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Vishay General Semiconductor - Diodes Division SA8.0AHE3/54
- Part No.:
- SA8.0AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA8.0AHE3/54.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,889
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Product details
Overview
SA8.0AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and inductive switching transients. It features 8.0 V stand-off voltage, 8.89–9.83 V breakdown voltage at 10 mA, 500 W peak pulse power (10/1000 μs), 36.8 A peak pulse current, and clamps to ≤13.6 V at rated IPPM. It is AEC-Q101 qualified and used in automotive sensor signal lines.
For engineers reviewing the SA8.0AHE3/54 datasheet, SA8.0AHE3/54 pinout, SA8.0AHE3/54 application, or SA8.0AHE3/54 equivalent, key selection criteria include VWM tolerance, clamping ratio (VC/VBR), TJ max. of 175 °C, RoHS-compliant HE3 suffix (JESD 201 Class 2 whisker test), and DO-15 mechanical compatibility with legacy board layouts.
Technical Context
This TVS diode operates as a voltage-clamping overvoltage protection device placed in parallel with sensitive IC inputs or power rails. Its glass-passivated junction enables fast response (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 μs transients at 0.01% duty cycle.
Designed for unidirectional operation, SA8.0AHE3/54 exhibits polarity marking (cathode band), 3.5 V max forward voltage at 100 A, and thermal derating per Fig. 2 - maintaining 500 W capability only at TA ≤ 25 °C, dropping to ~250 W at 85 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR min/max | 8.89 V / 9.83 V at IT = 10 mA - ensures predictable turn-on across production lot; tight 10.5% spread supports robust design margin. |
| VC @ IPPM | ≤13.6 V at 36.8 A - clamping voltage directly limits stress on downstream MOSFET gate or MCU I/O during surge. |
| PPPM | 500 W (10/1000 μs) - sustains one-time or low-duty-cycle surges typical of automotive load dump or relay coil flyback. |
| TJ max. | +175 °C - enables placement near hot components (e.g., power converters) without thermal shutdown risk. |
| IFSM | 70 A (10 ms half-sine) - withstands high-energy inrush or fault currents without bond wire fusing. |
| Leakage ID | ≤25 μA at VWM - negligible standby power loss in battery-powered sensor nodes. |
Pinout & Package
Package: DO-15 (DO-204AC), axial leaded, epoxy-molded, UL 94 V-0 compliant. Cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; forms clamping loop with cathode. |
| Cathode | High-side connection point | Connected to protected line (e.g., CAN_H, LIN bus, sensor VOUT); conducts surge current to ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including temperature cycling, humidity bias, and mechanical shock. |
| Glass passivated junction | Ensures stable VBR over time and immunity to moisture-induced parameter drift in industrial environments. |
| 500 W peak pulse rating | Handles ISO 7637-2 Pulse 1 (inductive switch-off) and IEC 61000-4-5 Level 3 surges without degradation. |
| HE3 suffix | Meets JESD 201 Class 2 whisker resistance - critical for long-life automotive modules with no field-rework access. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during transient events, protecting 3.3 V or 5 V logic interfaces without additional series impedance. |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control units exposed to load-dump transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor VOUT and chassis ground. Use Value: Limits transient voltage to ≤13.6 V, preventing damage to 12-bit ADC input stages while maintaining <25 μA leakage at 8.0 V nominal rail. | Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers subject to relay contact bounce and inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS on each optocoupler input leg to clamp spikes before isolation barrier. Use Value: Withstands 70 A non-repetitive surge (IFSM), enabling reliable operation in factory automation where contactors switch 10+ times per minute. |
| Consumer Power Adapter Output | Telecom Line Interface |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS on +5 V/9 V/15 V output rail to absorb transformer leakage energy during regulation faults. Use Value: 8.0 V VWM aligns with common adapter output tolerances; 500 W PPPM handles worst-case open-loop surge without thermal runaway. | Use Scenario: Protection of RS-485 transceiver pins in base station backhaul equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SA8.0AHE3/54 used in unidirectional supply rail clamping (e.g., VCC to GND). Use Value: Clamps to 13.6 V within nanoseconds, preserving transceiver latch-up immunity while supporting 175 °C junction operation in sealed outdoor enclosures. |
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-E3/52 | Same VWM/VBR/PPPM specs but in SMA (DO-214AC) package; 1.5 W lower PD (2.5 W vs. 3.0 W); no AEC-Q101 qualification. | Surface-mount only; unsuitable for through-hole legacy designs or high-temperature chassis mounting. | Select when board space is constrained and automotive qualification is not required. |
| P6SMB8.0A | Identical electrical specs and DO-214AA package; rated for 600 W PPPM (10/1000 μs); AEC-Q101 not claimed in datasheet. | Higher surge margin but lacks HE3 whisker testing; may require requalification for automotive Tier 1 programs. | Choose for cost-sensitive industrial use where 600 W headroom justifies footprint change and qualification recertification. |
Compared with SMAJ8.0A-E3/52 and P6SMB8.0A, SA8.0AHE3/54 uniquely combines AEC-Q101 qualification, DO-15 through-hole compatibility, and JESD 201 Class 2 whisker resistance - making it the only option qualified for long-lifecycle automotive modules requiring zero-field-rework reliability.
