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Vishay General Semiconductor - Diodes Division SMB10J8.5AHM3_A/I
- Part No.:
- SMB10J8.5AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J8.5AHM3_A/I.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,982
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Product details
Overview
SMB10J8.5AHM3_A/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 power 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 power supply rails.
For engineers reviewing the SMB10J8.5AHM3_A/I datasheet, SMB10J8.5AHM3_A/I pinout, SMB10J8.5AHM3_A/I application, or SMB10J8.5AHM3_A/I 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 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that diverts transient energy above its breakdown threshold to ground while maintaining low clamping voltage under 20 A surge. Its glass-passivated junction ensures stable VBR tolerance and fast response time (<1 ns), meeting ANSI/IEEE C62.35 standards for surge immunity.
The SMB10J8.5AHM3_A/I is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 72 °C/W and RθJL = 20 °C/W. Its halogen-free, RoHS-compliant construction and MSL Level 1 rating support lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA; defines safe operating margin below breakdown |
| VBR (min/max) | 9.44 V / 10.4 V at IT = 1 mA - tight breakdown window ensures predictable turn-on across temperature and production lot |
| VC @ IPPM | 14.4 V at IPPM = 20 A (10/1000 µs) - clamping voltage limits downstream IC stress during ESD or load-switching transients |
| PPPM | 1000 W - peak pulse power handling capacity determines survivability against IEC 61000-4-5 Level 4 surges |
| IFSM | 100 A - non-repetitive forward surge rating supports robustness against accidental polarity reversal or inrush events |
| TJ max | +150 °C - enables use in under-hood automotive environments and thermally constrained industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
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. Cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to protected line (e.g., 12 V rail); conducts during reverse-transient clamping when cathode is grounded |
| Cathode | Clamping reference node | Typically tied to system ground; establishes VBR and VC thresholds; marked by visible band on package |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; eliminates risk of junction oxidation during reflow or operation |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units, ADAS sensors, and body electronics |
| MSL Level 1, 260 °C peak | Enables single-pass lead-free reflow without moisture-induced popcorning or delamination |
| Low profile SMB package | 0.220" × 0.130" footprint saves PCB area vs. larger DO-214AB/DO-214AC; compatible with standard SMT pick-and-place |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and supports green manufacturing requirements for Tier 1 automotive suppliers |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to limit transient overvoltage. Use Value: Clamps 20 A surges to ≤14.4 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding 12 V DC input stages of PLC modules and motor drives against inductive switching spikes and lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end surge suppression device mounted directly at connector entry point. Use Value: Absorbs 1000 W peak pulses without degradation, enabling compliance with IEC 61000-4-5 Level 4 (4 kV/2 Ω) |
| Consumer USB Port Protection | Telecom Line Interface |
|
Use Scenario: Guarding USB 2.0 VBUS and D+/D- lines in portable docking stations against ESD and hot-plug transients. IC Role / Device Role / Timing Role: Standoff-rated TVS with low capacitance (<100 pF at 0 V) minimizing signal distortion. Use Value: Maintains 8.5 V working voltage margin while clamping ±15 kV contact ESD per IEC 61000-4-2. |
Use Scenario: Shielding Ethernet PHY and DSL line drivers from induced surges on outdoor telecom wiring. IC Role / Device Role / Timing Role: Secondary protection stage following gas discharge tube (GDT) primary suppression. Use Value: Fast <1 ns response complements slower GDTs, reducing let-through voltage to sub-20 V levels. |
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/I | Same electrical specs (VWM = 8.5 V, VC = 14.4 V), but uses E3 suffix - RoHS-compliant commercial grade, not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select SMBJ8.5AHE3_A/I for cost-sensitive non-automotive applications requiring identical clamping performance |
| SMAJ8.5A-HM3_A/I | Lower PPPM (400 W vs. 1000 W); same VWM/VBR/VC; SMA package (smaller, higher thermal resistance) | Insufficient for IEC 61000-4-5 Level 4; limited to lower-energy transients like ESD or local switching noise | Choose SMAJ8.5A-HM3_A/I only when board space is critical and surge threat level is ≤IEC 61000-4-2 ESD |
Compared with SMBJ8.5AHE3_A/I and SMAJ8.5A-HM3_A/I, SMB10J8.5AHM3_A/I uniquely delivers AEC-Q101 qualification plus 1000 W surge capability in an SMB footprint - making it the only option among the three for automotive front-end power rail protection.
Availability
SMB10J8.5AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power supply inputs, and telecom line protection requiring stable component supply and long-term lifecycle assurance.
Supply support for SMB10J8.5AHM3_A/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, efficiency, and application-specific optimization.
The SMB10J series targets high-power transient suppression in harsh environments, engineered specifically for automotive and industrial systems demanding AEC-Q101 validation and robust 1000 W surge handling.
FAQ
What is the clamping voltage of SMB10J8.5AHM3_A/I at its rated peak pulse current?
The SMB10J8.5AHM3_A/I has a maximum clamping voltage (VC) of 14.4 V when subjected to a 20 A peak pulse current 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. The SMB10J8.5AHM3_A/I maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMB10J8.5AHM3_A/I suitable for automotive applications?
Yes, SMB10J8.5AHM3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It meets requirements for engine control units, ADAS sensors, and body electronics where reliability under thermal cycling, vibration, and high-energy transients is mandatory. The SMB10J8.5AHM3_A/I undergoes rigorous stress testing per AEC-Q101 including HTGB, H3TRB, and ESD.
What does the "HM3" suffix mean in SMB10J8.5AHM3_A/I?
The "HM3" suffix in SMB10J8.5AHM3_A/I denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It distinguishes this variant from commercial-grade versions (e.g., E3/M3) and confirms compliance with automotive environmental and reliability standards. The "_A/I" indicates tape-and-reel packaging in 13-inch reels (I = 3200 units per reel), and the SMB10J8.5AHM3_A/I is supplied with matte tin-plated leads certified to J-STD-002.
How does SMB10J8.5AHM3_A/I differ from SMBJ8.5AHE3_A/I?
SMB10J8.5AHM3_A/I and SMBJ8.5AHE3_A/I share identical electrical parameters (VWM = 8.5 V, VBR = 9.44–10.4 V, VC = 14.4 V), but differ in qualification and material content: SMB10J8.5AHM3_A/I is AEC-Q101 qualified and halogen-free, while SMBJ8.5AHE3_A/I is RoHS-compliant commercial grade without automotive qualification. Both use the same SMB package, but only SMB10J8.5AHM3_A/I is approved for under-hood automotive deployment.
What is the thermal resistance of SMB10J8.5AHM3_A/I?
The SMB10J8.5AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. These values inform thermal design margins when estimating junction temperature rise under sustained power dissipation or repeated surge events. The SMB10J8.5AHM3_A/I's RθJL enables effective heat conduction through solder joints into PCB copper planes.
SMB10J8.5AHM3_A/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:
- 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/I FAQ
1.How can I place an order for SMB10J8.5AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J8.5AHM3_A/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_A/I reliable?
The price and inventory of SMB10J8.5AHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J8.5AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J8.5AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J8.5AHM3_A/I?
SMB10J8.5AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J8.5AHM3_A/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_A/I?
For technical support, including SMB10J8.5AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J8.5AHM3_A/I requirements.
6.How does Aetrix verify that SMB10J8.5AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J8.5AHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J8.5AHM3_A/I?
All SMB10J8.5AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J8.5AHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for SMB10J8.5AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J8.5AHM3_A/I Tags
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