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STMicroelectronics SMCJ13CA-TR
- Part No.:
- SMCJ13CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ13CA-TR.pdf
- Description:
- TVS DIODE 13VWM 27.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,353
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Product details
Overview
SMCJ13CA-TR from STMicroelectronics is a bidirectional 1500 W transient voltage suppression (TVS) diode in SMC package, designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a standoff voltage of 13 V, clamping voltage of 21.5 V at 73 A (10/1000 µs), low leakage current (0.2 µA at 25 °C), and operates up to +150 °C junction temperature - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the SMCJ13CA-TR datasheet, SMCJ13CA-TR pinout, SMCJ13CA-TR application, or SMCJ13CA-TR equivalent, key selection criteria include bidirectional clamping capability, 21.5 V max clamping at 73 A surge, thermal derating above 25 °C, and compatibility with IPC7531 footprint and JEDEC SMC outline - critical for robust overvoltage protection in high-reliability embedded systems.
Technical Context
This TVS diode uses planar silicon junction technology to achieve low dynamic resistance (0.076 Ω) and stable clamping performance across temperature. Its bidirectional configuration enables symmetrical surge suppression on AC-coupled or floating lines without polarity constraints.
The device complies with IEC 61000-4-2 (±30 kV contact/air discharge) and IEC 61000-4-4 Level 4 (4 kV), delivering reliable protection against fast transients while maintaining sub-1 µA leakage at rated VRM - essential for low-power sensor interfaces and always-on circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs); sustains full-rated surge energy without degradation at Tj ≤ 25 °C |
| Standoff Voltage (VRM) | 13 V; maximum continuous reverse operating voltage before breakdown begins |
| Breakdown Voltage (VBR) | 14.4–15.2 V at 1 mA; ensures predictable turn-on margin above nominal rail voltage |
| Clamping Voltage (VCL) | 21.5 V at 73 A (10/1000 µs); limits downstream voltage stress during surge events |
| Leakage Current (IRM) | 0.2 µA at 13 V and 25 °C; minimizes standby power loss in battery-backed systems |
| Junction Temperature Range | −55 to +150 °C; supports operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB); industry-standard surface-mount outline with 7.75–8.15 mm body length and 5.55–6.25 mm width |
Pinout & Package
SMCJ13CA-TR is a two-terminal bidirectional TVS diode in SMC (DO-214AB) package. The device has no polarity marking; both terminals are electrically symmetric and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | Conducts equally in both directions during overvoltage events; no DC bias dependency |
| Cathode/Anode (bidirectional) | Surge current return path | Completes low-impedance clamp loop across protected line; requires symmetric PCB routing |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or floating rails without external polarity management |
| Low dynamic resistance (RD) | 0.076 Ω ensures minimal voltage overshoot during high-current surges, improving system-level immunity |
| High-temperature operation | Rated for full 1500 W pulse power up to +150 °C junction temperature - validated per JESD22-A103 |
| IEC 61000-4-2 Level 4 compliance | Withstands ±30 kV contact and air discharge - exceeds industrial EMC requirements for front-panel interfaces |
| Matte tin lead finish | RoHS-compliant plating compatible with standard SnPb and lead-free reflow profiles per J-STD-020 MSL Level 1 |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit (BCU) |
|---|---|
Use Scenario: 24 V DC input channels exposed to load dump and inductive switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point, shunting surge energy to ground before reaching isolation amplifiers or microcontrollers. Use Value: Clamps 73 A surge to ≤21.5 V within nanoseconds, preventing latch-up or permanent damage to downstream analog front-end ICs. |
Use Scenario: LIN bus transceivers and window motor drivers subjected to ISO 7637-2 pulse 1/2a/5a in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across LIN signal pair and VBAT supply lines to suppress coupled transients without distorting signal integrity. Use Value: Maintains <0.2 µA leakage at 13 V, avoiding false wake-up in sleep-mode LIN nodes while surviving 4 kV IEC 61000-4-4 bursts. |
| Telecom PoE Injector Port | Medical Patient Monitor Sensor Interface |
Use Scenario: 48 V DC power feed to IEEE 802.3af/at endpoints, vulnerable to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary protection stage after primary gas discharge tube, limiting residual clamping voltage seen by PoE controller ICs. Use Value: Delivers 1500 W peak pulse handling with 21.5 V clamping - keeps PoE ICs within absolute maximum ratings during worst-case 10/1000 µs surges. |
