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Vishay General Semiconductor - Diodes Division SMCJ15CA-M3/9AT
- Part No.:
- SMCJ15CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CA-M3/9AT.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,655
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Product details
Overview
SMCJ15CA-M3/9AT 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 15 V, breakdown voltage range of 16.7–18.5 V at 1 mA test current, and clamps to ≤24.4 V at 61.5 A peak pulse current - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the SMCJ15CA-M3/9AT datasheet, SMCJ15CA-M3/9AT pinout, SMCJ15CA-M3/9AT application, or SMCJ15CA-M3/9AT equivalent, this page delivers verified electrical specs, thermal behavior, bidirectional clamping performance, JEDEC-compliant SMC package dimensions, and AEC-Q101-qualified alternatives - all critical for surge protection design validation and BOM selection.
Technical Context
The SMCJ15CA-M3/9AT operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive surge stress.
It meets MSL Level 1 per J-STD-020 with 260 °C peak reflow tolerance, uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and achieves 75 °C/W junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads - enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 15 V - maximum continuous reverse operating voltage before clamping initiates |
| Breakdown Voltage (VBR) | 16.7–18.5 V at 1 mA - guaranteed avalanche conduction onset range for bidirectional protection |
| Clamping Voltage (VC) | ≤24.4 V at 61.5 A IPPM - limits downstream circuit voltage during 10/1000 µs surge events |
| Peak Pulse Power (PPPM) | 1500 W - energy-handling capacity for transient suppression per IEC 61000-4-5 Level 4 compliance |
| Peak Pulse Current (IPPM) | 61.5 A - maximum non-repetitive surge current supported with 10/1000 µs waveform |
| Junction Temperature Range | −55 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMCJ15CA-M3/9AT uses the SMC (DO-214AB) package: a two-terminal, bidirectional device with no polarity marking. Terminals are matte tin-plated leads suitable for automated placement and lead-free reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - symmetrical conduction path |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal completing the bidirectional clamping loop - no functional distinction between terminals |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth, 2 kV line-line) in compact SMC package |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes voltage overshoot during transients - critical for protecting 16–18 V-rated logic and gate drivers |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance for automotive and industrial OEM supply chains without compromising surge robustness |
| MSL Level 1 rating | Allows unlimited floor life and direct placement into high-temperature reflow profiles up to 260 °C peak |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power input pins to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤24.4 V during 61.5 A transients, preventing latch-up or gate oxide damage in 3.3 V/5 V logic supplies. |
Use Scenario: Protecting analog outputs and CAN/LIN bus interfaces in engine temperature and pressure sensors. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting ESD and inductive spikes directly at connector entry points. Use Value: Clamps 8 kV contact ESD per IEC 61000-4-2 while maintaining signal integrity due to symmetrical bidirectional response. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding PoE-powered switches and base station RF front-end power inputs against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input rail, coordinated with upstream GDTs and downstream polymer PTCs. Use Value: Absorbs 1500 W transient energy without degradation, preserving system uptime in outdoor telecom enclosures. |
Use Scenario: Shielding microcontroller GPIOs and H-bridge gate drivers from back-EMF spikes generated by brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Fast-response TVS placed across motor coil terminals and driver supply rails. Use Value: Responds in <1 ps to clamp 100 V+ switching spikes, eliminating false resets and MOSFET avalanche failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA-E3/61T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher clamping voltage (24.4 V → 26.9 V at same IPPM) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is ≤1 kV line-earth |
| SMCJ15CAHM3_A/I | Identical electrical specs; AEC-Q101 qualified, halogen-free, 13" tape-and-reel (3500 pcs) | Qualified for automotive safety-critical systems requiring PPAP documentation and zero-defect traceability | Choose for Tier 1 automotive programs where qualification and lot traceability are mandatory |
Compared with SMCJ15CA-M3/9AT, SMAJ15CA-E3/61T trades surge capacity for footprint reduction, while SMCJ15CAHM3_A/I provides identical protection with full automotive qualification - making the original ideal for cost-sensitive industrial designs needing 1500 W capability without AEC-Q101 overhead.
Availability
SMCJ15CA-M3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply and consistent halogen-free RoHS compliance.
Supply support for SMCJ15CA-M3/9AT 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, thermal performance, and application-specific qualification.
The SMCJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge handling and AEC-Q101 readiness are essential design requirements.
FAQ
What is the clamping voltage of SMCJ15CA-M3/9AT at its rated peak pulse current?
The SMCJ15CA-M3/9AT clamps to a maximum of 24.4 V at its rated peak pulse current of 61.5 A with a 10/1000 µs waveform. This value is measured under standardized test conditions per JEDEC and ensures predictable overvoltage limiting for downstream 16–24 V tolerant circuits. The clamping voltage remains stable across temperature and lifetime when operated within derated power limits.
Is SMCJ15CA-M3/9AT suitable for automotive applications?
SMCJ15CA-M3/9AT is halogen-free and RoHS-compliant but not AEC-Q101 qualified. For non-safety-critical automotive subsystems like infotainment power rails or lighting modules, it provides robust 1500 W surge protection. However, for ADAS, powertrain, or body control units requiring formal qualification, the AEC-Q101 variant SMCJ15CAHM3_A/I must be selected instead of SMCJ15CA-M3/9AT.
How does the bidirectional configuration of SMCJ15CA-M3/9AT affect PCB layout?
The bidirectional nature of SMCJ15CA-M3/9AT eliminates polarity constraints - no cathode band marking exists, and either terminal may connect to either side of the protected line. This simplifies layout for AC-coupled interfaces, differential buses, or floating grounds, reducing routing complexity and eliminating orientation errors during automated assembly of SMCJ15CA-M3/9AT.
What is the thermal resistance of SMCJ15CA-M3/9AT, and how does it impact power dissipation?
SMCJ15CA-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. At ambient temperatures up to 85 °C, this allows continuous power dissipation up to ~6.5 W only if heatsinking is optimized; for transient suppression, thermal mass dominates, so RθJA governs recovery time between surges rather than steady-state limits.
Can SMCJ15CA-M3/9AT replace unidirectional SMCJ15A-M3/9AT in existing designs?
No - SMCJ15CA-M3/9AT is bidirectional and lacks polarity marking, while SMCJ15A-M3/9AT is unidirectional with a cathode band. Substituting them requires verifying that the protected circuit tolerates reverse conduction during negative transients. In DC-only rails with defined ground reference, unidirectional devices offer tighter leakage control; SMCJ15CA-M3/9AT should only replace SMCJ15A-M3/9AT after validating bidirectional clamping behavior in-system.
SMCJ15CA-M3/9AT 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ15CA-M3/9AT FAQ
1.How can I place an order for SMCJ15CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CA-M3/9AT 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 SMCJ15CA-M3/9AT reliable?
The price and inventory of SMCJ15CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ15CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CA-M3/9AT?
SMCJ15CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CA-M3/9AT 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 SMCJ15CA-M3/9AT?
For technical support, including SMCJ15CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ15CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ15CA-M3/9AT 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 SMCJ15CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ15CA-M3/9AT?
All SMCJ15CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CA-M3/9AT, 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 SMCJ15CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ15CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15CA-M3/9AT Tags
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