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onsemi P6SMB150AT3
- Part No.:
- P6SMB150AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB150AT3.pdf
- Description:
- TVS DIODE 128VWM 207VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:3,410
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Product details
Overview
P6SMB150AT3 from ON Semiconductor is a unidirectional 600 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of sensitive electronics. It features a 128 V working peak reverse voltage (VRWM), 150 V breakdown voltage (VBR) at 1 mA test current, clamps transients to ≤207 V at 2.9 A peak pulse current, and delivers sub-1 ns response time - deployed in power supply input stages, industrial I/O interfaces, and automotive body control modules.
For engineers reviewing the P6SMB150AT3 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, surge current capability under IEC 61000-4-5 waveform, and UL 497B recognition for isolated loop circuit protection.
Technical Context
The P6SMB150AT3 operates as a Zener-based avalanche clamp, triggered when reverse voltage exceeds its 150 V nominal breakdown threshold. Its low zener impedance and fast <1 ns response enable effective suppression of ESD (≥16 kV HBM) and lightning-induced surges without latch-up or thermal runaway.
It is rated for 600 W peak pulse power (10/1000 µs waveform), with thermal derating above 75°C junction temperature and a maximum junction-to-lead thermal resistance of 40°C/W. The device exhibits ≤5 µA leakage at 128 V VRWM and 0.108%/°C temperature coefficient of VBR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 128 V - Maximum continuous reverse operating voltage before clamping begins; must exceed system DC rail or AC peak voltage. |
| VBR @ IT = 1 mA | 143–158 V - Breakdown voltage range defining turn-on threshold; ensures reliable triggering above normal operating voltage. |
| VC @ IPP = 2.9 A | 207 V - Clamping voltage during 10/1000 µs surge; determines maximum stress on downstream components. |
| PPK | 600 W - Peak pulse power handling per non-repetitive 1 ms surge; validates compliance with IEC 61000-4-5 Level 3/4. |
| IR @ VRWM | ≤5 µA - Reverse leakage current at rated VRWM; ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| Response Time | <1 ns - Time from surge onset to clamping activation; critical for protecting fast logic and communication interfaces. |
| ESD Rating | Class 3 (>16 kV) per HBM - Confirmed robustness against human-body model electrostatic discharge events. |
| UL Recognition | UL 497B QVGQ2 - Certified for use in isolated loop circuit protection, including telecom and industrial fieldbus systems. |
Pinout & Package
Package: SMB (Case 403A), surface-mount, unidirectional configuration with cathode indicated by polarity band. Dimensions: 4.06–4.60 mm width (E), 3.30–3.95 mm length (D), 1.90–2.45 mm height (A), lead-free (Pb−Free) compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-biased operation | Connected to system ground or low-side return path; defines current flow direction during clamping. |
| Cathode | High-voltage input terminal | Connected to protected line (e.g., DC input, signal trace); carries full surge current into ground via anode during transient event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) without degradation in standard PCB layouts. |
| UL 497B certification | Validates suitability for safety-critical isolated loop protection in medical equipment and industrial controllers. |
| Sub-1 ns response time | Minimizes voltage overshoot before clamping engages - essential for safeguarding 3.3 V/5 V logic and USB/RS-485 transceivers. |
| Low zener impedance | Ensures stable clamping voltage across varying surge currents, reducing risk of secondary overstress on protected ICs. |
| Pb−Free SURMETIC® package | RoHS-compliant thermoset plastic housing with corrosion-resistant leads and 260°C solderability tolerance. |
| 16 kV HBM ESD rating | Eliminates need for additional ESD protection in front-end interfaces exposed to handling or connector mating. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) I/O |
|---|---|
Use Scenario: DC input stage of 24 V industrial SMPS subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role: Primary overvoltage clamp placed across bulk capacitor input terminals. Use Value: Limits transient excursions to ≤207 V, preventing MOSFET gate oxide rupture and controller IC latch-up. |
Use Scenario: LIN bus or sensor input lines in BCM exposed to battery transients and ESD. IC Role / Device Role: Line-side TVS on 12 V supply rails feeding microcontroller GPIOs and analog sensors. Use Value: Maintains signal integrity below 207 V clamping level while surviving >16 kV contact ESD per ISO 10605. |
| Medical Equipment Isolated Signal Interface | Telecom DSL Line Card Surge Protection |
Use Scenario: Isolated analog front-end of patient monitoring device with UL 497B-compliant barrier. IC Role / Device Role: Secondary-side TVS on isolated 5 V or 3.3 V supply feeding ADC and op-amp stages. Use Value: UL 497B recognition confirms compliance for protected side of reinforced isolation barriers per IEC 60601-1. |
Use Scenario: DSL line card interface exposed to lightning-induced surges on twisted-pair copper lines. IC Role / Device Role: First-stage protection on line-side transformer secondary winding. Use Value: 600 W surge rating handles 10/700 µs telecom surges up to 1.5 kV; low capacitance avoids signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Same VRWM (128 V), identical SMB package, but lower PPK = 600 W and higher VC = 219 V at 2.7 A. | Marginally higher clamping voltage reduces protection margin for 150 V-rated downstream components. | Select P6SMB150AT3 when tighter clamping (<207 V) and UL 497B certification are required. |
| 1.5SMC150A | Higher PPK = 1500 W, DO-214AB package (larger footprint), VRWM = 128 V, VC = 246 V at 6.1 A. | Greater surge capacity suits high-energy environments but requires PCB layout change and lacks UL 497B listing. | Choose P6SMB150AT3 for space-constrained designs needing certified, low-clamp protection in SMB footprint. |
Compared with SMBJ150A and 1.5SMC150A, the P6SMB150AT3 offers the lowest clamping voltage in the SMB form factor and unique UL 497B recognition - making it optimal for safety-certified industrial and medical systems where layout area and regulatory compliance are prioritized over raw energy handling.