Availability
SA8.0AHE3/54 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC input stages, and consumer power adapter secondary-side protection requiring stable component supply across multi-year production cycles.
Supply support for SA8.0AHE3/54 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-grade validation.
The SAx.xA family delivers standardized TVS performance in DO-15 packaging for cost-effective, high-volume transient protection - engineered specifically for ESD, inductive switching, and lighting surge immunity in harsh-environment electronics.
FAQ
What is the maximum clamping voltage of SA8.0AHE3/54 under rated surge conditions?
The SA8.0AHE3/54 clamps to a maximum of 13.6 V when subjected to its rated peak pulse current of 36.8 A (10/1000 μs waveform). This value is measured per Figure 7 in the Vishay datasheet 88378 and represents the upper limit of voltage seen by protected circuitry during transient events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream of the SA8.0AHE3/54.
Is SA8.0AHE3/54 suitable for bidirectional signal line protection?
No, SA8.0AHE3/54 is a unidirectional TVS diode, indicated by the "A" suffix (vs. "CA" for bidirectional). It must be installed with correct polarity - cathode toward the protected line - and cannot suppress negative-going transients on AC-coupled or differential buses like RS-485 without external circuitry. For bidirectional protection, consider SA8.0CA variants instead of SA8.0AHE3/54.
Does SA8.0AHE3/54 meet automotive reliability standards?
Yes, SA8.0AHE3/54 carries the HE3 suffix, confirming full AEC-Q101 qualification per Vishay documentation (Rev. 27-Sep-2021, Doc. #88378). It has passed stress tests including temperature cycling, high-temperature operating life, and mechanical shock - making SA8.0AHE3/54 appropriate for engine control, body electronics, and ADAS sensor modules where field failure is unacceptable.
What is the meaning of the "HE3/54" suffix in SA8.0AHE3/54?
The "HE3" denotes RoHS-compliant construction with JESD 201 Class 2 whisker resistance (matte tin plating), and "/54" specifies the preferred packaging: 4000-piece 13-inch paper tape and reel. This distinguishes SA8.0AHE3/54 from commercial-grade E3 variants and confirms compliance with automotive supply chain requirements - a key identifier when sourcing SA8.0AHE3/54 for Tier 1 programs.
How does the thermal derating of SA8.0AHE3/54 affect its surge capability in real-world PCB layouts?
SA8.0AHE3/54 maintains full 500 W peak pulse power only at TA = 25 °C; its capability drops linearly per Figure 2, reaching ~250 W at 85 °C ambient. In compact PCB layouts with limited copper area, actual junction temperature rise during repeated surges may exceed ambient - so designers must verify thermal path (lead length, pad size, copper pour) to avoid exceeding TJ max. of 175 °C, especially in SA8.0AHE3/54 deployments near power stages.
SA8.0AHE3/54 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:
- 1
- Bidirectional Channels:
- -
- 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)
SA8.0AHE3/54 FAQ
1.How can I place an order for SA8.0AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA8.0AHE3/54 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 SA8.0AHE3/54 reliable?
The price and inventory of SA8.0AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA8.0AHE3/54 is usually 5 days.
3.What payment methods are accepted for SA8.0AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA8.0AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA8.0AHE3/54?
SA8.0AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA8.0AHE3/54 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 SA8.0AHE3/54?
For technical support, including SA8.0AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA8.0AHE3/54 requirements.
6.How does Aetrix verify that SA8.0AHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA8.0AHE3/54 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 SA8.0AHE3/54 meets industry standards.
7.What is the process for return or replacement of SA8.0AHE3/54?
All SA8.0AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA8.0AHE3/54, 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 SA8.0AHE3/54 part is unused and in its original packaging.
Return procedure for SA8.0AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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