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STMicroelectronics SM15T200A
- Part No.:
- SM15T200A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T200A.pdf
- Description:
- TVS DIODE 171VWM 353VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,774
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Product details
Overview
SM15T200A from STMicroelectronics is a unidirectional 1500 W transient voltage suppression diode in SMC package, designed for IEC 61000-4-2 ESD (30 kV air/contact) and IEC 61000-4-4 surge (4 kV level 4) protection. It features 200 V standoff voltage (VRM), 274 V clamping voltage at 5.5 A (10/1000 µs), and 0.2 µA leakage at 25 °C - optimized for high-reliability DC power rail and telecom interface protection.
For engineers reviewing the SM15T200A datasheet, SM15T200A pinout, SM15T200A application, or SM15T200A equivalent, this device serves as a high-junction-temperature (150 °C), low-leakage TVS for industrial power supplies, base station front-ends, and automotive body control modules where stable clamping under thermal stress is critical.
Technical Context
The SM15T200A uses planar junction technology to achieve low dynamic resistance (5.11 Ω at 8/20 µs) and stable VBR (171–210 V) across temperature (αT = 10.8 × 10⁻⁴ /°C). Its unidirectional configuration enables asymmetric surge handling on positive DC rails without reverse conduction path.
It delivers 1250 W peak pulse power at Tj = 150 °C (10/1000 µs), maintaining clamping integrity under sustained thermal load. The SMC package supports 260 °C soldering and complies with IPC7531 footprint and JEDEC MO-136 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 200 V - maximum continuous reverse operating voltage before breakdown; defines protected circuit's DC rail rating. |
| Breakdown Voltage (VBR) | 171–210 V at 1 mA - ensures reliable triggering above nominal rail while avoiding false trips during transients. |
| Clamping Voltage (VCL) | 274 V at 5.5 A (10/1000 µs) - limits peak voltage seen by downstream ICs during surge events. |
| Peak Pulse Power (PPP) | 1500 W (10/1000 µs) - sustains energy dissipation without failure in standard lightning/surge tests. |
| Leakage Current (IRM) | 0.2 µA at 25 °C - minimizes standby power loss and avoids signal distortion in high-impedance sensing paths. |
| Junction Temperature Range | −55 to +150 °C - enables deployment in under-hood automotive or industrial ambient environments. |
| Dynamic Resistance (RD) | 5.11 Ω - determines voltage rise per amp of surge current; lower RD improves clamping linearity. |
Pinout & Package
SM15T200A is housed in an SMC (DO-214AB) surface-mount package with two terminals: Cathode (marked side) and Anode. The package measures 7.75–8.15 mm × 5.55–6.25 mm × 2.45 mm max height and features matte tin-plated leads compliant with J-STD-002 and RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Surge current sink node | Connected to protected line; conducts during overvoltage to shunt energy to ground. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature surge capability | 1250 W (10/1000 µs) at Tj = 150 °C - maintains protection margin in thermally constrained enclosures. |
| Low dynamic resistance | 5.11 Ω - reduces clamping voltage overshoot under fast-rising 8/20 µs surges. |
| Ultra-low leakage | 0.2 µA at 25 °C - preserves battery life and avoids loading of precision analog inputs. |
| IEC 61000-4-2 compliance | 30 kV contact/air discharge - exceeds Level 4 for robust ESD immunity in field-deployed equipment. |
| UL 497B certification | QVGQ2.E136224 - validates suitability for telecom and industrial signal line protection per safety standards. |
Applications
| Telecom Line Interface | Industrial DC Power Rail |
|---|---|
|
Use Scenario: Protection of RS-485 transceivers and DSL line drivers against induced surges and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS placed between data line and chassis ground to clamp common-mode transients. Use Value: 274 V clamping at 5.5 A prevents latch-up or damage to ±12 V tolerant transceivers during 4 kV IEC 61000-4-4 events. |
Use Scenario: Input-stage surge suppression for 24 V/48 V industrial PLC power supplies. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input bus upstream of DC-DC converters. Use Value: 1500 W peak power rating handles repetitive lightning-induced surges without degradation at 150 °C junction temperature. |
| Automotive Body Control Module | Base Station RF Front-End |
|
Use Scenario: Protection of LIN bus nodes and sensor supply lines in engine bay environments. IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V supply rail to suppress load dump and ISO 7637-2 pulses. Use Value: −55 to +150 °C operating range ensures functionality during thermal cycling; 0.2 µA leakage avoids battery drain. |
