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Taiwan Semiconductor Corporation P6SMB120
- Part No.:
- P6SMB120
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120.pdf
- Description:
- 600W, 120V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,574
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Product details
Overview
P6SMB120 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal paths. It features a breakdown voltage range of 108–132 V, clamps transients to ≤173 V at 3.6 A peak pulse current, and operates within -55°C to +150°C junction temperature. It is used in switching mode power supplies and industrial adapters requiring robust surge immunity per ISO 7637-2 Pulse 1/2a/2b/3a/3b.
For engineers reviewing the P6SMB120 datasheet, P6SMB120 pinout, P6SMB120 application, or P6SMB120 equivalent, key selection criteria include its 97.2 V standoff voltage, <1 μA reverse leakage at VWM, 10 ns response time, DO-214AA (SMB) package compatibility with automated placement, and compliance with RoHS and halogen-free standards.
Technical Context
The P6SMB120 is a single-die, unidirectional avalanche diode optimized for fast clamping of high-energy transients using a glass-passivated junction. Its 10/1000 μs waveform rating of 600 W defines its surge-handling capability under standardized automotive and industrial surge conditions.
Thermal performance is characterized by RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation up to 150 °C junction temperature. The device exhibits a VBR temperature coefficient of 0.107 %/°C, ensuring predictable voltage drift across operating temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 108 V / 132 V - ensures reliable triggering above system nominal voltage while maintaining margin against false clamping |
| VWM | 97.2 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 173 V - clamped voltage during 3.6 A 10/1000 μs transient, defining worst-case downstream voltage stress |
| PPPSM | 600 W - peak pulse power handling per standard 10/1000 μs waveform, critical for ISO 7637-2 compliance |
| IPPM | 3.6 A - maximum non-repetitive peak pulse current supported without degradation |
| TJ max | +150 °C - maximum junction temperature enabling use in high-ambient industrial environments |
| Package | DO-214AA (SMB) - surface-mount outline with 0.090 g mass, UL 94V-0 molding, and matte tin-plated leads |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; terminals are matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping to ground |
| Cathode | Current exit point during reverse-biased clamping | Connected to higher-potential rail (e.g., VIN); conducts surge current to ground when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps from 0 V to VBR(min) - enables suppression before sensitive circuitry sustains damage |
| Low reverse leakage | <1 μA at 97.2 V - minimizes standby power loss and avoids false triggering in high-impedance circuits |
| ISO 7637-2 compliance | Validated for Pulse 1, 2a, 2b, 3a, 3b - meets automotive ECU-level surge immunity requirements |
| Moisture sensitivity | Level 1 per J-STD-020 - allows unlimited floor life and eliminates bake requirements prior to reflow |
| Halogen-free construction | Complies with IEC 61249-2-21 - supports environmental compliance and safer end-of-life processing |
Applications
| Switching Mode Power Supply (SMPS) | Industrial Adapter |
|---|---|
Use Scenario: Protection of primary-side rectifier output and secondary-side DC bus against line surges and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input capacitor to clamp transients before they reach controller ICs and MOSFETs. Use Value: Limits voltage excursions to ≤173 V during 600 W surges, preventing gate oxide rupture in 200 V-rated MOSFETs and overvoltage lockout in PWM controllers. | Use Scenario: Input-stage surge protection in wall-mounted AC/DC adapters for factory automation equipment. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between L/N and earth ground to absorb differential-mode transients per IEC 61000-4-5. Use Value: Withstands 3.6 A peak pulses without degradation, maintaining 97.2 V operating margin while supporting long-term reliability in 85–264 VAC input designs. |
| Television Power Board | Monitor DC Input Stage |
Use Scenario: Secondary-side overvoltage clamp on 12 V or 24 V main power rails feeding backlight inverters and audio amplifiers. IC Role / Device Role / Timing Role: Fast-acting shunt protector that activates within picoseconds to divert energy away from downstream regulators and display drivers. Use Value: Clamps 10/1000 μs transients to 173 V, preserving 25 V-rated electrolytic capacitors and avoiding latch-up in 3.3 V/5 V logic supply ICs. | Use Scenario: Input protection for USB-C PD or external 19 V DC input jacks exposed to accidental hot-plug events and ESD coupling. IC Role / Device Role / Timing Role: Primary-line TVS positioned immediately after the input connector to intercept surges before PCB routing distributes noise. Use Value: Leverages 0.090 g SMB footprint for compact layout and achieves <1 μA leakage at 97.2 V, eliminating standby current concerns in always-on monitor standby modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A | Breakdown range 126–139 V; tighter VBR tolerance (±5% vs ±10% for P6SMB120); same DO-214AA package | Higher VBR min improves noise immunity in noisy 120 VAC-derived rails but reduces margin below 132 V absolute max | Select SMBJ120A when tighter VBR control is required and system tolerances allow higher clamping onset |
| 1.5SMC120A | Same VBR (108–132 V), but 1500 W rating; larger DO-214AB (SMC) package; higher thermal mass | Supports higher surge repetition rates and longer pulse durations due to 2.5× peak power rating | Choose 1.5SMC120A where sustained surge duty cycles or higher IPPM (>3.6 A) are expected, accepting larger board area |
Compared with P6SMB120, SMBJ120A offers improved VBR consistency for precision-clamp designs, while 1.5SMC120A delivers greater surge endurance at the cost of footprint size-making P6SMB120 optimal for space-constrained, single-event surge protection in consumer and industrial adapters.
