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Vishay General Semiconductor - Diodes Division SMB10J14AHE3/52
- Part No.:
- SMB10J14AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J14AHE3/52.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB10J14AHE3/52 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, 1000 W peak pulse power (10/1000 µs), 43.1 A peak pulse current (IPPM), and clamps transients to ≤23.2 V. It is AEC-Q101 qualified and used in automotive sensor interface protection.
For engineers reviewing the SMB10J14AHE3/52 datasheet, SMB10J14AHE3/52 pinout, SMB10J14AHE3/52 application, or SMB10J14AHE3/52 equivalent, key selection criteria include clamping voltage vs. protected IC's absolute maximum rating, VWM margin relative to operating rail, AEC-Q101 qualification status, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by overvoltage events exceeding its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), enabling suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
The SMB10J14AHE3/52 is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and operates across -55 °C to +150 °C junction temperature. Its MSL Level 1 rating and matte tin-plated leads support lead-free reflow up to 260 °C peak per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse working voltage; must exceed system nominal rail (e.g., 12 V automotive) with safety margin. |
| VBR min/max | 15.6 V / 17.2 V at IT = 1 mA - Confirmed breakdown range ensures reliable triggering without premature conduction. |
| VC @ IPPM | ≤23.2 V - Clamping voltage under 43.1 A surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 1000 W (10/1000 µs) - Peak surge energy handling capacity; defines protection level against ISO 7637-2 Pulse 1/2/5a. |
| ID @ VWM | ≤1.0 µA - Low leakage preserves battery life in always-on automotive modules and avoids false triggers. |
| TJ max | +150 °C - Enables use in under-hood environments; requires thermal pad layout per Vishay recommended 0.2" × 0.2" copper area. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected circuit anode connection point | Connected to positive rail or signal line; reverse-biased during normal operation; conducts during overvoltage to clamp to VC. |
| Anode | Reference/ground return path | Connected to system ground or low-impedance return plane; completes clamping path; must minimize inductance for effective surge diversion. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensors requiring long-term reliability under thermal cycling and humidity. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over lifetime and temperature; eliminates risk of junction corrosion in humid environments. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 6.0 V) and higher energy absorption efficiency compared to polymer-based TVS devices. |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning during assembly. |
| Unidirectional polarity | Optimized for DC power rail protection where reverse conduction is not required; provides lower clamping than bidirectional variants at same VWM. |
Applications
| Automotive Sensor Interface | 12 V Power Rail Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) in vehicle cabin modules from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Voltage-clamping transient suppressor placed directly at connector entry or IC input pins. Use Value: Limits transient voltage to ≤23.2 V, ensuring protected transceivers remain within their 24 V absolute maximum rating while maintaining signal integrity. |
Use Scenario: Safeguarding 12 V supply inputs to infotainment head units and telematics control units against ISO 7637-2 Pulse 5a (load dump up to 60 V, 400 ms). IC Role / Device Role / Timing Role: Primary overvoltage shunt device mounted upstream of DC-DC converters and LDOs. Use Value: Absorbs 1000 W surge energy without failure, preventing brownout or latch-up in downstream power management ICs. |
| Industrial PLC I/O Module | Consumer Appliance Motor Control |
Use Scenario: Shielding digital input channels (24 V DC) in programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Front-end transient guard on terminal block connections before optocoupler or Schmitt trigger input stages. Use Value: Fast <1 ns response captures sub-microsecond spikes; low ID (<1 µA) avoids loading of high-impedance sensing circuits. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in washing machine motor inverters from commutation noise and ESD during service access. IC Role / Device Role / Timing Role: Secondary-level clamping device located near MCU pins after bulk MOV or fuse-stage protection. Use Value: Tight VC/VWM ratio (23.2 V / 14 V = 1.66) enables robust protection without compromising noise immunity margins. |
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-E3/52 | Same VWM (14 V), VBR (15.6–17.2 V), and PPPM (1000 W), but commercial-grade (not AEC-Q101 qualified); RθJA = 75 °C/W vs. 72 °C/W. | Lacks automotive qualification; suitable for industrial or consumer designs where AEC-Q101 is not mandated. | Select SMBJ14A-E3/52 when cost sensitivity outweighs automotive compliance requirements and thermal margin permits slightly higher RθJA. |
| SMB10J14CAHE3/52 | Bidirectional variant with identical VWM (14 V), VBR (15.6–17.2 V), and PPPM (800 W); clamps both polarities; VC = 23.2 V same as unidirectional. | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, USB D+/D−) where negative transients occur. | Choose SMB10J14CAHE3/52 only when bidirectional clamping is essential; note 20 % lower PPPM reduces surge margin vs. SMB10J14AHE3/52. |
Compared with SMBJ14A-E3/52, SMB10J14AHE3/52 adds AEC-Q101 qualification and marginally better thermal resistance-critical for under-hood deployment. Against SMB10J14CAHE3/52, it delivers 25 % higher peak pulse power for unidirectional DC rails, making it optimal for automotive power line protection where polarity is fixed.
