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onsemi P6SMB7.5AT3
- Part No.:
- P6SMB7.5AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB7.5AT3.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:7,099
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Product details
Overview
P6SMB7.5AT3 from ON Semiconductor is a unidirectional 600 W transient voltage suppressor (TVS) diode designed for parallel overvoltage protection of DC power rails and signal lines. It features a 7.5 V nominal Zener breakdown voltage, 10.5 V maximum clamping voltage at 10 A peak pulse current, and <1 ns response time-used in automotive power supply input stages, industrial PLC I/O modules, and medical equipment surge protection circuits.
For engineers reviewing the P6SMB7.5AT3 datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (VRWM = 6.4 V), clamping performance under 10 A surge, UL 497B certification for isolated loop protection, low leakage (<500 µA @ VRWM), and SMB package thermal reliability up to +150°C junction temperature.
Technical Context
The P6SMB7.5AT3 operates as a unidirectional Zener-based TVS, conducting only during positive transients relative to its cathode. Its clamping action begins at VRWM = 6.4 V and fully engages at VBR = 7.13–7.88 V (tested at IT = 10 mA), limiting induced surges to ≤10.5 V at IPP = 10 A with <1 ns turn-on latency.
Thermally, it delivers 600 W peak pulse power (10/1000 µs waveform) with junction-to-lead thermal resistance of 40°C/W and derates linearly above 75°C ambient. Its SURMETIC® SMB package supports 260°C soldering for 10 s and meets Class 3 ESD immunity (>16 kV HBM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W @ 10/1000 µs waveform - sustains single high-energy surges without failure |
| Working Peak Reverse Voltage | 6.4 V - sets minimum operating voltage threshold before clamping activates |
| Zener Breakdown Voltage | 7.13–7.88 V @ 10 mA - defines precise conduction onset under controlled test conditions |
| Max Clamping Voltage | 10.5 V @ 10 A IPP - guarantees protected circuit sees no more than this voltage during surge |
| Leakage Current | <500 µA @ 6.4 V - ensures minimal standby power loss in always-on systems |
| Response Time | <1 ns - enables suppression of fast-rising ESD and lightning-induced transients |
| ESD Rating | Class 3 (>16 kV HBM) - exceeds IEC 61000-4-2 Level 4 for robust system-level ESD immunity |
| UL Recognition | UL 497B QVGQ2 - certified for use in isolated loop telecom and industrial safety-critical protection |
Pinout & Package
The P6SMB7.5AT3 is housed in an SMB (DO-214AA) surface-mount package (Case 403A), featuring a cathode-indicated polarity band and modified L-bend leads for enhanced pad adhesion. Dimensions: 4.32 mm × 2.13 mm × 2.20 mm (L × W × H), with 260°C soldering tolerance for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current return path during forward conduction | Connected to ground or low-side reference; completes surge current path during clamping |
| Cathode | Transient voltage sensing and clamping node | Connected to protected line (e.g., 5 V rail); conducts when voltage exceeds VRWM |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Protects only positive-going transients on DC rails-no reverse conduction risk during normal operation |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| UL 497B recognition for isolated loops | Validated for telecom line interface, PoE-powered devices, and medical isolation barrier protection |
| Pb-free SURMETIC® packaging | RoHS-compliant thermoset plastic housing with corrosion-resistant, solderable leads |
| High surge current capability (IPP = 10 A) | Withstands repeated 10 A transients per IEC 61000-4-5 Level 3 without parameter shift |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges before they reach PMIC or MCU. Use Value: Limits transient voltage to ≤10.5 V, preventing latch-up or gate oxide damage in 5 V/3.3 V logic supplies. | Use Scenario: 24 V digital input modules receiving signals from field sensors in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel to absorb inductive kickback and ESD events. Use Value: Enables reliable operation under IEC 61000-4-4 (EFT) and IEC 61000-4-2 (ESD) compliance testing. |
| Medical Equipment Isolated Power Rails | Telecom Line Interface Protection |
Use Scenario: Secondary-side 5 V/12 V rails in patient-connected devices requiring reinforced isolation and low leakage. IC Role / Device Role / Timing Role: UL 497B-certified TVS on isolated DC-DC output to protect analog front-end and data acquisition ICs. Use Value: Meets stringent leakage limits (<500 µA) while providing certified surge immunity for FDA-cleared designs. | Use Scenario: Ethernet PHY or RS-485 transceiver interfaces connected to outside plant wiring. IC Role / Device Role / Timing Role: Primary-line TVS on differential pair inputs to suppress lightning-induced common-mode surges. Use Value: Maintains signal integrity by clamping within 10.5 V while supporting >16 kV HBM ESD robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Lower VRWM (6.0 V), higher IPP (11.2 A), same SMB package | Better suited for 5 V systems with tighter voltage margins | Select when VRWM must be ≤6.0 V and higher surge margin is required |
| 1.5SMC7.5A | Larger SMC package (7.1 mm × 6.2 mm), identical electrical specs | Higher thermal mass but requires larger PCB footprint | Choose for higher board-level thermal dissipation needs or legacy SMC layout compatibility |
Compared with P6SMB7.5AT3, SMBJ7.0A offers tighter voltage coordination for 5 V rails but reduces design margin against normal operating overshoot; 1.5SMC7.5A provides identical clamping performance with greater thermal endurance at the cost of PCB area and assembly compatibility.
