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Vishay General Semiconductor - Diodes Division SMB10J12AHE3_A/H
- Part No.:
- SMB10J12AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J12AHE3_A/H.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,232
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Product details
Overview
SMB10J12AHE3_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 12 V stand-off voltage (VWM), 13.3–14.7 V breakdown voltage (VBR at 1 mA), 19.9 V clamping voltage (VC) at 50.3 A peak pulse current, and 1000 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMB10J12AHE3_A/H datasheet, SMB10J12AHE3_A/H pinout, SMB10J12AHE3_A/H application, or SMB10J12AHE3_A/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 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 12 V and rapidly transitions to low-impedance conduction above VBR = 13.3–14.7 V to limit transient overvoltages. Its glass-passivated junction ensures stable leakage (<5 µA at VWM) and repeatable breakdown behavior across temperature (-55 °C to +150 °C).
The SMB10J12AHE3_A/H delivers 1000 W peak pulse power handling with <1 ps response time and meets MSL level 1 per J-STD-020 (260 °C reflow peak). Its thermal resistance is RθJA = 72 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling reliable operation under repetitive surge conditions when mounted on recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 12 V systems |
| VBR (min/max) | 13.3 V / 14.7 V at 1 mA - guaranteed breakdown onset range; ensures consistent clamping initiation across production lots |
| VC @ IPPM | 19.9 V at 50.3 A - clamped voltage during 10/1000 µs surge; limits downstream IC stress to ≤20 V |
| PPPM | 1000 W - peak pulse power dissipation capability; supports ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges |
| IFSM | 100 A - 8.3 ms half-sine surge current rating; withstands inrush and load-dump transients in automotive 12 V networks |
| Junction Temp | -55 °C to +150 °C - extended operating range enables under-hood and industrial ambient deployment |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
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; polarity indicated by cathode band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected line's lower-potential side (e.g., GND or return rail); forms clamping loop with cathode |
| Cathode | Reverse-biased terminal / surge shunt node | Connected to protected line's higher-potential side (e.g., 12 V rail); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, high-temp reverse bias, and bond wire integrity |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<5 µA at VWM) over lifetime and temperature |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard 7" tape-and-reel SMT pick-and-place equipment |
| MSL Level 1 | Supports lead-free reflow up to 260 °C peak without moisture-induced popcorning or delamination |
| 1000 W peak pulse power | Provides robust protection against ISO 7637-2 Load Dump (Pulse 5a) and IEC 61000-4-5 Combination Wave surges |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power pins from load dump and inductive switching transients in 12 V vehicle electrical systems. IC Role / Device Role: Unidirectional TVS clamp placed between 12 V supply rail and chassis ground, triggered only during positive overvoltage events. Use Value: Limits clamped voltage to 19.9 V, preventing damage to 3.3 V/5 V logic ICs and ensuring compliance with ISO 16750-2 Class D surge immunity. |
Use Scenario: Shields 24 V digital input optocoupler circuits from field-wiring induced surges in factory automation environments. IC Role / Device Role: Standoff-rated TVS connected across input terminals to absorb fast-rising transients before reaching isolation barrier. Use Value: Withstands 1000 W pulses while maintaining <5 µA leakage at 24 V nominal, preserving input threshold accuracy and long-term reliability. |
| Consumer Appliance Power Supply | Telecom Base Station DC Feeder Line |
|
Use Scenario: Guards AC/DC adapter secondary-side 12 V output against ESD and lightning-induced surges entering via connected peripherals. IC Role / Device Role: Secondary-side TVS on regulated DC output rail, coordinated with primary-side MOV and Y-cap filtering. Use Value: Fast <1 ps response and low clamping ratio (VC/VBR ≈ 1.42) minimize overshoot into downstream regulators and USB controllers. |
Use Scenario: Installed on -48 V DC feeder lines feeding remote radio units to suppress induced surges from nearby lightning strikes. IC Role / Device Role: Unidirectional TVS referenced to system ground, absorbing negative-going transients on telecom power infrastructure. Use Value: 100 A IFSM rating handles high-energy 8.3 ms surges; AEC-Q101 qualification ensures proven field reliability in harsh outdoor deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A-E3/52 | Same SMB package, identical VWM/VBR/VC, but commercial-grade (non-AEC-Q101) and RoHS-compliant only (no halogen-free option) | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select SMBJ12A-E3/52 when cost sensitivity outweighs automotive qualification requirements and halogen-free material is not required |
| 1.5SMC12A | Higher-power SMC package (1500 W), same 12 V VWM, but larger footprint (7.11 mm × 6.22 mm vs. SMB's 4.57 mm × 3.94 mm) and higher RθJA (50 °C/W) | Better suited for high-energy surge zones (e.g., main power entry) where board space permits larger package | Choose 1.5SMC12A only if system-level surge testing exceeds 1000 W or thermal constraints allow larger thermal mass |
Compared with SMBJ12A-E3/52, the SMB10J12AHE3_A/H adds AEC-Q101 qualification and halogen-free compliance; versus 1.5SMC12A, it trades 500 W extra power for 40 % smaller PCB area and superior thermal performance in constrained layouts.
