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Taiwan Semiconductor Corporation P6SMB180A
- Part No.:
- P6SMB180A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB180A.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,035
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Product details
Overview
P6SMB180A 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 standoff voltage of 154 V, breakdown voltage range of 171–189 V at 1 mA, clamping voltage of 246 V at 2.5 A peak pulse current, and operates across –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.
For engineers reviewing the P6SMB180A datasheet, P6SMB180A pinout, P6SMB180A application, or P6SMB180A equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, unidirectional polarity marking, 1.0 µA max reverse leakage at VWM, 10 ns response time, and compliance with automotive pulse test standards (Pulse 1/2a/2b/3a/3b).
Technical Context
The P6SMB180A implements a glass-passivated silicon junction optimized for fast transient suppression with sub-10 ns response. Its thermal design supports 10°C/W junction-to-case resistance and 55°C/W junction-to-ambient resistance, enabling reliable operation under repetitive surge conditions when mounted on adequate copper area.
It is rated for non-repetitive 600 W peak pulse power (10/1000 µs waveform), 3 W steady-state dissipation at 25°C, and withstands 100 A forward surge (8.3 ms half-sine). Electrical behavior is defined by a 0.108 %/°C temperature coefficient of VBR and meets JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 154 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR (min/max) | 171 V / 189 V at 1 mA - Confirmed breakdown threshold range for reliable clamping onset |
| VC @ IPPM | 246 V at 2.5 A - Clamped voltage during full-rated 600 W transient, limiting downstream stress |
| PPPM | 600 W (10/1000 µs) - Peak surge energy handling capacity compliant with ISO 7637-2 Pulse 1/2a/2b/3a/3b |
| IR @ VWM | ≤1 µA - Low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ Range | –55°C to +150°C - Extended thermal envelope suitable for under-hood automotive and industrial ambient environments |
| RθJA | 55°C/W - Thermal resistance defining maximum power derating above 25°C ambient |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads, UL 94V-0 molding compound, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or clamping | Connected to protected line's lower-potential side (e.g., GND or return path) |
| Cathode (banded end) | Current exit terminal during reverse-biased clamping | Connected to protected line's higher-potential side (e.g., VIN, bus rail); polarity mark critical for correct installation |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | Typically <10 ns - Enables suppression of ESD and fast transients before sensitive ICs are damaged |
| Glass passivated junction | Enhanced reliability and stable VBR over lifetime - Reduces parameter drift under thermal cycling and humidity stress |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - Meets automotive OEM requirements |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - Supports environmentally compliant manufacturing and end-of-life processing |
| Low-profile SMB package | 3.56 mm × 4.57 mm footprint - Enables high-density PCB layouts and compatibility with automated SMT placement equipment |
Applications
| Switching Mode Power Supply (SMPS) | Industrial Adapter |
|---|---|
Use Scenario: Protection of primary-side rectifier output and secondary-side DC bus against load dump and line surges. IC Role / Device Role: Unidirectional TVS placed across bulk capacitor or input rectifier to clamp transients before they reach PWM controller or output stage. Use Value: Limits voltage excursion to ≤246 V during 600 W surges, preventing MOSFET avalanche failure and maintaining regulation stability. | Use Scenario: Input-stage surge protection in wall-mounted AC/DC adapters for factory automation equipment. IC Role / Device Role: Primary-side TVS connected between L/N and earth or across bridge rectifier output. Use Value: Withstands repeated 10/1000 µs surges up to 2.5 A while maintaining <1 µA leakage at 154 V, ensuring no standby power penalty. |
| Automotive Infotainment Display | Industrial Motor Drive Control Board |
Use Scenario: Protection of LVDS or FPD-Link video interface supply rails against battery line transients. IC Role / Device Role: TVS on 12 V or 5 V bias rail feeding display timing controller or serializer ICs. Use Value: Clamps ISO 7637-2 Pulse 2b transients to ≤246 V within 10 ns, preserving signal integrity and avoiding display reset or corruption. | Use Scenario: DC link overvoltage suppression in 24–48 V motor drive inverters exposed to inductive kickback. IC Role / Device Role: TVS across main DC bus capacitors to absorb regenerative energy spikes during rapid deceleration. Use Value: Handles 600 W peak pulses without degradation, extending capacitor life and eliminating need for active crowbar circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180A | Same DO-214AA package, identical VWM (154 V), VBR (171–189 V), and VC (246 V); manufactured by Vishay | No functional deviation - validated for same ISO 7637-2 pulse profiles and thermal derating curves | Drop-in alternative with identical electrical and mechanical specs; preferred where dual-sourcing is required |
| 1.5SMC180A | Larger DO-214AB (SMC) package (7.11 mm × 6.22 mm); otherwise matches VWM, VBR, VC, and PPPM ratings | Requires PCB layout change due to larger footprint and higher thermal mass; better suited for higher average power dissipation scenarios | Select when board space allows and enhanced thermal margin is needed beyond SMB's 55°C/W RθJA |
Compared with P6SMB180A, SMBJ180A offers identical performance in the same SMB footprint for seamless second-source qualification, while 1.5SMC180A trades compactness for improved thermal handling in thermally constrained designs.
