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Vishay General Semiconductor - Diodes Division SMB10J8.5AHM3_A/H
- Part No.:
- SMB10J8.5AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J8.5AHM3_A/H.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,559
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Product details
Overview
SMB10J8.5AHM3_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 with 8.5 V stand-off voltage (VWM), 9.44–10.4 V breakdown voltage (VBR), and 1000 W peak pulse power (PPPM) at 10/1000 µs waveform. It clamps transients to ≤14.4 V at 69.4 A IPPM and is AEC-Q101 qualified for automotive electronics.
For engineers reviewing the SMB10J8.5AHM3_A/H datasheet, SMB10J8.5AHM3_A/H pinout, SMB10J8.5AHM3_A/H application, or SMB10J8.5AHM3_A/H equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, MSL Level 1 moisture sensitivity, halogen-free RoHS compliance, and suitability for 12 V rail protection in engine control units, ADAS sensor interfaces, and infotainment power supplies.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced surges, with low incremental surge resistance enabling stable clamping under repetitive 10/1000 µs transients. Its thermal resistance (RθJL = 20 °C/W) supports reliable operation on standard 0.2" × 0.2" copper pads.
Rated for -55 °C to +150 °C operating range and qualified per AEC-Q101, SMB10J8.5AHM3_A/H meets automotive-grade reliability requirements including JESD201 Class 2 whisker resistance and JEDEC J-STD-020 MSL Level 1 reflow compatibility up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - Maximum continuous reverse working voltage before clamping begins; matches nominal 12 V system rails with margin. |
| VBR min/max | 9.44 V / 10.4 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | ≤14.4 V at 69.4 A - Clamping voltage limits downstream IC stress during 1000 W surge, protecting 3.3 V/5 V logic interfaces. |
| PPPM | 1000 W (10/1000 µs) - Sustains high-energy transients common in automotive load-dump and inductive switching scenarios. |
| TJ max | +150 °C - Enables deployment in under-hood environments without derating in most PCB layouts. |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated assembly; 0.220" × 0.130" body size fits tight-layout designs. |
| AEC-Q101 | Qualified - Validated for automotive applications including powertrain, chassis, and ADAS subsystems per stress test requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity indicated by cathode band. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; defines current flow direction during clamping. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V supply or signal trace); absorbs positive transients toward ground. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments. |
| Low-profile SMB package | Enables high-density PCB layouts while maintaining thermal performance via 20 °C/W junction-to-lead resistance. |
| AEC-Q101 qualification | Validates reliability for automotive use including temperature cycling, HTRB, and mechanical shock testing. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations without compromising surge robustness or thermal stability. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak, simplifying manufacturing logistics. |
Applications
| Automotive Power Rail Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontroller inputs against load-dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive surges above 8.5 V. Use Value: Limits clamped voltage to ≤14.4 V, preventing damage to 16-bit MCU I/O pins rated for 18 V absolute maximum. |
Use Scenario: Safeguarding analog sensor inputs (e.g., MAP, TPS) in ECUs exposed to ignition coil switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting transients on signal lines referenced to chassis ground. Use Value: Fast <1 ns response captures nanosecond-scale spikes before they propagate into precision ADC front-ends. |
| ADAS Camera Module Power Line | Infotainment System USB Power Port |
Use Scenario: Securing 5 V/3.3 V power delivery to forward-facing camera modules subject to ESD and conducted RF. IC Role / Device Role / Timing Role: Primary overvoltage clamp on PMIC input, coordinated with ceramic bypass capacitors. Use Value: 1000 W PPPM handles combined ESD + burst energy without degradation across >100,000 surge cycles. |
Use Scenario: Protecting USB VBUS line in head-unit designs against hot-plug transients and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on 5 V rail upstream of USB controller and port switch. Use Value: 8.5 V VWM avoids false triggering during normal 5 V ±5% regulation while clamping >12 V faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.5AHE3_A/H | Same electrical specs (VWM = 8.5 V, PPPM = 1000 W), but RoHS-compliant commercial grade (E3), not halogen-free or AEC-Q101 qualified. | Limited to non-automotive industrial or consumer applications where AEC-Q101 and halogen-free are not mandated. | Select when cost sensitivity outweighs automotive qualification and material compliance requirements. |
| SAC8.5 | Lower PPPM (600 W), same VWM (8.5 V), DO-214AC (SMA) package - smaller footprint but higher RθJA (90 °C/W). | Suitable only for lower-energy transients; thermal derating required above 85 °C ambient. | Choose for space-constrained consumer designs where full 1000 W capability is unnecessary. |
Compared with SMB10J8.5AHM3_A/H, SMBJ8.5AHE3_A/H sacrifices automotive qualification and halogen-free status for lower cost, while SAC8.5 trades surge capacity and thermal performance for reduced board area - making SMB10J8.5AHM3_A/H the optimal choice for AEC-Q101–mandated 12 V rail protection with full 1000 W headroom.
