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STMicroelectronics SMCJ5.0A-TR
- Part No.:
- SMCJ5.0A-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0A-TR.pdf
- Description:
- TVS DIODE 5VWM 13.4VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:22,938
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Product details
Overview
SMCJ5.0A-TR from STMicroelectronics is a unidirectional 5.0 V standoff transient voltage suppression (TVS) diode in SMC package, rated for 1500 W peak pulse power (10/1000 µs), 9.2 V clamping voltage at 171 A surge current, and 0.2 µA max leakage at 25 °C. It protects DC power rails and low-voltage I/O interfaces in industrial power supplies and automotive ECUs against IEC 61000-4-2 ESD (±30 kV contact/air) and IEC 61000-4-4 EFT (4 kV).
For engineers reviewing the SMCJ5.0A-TR datasheet, SMCJ5.0A-TR pinout, SMCJ5.0A-TR application, or SMCJ5.0A-TR equivalent, this device is selected for high-reliability 5 V rail protection where low leakage, high junction temperature operation (up to +150 °C), and robust 8/20 µs surge handling (up to 10 kW) are required in space-constrained SMC footprint designs.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, triggering into avalanche conduction when reverse voltage exceeds its 5.0 V standoff rating (VRWM). Its planar silicon junction delivers stable breakdown behavior with ±10% VBR tolerance (6.4–6.74 V at 1 mA) and low dynamic resistance (0.012 Ω) to minimize clamping overshoot during fast transients.
Thermal performance is optimized for sustained operation: maximum junction temperature is +150 °C, and thermal impedance (Zth(j-a)) drops from ~100 °C/W (short pulses) to ~40 °C/W (steady-state) on standard FR4 PCB with recommended copper area, enabling reliable derating in high-ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 5.0 V - Maximum continuous reverse working voltage before clamping begins; sets minimum system operating margin for 5 V rails. |
| Breakdown Voltage (VBR) | 6.4–6.74 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on without premature conduction under normal bias. |
| Clamping Voltage (VCL) | 9.2 V at 171 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; defines safe overvoltage ceiling for downstream ICs. |
| Peak Pulse Power (PPP) | 1500 W (10/1000 µs), up to 10 kW (8/20 µs) - Surge energy-handling capacity; supports compliance with IEC 61000-4-4 Level 4 and MIL-STD-883 Class H. |
| Leakage Current (IR) | ≤0.2 µA at 25 °C - Ultra-low reverse leakage preserves battery life and signal integrity in always-on 5 V monitoring circuits. |
| Junction Temperature Range | −55 °C to +150 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor power electronics without thermal derating penalties. |
| Package | SMC (DO-214AB) - Standardized JEDEC outline (7.75–8.15 mm × 5.55–6.25 mm × 2.45 mm max); compatible with automated SMT assembly and IPC-7531 footprints. |
Pinout & Package
SMCJ5.0A-TR uses the industry-standard SMC (DO-214AB) surface-mount package with two terminals: Cathode (marked band) and Anode. The package features matte tin-plated leads compliant with J-STD-002 and RoHS, and is rated MSL Level 1 per J-STD-020 for unlimited floor life.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events; polarity-critical for unidirectional operation. |
| Anode | Reference/return path | Tied to system ground or lower-potential rail; completes clamping path; must maintain low-inductance connection to minimize VL overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | ±30 kV contact and air discharge - Eliminates need for external ESD filters in USB, CAN, and sensor interface ports. |
| Low dynamic resistance (RD) | 0.012 Ω - Reduces clamping voltage rise under high di/dt surges, improving protection margin for 5 V logic and microcontrollers. |
| High-temperature reliability | Rated for continuous operation at Tj = +150 °C - Supports placement near heat sources (e.g., MOSFETs, inductors) without derating loss. |
| UL94 V0 flammability rating | Epoxy body meets UL94 V0 - Ensures flame-retardant housing for safety-critical industrial and transportation equipment. |
| JEDEC-compliant SMC footprint | Standardized pad layout per IPC-7531 - Guarantees compatibility with existing reflow profiles and AOI inspection systems. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) I/O |
|---|---|
Use Scenario: 5 V auxiliary rail in DIN-rail mounted PLC power supply exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input filter capacitor and downstream LDO regulator. Use Value: Limits transient excursions to ≤9.2 V during 171 A surges, preventing LDO overvoltage failure and maintaining 5 V MCU operation during EMC testing. |
Use Scenario: LIN bus transceiver I/O pins in BCM subjected to ISO 16750-2 jump-start and battery reversal transients. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between LIN line and chassis ground to absorb coupled surges. Use Value: Clamps 8/20 µs spikes to <13.4 V within 1 ns, preserving transceiver integrity while meeting ISO 16750-2 pulse 5a requirements. |
| USB-C Port VBUS Line Protection | Smart Meter Microcontroller Reset Line |
