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Vishay General Semiconductor - Diodes Division SMB10J12AHE3_B/H
- Part No.:
- SMB10J12AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J12AHE3_B/H.pdf
- Description:
- 1KW,12V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,871
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Product details
Overview
SMB10J12AHE3_B/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), 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 - deployed in automotive sensor interfaces and industrial power supply inputs.
For engineers reviewing the SMB10J12AHE3_B/H datasheet, SMB10J12AHE3_B/H pinout, SMB10J12AHE3_B/H application, or SMB10J12AHE3_B/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.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below 12 V (VWM) and rapidly transitions to low-impedance conduction above its 13.3–14.7 V breakdown threshold (VBR @ 1 mA). Its response time is sub-nanosecond, enabling suppression of fast transients induced by inductive switching or ESD events.
The device uses a glass-passivated silicon junction and achieves thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It is rated for operating junction temperatures from –55 °C to +150 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse working voltage before leakage exceeds 5 µA; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 13.3 V / 14.7 V @ 1 mA - guaranteed breakdown range ensures consistent turn-on across production lots under standardized test conditions. |
| VC @ IPPM | 19.9 V @ 50.3 A - clamping voltage during 10/1000 µs surge; limits downstream IC stress to ≤20 V during 1000 W transient events. |
| PPPM | 1000 W - peak pulse power handling capability with 10/1000 µs waveform; enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges. |
| IFSM | 100 A - non-repetitive forward surge current rating (8.3 ms half-sine); supports fault-current tolerance in power rail applications. |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood automotive environments and enclosed industrial enclosures. |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
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 current entry / surge return path | Connected to protected line (e.g., 12 V rail); conducts during reverse-biased transient clamping. |
| Cathode | Clamping reference / ground reference | Marked with band; tied to system ground or low-impedance return plane to establish clamping voltage baseline. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control units, body controllers, and ADAS sensor modules. |
| Glass-passivated junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives in humid or thermally cycled environments. |
| Low profile SMB package | Height ≤ 2.2 mm enables use in space-constrained PCB layouts while maintaining 1000 W surge capability. |
| MSL Level 1 rating | Supports standard SMT reflow without preconditioning; compatible with 260 °C peak temperature profiles. |
| Unidirectional polarity | Enables DC rail protection without AC coupling concerns; cathode band simplifies orientation verification during assembly. |
Applications
| Automotive Sensor Interface | Industrial 24 V Power Input |
|---|---|
Use Scenario: Protecting CAN/LIN transceivers and analog sensor front-ends (e.g., pressure, temperature) from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Clamping transient energy away from sensitive input pins of communication ICs and ADCs. Use Value: Limits voltage excursion to ≤19.9 V during 1000 W surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding PLC I/O modules and motor drive logic supplies against inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Acting as primary overvoltage clamp on 24 V DC input rails upstream of DC/DC converters. Use Value: Absorbs 1000 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-earth) requirements. |
| Consumer USB-C Power Delivery | Telecom Base Station Bias Rail |
Use Scenario: Secondary surge protection on 5–20 V USB-C PD bus lines after primary common-mode chokes and filters. IC Role / Device Role / Timing Role: Fast-response shunt element limiting differential-mode overvoltage spikes during hot-plug events. Use Value: Sub-ns response and 19.9 V clamping prevent damage to USB-C controller ICs rated for ≤24 V absolute maximum. |
Use Scenario: Protecting RF amplifier bias networks (e.g., GaN FET gate drivers) from lightning-induced surges on telecom tower power feeds. IC Role / Device Role / Timing Role: High-power transient shunt placed directly at bias regulator output to minimize trace inductance. Use Value: 100 A IFSM rating supports single-event fault clearing without fuse coordination, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12AHE3_A/H | Same VWM (12 V), VBR (13.3–14.7 V), VC (19.9 V), but lower PPPM (600 W vs. 1000 W). | Rated for lighter-duty surge environments (e.g., consumer port protection); not suitable for automotive load-dump. | Select SMBJ12AHE3_A/H only when peak surge energy is ≤600 W and AEC-Q101 is not required. |
| 1.5SMC12AH | Same electrical specs but in larger SMC (DO-214AB) package; higher RθJA (50 °C/W) and different pad layout. | Requires PCB redesign due to 2.54 mm lead spacing and 4.5 mm height; better suited for manual repair or high-reliability aerospace. | Choose 1.5SMC12AH only if legacy SMC footprint exists or thermal derating margin must exceed 72 °C/W. |
Compared with SMBJ12AHE3_A/H and 1.5SMC12AH, SMB10J12AHE3_B/H uniquely delivers 1000 W surge capacity in an AEC-Q101-qualified SMB package - making it the only option meeting both automotive-grade reliability and high-power clamping in minimal board area.
