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STMicroelectronics SMCJ10A-TR
- Part No.:
- SMCJ10A-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ10A-TR.pdf
- Description:
- TVS DIODE 10VWM 21.7VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,265
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Product details
Overview
SMCJ10A-TR from STMicroelectronics is a unidirectional 1500 W transient voltage suppression (TVS) diode in SMC package, designed for primary-level ESD and surge protection on DC power rails and signal lines. It features a 10 V standoff voltage (VRM), 11.1 V minimum breakdown voltage (VBR), 17 V clamping voltage (VCL) at 92 A peak pulse current (IPP), and operates up to 150 °C junction temperature - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the SMCJ10A-TR datasheet, SMCJ10A-TR pinout, SMCJ10A-TR application, or SMCJ10A-TR equivalent, key selection criteria include clamping performance under 10/1000 µs surges, low leakage (<0.2 µA at 25 °C), thermal derating above 25 °C, and compatibility with IPC7531-compliant SMC footprints.
Technical Context
This TVS diode uses planar silicon junction technology optimized for high-reliability transient suppression in harsh environments. Its unidirectional configuration provides asymmetric clamping - forward conduction only during reverse overvoltage events - enabling precise rail-to-rail protection without affecting normal forward bias operation.
Thermal design is governed by junction-to-ambient thermal resistance (Rth(j-a)), which varies with copper area under leads (e.g., 45 °C/W at 1 cm², 25 °C/W at 4 cm²), and dynamic resistance (RD = 0.051 Ω) directly impacts clamping voltage rise under fast transients (8/20 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 10 V - maximum continuous reverse operating voltage before significant leakage begins |
| Breakdown Voltage (VBR min) | 11.1 V at 1 mA - guaranteed conduction onset under controlled DC test conditions |
| Clamping Voltage (VCL) | 17 V at 92 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power (PPP) | 1500 W (10/1000 µs) - energy-handling capability for standard lightning-surge waveforms |
| Leakage Current (IRM) | 0.2 µA at VRM and 25 °C - negligible standby power loss and minimal impact on high-impedance sensing nodes |
| Junction Temperature Range | –55 °C to +150 °C - supports operation in under-hood automotive and industrial motor drive environments |
| Dynamic Resistance (RD) | 0.051 Ω - determines VCL increase beyond nominal value as IPP rises above test condition |
Pinout & Package
The SMCJ10A-TR is housed in an SMC (DO-214AB) surface-mount package with two terminals: Cathode (K) and Anode (A). The package measures 5.55–6.25 mm in length (D), 7.75–8.15 mm in width (E), and 1.90–2.45 mm in height (A1), compliant with JEDEC MO-136AC and IPC7531 footprint standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current path terminal | Connected to ground or lower-potential rail; defines unidirectional conduction direction |
| Cathode (K) | Reverse-biased protection node | Connected to protected line (e.g., 12 V supply); conducts when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD robustness | 30 kV air/contact discharge - exceeds Level 4 for system-level immunity validation |
| High-temperature reliability | Rated for 150 °C Tj with 1250 W PPP derated at max temperature - enables compact heatsink-free designs |
| Low dynamic resistance | 0.051 Ω - minimizes clamping voltage overshoot during fast 8/20 µs transients |
| Matte tin lead finish | RoHS-compliant, whisker-resistant per JESD201 Class 2 - ensures long-term solder joint integrity |
| UL94 V0 flammability rating | Epoxy molding compound meets stringent fire safety requirements for enclosed industrial equipment |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controller (PLC) power stage exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary clamping device placed between input rail and ground, responding within nanoseconds to suppress transients >100 V. Use Value: Limits voltage excursion to ≤17 V during 92 A surges, preventing damage to downstream DC-DC controllers and microcontrollers. | Use Scenario: LIN bus line protection in door module electronics subject to ESD events during assembly and field service. IC Role / Device Role / Timing Role: Unidirectional shunt element tied between LIN line and chassis ground, conducting only during negative transients. Use Value: Withstands 30 kV contact discharge per IEC 61000-4-2 while adding <0.5 pF capacitance - no signal integrity degradation at 20 kbps LIN rates. |
| Telecom DC Feeding Interface | Renewable Energy Charge Controller |
