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Vishay General Semiconductor - Diodes Division SMCJ15CA-E3/57T
- Part No.:
- SMCJ15CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CA-E3/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,806
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Product details
Overview
SMCJ15CA-E3/57T 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 for protecting MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMCJ15CA-E3/57T datasheet, SMCJ15CA-E3/57T pinout, SMCJ15CA-E3/57T application, or SMCJ15CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, 15 V working voltage, RoHS-compliant matte tin terminations, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
The SMCJ15CA-E3/57T operates as a silicon avalanche diode with symmetrical bidirectional conduction, enabling protection against both positive and negative polarity transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive surge stress.
Designed for surface-mount PCB integration on 8.0 mm × 8.0 mm copper pads per terminal, it delivers thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), supporting operation from –55 °C to +150 °C junction temperature. It meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 16.7–18.5 V at 1 mA - Confirmed avalanche initiation threshold in both directions |
| Clamping Voltage (VC) | ≤24.4 V at 61.5 A - Peak voltage seen by protected circuit during 10/1000 µs transient |
| Peak Pulse Power (PPPM) | 1500 W - Surge energy handling capacity per single 10/1000 µs event |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint |
| Operating Temperature | –55 °C to +150 °C - Validated junction range for automotive and industrial ambient conditions |
| RoHS Compliance | E3 suffix - Lead-free, halogen-free, compliant with EU RoHS Directive 2011/65/EU |
Pinout & Package
SMCJ15CA-E3/57T uses the SMC (DO-214AB) package: a 2-terminal, non-polarized surface-mount case with no cathode marking (bidirectional). Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR |
| Case (body) | Thermal and mechanical interface | Plastic-molded body meets UL 94 V-0 flammability; provides mechanical mounting and thermal dissipation path |
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 rating | Supports robust immunity to IEC 61000-4-5 Level 4 (4 kV surge) when properly laid out |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| MSL Level 1 rating | Allows standard SMT reflow without baking or special handling prior to assembly |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring qualified TVS components |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and inductive switching transients in engine control modules. IC Role / Device Role / Timing Role: Primary clamping device placed at power entry point before DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤24.4 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional shunt protector across differential signal pair or supply rail. Use Value: Clamps sub-100 ns ESD pulses to safe levels while maintaining <1 µA leakage at 15 V, preserving signal integrity. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Front-end transient suppression on AC/DC input stage of base station line cards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS after gas discharge tube (GDT), providing fast-response clamping. Use Value: Responds in <1 ns to limit let-through voltage to downstream MOVs and bridge rectifiers, extending system lifetime. | Use Scenario: Input-side overvoltage protection in USB-C PD adapters where primary-side transients may exceed 100 V. IC Role / Device Role / Timing Role: Standoff-rated clamp on secondary-side DC bus before synchronous rectifier controller. Use Value: Maintains 15 V working margin while absorbing 1500 W surges-enabling compact layout without external heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA-E3/61T | Lower PPPM (400 W), same VWM (15 V), SMA package (smaller footprint, higher RθJA) | Not suitable for high-energy surges; limited to consumer-grade I/O protection | Select when board space is constrained and surge threat level is ≤IEC 61000-4-2 Level 3 |
| SMCJ15A-E3/57T | Unidirectional version; identical VWM, VBR, VC, and PPPM but polarized conduction | Requires correct orientation on PCB; unsuitable for AC or floating nodes | Choose only if circuit topology guarantees unidirectional transient polarity and layout allows cathode marking |
Compared with SMCJ15CA-E3/57T, SMAJ15CA-E3/61T trades surge capacity for size, while SMCJ15A-E3/57T sacrifices bidirectionality for identical clamping performance-making SMCJ15CA-E3/57T the optimal choice for polarity-agnostic, high-energy protection in space-tolerant designs.
Availability
SMCJ15CA-E3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom line card surge protection, and consumer power adapter input stage applications requiring stable component supply and full traceability.
Supply support for SMCJ15CA-E3/57T 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 harsh environments-targeting automotive, industrial, and telecom systems where robustness against load dump, ESD, and lightning-induced surges is mission-critical.
FAQ
What is the clamping voltage of SMCJ15CA-E3/57T at its rated peak pulse current?
The SMCJ15CA-E3/57T clamps to a maximum of 24.4 V when subjected to its rated peak pulse current of 61.5 A using a 10/1000 µs waveform. This value is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMCJ15CA-E3/57T suitable for automotive applications?
Yes, SMCJ15CA-E3/57T is compatible with automotive use. While the E3/57T variant itself is commercial-grade, the same SMCJ15CA family offers AEC-Q101 qualified versions under HE3 and HM3 suffixes. Its –55 °C to +150 °C operating range, MSL Level 1 reflow compatibility, and robust surge handling make SMCJ15CA-E3/57T a proven candidate for non-safety-critical automotive subsystems.
How does the bidirectional design of SMCJ15CA-E3/57T affect PCB layout?
The bidirectional design of SMCJ15CA-E3/57T eliminates polarity constraints: no cathode band marking is present, and either terminal may connect to any node in the protected circuit. This simplifies layout for AC-coupled lines, differential pairs, or floating grounds-reducing risk of misorientation and eliminating need for silkscreen polarity indicators on the PCB.
What is the maximum reverse leakage current of SMCJ15CA-E3/57T at its standoff voltage?
At its 15 V standoff voltage (VWM), the SMCJ15CA-E3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This low leakage preserves power efficiency in always-on circuits and avoids false triggering in high-impedance sensor interfaces, supporting reliable operation across its full temperature range.
Can SMCJ15CA-E3/57T be used in parallel for higher surge current handling?
No-SMCJ15CA-E3/57T is not recommended for parallel connection. Minor VBR tolerances (16.7–18.5 V) cause current sharing imbalance during surges, risking thermal runaway in one device. For higher energy handling, select a higher-rated part (e.g., SMCJ22CA) or implement staged protection with GDT + TVS rather than paralleling identical SMCJ15CA-E3/57T units.
SMCJ15CA-E3/57T 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 (SMCJ)
SMCJ15CA-E3/57T FAQ
1.How can I place an order for SMCJ15CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CA-E3/57T 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-E3/57T reliable?
The price and inventory of SMCJ15CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ15CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CA-E3/57T?
SMCJ15CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CA-E3/57T 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-E3/57T?
For technical support, including SMCJ15CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ15CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ15CA-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ15CA-E3/57T?
All SMCJ15CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CA-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ15CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15CA-E3/57T Tags
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