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Vishay General Semiconductor - Diodes Division SMB10J8.5AHM3/H
- Part No.:
- SMB10J8.5AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J8.5AHM3/H.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,937
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Product details
Overview
SMB10J8.5AHM3/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, and 1000 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB10J8.5AHM3/H datasheet, SMB10J8.5AHM3/H pinout, SMB10J8.5AHM3/H application, or SMB10J8.5AHM3/H equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector, leveraging an avalanche breakdown mechanism to limit transient voltages before they damage downstream ICs or MOSFETs. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress.
Designed for automotive-grade environments, SMB10J8.5AHM3/H meets AEC-Q101 stress tests including temperature cycling, humidity bias, and mechanical shock. Its MSL Level 1 rating and 260 °C lead-free reflow compatibility support robust manufacturing integration without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 8.5 V - Maximum continuous reverse operating voltage before leakage exceeds 1 μA; sets safe margin below system rail voltage. |
| VBR (Breakdown Voltage) | 9.44–10.4 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 14.4 V at 20 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; defines maximum stress on downstream components. |
| PPPM (Peak Pulse Power) | 1000 W - Energy-handling capacity per single 10/1000 µs transient; supports IEC 61000-4-5 Level 4 compliance when properly mounted. |
| IFSM (Surge Current) | 100 A - Non-repetitive 8.3 ms half-sine forward surge rating; validates robustness against load dump events in 12 V automotive systems. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood environments with minimal derating. |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.20 mm × 3.94 mm footprint; compatible with standard pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential node in unidirectional configuration; must be routed with low-inductance path for effective clamping. |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., CAN_H, LIN, 12 V rail); color band identifies this terminal for correct orientation during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including temperature cycling, HAST, and mechanical shock - required for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and JESD201 Class 2 whisker resistance - suitable for green manufacturing and export compliance. |
| Low profile SMB package | Height ≤ 2.2 mm - enables compact layout in space-constrained modules like battery management systems and motor controllers. |
| Very fast response time (< 1 ps) | Sub-nanosecond avalanche turn-on - limits voltage overshoot before protection engages, critical for protecting sensitive gate drivers and microcontrollers. |
| MSL Level 1, 260 °C peak | No floor life limitation or baking requirement - simplifies SMT line logistics and reduces handling cost in high-volume production. |
Applications
| Automotive Sensor Interface | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting analog/digital sensor signals (e.g., pressure, temperature, position) from load dump and ESD in 12 V vehicle networks. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and MCU input pin. Use Value: Limits transient voltage to ≤14.4 V during 20 A surges, preventing latch-up or gate oxide damage in automotive-grade MCUs. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input front-end, upstream of optocoupler or Schmitt trigger. Use Value: Absorbs up to 1000 W of transient energy without degradation, maintaining signal integrity across 10⁵+ surge cycles. |
| Automotive Body Control Module | DC Power Rail Protection |
Use Scenario: Guarding LIN bus transceivers and LED driver ICs against battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC supply line of LIN transceiver IC. Use Value: Clamps 12 V rail transients to 14.4 V within picoseconds, ensuring transceiver remains functional during ISO 7637-2 Pulse 1/2a events. |
Use Scenario: Secondary protection on 5 V or 3.3 V DC-DC output rails feeding microcontrollers and memory in embedded systems. IC Role / Device Role / Timing Role: Final-stage clamping device after bulk capacitance, limiting residual overshoot. Use Value: Provides precise 8.5 V standoff with <1 μA leakage at room temperature, minimizing standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.5AHE3/A | Same VWM (8.5 V), VBR (9.44–10.4 V), and VC (14.4 V), but uses E3 (non-halogen-free) RoHS-compliant plating instead of HM3. | Lacks halogen-free certification; acceptable for commercial but not automotive OEM programs requiring full material declarations. | Select SMBJ8.5AHE3/A only if halogen-free compliance is not mandated by customer specification or regional regulation. |
| SMAJ8.5A-HM3 | Same electrical specs but in smaller SMA (DO-214AC) package (2.3 mm × 4.3 mm vs. SMB's 2.2 mm × 3.9 mm); 600 W PPPM rating (vs. 1000 W). | Lower power handling limits use to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 Level 4 or load dump. | Choose SMAJ8.5A-HM3 only for space-constrained consumer designs where peak surge energy is ≤600 W and AEC-Q101 is not required. |
Compared with SMB10J8.5AHM3/H, SMBJ8.5AHE3/A offers identical protection performance but lacks halogen-free status, while SMAJ8.5A-HM3 trades 40 % lower surge power for 15 % smaller footprint - making SMB10J8.5AHM3/H the optimal choice for AEC-Q101-compliant, high-energy automotive and industrial protection.
