control units and power electronics |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronic components including temperature cycling and HTRB |
Pinout & Package
Package: DO-204AC (DO-15), molded epoxy case meeting UL 94 V-0 flammability rating; no polarity marking required for bi-directional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity - enables single-device protection of differential or AC signals |
| Lead 1 / Lead 2 | External connection points | Matte tin-plated, solderable per JESD 22-B102; supports wave and reflow soldering up to 275 °C for 10 s |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable avalanche characteristics and long-term reliability under repeated surge stress |
| 500 W peak pulse power (10/1000 μs) | Withstands automotive load-dump and inductive switching surges without degradation |
| AEC-Q101 qualification | Validated for use in automotive powertrain, body electronics, and ADAS sensor modules |
| Low clamping voltage (14.4 V @ 10 A) | Protects 12 V system ICs with margin below typical 16 V absolute maximum ratings |
| DO-204AC (DO-15) package | Industry-standard footprint compatible with legacy PCB layouts and automated assembly |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional clamping element placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal fidelity during ISO 10605 ESD events and suppresses >100 V transients to <15 V, preventing latch-up or damage to 3.3 V/5 V microcontrollers. | Use Scenario: Safeguarding PLC analog input channels and digital fieldbus nodes against induced surges from motor drives and relay switching. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V supply rails and signal lines interfacing with external sensors or actuators. Use Value: Limits transient voltage to 14.4 V at 10 A, ensuring compatibility with industrial-grade op-amps and ADCs rated for ≤16 V input. |
| Consumer Power Adapter Input | Telecom Line Interface |
Use Scenario: Secondary-side transient suppression on DC output rails of wall adapters and USB PD chargers exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS placed after DC-DC converter output filter to absorb residual ringing and ESD coupled through cables. Use Value: Clamps 8.5 V nominal rail to ≤14.4 V within nanoseconds, preventing overvoltage reset or brownout in connected devices. | Use Scenario: Surge protection on telephone line interface circuits (e.g., DSL, POTS) subject to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Bi-directional clamp across tip/ring pair to divert longitudinal surges while preserving AC signal integrity. Use Value: Symmetrical 9.44–10.4 V breakdown ensures balanced clamping regardless of surge polarity, critical for full-duplex voice/data transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.5CA | Same VWM (8.5 V), identical DO-214AC (SMA) package, 400 W PPPM vs. 500 W | Lower surge rating limits suitability for automotive load-dump; better suited for consumer-grade board-level protection | Select SMAJ8.5CA when space-constrained layouts require surface-mount packaging and 400 W capability suffices |
| 1.5KE8.5CA | Same VWM and bi-directionality, but larger DO-201AE (T-48) package and 1500 W PPPM | Higher surge capacity supports harsher environments like railway signaling, but requires larger PCB area and higher mounting torque | Choose 1.5KE8.5CA where system-level surge tests exceed ISO 7637-2 Level IV and board space permits axial-leaded devices |
Compared with SMAJ8.5CA and 1.5KE8.5CA, the SA8.5C-E3/54 delivers optimal balance of 500 W surge handling, AEC-Q101 qualification, and compact DO-15 through-hole footprint-making it preferred for cost-sensitive, high-reliability automotive and industrial control designs requiring proven thermal robustness and lead-free compliance.
Availability
SA8.5C-E3/54 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial programmable logic controllers, and telecom line interface cards requiring stable component supply and long-term lifecycle support.
Supply support for SA8.5C-E3/54 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 protection devices with emphasis on reliability and automotive qualification.
The SAxxC series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in automotive, industrial, and communications systems where precise clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage range of the SA8.5C-E3/54?
The SA8.5C-E3/54 has a minimum breakdown voltage (VBR) of 9.44 V and a maximum of 10.4 V, measured at 1.0 mA test current. This tight VBR window ensures consistent clamping onset across production lots and guarantees that the SA8.5C-E3/54 activates reliably just above its 8.5 V stand-off rating without premature conduction during normal operation.
Is the SA8.5C-E3/54 suitable for automotive applications?
Yes, the SA8.5C-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction-including glass-passivated junction, matte tin-plated leads, and operation up to +175 °C junction temperature-meets stress-test requirements for engine bay and chassis-mounted electronics. The SA8.5C-E3/54 is commonly deployed in body control modules and sensor front-ends where ISO 7637-2 transient immunity is required.
What does the "C" suffix indicate in SA8.5C-E3/54?
The "C" in SA8.5C-E3/54 denotes bi-directional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike uni-directional variants (e.g., SA8.5A), the SA8.5C-E3/54 has no polarity marking and functions identically regardless of terminal orientation-ideal for protecting AC-coupled lines or floating differential pairs where surge polarity is unpredictable.
How does the clamping voltage of SA8.5C-E3/54 compare to its stand-off voltage?
The SA8.5C-E3/54 has a stand-off voltage (VWM) of 8.5 V and a maximum clamping voltage (VC) of 14.4 V at 10 A peak pulse current. This 5.9 V differential represents the worst-case voltage overshoot the protected circuit will experience during a full-rated surge event. That margin ensures compatibility with 12 V automotive systems and 5 V/3.3 V logic interfaces, as VC remains safely below typical IC absolute maximum ratings.
What packaging and compliance certifications apply to SA8.5C-E3/54?
The SA8.5C-E3/54 is supplied in DO-204AC (DO-15) package with RoHS-compliant matte tin-plated leads, meeting JESD 22-B102 solderability and JESD 201 Class 1A whisker resistance requirements. The "E3" suffix confirms commercial-grade RoHS compliance, while "HE3" variants (not this part) denote AEC-Q101 qualification-both share identical electrical specs and mechanical form factor.
SA8.5C-E3/54 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 15.9V
- Current - Peak Pulse (10/1000µs):
- 31.4A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA8.5C-E3/54 FAQ
1.How can I place an order for SA8.5C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA8.5C-E3/54 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 SA8.5C-E3/54 reliable?
The price and inventory of SA8.5C-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA8.5C-E3/54 is usually 5 days.
3.What payment methods are accepted for SA8.5C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA8.5C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA8.5C-E3/54?
SA8.5C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA8.5C-E3/54 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 SA8.5C-E3/54?
For technical support, including SA8.5C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA8.5C-E3/54 requirements.
6.How does Aetrix verify that SA8.5C-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA8.5C-E3/54 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 SA8.5C-E3/54 meets industry standards.
7.What is the process for return or replacement of SA8.5C-E3/54?
All SA8.5C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA8.5C-E3/54, 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 SA8.5C-E3/54 part is unused and in its original packaging.
Return procedure for SA8.5C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA8.5C-E3/54 Tags
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