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Vishay General Semiconductor - Diodes Division SMB10J14AHE3_A/H
- Part No.:
- SMB10J14AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J14AHE3_A/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,450
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Product details
Overview
SMB10J14AHE3_A/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 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 engine control units to protect CAN transceivers from load dump and inductive switching transients.
For engineers reviewing the SMB10J14AHE3_A/H datasheet, SMB10J14AHE3_A/H pinout, SMB10J14AHE3_A/H application, or SMB10J14AHE3_A/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 per terminal.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector using an avalanche junction. Its glass-passivated pellet chip enables fast response time (<1 ns), low leakage (<1.0 µA at VWM), and stable clamping performance across -55 °C to +150 °C junction temperature range. The device meets MSL Level 1 per J-STD-020 and supports peak forward surge current up to 100 A (8.3 ms half-sine).
Designed for unidirectional DC line protection, SMB10J14AHE3_A/H exhibits symmetrical thermal resistance characteristics: RθJA = 72 °C/W (typ.) and RθJL = 20 °C/W (typ.), enabling effective heat dissipation when mounted on recommended pad layout. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 12 V automotive systems. |
| VBR (min/max) | 15.6 V / 17.2 V at IT = 1 mA - guaranteed avalanche onset window; ensures consistent triggering across production lots. |
| VC @ IPPM | 23.2 V at 43.1 A - clamped voltage during 10/1000 µs surge; limits downstream IC stress below 24 V absolute max ratings. |
| PPPM | 1000 W - peak pulse power handling capability; sustains ISO 7637-2 Pulse 5a (load dump) without failure. |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms); supports robust protection against alternator load dump events. |
| Junction Temp Range | -55 °C to +150 °C - qualified for under-hood automotive environments; enables use in ECU, body control modules, and ADAS sensors. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated leads compatible with lead-free reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during surge conduction | Connected to protected line (e.g., battery feed); conducts during reverse-biased avalanche clamp event. |
| Cathode | Reverse-biased terminal during normal operation | Marked with color band; tied to ground or lower-potential reference to enable clamping action on overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics - eliminates need for additional qualification testing in Tier-1 ECU designs. |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives; critical for under-hood reliability. |
| MSL Level 1 rating | Enables standard SMT reflow without baking; supports high-volume automated assembly with no special handling. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during surge events - protects 24 V-rated transceivers and microcontrollers more effectively than higher-ratio TVS devices. |
| 1000 W peak pulse power | Handles full ISO 7637-2 Pulse 5a (load dump) energy without degradation - suitable for 12 V/24 V dual-voltage vehicle platforms. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
|
Use Scenario: Protects 12 V supply rail of engine control unit against load dump transients (ISO 7637-2 Pulse 5a) and alternator switching spikes. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤23.2 V, preventing latch-up or damage to 28 V absolute max-rated buck controller ICs and MCU power domains. |
Use Scenario: Shields 24 V digital input channel of programmable logic controller from field-wiring induced surges (IEC 61000-4-5 Level 3). IC Role / Device Role / Timing Role: Primary front-end surge suppressor on optocoupler input side, upstream of series current-limiting resistor. Use Value: Clamps 4 kV/2 Ω combination wave to <24 V within nanoseconds, preserving signal integrity and avoiding false triggering of input latching circuits. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Interface |
|
Use Scenario: Safeguards LIN bus transceiver power pin against battery reversal and jump-start induced transients in door module applications. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VCC and GND of LIN transceiver IC, adjacent to bulk capacitor. Use Value: Withstands 100 A surge (8.3 ms) and maintains <1 µA leakage at 14 V - ensuring low quiescent current compliance and reliable wake-up functionality. |
Use Scenario: Guards primary-side DC input of telecom AC/DC adapter against lightning-induced surges on PoE-powered infrastructure equipment. IC Role / Device Role / Timing Role: Secondary-stage TVS after MOV-based front-end, providing precise clamping for sensitive rectifier and controller ICs. Use Value: Delivers 1000 W pulse handling with 23.2 V clamping - complements upstream MOV by limiting let-through voltage to safe levels for 30 V-rated bridge rectifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14AHE3/52 | Same VWM (14 V), identical SMB package, but rated for 600 W PPPM (vs. 1000 W); lower IPPM (28.2 A) and higher VC (25.1 V). | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy transients like ISO 16750-2. | Select SMB10J14AHE3_A/H when full load dump immunity is required; SMBJ14AHE3/52 suffices for less demanding 12 V sensor interfaces. |
| SMCJ14AHE3/52 | Same VWM and VBR, but larger SMC (DO-214AB) package; rated for 1500 W PPPM, 69.4 A IPPM, and 23.2 V VC. | Requires larger PCB footprint (7.11 mm × 6.22 mm); better thermal performance but incompatible with space-constrained SMB layouts. | Choose SMB10J14AHE3_A/H for space-limited automotive modules; SMCJ14AHE3/52 where board area permits and higher surge margin is needed. |
Compared with SMBJ14AHE3/52 and SMCJ14AHE3/52, SMB10J14AHE3_A/H uniquely balances 1000 W surge capability with SMB footprint and AEC-Q101 qualification - making it optimal for cost- and space-sensitive automotive ECUs requiring full load dump immunity without layout redesign.
