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STMicroelectronics SMA6J13CA-TR
- Part No.:
- SMA6J13CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J13CA-TR.pdf
- Description:
- TVS DIODE 13VWM 23.9VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:3,620
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Product details
Overview
SMA6J13CA-TR from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode designed for ESD and surge protection in low-voltage DC power rails and signal lines. It features a 13 V stand-off voltage (VRM), 20.4 V clamping voltage at 29 A (8/20 µs), 600 W peak pulse power (10/1000 µs), and operates up to 175 °C junction temperature-ideal for automotive body control modules and industrial I/O interfaces.
For engineers reviewing the SMA6J13CA-TR datasheet, SMA6J13CA-TR pinout, SMA6J13CA-TR application, or SMA6J13CA-TR equivalent, key selection criteria include bidirectional clamping behavior, low leakage (<1 µA at 85 °C), JEDEC DO-214AC (SMA) package compatibility, and IEC 61000-4-2 Level 4 (±30 kV contact/air) compliance.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown characteristics and low dynamic resistance (0.154 Ω at 25 °C), enabling precise voltage clamping during fast transients. Its bidirectional configuration protects AC-coupled or floating signal paths without polarity dependency.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and supports lead-free reflow per JEDEC standards, with a maximum soldering temperature of 260 °C for 10 s. Thermal impedance is optimized for FR4 PCBs with recommended copper land patterns per IPC-7531.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 13 V - Maximum continuous reverse working voltage before clamping begins |
| Breakdown Voltage (VBR) | 14.4–15.9 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction initiates |
| Clamping Voltage (VCL) | 20.4 V at 29 A (8/20 µs) - Peak voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - Sustained surge energy handling capability under standard long-pulse test |
| Leakage Current (IRM) | 0.2 µA at 25 °C, 1 µA at 85 °C - Ensures minimal standby power loss in battery-powered systems |
| Junction Temperature Range | −55 °C to +175 °C - Supports operation in under-hood automotive and industrial environments |
| ESD Rating | ±30 kV contact & air discharge (IEC 61000-4-2 Level 4) - Exceeds industrial immunity requirements |
Pinout & Package
Package: DO-214AC (SMA), JEDEC registered outline, surface-mount, epoxy resin UL94 V0 compliant, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Common terminal for bidirectional clamping | Internally connected to both P-N junctions; symmetric structure enables equal clamping in either polarity |
| Anode (A) | Common terminal for bidirectional clamping | Paired with cathode to form back-to-back diode configuration; no polarity marking required on PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded sensor outputs without polarity concerns |
| Low dynamic resistance (RD) | 0.154 Ω at 25 °C - Minimizes voltage overshoot during high-current surges, improving system-level robustness |
| High-temperature reliability | Rated for 175 °C junction operation - Maintains clamping performance in engine bay or enclosed industrial enclosures |
| UL94 V0 resin housing | Self-extinguishing polymer prevents flame propagation in safety-critical applications such as EV charging interfaces |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - Eliminates bake requirements prior to assembly, reducing manufacturing cost |
Applications
| Automotive Body Control Module | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door module sensors from load dump and ESD events in 12 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional TVS placed across LIN line and ground to clamp transients within ±20.4 V window. Use Value: Prevents latch-up or damage to transceivers during ISO 7637-2 pulse 5a (load dump) and IEC 61000-4-2 ESD events. | Use Scenario: Shielding half-duplex RS-485 transceivers in factory automation PLCs from induced surges on long cable runs. IC Role / Device Role / Timing Role: Placed differentially between A/B lines and common-mode grounded shield to suppress common-mode transients. Use Value: Limits clamping voltage to <21 V, staying below RS-485 receiver absolute maximum ratings while passing 12 kV IEC 61000-4-4 surge tests. |
| Smart Meter Communication Port | Medical Patient Monitor Sensor Input |
Use Scenario: Securing optical or RF communication ports (e.g., PLC, Zigbee) in utility smart meters exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Connected between data line and chassis ground to shunt surge current away from isolation barrier components. Use Value: Withstands 4 kV IEC 61000-4-4 (Level 4) bursts while maintaining <1 µA leakage at elevated ambient temperatures. | Use Scenario: Safeguarding analog front-end inputs of patient-worn biosensors against ESD during clinical handling. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to limit transient voltage before signal conditioning amplifiers. Use Value: Delivers ±30 kV ESD protection without adding measurable capacitance (<100 pF at 1 V), preserving signal integrity for sub-mV biopotential measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J13CA from Vishay (SMAJ13CA-E3/54) | Identical VRM (13 V), slightly higher VCL (21.5 V @ 28.3 A), same DO-214AC package | Marginally lower surge current rating (28.3 A vs. 29 A) but identical IEC 61000-4-2 rating | Preferred where second-source qualification is required and 1.1 V higher clamping is acceptable |
| P6SMB13CA from ON Semiconductor | Same VRM and VCL specs, but rated for 600 W at 10/1000 µs and 4 kW at 8/20 µs - identical surge capability | JEDEC DO-214AA (SMB) package - larger footprint, higher thermal mass, not drop-in compatible | Select when board layout allows SMB footprint and higher thermal dissipation is needed for repetitive surge duty cycles |
Compared with SMA6J13CA-TR, the Vishay alternative offers direct package compatibility but trades 1.1 V higher clamping voltage, while the ON Semiconductor part delivers identical electrical performance at the cost of non-interchangeable SMB packaging-requiring PCB redesign.
