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Vishay General Semiconductor - Diodes Division SMB10J12AHE3_A/I
- Part No.:
- SMB10J12AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J12AHE3_A/I.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,300
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Product details
Overview
SMB10J12AHE3_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 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 (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the SMB10J12AHE3_A/I datasheet, SMB10J12AHE3_A/I pinout, SMB10J12AHE3_A/I application, or SMB10J12AHE3_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 remains non-conductive below VWM = 12 V and rapidly transitions to low-impedance conduction above VBR to limit transient overvoltages. Its glass-passivated junction ensures stable leakage (<5 µA at VWM) and repeatable breakdown behavior under repetitive surge stress.
Designed per ANSI/IEEE C62.35 standards, it delivers 1000 W peak pulse power handling with 10/1000 µs waveform, thermal resistance RθJA = 72 °C/W, and junction temperature range of –55 °C to +150 °C - enabling robust operation in under-hood automotive environments and industrial control cabinets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 13.3 V / 14.7 V at IT = 1 mA - guaranteed breakdown threshold for reliable clamping activation |
| VC @ IPPM | 19.9 V at 50.3 A - clamped voltage during 1000 W surge, limiting downstream IC stress |
| PPPM | 1000 W (10/1000 µs) - energy-handling capacity for automotive load-dump and ISO 7637-2 pulse 5a events |
| IFSM | 100 A (8.3 ms half-sine) - surge current rating for short-duration forward faults |
| TJ max | +150 °C - enables use in high-ambient-temperature locations like engine control units |
| Polarity | Unidirectional - cathode marked with band; blocks reverse current until breakdown |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards; meets UL 94 V-0 flammability rating and MSL level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential rail in clamping configuration |
| Cathode | Reverse-biased terminal / protected line connection | Marked with color band; connects to line being protected (e.g., 12 V battery rail) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal stress |
| Low profile SMB package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| MSL Level 1 | Allows unlimited floor life and single-reflow processing without dry-pack requirements |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS compliance; HM3 variant adds halogen-free molding compound |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role: Primary clamping element placed between battery rail and upstream fuse or DC-DC converter input. Use Value: Limits transient voltage to ≤19.9 V during 1000 W surges, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and inductive switching noise in factory automation systems. IC Role / Device Role: Unidirectional TVS placed across sensor output and ground, referenced to local ground plane. Use Value: Clamps fast-rising transients (e.g., IEC 61000-4-2 ±8 kV contact discharge) while maintaining <5 µA leakage at 12 V nominal operation. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: Safeguarding PoE-powered network switches and base stations from lightning-induced surges on 48 V DC input lines. IC Role / Device Role: First-line transient suppressor on primary DC input before DC-DC regulation and hot-swap controller. Use Value: Withstands repeated 10/1000 µs surges up to 1000 W without degradation, supporting telecom equipment MTBF requirements. | Use Scenario: Protecting BLDC motor driver inputs in smart washing machines from back-EMF spikes during commutation. IC Role / Device Role: Mounted directly at motor driver IC power pins to clamp inductive kickback before reaching gate drivers. Use Value: Fast response time and low clamping voltage reduce stress on 600 V MOSFETs, extending lifetime in high-cycle appliance applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A-E3/52 | Same SMB package, identical VWM/VBR/VC specs, but commercial-grade (non-AEC-Q101) | Lacks automotive qualification; suitable for industrial/commercial designs without automotive certification needs | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification assurance |
| 1.5SMC12A | Higher-power SMC package (1500 W PPPM), same 12 V VWM, but larger footprint and higher RθJA (50 °C/W) | Better energy handling but requires more board space; less suitable for dense automotive modules | Choose when surge energy exceeds 1000 W or thermal margin is constrained by ambient conditions |
Compared with SMBJ12A-E3/52, SMB10J12AHE3_A/I adds AEC-Q101 validation for automotive deployment; versus 1.5SMC12A, it trades peak power for compact SMB layout and lower thermal resistance in confined spaces.
Availability
SMB10J12AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB10J12AHE3_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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMB10J series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for automotive and industrial surge immunity where AEC-Q101 compliance, low clamping voltage, and automated assembly compatibility are critical.
FAQ
What is the clamping voltage of SMB10J12AHE3_A/I at its rated peak pulse current?
The SMB10J12AHE3_A/I has a maximum clamping voltage (VC) of 19.9 V when subjected to its rated peak pulse current (IPPM) of 50.3 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting during surge events. The SMB10J12AHE3_A/I maintains this clamping performance across its specified junction temperature range of –55 °C to +150 °C.
Is SMB10J12AHE3_A/I qualified for automotive applications?
Yes, SMB10J12AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's documentation (Document Number: 88422, Revision: 09-Jan-2024). The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, making SMB10J12AHE3_A/I suitable for under-hood and chassis-mounted automotive electronics.
What does the "_A/I" suffix mean in SMB10J12AHE3_A/I?
The "_A/I" suffix in SMB10J12AHE3_A/I indicates the revision code ("A") and packaging format ("I" = 13-inch tape and reel, 3200 units per reel). Per Vishay's ordering information table, "I" corresponds to 13" diameter plastic tape and reel delivery mode, while "HE3" confirms RoHS-compliant and AEC-Q101 qualified construction. The full part number SMB10J12AHE3_A/I uniquely identifies this specific manufacturing and packaging variant.
How does SMB10J12AHE3_A/I differ from bidirectional variants like SMB8J12CA?
SMB10J12AHE3_A/I is unidirectional with cathode band marking and 1000 W peak pulse power, whereas SMB8J12CA is bidirectional with symmetrical breakdown and 800 W rating. The unidirectional SMB10J12AHE3_A/I provides lower clamping voltage in DC applications and supports higher surge current (50.3 A vs. 40.2 A), making it preferred for battery-rail protection. SMB10J12AHE3_A/I also carries AEC-Q101 qualification, unlike many SMB8J variants.
What PCB pad layout is recommended for optimal thermal and surge performance of SMB10J12AHE3_A/I?
Vishay specifies mounting SMB10J12AHE3_A/I on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 1000 W peak pulse power and thermal resistance RθJA = 72 °C/W. Minimum pad dimensions are 0.060" × 0.086" (1.52 mm × 2.18 mm); exceeding these improves heat dissipation and surge endurance. Use internal ground planes and thermal vias beneath pads for enhanced thermal management in high-reliability SMB10J12AHE3_A/I deployments.
SMB10J12AHE3_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):
- 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/I FAQ
1.How can I place an order for SMB10J12AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J12AHE3_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 SMB10J12AHE3_A/I reliable?
The price and inventory of SMB10J12AHE3_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 SMB10J12AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMB10J12AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J12AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J12AHE3_A/I?
SMB10J12AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J12AHE3_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 SMB10J12AHE3_A/I?
For technical support, including SMB10J12AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J12AHE3_A/I requirements.
6.How does Aetrix verify that SMB10J12AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB10J12AHE3_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 SMB10J12AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMB10J12AHE3_A/I?
All SMB10J12AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J12AHE3_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 SMB10J12AHE3_A/I part is unused and in its original packaging.
Return procedure for SMB10J12AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J12AHE3_A/I Tags
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