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Vishay General Semiconductor - Diodes Division SMCJ14CAHM3_A/H
- Part No.:
- SMCJ14CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ14CAHM3_A/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,404
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Product details
Overview
SMCJ14CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with a 10/1000 μs waveform. It features a standoff voltage of 14 V, breakdown voltage range of 15.6–17.2 V at 1 mA test current, and clamps to ≤23.2 V at 64.7 A peak surge current. It is used to protect sensitive signal lines and power rails in automotive sensor interfaces and industrial control I/O.
For engineers reviewing the SMCJ14CAHM3_A/H datasheet, SMCJ14CAHM3_A/H pinout, SMCJ14CAHM3_A/H application, or SMCJ14CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, 1500 W surge rating, low clamping voltage under rated IPPM, and halogen-free RoHS-compliant construction per HM3 suffix.
Technical Context
This device operates as a voltage-clamping protection element across two terminals, responding to transient overvoltages in either polarity. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable breakdown behavior under repetitive surge stress.
Designed for surface-mount assembly on standard PCB copper pads (8.0 mm × 8.0 mm per terminal), it meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - critical for automotive-grade reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 14 V - maximum continuous reverse operating voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 15.6–17.2 V at 1 mA - guaranteed conduction onset threshold for transient suppression |
| Clamping Voltage (VC) | ≤23.2 V at 64.7 A IPPM - limits downstream circuit voltage during full-rated surge event |
| Peak Pulse Power (PPPM) | 1500 W (10/1000 μs) - defines maximum transient energy absorption capability |
| Peak Pulse Current (IPPM) | 64.7 A - maximum surge current the device can safely divert without failure |
| Junction Temperature Range | −55 °C to +150 °C - supports operation in extended automotive and industrial ambient conditions |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 2-terminal configuration and no polarity marking for bidirectional use |
Pinout & Package
SMCJ14CAHM3_A/H uses a 2-terminal SMC (DO-214AB) package with no polarity marking - consistent with its bidirectional function. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Common transient path | Either terminal serves as anode or cathode depending on instantaneous polarity of surge - no fixed polarity required in layout |
| Case (body) | Non-electrical mechanical interface | Thermally conductive plastic body with UL 94 V-0 flammability rating; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control, ADAS sensors, and infotainment I/O |
| 1500 W peak pulse power | Supports robust protection against ISO 7637-2 pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge events |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes voltage overshoot during clamping - critical for protecting 15 V-tolerant ICs |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global automotive and industrial OEM programs |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., temperature, pressure) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector or IC input pins to shunt transients before they reach signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 12 V–15 V rail-sensitive transceivers and ADC front-ends during ISO 16750-2 load dump events. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected TVS across 24 V DC input terminals to clamp fast-rising transients induced by relay coil de-energization. Use Value: Maintains functional integrity of optocoupler-based isolation stages by limiting voltage excursions to <23.2 V during 1 kV/μs surges. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding RS-485 transceiver ports in base station equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level surge suppressor mounted at board edge before common-mode choke and transceiver IC. Use Value: Absorbs up to 1500 W of surge energy while holding line-to-line differential voltage below 23.2 V - preserving signal integrity and IC survival. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in smart washing machine motor inverters from back-EMF spikes. IC Role / Device Role / Timing Role: Clamp placed across half-bridge driver supply rails (e.g., 15 V bias) to suppress inductive kickback from BLDC motor windings. Use Value: Enables reliable operation under repeated 64.7 A surge pulses without degradation - validated per AEC-Q101 high-temp life testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14CAHE3_A/H | Lower PPPM (400 W), same VWM (14 V), SMA package (smaller footprint, lower thermal mass) | Suitable for space-constrained consumer electronics where 1500 W surge immunity is not required | Select when board area is limited and surge threat level is reduced (e.g., IEC 61000-4-2 ESD only) |
| SMCJ14AHE3_A/H | Unidirectional version; identical VWM, VBR, VC, and PPPM but requires correct polarity orientation | Applicable only where circuit topology enforces known DC bias direction (e.g., 12 V supply rail) | Choose only if system grounding and signal polarity guarantee unidirectional surge exposure - avoids misapplication risk of bidirectional variant |
Compared with SMCJ14CAHM3_A/H, SMAJ14CAHE3_A/H trades surge capacity for compactness, while SMCJ14AHE3_A/H removes polarity flexibility at no performance gain - making SMCJ14CAHM3_A/H the optimal choice for automotive and industrial bidirectional protection where AEC-Q101 and halogen-free compliance are mandatory.
Availability
SMCJ14CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and appliance motor control systems requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ14CAHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 qualification, and precise clamping performance are essential.
FAQ
What does the "CA" suffix indicate in SMCJ14CAHM3_A/H?
The "CA" suffix in SMCJ14CAHM3_A/H denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SMCJ14A), it has no cathode band marking and functions identically regardless of voltage polarity applied across its terminals, making it ideal for AC-coupled or floating signal paths.
Is SMCJ14CAHM3_A/H qualified for automotive use?
Yes, SMCJ14CAHM3_A/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix - indicating halogen-free, RoHS-compliant construction with full automotive reliability validation. It is rated for operation from −55 °C to +150 °C and meets MSL Level 1 handling requirements, supporting deployment in engine compartments, ADAS modules, and body control units.
What is the clamping voltage of SMCJ14CAHM3_A/H at its rated surge current?
The clamping voltage (VC) of SMCJ14CAHM3_A/H is guaranteed to be ≤23.2 V at its rated peak pulse current (IPPM) of 64.7 A, measured using a 10/1000 μs waveform. This value reflects worst-case device behavior under full-rated surge stress and ensures downstream components with 24 V absolute maximum ratings remain within safe operating limits.
How does the HM3 suffix differ from M3 or HE3 in Vishay's ordering nomenclature?
The HM3 suffix in SMCJ14CAHM3_A/H specifies halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. In contrast, M3 indicates halogen-free and RoHS-compliant but not automotive-qualified, while HE3 denotes RoHS-compliant and AEC-Q101 qualified but not halogen-free. HM3 uniquely combines all three attributes for stringent automotive supply chain requirements.
Can SMCJ14CAHM3_A/H replace SMCJ14AHE3_A/H in an existing design?
SMCJ14CAHM3_A/H can replace SMCJ14AHE3_A/H only if the circuit topology supports bidirectional clamping and polarity independence - for example, across differential signal pairs or floating supplies. It must not be substituted in unidirectionally biased rails without verifying that reverse conduction will not disrupt system operation, as SMCJ14AHE3_A/H is polarity-sensitive and lacks reverse conduction capability.
SMCJ14CAHM3_A/H 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ14CAHM3_A/H FAQ
1.How can I place an order for SMCJ14CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ14CAHM3_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 SMCJ14CAHM3_A/H reliable?
The price and inventory of SMCJ14CAHM3_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 SMCJ14CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ14CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ14CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ14CAHM3_A/H?
SMCJ14CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ14CAHM3_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 SMCJ14CAHM3_A/H?
For technical support, including SMCJ14CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ14CAHM3_A/H requirements.
6.How does Aetrix verify that SMCJ14CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ14CAHM3_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 SMCJ14CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ14CAHM3_A/H?
All SMCJ14CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ14CAHM3_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 SMCJ14CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ14CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ14CAHM3_A/H Tags
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