Availability
SMB10J12AHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial 24 V power inputs, and telecom bias rail protection requiring stable component supply across multi-year production cycles.
Supply support for SMB10J12AHE3_B/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, efficiency, and application-specific performance.
The SMB10J series is part of Vishay's TRANSZORB® TVS platform engineered for high-power-density transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 compliance and 1000 W surge handling are mandatory.
FAQ
What is the clamping voltage of SMB10J12AHE3_B/H at its rated peak pulse current?
The SMB10J12AHE3_B/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 per ANSI/IEEE C62.35 and ensures downstream circuitry sees no more than 19.9 V during full-rated transient events. The SMB10J12AHE3_B/H maintains this clamping performance across its qualified temperature range (–55 °C to +150 °C).
Is SMB10J12AHE3_B/H suitable for automotive applications?
Yes, SMB10J12AHE3_B/H is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix "HE3". It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC standards. The SMB10J12AHE3_B/H is commonly deployed in engine control units, body electronics, and ADAS sensor modules where load-dump immunity and long-term reliability are critical.
What does the "_B/H" suffix mean in SMB10J12AHE3_B/H?
The "_B/H" suffix in SMB10J12AHE3_B/H indicates packaging configuration: "B" denotes tape-and-reel format per Vishay's internal revision coding, and "H" specifies 7-inch diameter plastic tape and reel with 750 units per reel. This matches the preferred package code "H" in Vishay's ordering information table and ensures compatibility with standard SMT pick-and-place equipment.
How does SMB10J12AHE3_B/H differ from bidirectional variants like SMB8J12CA?
SMB10J12AHE3_B/H is unidirectional with cathode band marking and 1000 W PPPM, whereas SMB8J12CA is bidirectional with symmetrical breakdown and 800 W PPPM. The SMB10J12AHE3_B/H supports DC-coupled protection on polarized rails (e.g., 12 V supply), while SMB8J12CA suits AC or floating signal lines. Their VBR and VC values are identical, but SMB10J12AHE3_B/H offers higher surge power and AEC-Q101 qualification.
What is the thermal resistance of SMB10J12AHE3_B/H, and how does it affect layout?
SMB10J12AHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °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 repeated surges, PCB layout must provide minimum pad dimensions matching Vishay's recommended mounting footprint and avoid excessive trace length between the SMB10J12AHE3_B/H and ground plane.
SMB10J12AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 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)
SMB10J12AHE3_B/H FAQ
1.How can I place an order for SMB10J12AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J12AHE3_B/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_B/H reliable?
The price and inventory of SMB10J12AHE3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for SMB10J12AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J12AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J12AHE3_B/H?
SMB10J12AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J12AHE3_B/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_B/H?
For technical support, including SMB10J12AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J12AHE3_B/H requirements.
6.How does Aetrix verify that SMB10J12AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB10J12AHE3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of SMB10J12AHE3_B/H?
All SMB10J12AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J12AHE3_B/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_B/H part is unused and in its original packaging.
Return procedure for SMB10J12AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J12AHE3_B/H Tags
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