Use Scenario: 48 V PoE-like DC feed line in remote base station radio unit, vulnerable to induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on input filter network, coordinated with MOV and gas discharge tube for multi-tier protection. Use Value: Handles 1500 W (10/1000 µs) surges without thermal runaway, maintaining stable clamping across –40 °C to +85 °C ambient. | Use Scenario: Battery-side input of solar charge controller connected to 12 V lead-acid battery bank prone to polarity reversal and jump-start spikes. IC Role / Device Role / Timing Role: Reverse-polarity and surge clamp on battery input, placed upstream of MOSFET switch and current sense amplifier. Use Value: Blocks reverse current with <0.2 µA leakage at 10 V, while clamping 100 V transients to 17 V - preserving ADC accuracy and gate driver integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A-TR | 600 W PPP rating (vs. 1500 W), same VRM/VBR but higher VCL (19.9 V @ 48 A) | Lower energy handling limits use to sub-50 A surges; unsuitable for load dump or lightning-prone locations | Select only where space constraints prevent SMC placement and surge threat level is low (e.g., internal board-level signals) |
| 1.5KE10A | Through-hole DO-201 package, 1500 W rating, but higher leakage (5 µA) and slower response due to larger junction capacitance | Not suitable for high-density SMT layouts; thermal performance inferior without large copper pads | Prefer for legacy through-hole designs or prototyping where rework tolerance outweighs size and leakage penalties |
Compared with SMBJ10A-TR and 1.5KE10A, SMCJ10A-TR delivers superior surge margin in compact SMT form, lower leakage for precision analog rails, and better thermal coupling to PCB copper - making it optimal for modern industrial and automotive power interface protection.
Availability
SMCJ10A-TR is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom DC feeding interfaces, and renewable energy charge controllers requiring stable component supply with full traceability and lifecycle support.
Supply support for SMCJ10A-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 portfolio, engineered specifically for robust front-end protection in systems exposed to IEC 61000-4-2/4-4/4-5 threats - emphasizing low leakage, high Tj operation, and planar junction stability.
FAQ
What is the maximum clamping voltage of SMCJ10A-TR under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 17 V at 92 A peak pulse current for a 10/1000 µs waveform, measured at 25 °C ambient. At elevated junction temperatures (e.g., 125 °C), VCL increases linearly per αT = 10 × 10⁻⁴ /°C, reaching ~18.7 V at Tj = 125 °C.
Can SMCJ10A-TR be used for bidirectional protection?
No - SMCJ10A-TR is unidirectional and conducts only during reverse-biased overvoltage events. For bidirectional protection, ST offers the SMCJ10CA-TR variant, which provides symmetrical clamping for AC-coupled or floating signal lines like RS-485 or USB D+/D–.
How does thermal derating affect its 1500 W rating?
The 1500 W peak pulse power rating applies only at Tj = 25 °C. As junction temperature rises, power capability decreases: at 100 °C Tj, it drops to ~1000 W; at 150 °C Tj, it is rated for 1250 W (10/1000 µs). Derating curves are provided in Figure 3 of DS1284 Rev 11.
Is SMCJ10A-TR compatible with lead-free reflow processes?
Yes - it is qualified for lead-free reflow per J-STD-020 MSL Level 1, with a peak profile of 240–245 °C for ≤60 seconds. The matte tin plating ensures reliable wetting and meets JESD22-B102 E3 solderability requirements without post-reflow cleaning.
SMCJ10A-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 21.7V
- Current - Peak Pulse (10/1000µs):
- 461A (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
SMCJ10A-TR FAQ
1.How can I place an order for SMCJ10A-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ10A-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 SMCJ10A-TR reliable?
The price and inventory of SMCJ10A-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ10A-TR is usually 5 days.
3.What payment methods are accepted for SMCJ10A-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ10A-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ10A-TR?
SMCJ10A-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ10A-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 SMCJ10A-TR?
For technical support, including SMCJ10A-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ10A-TR requirements.
6.How does Aetrix verify that SMCJ10A-TR is sourced from the original manufacturer or authorized distributors?
All SMCJ10A-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 SMCJ10A-TR meets industry standards.
7.What is the process for return or replacement of SMCJ10A-TR?
All SMCJ10A-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ10A-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 SMCJ10A-TR part is unused and in its original packaging.
Return procedure for SMCJ10A-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ10A-TR Tags
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