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Vishay General Semiconductor - Diodes Division SMB10J8.5AHM3/I
- Part No.:
- SMB10J8.5AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J8.5AHM3/I.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,039
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Product details
Overview
SMB10J8.5AHM3/I 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/I datasheet, SMB10J8.5AHM3/I pinout, SMB10J8.5AHM3/I application, or SMB10J8.5AHM3/I equivalent, this device is selected for robust ESD and lightning surge immunity in AEC-Q101-compliant systems where low clamping voltage, fast response (<1 ns), and halogen-free RoHS compliance are mandatory design requirements.
Technical Context
This TVS diode operates as a shunt-clamping protector: under normal bias it presents <1 µA leakage at 8.5 V, then rapidly avalanches to clamp transients up to 1000 W without damage. Its glass-passivated junction ensures stable VBR tolerance (±5%) and long-term reliability across -55 °C to +150 °C junction temperature range.
The SMB10J8.5AHM3/I uses a single PN junction structure optimized for unidirectional operation - cathode marked with band - and meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance standards. Its thermal resistance (RθJA = 72 °C/W) is validated on 0.2" × 0.2" copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - maximum continuous reverse operating voltage before conduction begins; sets safe margin above 5 V or 8 V rail systems |
| VBR @ IT = 1 mA | 9.44–10.4 V - guaranteed avalanche initiation window; ensures predictable turn-on during fast transients |
| VC @ IPPM = 20 A | 14.4 V - clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels |
| PPPM | 1000 W - peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge testing |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine); withstands inrush or load-dump events |
| Junction Temp Range | -55 °C to +150 °C - qualified for under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - certified for automotive electronics per stress test standard, including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak). Cathode indicated by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected line (e.g., battery feed or sensor supply); conducts during positive transients when cathode is grounded |
| Cathode | Reference/Ground side | Connected to system ground or low-impedance return path; defines unidirectional clamping polarity and enables precise placement relative to protected IC input |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | HM3 suffix confirms full compliance with JEDEC J-STD-609A Class 1 and EU RoHS Directive 2011/65/EU |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, high-temp reverse bias, and accelerated life testing |
| Low incremental surge resistance | Enables tight VC/VBR ratio (1.44×), minimizing let-through energy during clamping |
| Glass passivated junction | Ensures stable leakage performance and VBR repeatability over 10+ years in harsh environments |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow compatibility without dry-pack or baking requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in engine control modules. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed directly at connector entry point to divert >100 A surges away from front-end amplifiers and ADCs. Use Value: Clamps to 14.4 V within <1 ns, limiting stress on 16 V-rated signal chain components while maintaining AEC-Q100 Grade 1 compatibility. |
Use Scenario: Safeguarding 24 V DC digital input cards in programmable logic controllers against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each isolated input channel, mounted adjacent to optocoupler anode terminals. Use Value: Withstands 1000 W surges without degradation, enabling 10-year field life in factory automation with minimal maintenance. |
| Consumer Power Adapter Input | Telecom DC Power Feed Protection |
|
Use Scenario: Secondary-side surge suppression on 5–12 V output rails of wall adapters and USB PD chargers exposed to mains-coupled noise. IC Role / Device Role / Timing Role: Final-stage TVS between DC-DC converter output and USB port VBUS line to meet IEC 61000-4-5 Ed. 3 Class B immunity. Use Value: 8.5 V VWM provides 15% headroom above 7 V nominal rail, while 14.4 V VC avoids false triggering of downstream OVP circuits. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, access points) from longitudinal surges on 48 V DC feed lines entering building infrastructure. IC Role / Device Role / Timing Role: Unidirectional clamp on each conductor pair upstream of DC-DC controller, referenced to local chassis ground. Use Value: 1000 W rating handles combined-mode surges up to 4 kV (IEC 61000-4-5), and AEC-Q101 qualification ensures reliability in outdoor telecom 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 |
|---|---|---|---|
| SMBJ8.5AHE3/I | Same VWM, VBR, VC, and PPPM; RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Approved for commercial/industrial use only; not suitable for automotive production | Select when halogen-free content and automotive qualification are not required; lower cost alternative for non-automotive designs |
| SMAJ8.5A-HM3 | Same electrical specs but in smaller SMA (DO-214AC) package; 500 W PPPM (vs. 1000 W); RθJA = 90 °C/W | Limited to lower-energy transients (IEC 61000-4-2 Level 4 only); unsuitable for load dump or IEC 61000-4-5 | Choose only for space-constrained consumer applications with ≤500 W surge exposure and no automotive requirements |
Compared with SMBJ8.5AHE3/I and SMAJ8.5A-HM3, the SMB10J8.5AHM3/I uniquely delivers 1000 W surge capability in a halogen-free, AEC-Q101-qualified SMB package - making it the only option among the three for automotive-grade 24 V system protection requiring both high power handling and environmental compliance.
