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Vishay General Semiconductor - Diodes Division SMB10J14A-M3/52
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- Part No.:
- SMB10J14A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J14A-M3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,664
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Product details
Overview
SMB10J14A-M3/52 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 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR at 1 mA), 23.2 V clamping voltage (VC) at 43.1 A peak pulse current, and 1000 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB10J14A-M3/52 datasheet, SMB10J14A-M3/52 pinout, SMB10J14A-M3/52 application, or SMB10J14A-M3/52 equivalent, key selection criteria include clamping performance under 1000 W surges, AEC-Q101 qualification for automotive use, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM = 14 V, then avalanches rapidly above VBR (min 15.6 V) to divert transient energy. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while thermal resistance RθJA = 72 °C/W supports operation up to TJ = 150 °C.
The device meets ANSI/IEEE C62.35 standards for transient suppression and is rated for non-repetitive 100 A forward surge (IFSM, 8.3 ms half-sine), making it suitable for protecting MOSFET gates and microcontroller I/O against inductive switching spikes and ESD events in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 15.6 V / 17.2 V at 1 mA - precise avalanche threshold ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 23.2 V at 43.1 A - clamping voltage limits protected circuit stress during 1000 W transients |
| PPPM | 1000 W (10/1000 µs) - high-energy surge handling capability for automotive load-dump immunity |
| IFSM | 100 A (8.3 ms half-sine) - robustness against repetitive inrush or fault currents without degradation |
| TJ max | +150 °C - extended thermal range enables under-hood and industrial control cabinet deployment |
| Leakage ID | <1.0 µA at VWM - negligible standby power loss and no interference with low-current sensor signals |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak). Cathode indicated by black band on case end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; defines polarity for unidirectional clamping |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V supply or CAN_H); carries full transient current to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in engine control, ADAS sensors, and body modules |
| Glass-passivated junction | Stable VBR tolerance and low leakage over temperature and lifetime - critical for long-term reliability in sealed enclosures |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients - improves protection margin for 3.3 V/5 V logic interfaces |
| MSL Level 1 rating | Compatible with standard lead-free reflow profiles without pre-baking - reduces manufacturing complexity and cost |
| Matte tin-plated leads | Solderable per J-STD-002 and JESD22-B102 - ensures consistent wetting and joint integrity in high-volume SMT lines |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to ISO 7637-2 pulses and load dump. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between sensor VOUT and chassis ground to limit voltage excursions to ≤23.2 V. Use Value: Prevents op-amp saturation and ADC damage during 1000 W transients while maintaining <1 µA bias current at 14 V nominal supply. | Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers subjected to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input optocoupler terminals to clamp induced spikes before isolation barrier. Use Value: Enables reliable operation under IEC 61000-4-5 Level 3 (2 kV) surges without derating or parallel devices due to 1000 W rating. |
| DC Power Rail Protection | Motor Drive Gate Protection |
Use Scenario: Secondary overvoltage protection on 12 V/24 V board-level power distribution networks downstream of DC/DC converters. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing residual transients that bypass bulk capacitance and ferrite filters. Use Value: Clamps rail voltage to 23.2 V within nanoseconds, preventing latch-up or burnout in downstream PMICs and microcontrollers. | Use Scenario: Gate-source protection for N-channel MOSFETs in H-bridge motor drivers exposed to shoot-through or inductive kickback. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS tied between gate and source to clamp negative VGS spikes. Use Value: Limits VGS to safe levels (< ±20 V) without adding significant Miller capacitance - preserves switching speed and drive strength. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A-M3/52 | Same VWM/VBR/VC specs but lower PPPM = 600 W; identical SMB package and M3 halogen-free finish | Not suitable for ISO 7637-2 Pulse 5a (load dump) requiring ≥1000 W; limited to lower-energy ESD/lightning scenarios | Select SMB10J14A-M3/52 when 1000 W surge headroom is required; choose SMBJ14A-M3/52 only if system-level testing confirms 600 W sufficiency. |
| 1.5SMC14A-E3/52 | Same electrical ratings but in larger SMC (DO-214AB) package; higher RθJA = 15 °C/W; same M3 halogen-free RoHS compliance | Requires larger PCB footprint and may not fit space-constrained automotive modules; better thermal dissipation in open-air conditions | Prefer SMB10J14A-M3/52 for dense layouts and AEC-Q101-critical zones; use 1.5SMC14A-E3/52 where board area allows and junction temperature margin is primary concern. |
Compared with SMBJ14A-M3/52 and 1.5SMC14A-E3/52, SMB10J14A-M3/52 uniquely delivers 1000 W surge capability in the compact SMB footprint with AEC-Q101 validation - making it the optimal choice for space-limited, high-reliability automotive and industrial power rail protection where both energy rating and qualification status are mandatory.