Availability
P6SMB120 is available at Aetrix Electronics and suitable for switching mode power supplies, industrial adapters, and television power boards requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB120 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 bipolar transistors.
The P6SMB120 belongs to TSC's P6SMB series of 600 W SMB-packaged TVS diodes, engineered for cost-effective, high-reliability surge protection in consumer, industrial, and automotive auxiliary power systems.
FAQ
What is the maximum clamping voltage of the P6SMB120 under standard test conditions?
The P6SMB120 has a maximum clamping voltage (VC) of 173 V when subjected to its rated peak pulse current of 3.6 A using the 10/1000 μs waveform. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB120 maintains this clamping performance across its specified operating temperature range.
Is the P6SMB120 suitable for bidirectional transient protection?
No, the P6SMB120 is a unidirectional TVS diode intended for DC line protection with defined anode-cathode polarity. For bidirectional applications, the P6SMB120A variant (breakdown 114–126 V) or parts with "C" or "CA" suffixes must be used. The P6SMB120 lacks symmetrical breakdown characteristics and will not clamp negative-going transients effectively.
What is the standoff voltage (VWM) of the P6SMB120, and why does it matter?
The P6SMB120 has a standoff voltage (VWM) of 97.2 V, representing the maximum continuous reverse voltage it can block without exceeding 1 μA leakage current. This parameter ensures the P6SMB120 remains non-conductive during normal operation while providing sufficient margin below its 108 V minimum breakdown voltage-critical for avoiding false triggering in 90–100 V DC systems.
Does the P6SMB120 meet automotive surge immunity standards?
Yes, the P6SMB120 meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for automotive body electronics and infotainment power supplies. Its 600 W peak pulse rating, fast <1.0 ps response, and 150 °C junction rating align with harsh-temperature vehicle environments-though system-level validation per ISO 16750-2 remains necessary for full qualification.
What packaging and reel quantity is offered for the P6SMB120?
The P6SMB120 is supplied in DO-214AA (SMB) package format on tape-and-reel, with 3,000 units per reel. The package features matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 flammability rating, and JESD 201 Class 2 whisker resistance-ensuring compatibility with automated SMT assembly and long-term reliability in reflow processes.
P6SMB120 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):
- 97.2V
- Voltage - Breakdown (Min):
- 108V
- Voltage - Clamping (Max) @ Ipp:
- 173V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- 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)
P6SMB120 FAQ
1.How can I place an order for P6SMB120 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120 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 P6SMB120 reliable?
The price and inventory of P6SMB120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120 is usually 5 days.
3.What payment methods are accepted for P6SMB120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120?
P6SMB120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120 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 P6SMB120?
For technical support, including P6SMB120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120 requirements.
6.How does Aetrix verify that P6SMB120 is sourced from the original manufacturer or authorized distributors?
All P6SMB120 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 P6SMB120 meets industry standards.
7.What is the process for return or replacement of P6SMB120?
All P6SMB120 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120, 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 P6SMB120 part is unused and in its original packaging.
Return procedure for P6SMB120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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