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Taiwan Semiconductor Corporation SMCJ13CA
- Part No.:
- SMCJ13CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ13CA.pdf
- Description:
- TVS DIODE 13VWM 21.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,475
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Product details
Overview
SMCJ13CA from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 13V working stand-off voltage (VWM), 14.4–15.9V breakdown voltage (VBR), and 21.5V maximum clamping voltage (VC) at 73A peak pulse current-designed for automotive ESD and load-dump protection in power supply rails and CAN/LIN interfaces.
For engineers reviewing the SMCJ13CA datasheet, SMCJ13CA pinout, SMCJ13CA application, or SMCJ13CA equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, unidirectional vs. bidirectional configuration (CA suffix denotes bipolar), thermal derating above 25°C, and compatibility with automated SMT placement on high-reliability industrial PCBs.
Technical Context
The SMCJ13CA operates as a silicon avalanche diode with glass-passivated junction, delivering sub-1.0ps response time from 0 V to VBR min and reverse leakage <1 µA at 13V. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management.
Thermally, it features 10°C/W junction-to-case (RθJC) and 55°C/W junction-to-ambient (RθJA) resistance, supporting continuous operation up to TJ = +150°C. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for molded compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum DC or RMS voltage the device blocks continuously without conduction |
| VBR min/max | 14.4 V / 15.9 V @ IT = 1 mA - Ensures reliable avalanche initiation across manufacturing tolerance |
| VC @ IPPM | 21.5 V @ 73 A - Limits downstream circuit voltage during 10/1000 µs surge, protecting 24V system ICs |
| PPK | 1500 W - Peak pulse power handling per single 1 ms transient, compliant with ISO 7637-2 |
| IR @ VWM | <1 µA - Negligible standby leakage, critical for low-power always-on automotive modules |
| TJ max | +150 °C - Enables use in engine bay and under-hood applications with high ambient temperature |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (no polarity marking required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (negative polarity) | Connects to protected line; conducts during negative transients to ground or rail |
| Cathode | Transient current sink (positive polarity) | Connects to protected line; conducts during positive transients to ground or rail |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Single-device protection for AC-coupled or floating lines without external diode pairing |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect/load dump), and Pulse 3a/3b (capacitive coupling) |
| Glass-passivated junction | Enhanced reliability and stable VBR over temperature and lifetime vs. epoxy-passivated alternatives |
| Automated placement compatibility | DO-214AB footprint and matte tin-plated leads meet J-STD-002 solderability standards |
Applications
| Automotive Power Rail Protection | CAN/LIN Bus ESD Protection |
|---|---|
Use Scenario: 12V/24V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a/b) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device placed at power entry point before LDOs and microcontrollers. Use Value: Clamps transients to ≤21.5V, preventing damage to 28V-rated regulators and 5V logic supplies downstream. | Use Scenario: High-speed vehicle communication buses subject to ESD (IEC 61000-4-2) and coupled noise. IC Role / Device Role / Timing Role: Low-capacitance TVS placed differential-line-to-ground on CAN_H/CAN_L or LIN bus. Use Value: Sub-1ps response ensures clamping occurs before bus transceivers enter latch-up, preserving signal integrity. |
| Industrial Sensor Interface Protection | LED Driver Surge Suppression |
Use Scenario: 4–20mA analog sensor loops routed near motor drives or solenoids in factory automation. IC Role / Device Role / Timing Role: Bidirectional shunt protector across input terminals of signal conditioning amplifiers. Use Value: Symmetrical clamping prevents reverse-bias damage to op-amp inputs during inductive kickback events. | Use Scenario: Constant-current LED drivers in street lighting subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Secondary-level TVS across bulk capacitor or driver IC supply pins. Use Value: 1500W peak rating absorbs multi-kA induced surges without degradation, extending driver IC lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA (Bourns) | Same VWM/VBR/VC specs but 600W PPK rating; SMB package (smaller footprint, higher RθJA = 75°C/W) | Limited to lower-energy transients; unsuitable for full ISO 7637-2 Pulse 5a (load dump) | Select only when space-constrained and surge energy is confirmed ≤600W |
| P6SMB13CA (Littelfuse) | Identical electrical specs and DO-214AB package; RoHS/halogen-free compliance verified per IEC 61249-2-21 | Same functional role and board-level replacement; validated in automotive Tier-1 designs | Drop-in alternative with identical thermal and mechanical behavior |
Compared with SMCJ13CA, SMBJ13CA offers smaller size but reduced surge capacity, while P6SMB13CA delivers identical protection performance with broader qualification history in automotive production.