Availability
SMB10J14A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, DC power rail protection, and motor drive gate circuits requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for SMB10J14A-M3/52 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMB10JxxA series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for automotive-grade transient suppression in demanding environments where AEC-Q101 validation, low clamping voltage, and compact SMB packaging are essential.
FAQ
What is the clamping voltage of SMB10J14A-M3/52 and how does it protect downstream components?
The SMB10J14A-M3/52 has a maximum clamping voltage (VC) of 23.2 V at 43.1 A peak pulse current (10/1000 µs waveform). This means that during a transient event, the device limits the voltage seen by downstream components - such as microcontrollers, sensors, or gate drivers - to no more than 23.2 V. Because its stand-off voltage is 14 V and breakdown begins at 15.6 V, the SMB10J14A-M3/52 provides a clear 9.2 V design margin between VWM and VC, ensuring robust protection without false triggering during normal operation.
Is SMB10J14A-M3/52 qualified for automotive applications?
Yes, SMB10J14A-M3/52 is AEC-Q101 qualified, as confirmed in Vishay document 88422 (Revision 09-Jan-2024). The "M3" suffix denotes halogen-free, RoHS-compliant construction, and the device meets all stress tests defined in AEC-Q101 for transient voltage suppressors - including high-temperature operating life, temperature cycling, and surge robustness. This makes SMB10J14A-M3/52 suitable for under-hood, body control, and ADAS sensor applications where automotive-grade reliability is mandatory.
What is the difference between SMB10J14A-M3/52 and SMBJ14A-M3/52?
SMB10J14A-M3/52 and SMBJ14A-M3/52 share identical VWM (14 V), VBR (15.6–17.2 V), and VC (23.2 V) ratings, but differ critically in peak pulse power: SMB10J14A-M3/52 is rated for 1000 W (10/1000 µs), whereas SMBJ14A-M3/52 is rated for 600 W. Both are unidirectional, SMB-packaged, and halogen-free (M3), but only SMB10J14A-M3/52 meets ISO 7637-2 load dump requirements. Thus, SMB10J14A-M3/52 is required where full 1000 W surge immunity is needed.
Does SMB10J14A-M3/52 have polarity marking, and how is it oriented on the PCB?
Yes, SMB10J14A-M3/52 is unidirectional and features a cathode band - a visible black stripe near one end of the SMB (DO-214AA) package. During PCB layout, the banded end must be connected to the line being protected (e.g., 12 V rail or signal trace), while the opposite (anode) end connects to ground. Reversing this orientation will prevent proper clamping action and may result in catastrophic failure during overvoltage events. The device's polarity is integral to its function and must be verified in assembly drawings and pick-and-place files.
What is the thermal resistance and maximum junction temperature of SMB10J14A-M3/52?
SMB10J14A-M3/52 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, and a maximum operating junction temperature (TJ) of +150 °C. This allows sustained operation in high-temperature environments such as automotive engine compartments or industrial control cabinets. Derating curves in the Vishay datasheet (Fig. 2) show that at 100 °C ambient, the device retains ~65 % of its 1000 W pulse rating - confirming its suitability for thermally demanding applications.
SMB10J14A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 43.1A
- 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 (SMBJ)
SMB10J14A-M3/52 FAQ
1.How can I place an order for SMB10J14A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J14A-M3/52 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 SMB10J14A-M3/52 reliable?
The price and inventory of SMB10J14A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J14A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J14A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J14A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J14A-M3/52?
SMB10J14A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J14A-M3/52 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 SMB10J14A-M3/52?
For technical support, including SMB10J14A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J14A-M3/52 requirements.
6.How does Aetrix verify that SMB10J14A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J14A-M3/52 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 SMB10J14A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J14A-M3/52?
All SMB10J14A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J14A-M3/52, 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 SMB10J14A-M3/52 part is unused and in its original packaging.
Return procedure for SMB10J14A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J14A-M3/52 Tags
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