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Taiwan Semiconductor Corporation P6SMB75
- Part No.:
- P6SMB75
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB75.pdf
- Description:
- 600W, 75V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,236
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Product details
Overview
P6SMB75 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 67.5V to 82.5V, stand-off voltage of 60.7V, and clamping voltage of 108V at 5.8A peak pulse current. It is designed for overvoltage protection in DC power rails of switching mode power supplies, adapters, and display electronics.
For engineers reviewing the P6SMB75 datasheet, P6SMB75 pinout, P6SMB75 application, or P6SMB75 equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, 108V clamping performance under 10/1000μs surge, <1μA leakage at 60.7V, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive-grade transient immunity.
Technical Context
The P6SMB75 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR (67.5–82.5V), then clamping transients to ≤108V at 5.8A. Its glass-passivated junction ensures stable breakdown and low leakage (<1μA @ 60.7V).
Thermal design relies on RθJC = 10°C/W and RθJA = 55°C/W, supporting operation from –55°C to +150°C junction temperature. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for SMB molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 67.5V / 82.5V - defines reliable avalanche initiation window under 1mA test current |
| VWM | 60.7V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 108V @ 5.8A - clamping voltage during 10/1000μs surge, limiting downstream voltage stress |
| PPPSM | 600W - non-repetitive peak pulse power handling per ISO 7637-2 standard waveforms |
| IR @ VWM | <1μA - ultra-low reverse leakage ensures minimal standby power loss in protected circuits |
| TJ max | +150°C - enables use in high-temperature environments such as enclosed power adapters |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline with 0.090g mass and matte tin-plated leads |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; terminals are matte tin-plated, solderable per J-STD-002; polarity is marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased protection terminal | Connected to protected line (e.g., +12V rail); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | 108V clamping at 5.8A ensures robust protection of 75V-rated ICs against ISO 7637-2 Pulse 5a surges |
| Response time | <1.0ps response from 0V to VBR min enables suppression before sensitive circuitry is stressed |
| Leakage control | <1μA reverse leakage at 60.7V minimizes quiescent current impact in battery-backed or energy-sensitive systems |
| Automated assembly support | Low-profile DO-214AA package optimized for pick-and-place accuracy and reflow compatibility |
| Environmental compliance | RoHS-compliant and halogen-free per IEC 61249-2-21, suitable for green manufacturing programs |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier outputs against load dump and line transients. IC Role / Device Role: Unidirectional TVS placed across DC bus or output rail to clamp ESD and surge events. Use Value: 108V clamping limits stress on 100V-rated output capacitors and synchronous rectifiers without derating. | Use Scenario: Input-stage surge suppression in wall-mounted 12–24V adapters exposed to mains-borne transients. IC Role / Device Role: Standoff-rated TVS on AC-input bridge output or DC-output rail to absorb 600W ISO 7637-2 pulses. Use Value: 60.7V VWM allows safe operation with 56V nominal input while maintaining margin against ripple-induced false triggering. |
| Television Power Board | Monitor Backlight Inverter |
Use Scenario: Overvoltage protection on main 12V/24V logic and audio supply rails subject to internal switching noise and hot-swap transients. IC Role / Device Role: Localized TVS mounted near SoC or audio amplifier ICs to prevent latch-up from fast-rising transients. Use Value: Sub-1μA leakage avoids loading low-current standby rails; SMB footprint fits dense PCB layouts. | Use Scenario: Clamping of flyback transformer leakage spikes and cold-cathode fluorescent lamp (CCFL) ignition surges on inverter output. IC Role / Device Role: High-energy TVS placed across inverter secondary winding to limit voltage overshoot during lamp strike. Use Value: 600W peak power rating handles repetitive 10/1000μs spikes without thermal runaway or parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | 75V bidirectional variant; VBR = 78.8–86.1V; VC = 121V @ 4.9A; same SMB package | Supports AC-coupled or bipolar signal lines; not suitable for DC-only unidirectional rails without redesign | Select P6SMB75 for cost-optimized unidirectional DC rail protection where polarity is fixed and clamping voltage margin is critical. |
| 1.5SMC75A | Same VBR/VC specs but in larger DO-214AB (SMC) package; higher thermal mass (RθJA = 35°C/W) | Better sustained surge handling in high-ambient-temperature environments; requires larger PCB area | Choose P6SMB75 when board space is constrained and 600W single-pulse capability suffices without extended thermal cycling. |
Compared with SMBJ75A and 1.5SMC75A, the P6SMB75 offers tighter clamping (108V vs. 121V/108V), lower leakage, and smaller SMB footprint-making it optimal for compact, unidirectional DC power rail protection where layout density and precise voltage limiting are prioritized.
