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Vishay General Semiconductor - Diodes Division SMB10J12-E3/52
- Part No.:
- SMB10J12-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J12-E3/52.pdf
- Description:
- TVS DIODE 12VWM 22VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,976
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Product details
Overview
SMB10J12-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 12 V stand-off voltage (VWM), 19.9 V maximum clamping voltage (VC) at 50.3 A peak pulse current (IPPM), and 1000 W peak pulse power (10/1000 µs waveform), making it suitable for automotive power supply input protection and industrial sensor interface circuits.
For engineers reviewing the SMB10J12-E3/52 datasheet, SMB10J12-E3/52 pinout, SMB10J12-E3/52 application, or SMB10J12-E3/52 equivalent, key selection criteria include verified clamping performance under 10/1000 µs transients, AEC-Q101 qualification status, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 72 °C/W) for PCB layout derating.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown threshold (13.3–14.7 V at 1 mA), it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<5 µA at VWM) and low incremental surge resistance for consistent clamping.
Designed for surface-mount automated assembly, SMB10J12-E3/52 meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 1A whisker testing. Its DO-214AA package enables compact placement while maintaining 150 °C max junction temperature rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR min/max | 13.3 V / 14.7 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on across production lot. |
| VC @ IPPM | 19.9 V at 50.3 A - Clamped voltage during 10/1000 µs surge; determines protected IC's voltage stress limit. |
| PPPM | 1000 W - Peak pulse power handling (10/1000 µs); supports high-energy transients like ISO 7637-2 Pulse 1/2a. |
| IFSM | 100 A - Non-repetitive forward surge current (8.3 ms half-sine); validates robustness against inrush or fault currents. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance; guides copper pad sizing (0.2" × 0.2") for thermal derating above 25 °C. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: DO-214AA (SMB), molded plastic case meeting UL 94 V-0 flammability rating; cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; must handle full IPPM without trace fusing. |
| Cathode | Reverse-biased protection node | Connected to protected line (e.g., 12 V rail); color band identifies this terminal for correct orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile DO-214AA package | Enables high-density PCB layouts with 2.18 mm max height; compatible with standard SMT pick-and-place nozzles. |
| Glass-passivated junction | Ensures stable VBR tolerance and <5 µA leakage at VWM, critical for low-power sensor nodes. |
| 1000 W peak pulse power (10/1000 µs) | Withstands automotive load-dump surges (ISO 16750-2) without degradation when mounted on 5 mm × 5 mm copper pads. |
| AEC-Q101 qualification | Validates operation over -55 °C to +150 °C junction range with proven reliability for engine control and ADAS modules. |
| Matte tin plating (J-STD-002 compliant) | Guarantees solder wetting and intermetallic formation consistency across reflow profiles, reducing voiding risk. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: 12 V battery-fed ECUs exposed to ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump). IC Role / Device Role / Timing Role: Shunt clamping device placed between power rail and chassis ground to clamp transients below 20 V. Use Value: Limits voltage seen by MCU power pins to ≤19.9 V during 50.3 A surges, preventing latch-up or oxide damage. |
Use Scenario: 4–20 mA current-loop sensors in factory automation subject to ESD and cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; SMB10J12-E3/52 used unidirectionally on supply side of loop transmitter. Use Value: Maintains <5 µA leakage at 12 V nominal, avoiding offset errors in precision analog signal conditioning. |
| Telecom DC Power Feeds | Consumer Device USB Port Protection |
|
Use Scenario: Central office power distribution boards feeding remote DSLAMs with long cable runs susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on +12 V output stage of DC-DC converter module. Use Value: 1000 W rating handles multi-kA induced surges; RθJA = 72 °C/W allows thermal design with minimal copper area. |
Use Scenario: USB 2.0 host ports in smart TVs where hot-plug events generate >8 kV ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Secondary protection after dedicated ESD array; clamps residual overshoot on VBUS line. Use Value: 19.9 V clamping ensures USB PHY ICs (rated to 6 V abs max) remain undamaged during fast-rising transients. |
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 DO-214AA package, identical VWM/VC/PPPM, but not AEC-Q101 qualified. | Limited to commercial/industrial use; unsuitable for automotive OEM designs requiring AEC validation. | Select SMB10J12-E3/52 when automotive qualification or extended temperature operation is mandatory. |
| 1.5SMC12A | DO-214AB (SMC) package; larger footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm) and higher RθJA (50 °C/W). | Requires more PCB area and enhanced thermal relief; better suited for higher average power dissipation scenarios. | Choose SMB10J12-E3/52 for space-constrained automotive modules where DO-214AA size and AEC-Q101 are critical. |
Compared with SMBJ12A-E3/52, SMB10J12-E3/52 adds AEC-Q101 qualification without sacrificing electrical specs; versus 1.5SMC12A, it delivers identical protection in 40% less board area but requires tighter thermal management due to higher RθJA.