Use Scenario: Analog front-end for ECG/SpO₂ sensors connected via unshielded cables prone to ESD events during clinical handling. IC Role / Device Role / Timing Role: First-line ESD suppressor on differential sensor inputs, placed immediately before instrumentation amplifier inputs. Use Value: Provides ±30 kV IEC 61000-4-2 protection with <1 nF junction capacitance at 13 V - preserves signal bandwidth and common-mode rejection ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA-TR | Lower peak power rating: 600 W (10/1000 µs); same VBR and VCL but higher RD (0.12 Ω) | Suitable only for lower-energy surge environments (e.g., consumer USB ports), not industrial 1500 W requirements | Select when space-constrained SMB footprint is mandatory and surge threat level is ≤600 W |
| 1.5KE13CA | Through-hole DO-201 package; identical electrical specs but larger footprint and manual assembly requirement | Used where automated SMT is unavailable or where mechanical robustness outweighs board density needs | Choose for legacy through-hole designs or high-vibration environments requiring axial lead retention |
Compared with SMBJ13CA-TR and 1.5KE13CA, SMCJ13CA-TR uniquely balances 1500 W surge capacity, SMC surface-mount compatibility, and bidirectional symmetry - making it optimal for modern high-density industrial and automotive PCBs requiring certified IEC 61000-4-2/4-4 immunity.
Availability
SMCJ13CA-TR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, telecom PoE injectors, and medical sensor interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ13CA-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 power management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.
The SMCJ series belongs to ST's high-power TVS diode product line, engineered specifically for robust transient suppression in harsh electromagnetic environments - targeting applications demanding certified IEC/ISO surge immunity and extended temperature operation.
FAQ
Is SMCJ13CA-TR unidirectional or bidirectional?
SMCJ13CA-TR is a bidirectional TVS diode, indicated by the "CA" suffix per ST's naming convention. It provides symmetrical clamping for both positive and negative transients, making it ideal for AC-coupled lines, differential buses like CAN or LIN, and floating power domains where polarity is undefined or reversible.
What is the maximum clamping voltage at 73 A surge current?
The maximum clamping voltage (VCL) for SMCJ13CA-TR is 21.5 V at 73 A for a 10/1000 µs waveform, measured at 25 °C ambient. This value increases with junction temperature due to the αT coefficient (10 × 10⁻⁴/°C), reaching approximately 22.9 V at 125 °C junction temperature.
Does this TVS diode require heatsinking for 1500 W pulse operation?
No dedicated heatsink is required for single-pulse 1500 W operation, as thermal mass of the SMC package and PCB copper area provide sufficient transient thermal dissipation. However, sustained repetitive surges demand careful PCB layout - ST recommends ≥3 cm² of 70 µm copper per lead to maintain Rth(j-a) ≤ 40 °C/W per Figure 12.
Can SMCJ13CA-TR replace SMCJ13A-TR in a design?
No - SMCJ13A-TR is unidirectional and only clamps positive transients relative to ground; substituting the bidirectional SMCJ13CA-TR may cause unintended conduction in DC-biased circuits. Reverse polarity protection or circuit topology must be verified before interchange, especially in grounded-rail applications.
SMCJ13CA-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ, 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:
- 27.2V
- Current - Peak Pulse (10/1000µs):
- 368A (8/20µs)
- 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:
- SMC
SMCJ13CA-TR FAQ
1.How can I place an order for SMCJ13CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ13CA-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 SMCJ13CA-TR reliable?
The price and inventory of SMCJ13CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ13CA-TR is usually 5 days.
3.What payment methods are accepted for SMCJ13CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ13CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ13CA-TR?
SMCJ13CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ13CA-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 SMCJ13CA-TR?
For technical support, including SMCJ13CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ13CA-TR requirements.
6.How does Aetrix verify that SMCJ13CA-TR is sourced from the original manufacturer or authorized distributors?
All SMCJ13CA-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 SMCJ13CA-TR meets industry standards.
7.What is the process for return or replacement of SMCJ13CA-TR?
All SMCJ13CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ13CA-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 SMCJ13CA-TR part is unused and in its original packaging.
Return procedure for SMCJ13CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ13CA-TR Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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