Use Scenario: Surge protection for antenna feedlines and bias injection points in cellular base station amplifiers. IC Role / Device Role / Timing Role: High-voltage TVS on DC bias line to prevent transient coupling into GaN PA stages. Use Value: 200 V VRM matches typical bias rail voltages; 5.11 Ω RD minimizes VCL rise during fast 8/20 µs RF amplifier turn-on transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ200A (Bourns) | Same 200 V VRM, but 600 W PPP (10/1000 µs); higher RD (7.5 Ω); SMC-compatible SMB package. | Limited to lower-energy surges; less suitable for repeated 4 kV IEC 61000-4-4 testing. | Select when cost sensitivity outweighs peak power requirement and board space allows SMB footprint. |
| 1.5KE200A (Littelfuse) | Through-hole DO-201 package; 1500 W PPP but only rated to 125 °C Tj; higher IRM (5 µA). | Not suitable for automated SMT assembly or high-temperature PCB layouts. | Choose only for legacy through-hole designs where rework tolerance and manual assembly are prioritized. |
Compared with SMBJ200A and 1.5KE200A, SM15T200A uniquely combines SMT compatibility, 150 °C junction rating, and sub-µA leakage-making it optimal for thermally dense, high-reliability DC power and telecom interfaces requiring long-term stability.
Availability
SM15T200A is available at Aetrix Electronics and suitable for industrial PLC power supplies, telecom line interfaces, automotive body control modules, and base station RF front-ends requiring stable component supply across extended temperature and surge stress conditions.
Supply support for SM15T200A 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, delivering silicon solutions for automotive, industrial, and power management applications.
SM15T200A belongs to ST's high-power TVS diode product line, engineered specifically for robust electrostatic and surge protection in harsh-environment DC systems where thermal resilience and low leakage are non-negotiable.
FAQ
What is the maximum clamping voltage of SM15T200A under a 10/1000 µs surge?
The SM15T200A clamps to 274 V at 5.5 A under a 10/1000 µs waveform, as specified in Table 2 of DS0683 Rev 8. This value is measured at Tamb = 25 °C and scales with junction temperature using αT = 10.8 × 10⁻⁴ /°C.
Is SM15T200A suitable for bidirectional signal line protection?
No - SM15T200A is unidirectional ('A' suffix) and conducts only in reverse bias. For bidirectional protection, use SM15T200CA, which provides symmetrical clamping for AC-coupled or differential lines like RS-485 or USB.
Does SM15T200A meet UL 497B requirements for telecom surge protection?
Yes - SM15T200A carries UL 497B file number QVGQ2.E136224, certifying its compliance with primary and secondary circuit protection requirements for telecommunications equipment per ANSI/UL 497B.
What is the recommended PCB footprint for SM15T200A?
The recommended footprint matches IPC7531 and JEDEC MO-136 standards: pad length 5.11 mm, pad width 3.14 mm, center-to-center spacing 8.19 mm, with 1.54 mm solder mask clearance per side - detailed in Figure 14 of DS0683 Rev 8.
SM15T200A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 171V
- Voltage - Breakdown (Min):
- 190V
- Voltage - Clamping (Max) @ Ipp:
- 353V
- Current - Peak Pulse (10/1000µs):
- 28A (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
SM15T200A FAQ
1.How can I place an order for SM15T200A through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T200A 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 SM15T200A reliable?
The price and inventory of SM15T200A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T200A is usually 5 days.
3.What payment methods are accepted for SM15T200A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T200A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T200A?
SM15T200A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T200A 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 SM15T200A?
For technical support, including SM15T200A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T200A requirements.
6.How does Aetrix verify that SM15T200A is sourced from the original manufacturer or authorized distributors?
All SM15T200A 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 SM15T200A meets industry standards.
7.What is the process for return or replacement of SM15T200A?
All SM15T200A units undergo pre-shipment inspection (PSI). If there is an issue with SM15T200A, 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 SM15T200A part is unused and in its original packaging.
Return procedure for SM15T200A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T200A Tags
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