Availability
SMB10J8.5AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and ADAS sensor modules requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free materials.
Supply support for SMB10J8.5AHM3_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 and automotive-grade validation.
The SMB10J series targets high-power transient suppression in demanding environments, engineered specifically for ISO 7637-2 and ISO 16750-2 compliant automotive power systems and industrial equipment with stringent surge immunity needs.
FAQ
What is the maximum clamping voltage of SMB10J8.5AHM3_A/H at its rated peak pulse current?
The SMB10J8.5AHM3_A/H has a maximum clamping voltage (VC) of 14.4 V at its specified peak pulse current (IPPM) of 69.4 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components see limited overvoltage stress during surge events. The SMB10J8.5AHM3_A/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) when mounted per recommended pad layout.
Is SMB10J8.5AHM3_A/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SMB10J8.5AHM3_A/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number: 88422, Revision: 09-Jan-2024). The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101–qualified construction. This makes SMB10J8.5AHM3_A/H appropriate for safety-critical automotive subsystems including engine control, braking, and ADAS, where validated reliability under thermal, mechanical, and electrical stress is mandatory.
What does the "HM3" suffix indicate in SMB10J8.5AHM3_A/H?
The "HM3" suffix in SMB10J8.5AHM3_A/H identifies it as halogen-free, RoHS-compliant, and AEC-Q101 qualified - distinguishing it from commercial-grade variants like E3. It also specifies packaging: "H" denotes 7" tape-and-reel (750 units), and "_A/H" indicates revision A in that reel format. This suffix ensures traceability to material composition, qualification status, and assembly compatibility per J-STD-020 MSL Level 1.
How does the SMB10J8.5AHM3_A/H compare to bidirectional TVS diodes in the same family?
SMB10J8.5AHM3_A/H is unidirectional, offering 1000 W PPPM and optimized for DC rail protection where polarity is fixed. Bidirectional equivalents (e.g., SMB8J8.5CA) provide 800 W PPPM and symmetric clamping for AC or floating signal lines. The SMB10J8.5AHM3_A/H's higher power rating, lower clamping voltage, and dedicated anode/cathode terminals make it superior for 12 V automotive power rails, whereas bidirectional types suit CAN bus or audio lines needing dual-polarity suppression.
What is the thermal resistance from junction to lead (RθJL) for SMB10J8.5AHM3_A/H, and why does it matter?
The SMB10J8.5AHM3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, per Vishay's thermal characteristics table. This low value enables efficient heat transfer from the silicon die to the PCB copper pads through the leads, supporting sustained surge handling without thermal runaway. It directly informs layout decisions - using minimum 0.2" × 0.2" copper pads per terminal ensures the device remains within its 150 °C TJ limit during repeated 1000 W pulses.
SMB10J8.5AHM3_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:
- 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_A/H FAQ
1.How can I place an order for SMB10J8.5AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J8.5AHM3_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 SMB10J8.5AHM3_A/H reliable?
The price and inventory of SMB10J8.5AHM3_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 SMB10J8.5AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J8.5AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J8.5AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J8.5AHM3_A/H?
SMB10J8.5AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J8.5AHM3_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 SMB10J8.5AHM3_A/H?
For technical support, including SMB10J8.5AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J8.5AHM3_A/H requirements.
6.How does Aetrix verify that SMB10J8.5AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J8.5AHM3_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 SMB10J8.5AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J8.5AHM3_A/H?
All SMB10J8.5AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J8.5AHM3_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 SMB10J8.5AHM3_A/H part is unused and in its original packaging.
Return procedure for SMB10J8.5AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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