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Vishay General Semiconductor - Diodes Division SMB10J8.5AHE3_A/H
- Part No.:
- SMB10J8.5AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J8.5AHE3_A/H.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB10J8.5AHE3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 8.5 V stand-off voltage (VWM), 9.44–10.4 V breakdown voltage (VBR) at 1 mA, 14.4 V clamping voltage (VC) at 20 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB10J8.5AHE3_A/H datasheet, SMB10J8.5AHE3_A/H pinout, SMB10J8.5AHE3_A/H application, or SMB10J8.5AHE3_A/H equivalent, key selection criteria include clamping performance under 20 A surge, AEC-Q101 qualification for automotive use, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches to divert surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables rapid energy dissipation without thermal runaway.
Designed for compliance with ANSI/IEEE C62.35 standards, SMB10J8.5AHE3_A/H supports single-pulse surge events up to 100 A IFSM (8.3 ms half-sine) and maintains operation across -55 °C to +150 °C junction temperature range - validated per AEC-Q101 stress tests including temperature cycling, HTRB, and ESD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail (e.g., 9–12 V automotive supply) |
| VBR (min/max) | 9.44 V / 10.4 V at 1 mA - tight breakdown tolerance ensures predictable turn-on during transients |
| VC @ IPPM | 14.4 V at 20 A - clamping voltage limits stress on protected MOSFET or MCU I/O during 10/1000 µs surge |
| PPPM | 1000 W - peak power handling capability for high-energy transients like load dump or ISO 7637-2 Pulse 5a |
| ID @ VWM | <1.0 µA - ultra-low leakage preserves battery life in always-on automotive modules |
| TJ max | +150 °C - enables under-hood deployment without derating in engine control units |
| AEC-Q101 | Qualified - certified for automotive electronics per stress test requirements (HTGB, TC, AC, etc.) |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-to-cathode conduction path during avalanche | Connected to protected line; cathode ties to higher-potential rail (e.g., VBUS) to clamp positive transients |
| Anode | Reference/ground return path | Connected to system ground or low-side reference; completes shunt path for surge current diversion |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments |
| AEC-Q101 qualification | Validates reliability for automotive applications including powertrain, body control, and ADAS sensor modules |
| Low RINC (incremental surge resistance) | Minimizes voltage overshoot during fast-rising transients (e.g., ESD or inductive kick), improving protection margin |
| MSL Level 1 rating | Enables standard SMT reflow without baking; compatible with high-volume automated assembly lines |
| RoHS-compliant & halogen-free option | Meets automotive OEM material compliance requirements (e.g., VW 80101, GMW3172) |
Applications
| Automotive Sensor Interface | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting CAN/LIN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and ground to clamp voltage spikes before they reach sensitive input ESD structures. Use Value: Prevents latch-up or gate oxide damage in transceivers by limiting voltage to ≤14.4 V during 20 A surges per ISO 7637-2. | Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminal block, upstream of optocoupler or Schmitt trigger input stage. Use Value: Enables robust operation in factory-floor environments where 1000 W surge immunity meets IEC 61000-4-5 Level 3 (2 kV) requirements. |
| Automotive Body Control Module | Consumer Appliance Motor Driver |
Use Scenario: Protecting microcontroller GPIOs and LED driver outputs in door module ECUs exposed to battery reverse connection and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS on each output line to absorb reverse-polarity energy and suppress switching noise. Use Value: Maintains functional safety integrity (ASIL-B relevant) by preventing false triggering or permanent damage during 100 A IFSM surge events. | Use Scenario: Clamping inductive kickback from brushed DC motor drivers in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to limit back-EMF voltage during PWM commutation. Use Value: Extends MOSFET lifespan by capping drain-source voltage to 14.4 V, reducing avalanche stress and thermal cycling fatigue. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.5A-E3/52 | Same SMB package, identical VWM/VBR/VC specs, but commercial-grade (non-AEC-Q101) | Lacks automotive qualification; suitable for industrial or consumer designs without automotive lifecycle requirements | Select when AEC-Q101 is not mandated and cost optimization is prioritized |
| 1.5SMC8.5A | Higher package thermal resistance (RθJA = 110 °C/W vs. 72 °C/W); same electrical specs but lower power density | Requires larger PCB area and more copper for equivalent thermal performance; less suitable for space-constrained automotive modules | Choose only if SMB footprint is unavailable and SMC (DO-214AB) layout is already fixed |
Compared with SMB10J8.5AHE3_A/H, SMBJ8.5A-E3/52 offers identical protection performance at lower cost but no automotive qualification, while 1.5SMC8.5A delivers matching clamping but demands greater board area and thermal management effort due to inferior power density.
