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onsemi P6SMB160AT3
- Part No.:
- P6SMB160AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
P6SMB160AT3.pdf
- Description:
- TVS ZENER UNIDIR 600W 160V SMB
- Quantity:
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- Shipping:
Inventory:9,466
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Product details
Overview
P6SMB160AT3 from ON Semiconductor is a unidirectional 600 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of sensitive electronics. It features a 136 V working peak reverse voltage (VRWM), 160 V breakdown voltage (VBR) at 1 mA test current, and clamps transients to 219 V at 2.7 A peak pulse current (IPP), making it suitable for industrial power supply input stage surge protection.
For engineers reviewing the P6SMB160AT3 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system DC bus voltage, clamping voltage margin relative to protected IC absolute maximum ratings, UL 497B recognition for isolated loop compliance, and SMB package thermal performance in high-ambient environments.
Technical Context
The P6SMB160AT3 operates as a Zener-based avalanche diode with fast <1 ns response time and low dynamic impedance during transient events. Its unidirectional configuration provides reverse-biased clamping only, requiring correct polarity placement across DC rails or signal lines.
It delivers 600 W peak pulse power (10/1000 µs waveform) with thermal derating above 75°C junction temperature and supports forward surge current up to 100 A (8.3 ms half-sine). The device meets Class 3 ESD immunity (>16 kV HBM) and UL 497B certification for isolated loop circuit protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W @ 1 ms, 10/1000 µs waveform - defines maximum single-event surge energy handling capability |
| Working Peak Reverse Voltage (VRWM) | 136 V - maximum continuous DC or peak AC voltage the device blocks without clamping |
| Breakdown Voltage (VBR) | 160 V min @ IT = 1 mA - onset voltage where avalanche conduction begins under controlled DC test |
| Clamping Voltage (VC) | 219 V @ IPP = 2.7 A - maximum voltage seen by protected circuit during specified transient event |
| Leakage Current (IR) | <5 µA @ VRWM - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Response Time | <1 ns - enables suppression before downstream ICs experience damaging overvoltage |
| ESD Rating | Class 3 (>16 kV HBM) - qualifies for robust electrostatic discharge immunity in handling and operation |
Pinout & Package
Package: SMB (Case 403A), surface-mount, void-free thermosetting plastic with cathode band polarity marking. Dimensions: 3.56 mm × 4.32 mm × 2.13 mm (L × W × H); lead finish is solderable matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Current exit terminal during reverse clamping | Connected to higher-potential line (e.g., VIN, signal rail) to clamp transients toward ground |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Qualified for isolated loop circuit protection per Underwriters Laboratories, enabling use in telecom and industrial safety-critical interfaces |
| Pb-Free Construction | G-suffix indicates RoHS-compliant, lead-free SURMETIC® package compatible with standard reflow profiles (260°C/10 s max) |
| Low Clamping Ratio | VC/VBR = 219/160 ≈ 1.37 - tight voltage margin ensures effective protection without excessive overvoltage stress on downstream components |
| High Surge Robustness | Withstands 100 A forward surge (8.3 ms) and 2.7 A reverse peak pulse - supports repeated lightning-induced surges in outdoor equipment |
| Thermal Stability | RJL = 40 °C/W (junction-to-lead) - enables reliable power dissipation when mounted on copper pads per recommended footprint |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) CAN Bus Protection |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +24 V rail and chassis ground to clamp positive transients before they reach DC/DC converter ICs. Use Value: Clamps 136 V working voltage transients to ≤219 V, maintaining margin below 250 V absolute maximum rating of upstream rectifier and filter capacitors. |
Use Scenario: CAN_H and CAN_L lines in automotive BCM subjected to ESD and battery disconnect spikes per ISO 10605. IC Role / Device Role / Timing Role: One P6SMB160AT3 per line (anode to ground, cathode to signal) providing bidirectional-like protection via paired unidirectional devices. Use Value: Achieves >16 kV HBM ESD immunity and sub-1 ns response, preventing data corruption and transceiver latch-up during assembly and field operation. |
| Metering Equipment AC Mains Interface | Medical Imaging System HV Bias Supply Protection |
Use Scenario: Secondary-side rectified output of isolated AC/DC adapter in smart electricity meter, subject to surge coupling from primary side. IC Role / Device Role / Timing Role: TVS connected across DC output terminals to absorb coupled transients before reaching microcontroller and metrology IC power pins. Use Value: 136 V VRWM matches typical 120 VAC-derived ~170 VDC rail; 219 V VC ensures protected LDO regulators remain within 200 V absolute max rating. |
Use Scenario: High-voltage bias supply (±150 V) for X-ray detector front-end ASICs in portable imaging systems. IC Role / Device Role / Timing Role: P6SMB160AT3 installed across each polarity rail to ground, clamping fast-rising ESD events from cable handling or connector mating. Use Value: 2.7 A IPP rating handles multi-kV ESD discharges while maintaining <5 µA leakage to avoid bias current drift in precision analog front ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160A | Same VRWM (136 V), identical SMB package, but rated for 600 W with tighter VBR tolerance (160–171 V vs. P6SMB160AT3's 160–168 V) | Preferred in designs requiring tighter clamping consistency across production lots | Select SMBJ160A when statistical process control of clamping voltage is critical for safety-critical systems |
| 1.5SMC160A | Higher 1.5 kW peak power rating, larger SMC package (7.11 mm × 6.22 mm), same 136 V VRWM and 160 V VBR | Suitable where board space allows larger footprint and higher surge margin is required | Choose 1.5SMC160A for infrastructure equipment needing extended surge endurance beyond IEC 61000-4-5 Level 4 |
Compared with SMBJ160A and 1.5SMC160A, the P6SMB160AT3 offers optimal balance of compact SMB footprint, UL 497B certification, and proven reliability in cost-sensitive industrial power supplies-without sacrificing clamping performance or thermal robustness.