Availability
P6SMB7.5AT3 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and medical device power supply designs requiring stable component supply across multi-year production cycles.
Supply support for P6SMB7.5AT3 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 P6SMB7.5AT3 belongs to ON Semiconductor's P6SMBxxAT3 series of 600 W unidirectional TVS diodes, engineered for high-reliability surge protection in harsh environments where UL 497B certification and low clamping voltage are critical.
FAQ
What is the working peak reverse voltage (VRWM) of the P6SMB7.5AT3?
The P6SMB7.5AT3 has a working peak reverse voltage (VRWM) of 6.4 V, meaning it remains non-conductive below this DC or continuous peak voltage level and begins clamping only when transients exceed this threshold. This value ensures compatibility with standard 5 V systems while maintaining sufficient margin against normal operating ripple. The P6SMB7.5AT3 maintains low leakage (<500 µA) at VRWM, minimizing standby power impact.
How does the clamping voltage of the P6SMB7.5AT3 compare to its breakdown voltage?
The P6SMB7.5AT3 exhibits a clamping voltage (VC) of 10.5 V at 10 A peak pulse current, while its Zener breakdown voltage (VBR) ranges from 7.13 V to 7.88 V at 10 mA test current. This results in a clamping ratio of approximately 1.35, indicating tight voltage control during surge events. The P6SMB7.5AT3 achieves this with low dynamic impedance, ensuring predictable protection without excessive overvoltage stress on downstream components.
Is the P6SMB7.5AT3 RoHS compliant and lead-free?
Yes, the P6SMB7.5AT3 is RoHS compliant and offered in a Pb-free SURMETIC® package, indicated by the "G" suffix in the full ordering code P6SMB7.5AT3G. The device meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements and supports standard reflow profiles, including peak temperatures up to 260°C for 10 seconds. The P6SMB7.5AT3 maintains full electrical specifications in both standard and Pb-free configurations.
Does the P6SMB7.5AT3 have UL recognition, and for what standard?
Yes, the P6SMB7.5AT3 carries UL 497B recognition under file #E210057, specifically certified for isolated loop circuit protection. This validation covers performance in telecom, industrial control, and medical applications requiring reinforced insulation barriers. The P6SMB7.5AT3 passed multiple UL tests including strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge verification-going beyond basic flammability compliance.
What is the maximum peak pulse current (IPP) rating for the P6SMB7.5AT3?
The P6SMB7.5AT3 is rated for a maximum peak pulse current (IPP) of 10 A under the standard 10/1000 µs double-exponential waveform. This rating corresponds directly to its 600 W peak power dissipation capability and is validated per IEC 61000-4-5. The P6SMB7.5AT3 maintains stable clamping performance and post-surge parameter integrity after repeated 10 A pulses, making it suitable for high-reliability industrial and automotive surge protection.
P6SMB7.5AT3 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 53A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 2180pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
P6SMB7.5AT3 FAQ
1.How can I place an order for P6SMB7.5AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB7.5AT3 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 P6SMB7.5AT3 reliable?
The price and inventory of P6SMB7.5AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB7.5AT3 is usually 5 days.
3.What payment methods are accepted for P6SMB7.5AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB7.5AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB7.5AT3?
P6SMB7.5AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB7.5AT3 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 P6SMB7.5AT3?
For technical support, including P6SMB7.5AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB7.5AT3 requirements.
6.How does Aetrix verify that P6SMB7.5AT3 is sourced from the original manufacturer or authorized distributors?
All P6SMB7.5AT3 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 P6SMB7.5AT3 meets industry standards.
7.What is the process for return or replacement of P6SMB7.5AT3?
All P6SMB7.5AT3 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB7.5AT3, 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 P6SMB7.5AT3 part is unused and in its original packaging.
Return procedure for P6SMB7.5AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB7.5AT3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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