Availability
SMB10J8.5AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input conditioning, and consumer appliance motor drive circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB10J8.5AHE3_A/H 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, power density, and automotive-grade qualification.
The SMB10J series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for demanding automotive and industrial surge environments where compact size, AEC-Q101 compliance, and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SMB10J8.5AHE3_A/H at its rated peak pulse current?
The SMB10J8.5AHE3_A/H has a maximum clamping voltage (VC) of 14.4 V at 20 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings. The SMB10J8.5AHE3_A/H achieves this clamping performance while maintaining low incremental resistance for minimal overshoot.
Is SMB10J8.5AHE3_A/H qualified for automotive applications?
Yes, SMB10J8.5AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST), validating its suitability for automotive powertrain, body electronics, and ADAS subsystems. The SMB10J8.5AHE3_A/H meets the reliability and longevity requirements specified in AEC-Q101 Rev D.
What does the "HE3" suffix in SMB10J8.5AHE3_A/H indicate?
The "HE3" suffix in SMB10J8.5AHE3_A/H denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability standards. The "H" refers to the tape-and-reel packaging variant (750 units per 7" reel), while "E3" specifies the environmental compliance grade. This suffix distinguishes SMB10J8.5AHE3_A/H from commercial-grade variants like SMBJ8.5A-E3/52 and confirms its automotive-grade status and process control.
How does SMB10J8.5AHE3_A/H compare to bidirectional TVS diodes with the same VWM?
SMB10J8.5AHE3_A/H is unidirectional and optimized for DC-biased lines where only positive-going transients require suppression - such as 12 V supply rails or microcontroller I/O referenced to ground. Unlike bidirectional types (e.g., SMB8J8.5CA), it provides lower leakage (<1.0 µA) and higher PPPM (1000 W vs. 800 W), making it more efficient for asymmetric surge profiles. The SMB10J8.5AHE3_A/H also features a visible cathode band for polarity identification, simplifying assembly verification.
What PCB pad layout is recommended for optimal thermal and surge performance of SMB10J8.5AHE3_A/H?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMB10J8.5AHE3_A/H to achieve rated PPPM and thermal dissipation. This layout reduces thermal resistance (RθJA = 72 °C/W) and prevents localized heating during repetitive surges. The SMB10J8.5AHE3_A/H datasheet further recommends using internal ground planes and thermal vias beneath pads to enhance heat spreading - especially critical in automotive modules operating near TJ max of +150 °C.
SMB10J8.5AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 69.4A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J8.5AHE3_A/H FAQ
1.How can I place an order for SMB10J8.5AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J8.5AHE3_A/H 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 SMB10J8.5AHE3_A/H reliable?
The price and inventory of SMB10J8.5AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J8.5AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J8.5AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J8.5AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J8.5AHE3_A/H?
SMB10J8.5AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J8.5AHE3_A/H 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 SMB10J8.5AHE3_A/H?
For technical support, including SMB10J8.5AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J8.5AHE3_A/H requirements.
6.How does Aetrix verify that SMB10J8.5AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J8.5AHE3_A/H 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 SMB10J8.5AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J8.5AHE3_A/H?
All SMB10J8.5AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J8.5AHE3_A/H, 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 SMB10J8.5AHE3_A/H part is unused and in its original packaging.
Return procedure for SMB10J8.5AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J8.5AHE3_A/H Tags
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