Availability
SMB10J8.5AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input conditioning, and DC power rail clamping requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB10J8.5AHM3/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, TVS devices, and optoelectronics with emphasis on reliability, power density, and automotive qualification.
The SMB10J series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for AEC-Q101-compliant surge protection in harsh automotive and industrial environments where 1000 W clamping capability and low thermal resistance are critical.
FAQ
What is the clamping voltage of SMB10J8.5AHM3/H at its rated peak pulse current?
The SMB10J8.5AHM3/H has a maximum clamping voltage (VC) of 14.4 V at 20 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88422. The clamping performance ensures protected circuits remain below critical voltage thresholds during surge events.
Is SMB10J8.5AHM3/H qualified for automotive applications?
Yes, SMB10J8.5AHM3/H is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88422, Revision 09-Jan-2024). The HM3 suffix denotes halogen-free, RoHS-compliant construction with full AEC-Q101 stress test validation - including temperature cycling, HAST, and mechanical shock - making it suitable for engine control units, ADAS sensors, and body electronics.
What does the "HM3" suffix mean in SMB10J8.5AHM3/H?
The "HM3" suffix in SMB10J8.5AHM3/H indicates halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD201 Class 2 whisker resistance. It also confirms AEC-Q101 qualification and compliance with J-STD-020 MSL Level 1 (peak reflow temperature 260 °C). This distinguishes it from E3 (RoHS only) and HE3 (AEC-Q101 + RoHS) variants.
Can SMB10J8.5AHM3/H be used in bidirectional configurations?
No, SMB10J8.5AHM3/H is a unidirectional TVS diode, as confirmed by its part number structure (no "C" suffix) and datasheet electrical tables. Bidirectional variants in the same family carry "CA" suffixes (e.g., SMB8J8.5CA). Using SMB10J8.5AHM3/H in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to protect.
What is the recommended PCB pad layout for SMB10J8.5AHM3/H?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area for each terminal of SMB10J8.5AHM3/H to achieve rated 1000 W peak pulse power. The datasheet (Fig. 2, Document 88422) shows thermal derating curves based on this layout. Smaller pads reduce surge capability and increase junction temperature - compromising reliability in high-stress applications like automotive load dump protection.
SMB10J8.5AHM3/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:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J8.5AHM3/H FAQ
1.How can I place an order for SMB10J8.5AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J8.5AHM3/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 SMB10J8.5AHM3/H reliable?
The price and inventory of SMB10J8.5AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J8.5AHM3/H is usually 5 days.
3.What payment methods are accepted for SMB10J8.5AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J8.5AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J8.5AHM3/H?
SMB10J8.5AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J8.5AHM3/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 SMB10J8.5AHM3/H?
For technical support, including SMB10J8.5AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J8.5AHM3/H requirements.
6.How does Aetrix verify that SMB10J8.5AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMB10J8.5AHM3/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 SMB10J8.5AHM3/H meets industry standards.
7.What is the process for return or replacement of SMB10J8.5AHM3/H?
All SMB10J8.5AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J8.5AHM3/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 SMB10J8.5AHM3/H part is unused and in its original packaging.
Return procedure for SMB10J8.5AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J8.5AHM3/H Tags
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