Availability
P6SMB75 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply, RoHS-compliant packaging, and ISO 7637-2 certified transient immunity.
Supply support for P6SMB75 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The P6SMB75 belongs to TSC's P6SMBx series of 600W SMB-packaged TVS diodes, engineered for cost-effective, high-reliability overvoltage protection in consumer and industrial power conversion systems.
FAQ
What is the breakdown voltage range of the P6SMB75?
The P6SMB75 has a specified breakdown voltage (VBR) range of 67.5V to 82.5V at 1.0mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent avalanche initiation across production lots and temperature extremes, enabling reliable overvoltage detection in 75V-class power rails. The P6SMB75 achieves this using a glass-passivated silicon junction for long-term stability.
Is the P6SMB75 unidirectional or bidirectional?
The P6SMB75 is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. It conducts only in reverse bias above VBR, with cathode band marking polarity. Unlike bidirectional variants (e.g., P6SMB75CA), the P6SMB75 must be oriented correctly in-circuit-its anode tied to ground and cathode to the protected line-to function as intended.
What is the maximum clamping voltage of the P6SMB75 under surge conditions?
The P6SMB75 clamps to a maximum of 108V at 5.8A peak pulse current (IPPM) under the standard 10/1000μs waveform. This value is guaranteed across temperature and lot variations, and directly determines the voltage stress imposed on downstream components like MOSFETs or regulators. The P6SMB75 achieves this clamping with sub-1.0ps response time and <1μA leakage at its 60.7V stand-off voltage.
Does the P6SMB75 meet automotive transient immunity standards?
Yes, the P6SMB75 meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b waveforms-covering load dump, supply interruption, and coupled transient events in 12V automotive systems. Its 600W peak pulse power rating, 108V clamping, and –55°C to +150°C operating range make the P6SMB75 suitable for front-end protection in infotainment power modules and body control units.
What is the thermal resistance profile of the P6SMB75?
The P6SMB75 has a junction-to-case thermal resistance (RθJC) of 10°C/W and junction-to-ambient resistance (RθJA) of 55°C/W, measured in free-air conditions. These values enable effective heat dissipation during transient events and support continuous operation up to +150°C junction temperature. The DO-214AA (SMB) package's low mass (0.090g) and matte tin-plated leads further enhance thermal and solder joint reliability for the P6SMB75.
P6SMB75 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 60.7V
- Voltage - Breakdown (Min):
- 67.5V
- Voltage - Clamping (Max) @ Ipp:
- 108V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- Power - Peak Pulse:
- 600W
- 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:
- DO-214AA (SMB)
P6SMB75 FAQ
1.How can I place an order for P6SMB75 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB75 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 P6SMB75 reliable?
The price and inventory of P6SMB75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB75 is usually 5 days.
3.What payment methods are accepted for P6SMB75?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB75 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB75?
P6SMB75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB75 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 P6SMB75?
For technical support, including P6SMB75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB75 requirements.
6.How does Aetrix verify that P6SMB75 is sourced from the original manufacturer or authorized distributors?
All P6SMB75 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 P6SMB75 meets industry standards.
7.What is the process for return or replacement of P6SMB75?
All P6SMB75 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB75, 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 P6SMB75 part is unused and in its original packaging.
Return procedure for P6SMB75:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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