Use Scenario: VBUS line of USB-C receptacle in industrial gateway, vulnerable to hot-plug ESD and cable-induced surges. IC Role / Device Role / Timing Role: Primary clamping device placed directly at connector, upstream of USB PD controller. Use Value: Withstands ±30 kV IEC 61000-4-2 discharges without degradation, ensuring VBUS remains within 5.5 V tolerance of USB spec during field use. |
Use Scenario: Active-low reset line of ARM Cortex-M4 in utility smart meter, exposed to EFT bursts during grid switching events. IC Role / Device Role / Timing Role: Low-leakage TVS shunting reset line to ground to suppress sub-100 ns transients. Use Value: 0.2 µA leakage prevents unintended reset assertion during long-term battery backup; 9.2 V clamping avoids false resets during 4 kV EFT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A-TR | Lower PPP (600 W vs. 1500 W), same VRWM/VCL, SMB package (smaller footprint, higher thermal resistance) | Acceptable for consumer-grade 5 V ports with lower surge exposure (e.g., non-industrial USB hubs) | Select when board space is critical and surge threat level is limited to IEC 61000-4-2 Level 2 only. |
| 1.5KE5.0A | Through-hole DO-201 package, identical electrical specs but higher mounting inductance and no MSL rating | Suitable for prototyping or legacy through-hole designs; not recommended for high-speed transient suppression | Choose only for manual assembly or repair scenarios where SMT infrastructure is unavailable. |
Compared with SMBJ5.0A-TR and 1.5KE5.0A, SMCJ5.0A-TR provides superior surge robustness (1500 W vs. 600 W/1500 W), lower thermal resistance via SMC copper pads, and full MSL Level 1 compliance-making it the preferred choice for production-grade industrial and automotive 5 V rail protection.
Availability
SMCJ5.0A-TR is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, USB-C VBUS protection, and smart meter reset line hardening requiring stable component supply and full IEC/ISO compliance.
Supply support for SMCJ5.0A-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, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
SMCJ series belongs to ST's high-power TVS portfolio engineered specifically for robust front-end surge protection in harsh-environment power electronics, emphasizing low leakage, high-temperature stability, and standardized SMT packaging.
FAQ
What is the maximum clamping voltage of SMCJ5.0A-TR under a 10/1000 µs surge?
The maximum clamping voltage is 9.2 V at 171 A peak pulse current for a 10/1000 µs waveform, measured at Tj = 25 °C. This value increases with junction temperature at a coefficient of 10⁻⁴/°C, reaching approximately 9.6 V at Tj = 125 °C per the VCL temperature coefficient (αT) specified in DS1284 Rev 11.
Can SMCJ5.0A-TR be used for bidirectional signal line protection?
No - SMCJ5.0A-TR is unidirectional and designed only for DC rail protection (e.g., 5 V to ground). For bidirectional lines like RS-485 or CAN, the SMCJ5.0CA-TR variant must be used, which features symmetrical breakdown in both polarities and is marked "FBA" per Table 6 of the datasheet.
What is the recommended PCB footprint for SMCJ5.0A-TR?
The recommended footprint follows IPC-7531 for SMC (DO-214AB): pad length 5.11 mm, pad width 1.54 mm, center-to-center spacing 8.19 mm, and copper area per lead ≥3.14 cm² to achieve optimal thermal dissipation. Figure 14 in DS1284 Rev 11 provides exact millimeter dimensions and tolerances.
Does SMCJ5.0A-TR meet automotive AEC-Q200 stress testing requirements?
No - SMCJ5.0A-TR is not AEC-Q200 qualified. While it operates up to +150 °C junction temperature and passes IEC 61000-4-2/4-4, ST does not list it in their AEC-Q200 stress-tested TVS portfolio. For automotive-grade qualification, consider ST's Automotive Qualified SMAJ5.0A or similar AEC-Q200 listed variants.
SMCJ5.0A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 746A (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
SMCJ5.0A-TR FAQ
1.How can I place an order for SMCJ5.0A-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0A-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 SMCJ5.0A-TR reliable?
The price and inventory of SMCJ5.0A-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ5.0A-TR is usually 5 days.
3.What payment methods are accepted for SMCJ5.0A-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0A-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0A-TR?
SMCJ5.0A-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0A-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 SMCJ5.0A-TR?
For technical support, including SMCJ5.0A-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0A-TR requirements.
6.How does Aetrix verify that SMCJ5.0A-TR is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0A-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 SMCJ5.0A-TR meets industry standards.
7.What is the process for return or replacement of SMCJ5.0A-TR?
All SMCJ5.0A-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0A-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 SMCJ5.0A-TR part is unused and in its original packaging.
Return procedure for SMCJ5.0A-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0A-TR Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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