Availability
SMA6J13CA-TR is available at Aetrix Electronics and suitable for automotive body electronics, industrial communication interfaces, smart metering systems, and medical sensor front-ends requiring stable component supply across extended temperature ranges and high-reliability surge immunity.
Supply support for SMA6J13CA-TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power discrete technologies with over 40 years of TVS innovation.
The SMA6J series belongs to ST's high-reliability transient protection portfolio, engineered specifically for demanding automotive and industrial applications where long-term stability under thermal stress and repeat surge exposure is critical.
FAQ
What is the difference between SMA6J13CA-TR and SMA6J13A-TR?
The "CA" suffix denotes a bidirectional TVS diode, meaning it clamps transients equally in both polarities-ideal for AC-coupled or floating signal lines. The "A" version is unidirectional, with anode-cathode asymmetry, suited only for DC rails referenced to ground. Their clamping voltages and surge ratings differ slightly due to internal junction design.
Can SMA6J13CA-TR be used in place of a 12 V zener diode for overvoltage protection?
No-it is not a regulation device. SMA6J13CA-TR operates as a crowbar-type protector: it remains high-impedance below 13 V, then avalanches sharply above ~14.4 V to shunt surge current. Unlike a zener, it does not regulate or maintain steady voltage; its purpose is transient suppression, not voltage reference or linear regulation.
Does this device require a heatsink for 600 W pulse handling?
No external heatsink is needed for single-event 600 W (10/1000 µs) pulses. The device relies on thermal mass and PCB copper area for transient heat dissipation. Per Figure 11 in DS5142, Zth(j-a) is ~30 °C/W for short pulses on a standard FR4 footprint-sufficient for one-shot events. Repetitive surges require thermal derating based on duty cycle and copper area.
Is the SMA6J13CA-TR RoHS and REACH compliant?
Yes-SMA6J13CA-TR carries STMicroelectronics' ECOPACK2 environmental compliance certification, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Lead finish is matte tin, and the molding compound is halogen-free and UL94 V0 rated, with full material declarations available upon request.
SMA6J13CA-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J, TRANSIL™
- 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:
- 23.9V
- Current - Peak Pulse (10/1000µs):
- 147A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J13CA-TR FAQ
1.How can I place an order for SMA6J13CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J13CA-TR 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 SMA6J13CA-TR reliable?
The price and inventory of SMA6J13CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J13CA-TR is usually 5 days.
3.What payment methods are accepted for SMA6J13CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J13CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J13CA-TR?
SMA6J13CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J13CA-TR 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 SMA6J13CA-TR?
For technical support, including SMA6J13CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J13CA-TR requirements.
6.How does Aetrix verify that SMA6J13CA-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J13CA-TR 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 SMA6J13CA-TR meets industry standards.
7.What is the process for return or replacement of SMA6J13CA-TR?
All SMA6J13CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J13CA-TR, 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 SMA6J13CA-TR part is unused and in its original packaging.
Return procedure for SMA6J13CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J13CA-TR Tags
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