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Vishay General Semiconductor - Diodes Division SMCJ14AHM3_A/I
- Part No.:
- SMCJ14AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14AHM3_A/I.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,675
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Product details
Overview
SMCJ14AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, featuring 14 V standoff voltage (VWM), 23.2 V clamping voltage (VC) at 64.7 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power rails.
For engineers reviewing the SMCJ14AHM3_A/I datasheet, SMCJ14AHM3_A/I pinout, SMCJ14AHM3_A/I application, or SMCJ14AHM3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), thermal resistance (RθJA = 75 °C/W), and junction temperature range (–55 °C to +150 °C).
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche breakdown when reverse voltage exceeds its 15.6–17.2 V breakdown range (VBR at 1 mA). Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of transient energy without affecting normal DC operation.
Designed for surface-mount assembly on standard PCB copper pads (8.0 mm × 8.0 mm per terminal), it meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements. The matte tin-plated leads ensure reliable solderability, and the glass-passivated junction enhances long-term stability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 15.6 V / 17.2 V at 1 mA - ensures predictable avalanche onset across production lot |
| VC @ IPPM | 23.2 V at 64.7 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 1500 W - peak transient power handling capability under standardized waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and battery life in standby circuits |
| TJ max | +150 °C - enables use in under-hood automotive environments and high-power industrial enclosures |
| RθJA | 75 °C/W - defines thermal derating needed for sustained power dissipation on standard PCB layout |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); weight: 0.211 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes clamping path during transient |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); marked by visible band; carries full surge current into ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental regulations and supports lead-free reflow profiles up to 260 °C peak |
| Low incremental surge resistance | Enables tighter clamping voltage margin and reduced overshoot during fast transients |
| Glass passivated junction | Improves long-term stability and reduces parameter drift under repeated surge exposure |
| MSL Level 1 rating | Allows unlimited floor life and direct placement without baking prior to reflow |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed control modules exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before they reach LDOs or microcontrollers. Use Value: Limits transient voltage to ≤23.2 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. | Use Scenario: Analog output lines (e.g., 4–20 mA current loop) from pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point to shunt ESD (IEC 61000-4-2 ±8 kV contact) and cable discharge events. Use Value: Sub-µA leakage avoids loading precision current sources; fast response prevents sensor ADC saturation or data corruption. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Protection |
Use Scenario: Input stage of buck converters powering FPGA or DSP subsystems in telecom infrastructure equipment. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of input filter capacitor and controller IC. Use Value: Absorbs 1500 W surge energy without degradation, maintaining stable 14 V input window during hot-swap or backfeed events. | Use Scenario: High-side gate drive supply rail (e.g., bootstrap node) in 3-phase BLDC inverters subject to shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Clamps transient overshoot on gate driver VDD to protect level-shifters and MOSFET gate oxides. Use Value: 23.2 V clamping ensures gate-source voltage stays within safe margin (e.g., < ±20 V) even during 64.7 A surge pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14AHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR/VC specs | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current inductive loads | Select when board space is constrained and surge threat level is limited to IEC 61000-4-4/5 |
| SMCJ14A-M3/57T | Same electrical specs and SMC package, but commercial-grade (non-AEC-Q101), standard RoHS (not halogen-free) | Not qualified for automotive under-hood use; acceptable for industrial control panels with controlled ambient | Choose for cost-sensitive non-automotive designs where HM3 environmental compliance is not required |
Compared with SMCJ14A-M3/57T and SMAJ14AHE3/A, the SMCJ14AHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and 1500 W surge capacity-making it the only option qualified for demanding automotive power rail protection without derating or secondary clamping stages.
Availability
SMCJ14AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, and telecom power supply designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMCJ14AHM3_A/I 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 SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where robustness and repeatable clamping behavior are critical.
FAQ
What is the clamping voltage of the SMCJ14AHM3_A/I under a 10/1000 µs surge?
The SMCJ14AHM3_A/I has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current of 64.7 A using the standard 10/1000 µs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads), and represents the upper limit of voltage seen by protected circuitry during worst-case transient events. The SMCJ14AHM3_A/I maintains this clamping performance across its qualified operating temperature range.
Is the SMCJ14AHM3_A/I suitable for automotive applications?
Yes, the SMCJ14AHM3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HM3" suffix, indicating halogen-free, RoHS-compliant, and automotive-grade construction. It meets requirements for under-hood and body-control module applications, including resistance to thermal cycling, mechanical vibration, and high-energy transients such as load dump (ISO 7637-2 Pulse 5a). The SMCJ14AHM3_A/I is validated for operation from –55 °C to +150 °C junction temperature.
How does the SMCJ14AHM3_A/I differ from the standard SMCJ14A-E3 version?
The SMCJ14AHM3_A/I differs from SMCJ14A-E3 in three key ways: it uses halogen-free molding compound (HM3 vs. E3), carries AEC-Q101 qualification (denoted by "H" prefix in ordering code), and ships in 13-inch tape-and-reel packaging (suffix "I"). Electrically and thermally, both share identical VWM (14 V), VBR (15.6–17.2 V), VC (23.2 V), and PPPM (1500 W) specifications. The SMCJ14AHM3_A/I is intended for automotive-tier-1 suppliers requiring full compliance documentation and extended reliability validation.
What is the maximum reverse leakage current of the SMCJ14AHM3_A/I at its standoff voltage?
The SMCJ14AHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its rated standoff voltage (VWM) of 14 V and tested at 25 °C. This ultra-low leakage ensures minimal power loss in always-on circuits and avoids interference with precision analog sensing paths. Leakage remains below 10 µA up to 125 °C ambient, supporting reliable operation in high-temperature industrial and automotive environments. The SMCJ14AHM3_A/I achieves this while maintaining full 1500 W surge capability.
Can the SMCJ14AHM3_A/I be used in bidirectional configurations?
No, the SMCJ14AHM3_A/I is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and presence of cathode band marking. Bidirectional variants-such as SMCJ14CA-have symmetric breakdown in both polarities and no polarity marking. Using the SMCJ14AHM3_A/I in reverse-biased AC or floating applications would result in forward conduction and potential failure. For bidirectional protection, select the SMCJ14CA-HM3 variant, which shares the same package, AEC-Q101 qualification, and halogen-free construction as the SMCJ14AHM3_A/I.
SMCJ14AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 64.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ14AHM3_A/I FAQ
1.How can I place an order for SMCJ14AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14AHM3_A/I 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 SMCJ14AHM3_A/I reliable?
The price and inventory of SMCJ14AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ14AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ14AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14AHM3_A/I?
SMCJ14AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14AHM3_A/I 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 SMCJ14AHM3_A/I?
For technical support, including SMCJ14AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14AHM3_A/I requirements.
6.How does Aetrix verify that SMCJ14AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ14AHM3_A/I 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 SMCJ14AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ14AHM3_A/I?
All SMCJ14AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14AHM3_A/I, 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 SMCJ14AHM3_A/I part is unused and in its original packaging.
Return procedure for SMCJ14AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14AHM3_A/I Tags
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