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Vishay General Semiconductor - Diodes Division SMCJ15CA/57T
- Part No.:
- SMCJ15CA/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CA/57T.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,391
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Product details
Overview
SMCJ15CA/57T from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of sensitive electronics. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 61.5 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 µs waveform - deployed in automotive sensor signal lines, industrial I/O interfaces, and DC power rails.
For engineers reviewing the SMCJ15CA/57T datasheet, SMCJ15CA/57T pinout, SMCJ15CA/57T application, or SMCJ15CA/57T equivalent, key selection criteria include bi-directional clamping symmetry, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ15CA/57T operates as a silicon avalanche diode with glass-passivated junction, delivering symmetrical breakdown behavior in both polarities. Its bi-directional architecture ensures identical VBR min/max (16.7 V / 18.5 V at 1 mA) and clamping performance regardless of transient polarity, eliminating need for polarity-aware layout.
Thermal design relies on low RθJL (15 °C/W) and RθJA (75 °C/W), enabling reliable operation up to TJ = 150 °C. It meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and passes JESD201 Class 1A whisker testing when ordered with E3 suffix - confirmed by Vishay's HE3 variant designation for AEC-Q101 qualified parts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - guaranteed symmetric breakdown threshold in both directions |
| VC @ IPPM | 24.4 V at 61.5 A - clamping voltage limits downstream IC stress during 10/1000 µs transients |
| PPPM | 1500 W - peak surge power handling capability under standardized lightning/surge waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max. | +150 °C - enables use in under-hood automotive and high-ambient industrial environments |
| Package | DO-214AB (SMCJ) - surface-mount outline with 0.320" body length and J-bend leads for automated placement |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with matte tin-plated J-bend leads; no polarity marking for bi-directional devices; terminals solderable per J-STD-002 and JESD22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional avalanche junction | Identical clamping behavior in either polarity - no cathode band; device functions identically across both terminals |
| Lead 1 / Lead 2 | Current path terminals | Leads serve as bidirectional conduction paths; mounting on 8.0 mm × 8.0 mm copper pads required for rated PPPM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass-passivated junction | Enhances long-term stability and reduces parameter drift under thermal and humidity stress |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking |
| Low incremental surge resistance | Enables tighter clamping (24.4 V at 61.5 A) versus competing TVS diodes with similar PPPM |
| RoHS-compliant & halogen-free | Meets JEDEC JS709A and EU Directive 2011/65/EU requirements for hazardous substance restriction |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Symmetric 16.7–18.5 V breakdown and 24.4 V clamping ensure consistent protection against both positive and negative spikes without polarity concerns. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between field input line and ground to absorb 1500 W surges while maintaining <1 µA leakage at 15 V. Use Value: Enables direct integration into 24 V DC input stages without derating or additional series impedance due to low ID and stable VWM. |
| Telecom Power Rail Protection | Consumer USB Port ESD Suppression |
Use Scenario: Secondary overvoltage protection on +48 V telecom power distribution boards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS providing fast-response clamping (sub-nanosecond) to limit rail excursions during multi-kV transients. Use Value: 1500 W PPPM rating supports compliance with ITU-T K.20/21 immunity standards for central office equipment. | Use Scenario: Board-level ESD protection for USB 2.0 data lines and VBUS in portable audio/video devices. IC Role / Device Role / Timing Role: Bi-directional suppressor placed across differential pairs or supply-to-ground to meet IEC 61000-4-2 ±15 kV contact discharge requirement. Use Value: Low capacitance (typ. <100 pF at 0 V) prevents signal integrity degradation while delivering full-system ESD robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Lower PPPM (600 W), same VWM/VBR/VC, SMB package (smaller footprint, higher RθJA) | Not suitable for 1500 W surge events; limited to lower-energy transients in space-constrained designs | Select only if board area is critical and surge threat level is ≤600 W |
| 1.5KE15CA | Through-hole TO-218 package, same electrical specs, higher thermal mass but incompatible with SMT assembly | Requires manual or wave-solder process; unsuitable for fully automated production lines | Choose only for legacy through-hole systems or prototyping where rework tolerance is prioritized |
Compared with SMBJ15CA and 1.5KE15CA, the SMCJ15CA/57T uniquely balances 1500 W surge capability, AEC-Q101 qualification, and SMT-compatible DO-214AB packaging - making it optimal for high-reliability automotive and industrial surface-mount assemblies requiring validated automotive-grade robustness.
Availability
SMCJ15CA/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power distribution systems requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ15CA/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where AEC-Q101 validation and repeatable clamping performance are mandatory.
FAQ
What does the "CA" suffix indicate in SMCJ15CA/57T?
The "CA" suffix in SMCJ15CA/57T denotes a bi-directional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike uni-directional variants (e.g., SMCJ15A), the SMCJ15CA/57T has no cathode marking and delivers identical breakdown (16.7–18.5 V) and clamping (24.4 V) characteristics regardless of voltage polarity applied across its terminals.
Is SMCJ15CA/57T qualified for automotive applications?
Yes, SMCJ15CA/57T is AEC-Q101 qualified when ordered with the HE3 suffix (e.g., SMCJ15CAHE3/57T), confirming compliance with stress tests including temperature cycling, high-temperature reverse bias, and ESD. The base SMCJ15CA/57T part uses E3 suffix and meets commercial-grade reliability; automotive use requires explicit HE3 ordering per Vishay's documentation.
What is the maximum clamping voltage of SMCJ15CA/57T and under what conditions?
The maximum clamping voltage (VC) of SMCJ15CA/57T is 24.4 V, measured at a peak pulse current (IPPM) of 61.5 A using a 10/1000 µs standard surge waveform. This value is guaranteed across the full operating temperature range (−55 °C to +150 °C) and reflects worst-case clamping performance during high-energy transients.
Does SMCJ15CA/57T require special PCB layout considerations?
Yes - SMCJ15CA/57T must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve its rated 1500 W peak pulse power. Smaller pads cause thermal derating; traces should be short and wide to minimize inductance, and the device must be placed as close as possible to the protected interface to reduce impedance in the surge path.
What is the leakage current specification for SMCJ15CA/57T at its stand-off voltage?
The maximum reverse leakage current (ID) for SMCJ15CA/57T is 1.0 µA when biased at its rated stand-off voltage (VWM) of 15 V, measured at TA = 25 °C. This ultra-low leakage ensures minimal power loss in battery-powered or high-impedance sensing circuits, preserving accuracy and extending operational life.
SMCJ15CA/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:
- Obsolete
- 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/57T FAQ
1.How can I place an order for SMCJ15CA/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CA/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/57T reliable?
The price and inventory of SMCJ15CA/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/57T is usually 5 days.
3.What payment methods are accepted for SMCJ15CA/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CA/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CA/57T?
SMCJ15CA/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CA/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/57T?
For technical support, including SMCJ15CA/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CA/57T requirements.
6.How does Aetrix verify that SMCJ15CA/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ15CA/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/57T meets industry standards.
7.What is the process for return or replacement of SMCJ15CA/57T?
All SMCJ15CA/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CA/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/57T part is unused and in its original packaging.
Return procedure for SMCJ15CA/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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