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onsemi P6SMB200AT3
- Part No.:
- P6SMB200AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
P6SMB200AT3.pdf
- Description:
- TVS ZENER UNIDIR 600W 200V SMB
- Quantity:
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Inventory:2,551
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Product details
Overview
P6SMB200AT3 from ON Semiconductor is a unidirectional 600 W peak power TVS diode designed for transient overvoltage protection in DC power rails and signal lines. It features a 171 V working peak reverse voltage (VRWM), 200 V nominal Zener breakdown voltage (VBR) at 1 mA test current, clamping voltage of 274 V at 2.2 A peak pulse current, <5 µA leakage above VRWM, and sub-1 ns response time. It is widely deployed in industrial power supplies and automotive ECUs to suppress ESD and lightning-induced surges.
For engineers reviewing the P6SMB200AT3 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system operating voltage, VC margin relative to protected IC absolute maximum ratings, thermal derating at elevated ambient temperatures, and UL 497B certification for isolated loop protection compliance.
Technical Context
The P6SMB200AT3 operates as a unidirectional avalanche diode, conducting only during negative transients relative to its cathode. Its clamping behavior is defined by the 1 ms 10/1000 µs surge waveform, with peak pulse current (IPP) rated at 2.2 A and clamping voltage (VC) specified at 274 V - critical for ensuring downstream components remain below their absolute maximum voltage stress limits.
Thermal design relies on junction-to-lead resistance (RJL = 25 °C/W) and junction-to-ambient resistance (RJA = 226 °C/W) under standard FR-4 mounting. It is Pb-free, RoHS-compliant, AEC-Q101 qualified, and UL 497B recognized for isolated loop circuit protection - confirming suitability for safety-critical industrial and automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 171 V - maximum continuous reverse voltage before significant leakage; must exceed system DC bus or signal swing. |
| VBR @ IT=1 mA | 200 V (min) to 210 V (max) - precise Zener breakdown threshold defining turn-on onset under transient conditions. |
| VC @ IPP=2.2 A | 274 V - clamped voltage seen by protected circuit during full-rated 600 W surge; determines safe margin for downstream ICs. |
| IPP | 2.2 A - peak pulse current capability under 10/1000 µs waveform; defines surge energy handling (600 W @ 1 ms). |
| Leakage @ VRWM | <5 µA - minimal standby power loss and signal integrity impact in high-impedance circuits. |
| Response Time | <1 ns - enables suppression before fast transients (e.g., ESD) propagate into sensitive logic or analog sections. |
| ESD Rating | Class 3 (>16 kV HBM) - meets IEC 61000-4-2 Level 4 for robust board-level electrostatic discharge immunity. |
| UL Recognition | UL 497B QVGQ2 - certified for use in isolated communication loops and safety-isolated interfaces. |
Pinout & Package
Package: SMB (Case 403A), surface-mount, void-free thermosetting plastic with modified L-bend leads and cathode polarity band. Mounting position is unrestricted; max solder temperature is 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping event. |
| Cathode | Protected line connection | Connected to line being protected (e.g., 24 V rail); polarity band identifies this terminal for correct PCB placement. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 5a) without failure in industrial 24 V systems. |
| UL 497B recognition | Validated for use in telecom/data line isolation barriers and safety-critical loop-powered sensors. |
| AEC-Q101 qualification | Guarantees reliability under automotive temperature cycling (-65°C to +150°C) and mechanical stress. |
| Sub-1 ns response | Minimizes voltage overshoot before clamping engages, protecting fast CMOS and microcontroller I/O pins. |
| Pb-free & RoHS compliant | Meets global environmental regulations and supports lead-free reflow soldering profiles (JEDEC J-STD-020). |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching noise. IC Role / Device Role: Primary overvoltage clamp on main DC rail, placed upstream of DC-DC converters and supervisor ICs. Use Value: Limits transient excursions to ≤274 V, preserving 30 V-rated input capacitors and 36 V max-rated buck controllers. | Use Scenario: LIN bus line protection in door module ECU subjected to battery disconnect transients and ESD events. IC Role / Device Role: Unidirectional TVS on LIN signal line referenced to chassis ground. Use Value: Clamps LIN line to ≤274 V during 12 V battery dump, preventing damage to LIN transceiver's 40 V absolute max rating. |
| Medical Equipment Input Stage | Telecom Isolated Data Interface |
Use Scenario: AC/DC adapter input protection in portable ultrasound device where mains surges may couple into low-voltage DC outputs. IC Role / Device Role: Secondary-side TVS on 12 V auxiliary rail feeding FPGA and ADC power domains. Use Value: Maintains <5 µA leakage at 171 V VRWM, avoiding drift in precision analog front-end bias networks. | Use Scenario: RS-485 transceiver protection in building automation gateway with galvanically isolated data path. IC Role / Device Role: UL 497B-certified TVS on isolated side of RS-485 bus, referenced to isolated ground. Use Value: Meets UL 497B strike voltage and endurance requirements for safety-rated isolated communication interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ200A | Same VRWM (171 V), lower peak power (400 W), higher clamping voltage (291 V @ 1.7 A) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a compliance. | Select P6SMB200AT3 when 600 W surge rating and UL 497B certification are required. |
| 1.5SMC200A | Same VBR range, higher package thermal resistance (RJA = 250 °C/W), no UL 497B listing | Not approved for safety-isolated loop protection; requires additional validation for medical/industrial safety standards. | Choose P6SMB200AT3 for AEC-Q101, UL 497B, and tighter thermal performance in compact layouts. |
Compared with SMAJ200A and 1.5SMC200A, P6SMB200AT3 delivers higher surge robustness (600 W vs. 400 W/1500 W), lower clamping voltage (274 V vs. 291 V/287 V), and formal UL 497B recognition - making it the preferred choice for safety-critical, high-reliability 24–48 V industrial and automotive systems.