Availability
P6SMB180A is available at Aetrix Electronics and suitable for switching mode power supplies, industrial adapters, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and ISO 7637-2-compliant surge protection.
Supply support for P6SMB180A 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 Company (TSC) is a vertically integrated Taiwanese manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and MOSFETs, with ISO 9001 and IATF 16949 certification.
The P6SMB series was developed for cost-effective, high-reliability transient suppression in automotive and industrial power conversion, emphasizing low leakage, tight VBR tolerance, and standardized SMB packaging for SMT scalability.
FAQ
What is the maximum clamping voltage of the P6SMB180A under rated surge conditions?
The P6SMB180A has a maximum clamping voltage (VC) of 246 V when subjected to its rated peak pulse current of 2.5 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a full 600 W transient event. The P6SMB180A maintains this clamping performance across its specified junction temperature range.
Is the P6SMB180A suitable for bidirectional transient protection?
No, the P6SMB180A is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. It conducts only during reverse-biased overvoltage events and must be installed with correct cathode orientation. For bidirectional protection, select P6SMB180CA - which provides symmetrical clamping in both polarities and uses the same DO-214AA package.
Does the P6SMB180A meet automotive surge immunity standards?
Yes, the P6SMB180A is explicitly tested and compliant with ISO 7637-2 for Pulses 1, 2a, 2b, 3a, and 3b - the core transient immunity requirements for 12 V and 24 V automotive electrical systems. Its 600 W rating, fast response, and thermal robustness make it suitable for engine control units, body controllers, and infotainment power rails.
What is the reverse leakage current specification for the P6SMB180A at its standoff voltage?
The P6SMB180A specifies a maximum reverse leakage current (IR) of 1 µA when biased at its standoff voltage (VWM) of 154 V and measured at 25°C. This ultra-low leakage minimizes power loss in always-on circuits and avoids false triggering in high-impedance sensing nodes, a key advantage over higher-leakage alternatives.
Can the P6SMB180A be used in place of the P6SMB180 without redesign?
Yes - the P6SMB180A replaces P6SMB180 with tighter VBR tolerance (171–189 V vs. 162–198 V) and identical package, pinout, and electrical ratings including VWM, VC, and PPPM. No PCB or schematic changes are required; the "A" suffix denotes enhanced parameter consistency and is backward compatible in all P6SMB180A applications.
P6SMB180A 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):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
P6SMB180A FAQ
1.How can I place an order for P6SMB180A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB180A 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 P6SMB180A reliable?
The price and inventory of P6SMB180A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB180A is usually 5 days.
3.What payment methods are accepted for P6SMB180A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB180A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB180A?
P6SMB180A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB180A 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 P6SMB180A?
For technical support, including P6SMB180A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB180A requirements.
6.How does Aetrix verify that P6SMB180A is sourced from the original manufacturer or authorized distributors?
All P6SMB180A 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 P6SMB180A meets industry standards.
7.What is the process for return or replacement of P6SMB180A?
All P6SMB180A units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB180A, 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 P6SMB180A part is unused and in its original packaging.
Return procedure for P6SMB180A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB180A Tags
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