Availability
SMCJ13CA is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and LED driver surge suppression requiring stable component supply across extended temperature and lifecycle demands.
Supply support for SMCJ13CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.
The SMCJ series was developed specifically for high-energy transient suppression in harsh environments, targeting ISO 7637-2 compliance and AEC-Q101 stress testing readiness.
FAQ
What does the "CA" suffix indicate in SMCJ13CA?
The "CA" suffix in SMCJ13CA denotes a bidirectional configuration-meaning the device provides symmetrical transient suppression in both polarities without requiring external circuitry. Unlike unidirectional "A" variants (e.g., SMCJ13A), the SMCJ13CA has no cathode marking and functions identically for positive and negative voltage excursions, making it ideal for AC-coupled or floating signal lines such as CAN bus or sensor bridges.
What is the maximum clamping voltage of SMCJ13CA and under what test condition?
The maximum clamping voltage of SMCJ13CA is 21.5 V, measured at a peak pulse current (IPPM) of 73 A with a 10/1000 µs waveform per IEC 61000-4-5 and ISO 7637-2. This value is guaranteed across temperature and process variation, ensuring downstream 24V-rated ICs remain within safe operating limits during worst-case surge events.
Is SMCJ13CA compliant with automotive transient immunity standards?
Yes, SMCJ13CA is explicitly designed to meet ISO 7637-2 requirements for Pulses 1 (inductive switch-off), 2a/2b (battery disconnection and load dump), and 3a/3b (capacitive coupling). Its 1500W peak power rating, fast sub-1ps response, and bidirectional clamping make it suitable for front-end protection in automotive control units, body electronics, and infotainment systems.
How does the DO-214AB (SMC) package of SMCJ13CA compare thermally to SMA or SMB packages?
The DO-214AB (SMC) package of SMCJ13CA provides superior thermal performance versus SMA or SMB: its junction-to-case resistance is 10°C/W and junction-to-ambient is 55°C/W, enabling higher sustained power dissipation. In contrast, SMB packages like SMBJ13CA exhibit ~75°C/W RθJA, limiting usable surge energy in high-temperature environments-making SMCJ13CA preferred for under-hood or high-power industrial use.
Can SMCJ13CA be used in place of a unidirectional SMCJ13A in a DC power rail?
Yes, SMCJ13CA can replace SMCJ13A in DC power rails, but with important implications: its bidirectional structure conducts during both positive and negative transients, so it must be placed between rail and ground-not rail-to-rail. While it offers identical VWM and clamping performance for positive surges, its reverse conduction capability adds robustness against accidental reverse polarity or AC-coupled noise, without requiring layout changes.
SMCJ13CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 69.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ13CA FAQ
1.How can I place an order for SMCJ13CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ13CA 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 SMCJ13CA reliable?
The price and inventory of SMCJ13CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ13CA is usually 5 days.
3.What payment methods are accepted for SMCJ13CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ13CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ13CA?
SMCJ13CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ13CA 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 SMCJ13CA?
For technical support, including SMCJ13CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ13CA requirements.
6.How does Aetrix verify that SMCJ13CA is sourced from the original manufacturer or authorized distributors?
All SMCJ13CA 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 SMCJ13CA meets industry standards.
7.What is the process for return or replacement of SMCJ13CA?
All SMCJ13CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ13CA, 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 SMCJ13CA part is unused and in its original packaging.
Return procedure for SMCJ13CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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