Availability
SMB10J14AHE3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and consumer appliance designs requiring stable component supply, AEC-Q101 compliance, and high-reliability transient suppression.
Supply support for SMB10J14AHE3/52 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 high-reliability, high-power-density solutions.
The SMB10J series is engineered for automotive and industrial surge protection, delivering high-power transient suppression in compact SMB packages with AEC-Q101 validation and robust thermal performance.
FAQ
What is the clamping voltage of SMB10J14AHE3/52 under maximum surge conditions?
The SMB10J14AHE3/52 clamps to a maximum of 23.2 V when subjected to its rated peak pulse current of 43.1 A (10/1000 µs waveform). This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. Designers must verify that this clamping voltage remains below the absolute maximum rating of downstream components.
Is SMB10J14AHE3/52 suitable for protecting CAN bus lines?
No-SMB10J14AHE3/52 is unidirectional and optimized for DC power rail protection, not differential data lines. For CAN FD or classical CAN physical layer protection, a bidirectional TVS such as SMB10J14CAHE3/52 or a dedicated CAN-optimized array (e.g., SMA6J12A) is required to handle both positive and negative transients without disrupting common-mode signaling.
Does SMB10J14AHE3/52 require a heatsink in typical automotive applications?
No external heatsink is required for SMB10J14AHE3/52 in single-event surge scenarios, as its thermal design relies on PCB copper pads (0.2" × 0.2" per terminal) to dissipate energy. The typical junction-to-ambient thermal resistance is 72 °C/W; sustained repetitive surges may necessitate larger copper areas or derating per Figure 2 in the datasheet, but standard automotive transients fall within safe single-pulse limits.
How does the AEC-Q101 qualification of SMB10J14AHE3/52 impact its use in non-automotive designs?
The AEC-Q101 qualification of SMB10J14AHE3/52 confirms rigorous stress testing-including temperature cycling, unbiased HAST, and ESD-making it highly reliable even in demanding industrial or medical applications. While not mandatory outside automotive, this qualification provides assurance of long-term stability, reduced infant mortality, and superior robustness versus commercial-grade equivalents like SMBJ14A-E3/52.
What is the meaning of the "HE3" suffix in SMB10J14AHE3/52?
The "HE3" suffix in SMB10J14AHE3/52 indicates RoHS-compliant construction with AEC-Q101 qualification and matte tin plating per J-STD-002. The "H" denotes AEC-Q101 qualification, "E3" specifies RoHS-compliant materials (lead-free, halogen-free), and "/52" refers to the 7" tape-and-reel packaging format containing 750 units. This suffix distinguishes it from commercial variants (e.g., "E3") and halogen-free automotive versions ("HM3").
SMB10J14AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J14AHE3/52 FAQ
1.How can I place an order for SMB10J14AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J14AHE3/52 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 SMB10J14AHE3/52 reliable?
The price and inventory of SMB10J14AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J14AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J14AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J14AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J14AHE3/52?
SMB10J14AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J14AHE3/52 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 SMB10J14AHE3/52?
For technical support, including SMB10J14AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J14AHE3/52 requirements.
6.How does Aetrix verify that SMB10J14AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J14AHE3/52 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 SMB10J14AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J14AHE3/52?
All SMB10J14AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J14AHE3/52, 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 SMB10J14AHE3/52 part is unused and in its original packaging.
Return procedure for SMB10J14AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J14AHE3/52 Tags
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