Availability
P6SMB160AT3 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control units, and medical instrumentation requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB160AT3 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 solutions for automotive, industrial, cloud, and medical markets.
The P6SMB160AT3 belongs to the P6SMBxxAT3 series of unidirectional TVS diodes engineered for high-energy transient suppression in harsh electromagnetic environments-particularly targeting UL 497B-compliant isolated interfaces and industrial-grade power conversion.
FAQ
What is the maximum clamping voltage of the P6SMB160AT3 under standard test conditions?
The P6SMB160AT3 has a maximum clamping voltage (VC) of 219 V when subjected to its rated peak pulse current (IPP) of 2.7 A using the 10/1000 µs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage the device allows across its terminals during a defined surge event, ensuring downstream components remain within safe operating limits. The P6SMB160AT3 maintains this clamping performance consistently across its qualified temperature range.
Does the P6SMB160AT3 meet UL 497B requirements for isolated loop protection?
Yes, the P6SMB160AT3 is UL Recognized under file E210057 for protector classification QVGQ2 per UL 497B. It has passed all required tests including Strike Voltage Breakdown, Endurance Conditioning, Temperature, Dielectric Withstand, and Discharge testing-making it suitable for use in telecom, industrial control, and medical isolated interfaces where regulatory compliance is mandatory. The P6SMB160AT3 carries this certification as part of the full P6SMBxxAT3 series.
What is the thermal resistance from junction to ambient for the P6SMB160AT3 in standard mounting conditions?
The P6SMB160AT3 has a thermal resistance from junction to ambient (RJA) of 226 °C/W when mounted on an FR-4 board using ON Semiconductor's minimum recommended footprint (Case 403A outline). This value assumes no additional copper pour and defines the worst-case thermal performance; actual RJA improves significantly with thermal vias and copper area. For thermal design, the P6SMB160AT3 must be evaluated with its 0.55 W DC power dissipation limit at 25°C ambient.
Can the P6SMB160AT3 be used in bidirectional transient protection applications?
No-the P6SMB160AT3 is strictly unidirectional and conducts only in reverse breakdown. For bidirectional protection, two P6SMB160AT3 devices must be connected in series opposition (anode-to-anode or cathode-to-cathode), or a dedicated bidirectional part such as P6SMB160CAT3 should be selected. Using a single P6SMB160AT3 for bidirectional threats leaves the forward polarity unprotected, risking damage during negative transients. The P6SMB160AT3 datasheet explicitly states bidirectional variants begin at P6SMB11CAT3.
What is the maximum allowable soldering temperature and duration for the P6SMB160AT3?
The P6SMB160AT3 supports a maximum soldering temperature of 260°C for 10 seconds at the case surface, per its mechanical specifications. This applies to both wave and reflow soldering processes and aligns with IPC-J-STD-020 moisture sensitivity level (MSL) requirements. The Pb-free "G" suffix version uses matte tin terminations compatible with standard lead-free reflow profiles. Exceeding 260°C or extending dwell time risks internal bond wire damage and parameter shift in the P6SMB160AT3.
P6SMB160AT3 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):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
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- Qualification:
- -
- Mounting Type:
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- Supplier Device Package:
- -
P6SMB160AT3 FAQ
1.How can I place an order for P6SMB160AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB160AT3 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 P6SMB160AT3 reliable?
The price and inventory of P6SMB160AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB160AT3 is usually 5 days.
3.What payment methods are accepted for P6SMB160AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB160AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB160AT3?
P6SMB160AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB160AT3 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 P6SMB160AT3?
For technical support, including P6SMB160AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB160AT3 requirements.
6.How does Aetrix verify that P6SMB160AT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB160AT3 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 P6SMB160AT3 meets industry standards.
7.What is the process for return or replacement of P6SMB160AT3?
All P6SMB160AT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB160AT3, 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 P6SMB160AT3 part is unused and in its original packaging.
Return procedure for P6SMB160AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB160AT3 Tags
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