Availability
SMB10J8.5AHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, consumer power adapter outputs, and telecom DC feed protection requiring stable component supply across extended temperature and high-reliability programs.
Supply support for SMB10J8.5AHM3/I 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, precision, and application-specific optimization.
The SMB10J series targets high-power transient suppression in automotive and industrial environments, engineered to exceed IEC 61000-4-5 and ISO 7637-2 requirements while supporting AEC-Q101 qualification and halogen-free manufacturing.
FAQ
What is the clamping voltage of SMB10J8.5AHM3/I at its rated peak pulse current?
The SMB10J8.5AHM3/I 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 and guaranteed per Vishay Document Number 88422, ensuring consistent overvoltage limiting for protected circuitry downstream of the SMB10J8.5AHM3/I.
Is SMB10J8.5AHM3/I suitable for automotive applications?
Yes, SMB10J8.5AHM3/I is AEC-Q101 qualified and specifically designed for automotive use - including engine control units, body electronics, and ADAS sensor interfaces. Its HM3 suffix denotes halogen-free, RoHS-compliant construction, and its -55 °C to +150 °C operating range meets under-hood thermal requirements for sustained reliability in vehicles.
What does the "HM3" suffix mean in SMB10J8.5AHM3/I?
The "HM3" suffix in SMB10J8.5AHM3/I indicates halogen-free, RoHS-compliant construction meeting JEDEC J-STD-609A Class 1, plus AEC-Q101 qualification. It replaces legacy "M3" with added automotive stress validation, and distinguishes the part from commercial-grade "E3" or "HE3" variants that lack halogen-free certification or automotive qualification.
How does SMB10J8.5AHM3/I differ from SMBJ8.5AHE3/I?
SMB10J8.5AHM3/I and SMBJ8.5AHE3/I share identical electrical parameters (VWM, VBR, VC, PPPM) but differ in qualification and material content: SMB10J8.5AHM3/I is halogen-free and AEC-Q101 qualified, whereas SMBJ8.5AHE3/I is RoHS-compliant only and rated for commercial/industrial use. The HM3 variant is mandatory for automotive production builds.
What PCB pad layout is recommended for optimal thermal and surge performance of SMB10J8.5AHM3/I?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMB10J8.5AHM3/I to achieve rated 1000 W pulse power and 72 °C/W thermal resistance. The pad layout must follow DO-214AA footprint dimensions, avoid thermal reliefs on high-current paths, and maintain ≥0.085" (2.16 mm) trace width for cathode/anode connections to sustain 100 A IFSM.
SMB10J8.5AHM3/I 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/I FAQ
1.How can I place an order for SMB10J8.5AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J8.5AHM3/I 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/I reliable?
The price and inventory of SMB10J8.5AHM3/I 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/I is usually 5 days.
3.What payment methods are accepted for SMB10J8.5AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J8.5AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J8.5AHM3/I?
SMB10J8.5AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J8.5AHM3/I 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/I?
For technical support, including SMB10J8.5AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J8.5AHM3/I requirements.
6.How does Aetrix verify that SMB10J8.5AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMB10J8.5AHM3/I 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/I meets industry standards.
7.What is the process for return or replacement of SMB10J8.5AHM3/I?
All SMB10J8.5AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J8.5AHM3/I, 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/I part is unused and in its original packaging.
Return procedure for SMB10J8.5AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J8.5AHM3/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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