Availability
SMB10J12-E3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power systems, and consumer USB port protection requiring stable component supply across extended temperature ranges and high-reliability validation.
Supply support for SMB10J12-E3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and power efficiency.
SMB10J12-E3/52 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the maximum clamping voltage of SMB10J12-E3/52 under a 10/1000 µs surge?
The SMB10J12-E3/52 exhibits a maximum clamping voltage (VC) of 19.9 V when subjected to its rated peak pulse current of 50.3 A using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's Document Number 88422, ensuring predictable overvoltage limiting for protected circuitry. The SMB10J12-E3/52 maintains this clamping performance across its operational temperature range.
Is SMB10J12-E3/52 qualified for automotive applications?
Yes, SMB10J12-E3/52 is explicitly AEC-Q101 qualified, having passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge per JESD22-A114. This qualification confirms its suitability for automotive powertrain, body electronics, and ADAS modules where reliability under extreme thermal and electrical stress is mandatory. The SMB10J12-E3/52 data sheet (Rev. 12-Nov-12) documents full compliance.
What does the "E3/52" suffix indicate in SMB10J12-E3/52?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 1A whisker resistance. The "/52" specifies packaging in 7-inch diameter plastic tape and reel, with a base quantity of 750 units per reel. This configuration ensures compatibility with high-speed SMT assembly lines and traceable material handling. The SMB10J12-E3/52 ordering code is defined in Vishay's official documentation.
How does SMB10J12-E3/52 differ from bi-directional variants like SMB8J12CA?
SMB10J12-E3/52 is unidirectional, featuring a cathode band for polarity-sensitive placement on positive rails, whereas SMB8J12CA is bidirectional with no polarity marking and symmetric clamping for AC-coupled lines. The SMB10J12-E3/52 offers higher peak pulse power (1000 W vs. 800 W) and lower clamping voltage at equivalent current, making it preferred for DC power rail protection where polarity is fixed and energy levels are highest.
What PCB layout guidance applies to SMB10J12-E3/52 for optimal thermal performance?
Vishay specifies mounting SMB10J12-E3/52 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 1000 W pulse power and 72 °C/W thermal resistance. Minimizing trace length between the SMB10J12-E3/52 cathode and protected node, and connecting the anode directly to a solid ground plane, reduces inductance and improves clamping response. Thermal vias under pads further enhance heat dissipation in high-ambient environments.
SMB10J12-E3/52 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:
- 22V
- Current - Peak Pulse (10/1000µs):
- 45.5A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J12-E3/52 FAQ
1.How can I place an order for SMB10J12-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J12-E3/52 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 SMB10J12-E3/52 reliable?
The price and inventory of SMB10J12-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J12-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J12-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J12-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J12-E3/52?
SMB10J12-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J12-E3/52 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 SMB10J12-E3/52?
For technical support, including SMB10J12-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J12-E3/52 requirements.
6.How does Aetrix verify that SMB10J12-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J12-E3/52 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 SMB10J12-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J12-E3/52?
All SMB10J12-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J12-E3/52, 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 SMB10J12-E3/52 part is unused and in its original packaging.
Return procedure for SMB10J12-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J12-E3/52 Tags
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