Availability
P6SMB150AT3 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control units, medical diagnostic interfaces, and telecom line cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB150AT3 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, and communications markets.
The P6SMB150AT3 belongs to the P6SMBxxAT3 series of unidirectional TVS diodes engineered for high-reliability overvoltage protection in harsh electrical environments - emphasizing low clamping, fast response, and regulatory compliance.
FAQ
What is the working peak reverse voltage (VRWM) of the P6SMB150AT3?
The P6SMB150AT3 has a working peak reverse voltage (VRWM) of 128 V, meaning it remains non-conductive up to this DC or continuous peak voltage level. This value ensures compatibility with 100–125 VDC industrial buses and 24/48 V systems with high transient margins. Exceeding VRWM initiates avalanche conduction, and the P6SMB150AT3 transitions into clamping mode to protect downstream circuitry.
How does the clamping voltage of the P6SMB150AT3 compare to its breakdown voltage?
The P6SMB150AT3 has a nominal breakdown voltage (VBR) of 150 V at 1 mA test current, but its maximum clamping voltage (VC) is 207 V at 2.9 A peak pulse current. This 57 V differential reflects the dynamic impedance rise under surge conditions - a critical design parameter that defines the actual overvoltage stress imposed on protected components during real-world transients.
Is the P6SMB150AT3 certified for safety-critical applications?
Yes, the P6SMB150AT3 carries UL 497B recognition (File #E210057, Category QVGQ2) for isolated loop circuit protection. This certification validates performance in medical equipment, industrial controllers, and telecom infrastructure where failure could impact safety - covering tests including strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge reliability.
What package type and mounting method does the P6SMB150AT3 use?
The P6SMB150AT3 uses the SMB (Case 403A) surface-mount package - a void-free, thermosetting plastic housing with modified L-bend leads for enhanced pad adhesion. It supports reflow soldering at 260°C for 10 seconds and is supplied in Pb−Free (RoHS-compliant) tape-and-reel format (2500 units/reel), optimized for automated assembly in high-volume production.
Can the P6SMB150AT3 replace bidirectional TVS diodes in AC-coupled circuits?
No - the P6SMB150AT3 is unidirectional and intended only for DC or single-polarity transient suppression. For AC line protection (e.g., telecom tip/ring, AC mains inputs), bidirectional variants like P6SMB150CAT3 must be used. Substituting the P6SMB150AT3 in AC applications risks forward conduction during negative half-cycles, leading to overheating or catastrophic failure.
P6SMB150AT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 2.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 150pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB150AT3 FAQ
1.How can I place an order for P6SMB150AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB150AT3 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 P6SMB150AT3 reliable?
The price and inventory of P6SMB150AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB150AT3 is usually 5 days.
3.What payment methods are accepted for P6SMB150AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB150AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB150AT3?
P6SMB150AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB150AT3 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 P6SMB150AT3?
For technical support, including P6SMB150AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB150AT3 requirements.
6.How does Aetrix verify that P6SMB150AT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB150AT3 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 P6SMB150AT3 meets industry standards.
7.What is the process for return or replacement of P6SMB150AT3?
All P6SMB150AT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB150AT3, 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 P6SMB150AT3 part is unused and in its original packaging.
Return procedure for P6SMB150AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB150AT3 Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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