Availability
SMB10J12AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SMB10J12AHE3_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, precision, and application-specific optimization.
The SMB10J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - particularly automotive and industrial systems demanding AEC-Q101 validation and robust surge immunity.
FAQ
What is the clamping voltage of SMB10J12AHE3_A/H at its rated peak pulse current?
The SMB10J12AHE3_A/H has a maximum clamping voltage (VC) of 19.9 V at 50.3 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured and guaranteed per Vishay Document Number 88422, ensuring predictable overvoltage limiting for downstream 20 V-tolerant components. The SMB10J12AHE3_A/H maintains this clamping performance across its full operating temperature range.
Is SMB10J12AHE3_A/H suitable for automotive applications?
Yes, SMB10J12AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HE3" indicating RoHS-compliant and AEC-Q101 qualified construction. It passes stress tests including high-temperature reverse bias, temperature cycling, and bond wire strength verification. The SMB10J12AHE3_A/H is deployed in body control modules, infotainment power supplies, and ADAS sensor interfaces where automotive-grade reliability is mandatory.
What does the "_A/H" suffix in SMB10J12AHE3_A/H indicate?
The "_A/H" suffix in SMB10J12AHE3_A/H denotes the revision code ("A") and packaging configuration ("H" = 7" diameter plastic tape and reel, 750 units per reel). This matches Vishay's ordering convention in Document 88422, where "H" specifies the preferred package code for automated SMT assembly. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, distinguishing it from commercial-grade variants like SMBJ12A-E3/52.
How does SMB10J12AHE3_A/H compare to bidirectional TVS diodes with the same VWM?
Unlike bidirectional variants (e.g., SMB8J12CA), the SMB10J12AHE3_A/H is unidirectional and features a cathode band for polarity identification. It offers higher peak pulse power (1000 W vs. 800 W for SMB8J12CA) and is optimized for DC rail protection where only positive-going transients require suppression. The SMB10J12AHE3_A/H is not interchangeable with bidirectional types without circuit redesign due to polarity and clamping asymmetry.
What is the thermal resistance of SMB10J12AHE3_A/H, and how does it affect layout design?
The SMB10J12AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures during repetitive surges, PCB layout must adhere to Vishay's recommended pad dimensions and avoid excessive trace length or narrow copper pours. The SMB10J12AHE3_A/H thermal performance is validated only with this mounting condition.
SMB10J12AHE3_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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 50.3A
- 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)
SMB10J12AHE3_A/H FAQ
1.How can I place an order for SMB10J12AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J12AHE3_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 SMB10J12AHE3_A/H reliable?
The price and inventory of SMB10J12AHE3_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 SMB10J12AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J12AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J12AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J12AHE3_A/H?
SMB10J12AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J12AHE3_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 SMB10J12AHE3_A/H?
For technical support, including SMB10J12AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J12AHE3_A/H requirements.
6.How does Aetrix verify that SMB10J12AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J12AHE3_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 SMB10J12AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J12AHE3_A/H?
All SMB10J12AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J12AHE3_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 SMB10J12AHE3_A/H part is unused and in its original packaging.
Return procedure for SMB10J12AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J12AHE3_A/H Tags
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