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Taiwan Semiconductor Corporation SMBJ13CA
- Part No.:
- SMBJ13CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13CA.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:29,092
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Product details
Overview
SMBJ13CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in power rails and signal lines. It features a 13 V working stand-off voltage (VWM), 23.8 V maximum clamping voltage at 26 A peak pulse current, and 600 W peak pulse power rating with <1.0 ps response time. Used in automotive infotainment power inputs and industrial I/O protection circuits.
For engineers reviewing the SMBJ13CA datasheet, SMBJ13CA pinout, SMBJ13CA application, or SMBJ13CA equivalent, key selection criteria include bidirectional clamping capability, DO-214AA package compatibility, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low leakage (<1 µA @ 13 V), and thermal performance (RθJA = 55 °C/W).
Technical Context
The SMBJ13CA operates as a silicon avalanche diode with glass-passivated junction, enabling fast transient suppression without degradation under repetitive surges. Its bidirectional configuration allows symmetrical clamping in AC-coupled or floating systems, eliminating polarity concerns during layout.
It meets ISO 7637-2 immunity requirements for automotive electronics and supports steady-state power dissipation of 3 W at 25 °C ambient. Junction temperature range spans –55 °C to +150 °C, with moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 14.4 V / 17.6 V @ 1 mA - Breakdown threshold range defining turn-on consistency |
| VC @ IPP | 23.8 V @ 26 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 600 W - Peak pulse power handling for transient events per IEC 61000-4-5 |
| ID @ VWM | <1 µA - Low leakage ensures minimal standby power loss in battery-powered systems |
| RθJA | 55 °C/W - Thermal resistance from junction to ambient, critical for PCB copper area planning |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-banded case. Matte tin-plated leads, RoHS and halogen-free compliant. Weight: 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (cathode band side) | Reference terminal for bidirectional conduction | Marked end defines polarity reference; symmetric operation means either terminal serves as anode or cathode depending on transient polarity |
| Cathode (cathode band side) | Reference terminal for bidirectional conduction | Same physical terminal as Anode in bidirectional mode; band indicates terminal designation per JEDEC DO-214AA standard |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - Enables suppression before sensitive ICs experience overvoltage damage |
| ISO 7637-2 compliance | Pulse 1/2a/2b/3a/3b qualified - Validated for automotive load-dump and inductive-switching transients |
| Moisture sensitivity level | Level 1 (J-STD-020) - No bake requirement prior to reflow, simplifying SMT assembly |
| UL 94V-0 molding compound | Flame-retardant epoxy case - Meets safety standards for enclosed industrial equipment |
Applications
| Automotive Power Input Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery rail in vehicle infotainment head unit exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamping device placed upstream of DC-DC converter input. Use Value: Limits voltage to ≤23.8 V during 26 A ISO 7637-2 Pulse 5a events, preventing regulator latch-up or MOSFET breakdown. |
Use Scenario: 24 V analog sensor signal line in PLC I/O module subject to EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: Signal-line TVS shunting transients to ground before op-amp input stage. Use Value: Sub-1 ps response ensures clamping occurs within first 10 ns of EFT edge, preserving signal integrity. |
| LED Driver Overvoltage Protection | RS-485 Transceiver Bus Protection |
Use Scenario: Constant-current LED driver output subjected to inductive kickback from relay-controlled loads. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output terminals. Use Value: 600 W peak power rating absorbs 100 mJ pulses without degradation, extending driver lifetime. |
Use Scenario: RS-485 differential bus in factory automation network exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS on both A and B lines referenced to ground. Use Value: Symmetrical clamping maintains differential mode integrity while limiting common-mode voltage to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A (Uni-directional) | Unidirectional configuration; forward voltage drop (~3.5 V) applies only during positive surges | Requires correct polarity placement; unsuitable for AC or floating systems | Select when circuit topology guarantees unidirectional transient polarity and lower forward voltage is advantageous |
| SMCJ13CA | Higher PPK (1500 W); larger DO-214AB (SMC) package; RθJA = 35 °C/W | Occupies more PCB area; better thermal performance for sustained surge duty cycles | Choose for higher energy threats where board space permits and thermal margin is critical |
Compared with SMBJ13A, SMBJ13CA eliminates polarity dependency and simplifies layout; compared with SMCJ13CA, it trades peak power capacity for compact DO-214AA footprint-ideal for space-constrained automotive and industrial modules requiring certified 600 W surge immunity.
Availability
SMBJ13CA is available at Aetrix Electronics and suitable for automotive infotainment power inputs, industrial PLC I/O protection, and LED driver overvoltage safeguarding requiring stable component supply across production lifecycles.
Supply support for SMBJ13CA 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power devices since 1979.
The SMBJ series was developed specifically for AEC-Q200-compliant automotive and industrial surge protection, emphasizing robustness, repeatable clamping, and automated assembly compatibility in DO-214AA packaging.
FAQ
What is the clamping voltage of SMBJ13CA at its rated peak pulse current?
The SMBJ13CA has a maximum clamping voltage (VC) of 23.8 V at 26 A peak impulse current (IPP) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see no more than 23.8 V during standardized surge events. The SMBJ13CA's low clamping ratio (VC/VWM ≈ 1.83) reflects efficient avalanche energy absorption.
Is SMBJ13CA suitable for automotive applications requiring ISO 7637-2 compliance?
Yes, SMBJ13CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements as specified in Taiwan Semiconductor's official documentation. Its 600 W peak pulse power rating, fast <1.0 ps response, and –55 °C to +150 °C operating range make SMBJ13CA appropriate for 12 V and 24 V automotive subsystems including body control modules and infotainment power supplies.
How does the "CA" suffix in SMBJ13CA indicate device functionality?
The "CA" suffix in SMBJ13CA denotes a bidirectional configuration, meaning the device provides symmetrical clamping in both polarities-unlike "A"-suffixed unidirectional variants. This allows SMBJ13CA to protect AC-coupled, floating, or differential signal paths without regard to voltage polarity, simplifying design and reducing risk of incorrect orientation during assembly.
What is the maximum leakage current of SMBJ13CA at its working stand-off voltage?
SMBJ13CA exhibits a maximum blocking leakage current (ID) of 1 µA at its 13 V working stand-off voltage (VWM), measured at 25 °C ambient. This ultra-low leakage minimizes power loss in always-on systems and avoids false triggering in high-impedance sensing circuits. The SMBJ13CA maintains this specification across its full operating temperature range.
Does SMBJ13CA require special handling or baking before reflow soldering?
No, SMBJ13CA is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/85 % RH and placed directly into reflow without pre-baking. Its DO-214AA (SMB) package uses moisture-resistant molding compound, and Taiwan Semiconductor confirms no floor life limitations-streamlining high-volume SMT manufacturing for SMBJ13CA.
SMBJ13CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 28A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ13CA FAQ
1.How can I place an order for SMBJ13CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13CA 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 SMBJ13CA reliable?
The price and inventory of SMBJ13CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13CA is usually 5 days.
3.What payment methods are accepted for SMBJ13CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13CA?
SMBJ13CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13CA 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 SMBJ13CA?
For technical support, including SMBJ13CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13CA requirements.
6.How does Aetrix verify that SMBJ13CA is sourced from the original manufacturer or authorized distributors?
All SMBJ13CA 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 SMBJ13CA meets industry standards.
7.What is the process for return or replacement of SMBJ13CA?
All SMBJ13CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13CA, 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 SMBJ13CA part is unused and in its original packaging.
Return procedure for SMBJ13CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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