Availability
P6SMB200AT3 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, medical equipment input stages, and telecom isolated data interfaces requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB200AT3 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The P6SMB series belongs to ON Semiconductor's SURMETIC® TVS portfolio, engineered specifically for high-reliability transient suppression in harsh environments - emphasizing low clamping, fast response, and safety certifications like UL 497B and AEC-Q101.
FAQ
What is the maximum clamping voltage of P6SMB200AT3 under rated surge conditions?
The P6SMB200AT3 has a maximum clamping voltage (VC) of 274 V when subjected to its rated peak pulse current of 2.2 A using the standard 10/1000 µs waveform. This value is measured at TJ = 25°C and defines the upper voltage limit imposed on protected circuitry during a full 600 W transient event. Designers must ensure all downstream components have absolute maximum voltage ratings exceeding 274 V to guarantee safe operation.
Is P6SMB200AT3 suitable for automotive applications?
Yes, P6SMB200AT3 is AEC-Q101 qualified and PPAP capable, confirming its suitability for automotive applications including body control modules, infotainment power rails, and LIN/CAN bus protection. Its operating temperature range of −65°C to +150°C, robust surge capability, and low leakage support reliable performance in engine bay and cabin environments. The device also meets ISO 16750-2 electrical load dump requirements when properly integrated with series impedance.
Does P6SMB200AT3 have UL 497B certification?
Yes, P6SMB200AT3 is UL 497B recognized under file #E210057 for protector classification (QVGQ2). This certification validates its use in isolated loop circuits such as 4–20 mA current loops, RS-485 interfaces with galvanic isolation, and other safety-critical signal paths requiring verified transient suppression performance, dielectric withstand, and endurance under repeated surge stress.
What is the thermal resistance of P6SMB200AT3 and how does it affect layout?
P6SMB200AT3 has a junction-to-lead thermal resistance (RJL) of 25 °C/W and junction-to-ambient resistance (RJA) of 226 °C/W on standard FR-4 with ON Semiconductor's recommended footprint. To maintain reliability during repetitive surges, PCB layout must maximize copper area on anode and cathode pads, minimize trace length, and avoid thermal bottlenecks - especially since 600 W pulses generate localized heating that can degrade clamping consistency if heat is not efficiently conducted away via the leads.
How does the leakage current of P6SMB200AT3 impact high-impedance circuits?
P6SMB200AT3 exhibits ≤5 µA maximum reverse leakage current at its 171 V VRWM, measured at 25°C. In high-impedance circuits - such as precision voltage references, sensor bias networks, or battery-monitoring dividers - this low leakage prevents measurable offset errors or drift. However, leakage increases exponentially with temperature; at 125°C, it may reach ~100 µA, so thermal management remains essential in hot environments to preserve signal integrity.
P6SMB200AT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
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- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
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- Power Line Protection:
- -
- Applications:
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- Capacitance @ Frequency:
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- Operating Temperature:
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- Grade:
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- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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P6SMB200AT3 FAQ
1.How can I place an order for P6SMB200AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB200AT3 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 P6SMB200AT3 reliable?
The price and inventory of P6SMB200AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB200AT3 is usually 5 days.
3.What payment methods are accepted for P6SMB200AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB200AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB200AT3?
P6SMB200AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB200AT3 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 P6SMB200AT3?
For technical support, including P6SMB200AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB200AT3 requirements.
6.How does Aetrix verify that P6SMB200AT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB200AT3 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 P6SMB200AT3 meets industry standards.
7.What is the process for return or replacement of P6SMB200AT3?
All P6SMB200AT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB200AT3, 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 P6SMB200AT3 part is unused and in its original packaging.
Return procedure for P6SMB200AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB200AT3 Tags
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