Availability
SMB10J14AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power interface designs requiring stable component supply, AEC-Q101 compliance, and high-energy transient suppression.
Supply support for SMB10J14AHE3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
SMB10J14AHE3_A/H belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for automotive and industrial surge protection where AEC-Q101 validation, low clamping voltage, and high pulse power density are mandatory.
FAQ
What is the clamping voltage of SMB10J14AHE3_A/H at its rated peak pulse current?
The SMB10J14AHE3_A/H has a maximum clamping voltage (VC) of 23.2 V at 43.1 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 23.2 V during standardized surge events - critical for protecting 24 V-rated ICs in automotive applications. The SMB10J14AHE3_A/H datasheet specifies this parameter in Table 1 under "UNIDIRECTIONAL" electrical characteristics.
Is SMB10J14AHE3_A/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SMB10J14AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed in the Vishay document 88422 (Revision: 09-Jan-2024), section "FEATURES". The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified variants. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock - validating SMB10J14AHE3_A/H for use in engine control units, body control modules, and other under-hood automotive systems.
What is the standoff voltage (VWM) and why is it important for SMB10J14AHE3_A/H?
The standoff voltage (VWM) of SMB10J14AHE3_A/H is 14 V - the maximum DC or continuous reverse voltage the device can withstand without entering avalanche conduction. This parameter ensures reliable operation on nominal 12 V automotive systems, allowing margin above battery float voltage (typically ~13.8 V) while avoiding leakage or premature clamping. Exceeding VWM risks increased reverse leakage (>1.0 µA), so SMB10J14AHE3_A/H must be selected only where system operating voltage remains ≤14 V during all conditions.
Does SMB10J14AHE3_A/H have polarity markings, and how is it oriented on the PCB?
Yes, SMB10J14AHE3_A/H is unidirectional and features a visible cathode band (dark stripe) on the package body, denoting the cathode terminal. During PCB layout, the cathode must be connected to ground or the lower-potential reference node, while the anode connects to the line being protected. This orientation enables proper clamping action: when a positive transient exceeds VBR, current flows from anode to cathode, diverting surge energy to ground. Incorrect polarity renders SMB10J14AHE3_A/H ineffective for overvoltage protection.
What is the thermal resistance profile of SMB10J14AHE3_A/H, and how does it affect layout design?
SMB10J14AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on 5.0 mm × 5.0 mm copper pads per terminal. These values require adherence to Vishay's recommended mounting pad layout (Document 88422, page 5) to ensure safe operation at full 1000 W pulse rating. Reducing pad size or omitting thermal vias increases RθJA, risking junction overheating and premature failure - so SMB10J14AHE3_A/H layout must follow specified copper area guidelines.
SMB10J14AHE3_A/H 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):
- 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_A/H FAQ
1.How can I place an order for SMB10J14AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J14AHE3_A/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 SMB10J14AHE3_A/H reliable?
The price and inventory of SMB10J14AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J14AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB10J14AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J14AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J14AHE3_A/H?
SMB10J14AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J14AHE3_A/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 SMB10J14AHE3_A/H?
For technical support, including SMB10J14AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J14AHE3_A/H requirements.
6.How does Aetrix verify that SMB10J14AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB10J14AHE3_A/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 SMB10J14AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB10J14AHE3_A/H?
All SMB10J14AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J14AHE3_A/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 SMB10J14AHE3_A/H part is unused and in its original packaging.
Return procedure for SMB10J14AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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