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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Taiwan Semiconductor Corporation P4SMA150

Name: P4SMA150
Brand: Taiwan Semiconductor Corporation
SKU: P4SMA150
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: P4SMA150

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

Package:: DO-214AC, SMA

Datasheet:: P4SMA150.pdf

Description:: 400W, 150V, 10%, UNIDIRECTIONAL,

Quantity:: RFQ Add To RFQ list

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Inventory:7,523

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Product details

Overview

P4SMA150 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and switching transients. It features a 121 V working stand-off voltage (V_WM), 135–165 V breakdown voltage (V_BR), 215 V maximum clamping voltage (V_C) at 1.9 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in DC/DC converters, industrial power supplies, and lighting control circuits.

For engineers reviewing the P4SMA150 datasheet, P4SMA150 pinout, P4SMA150 application, or P4SMA150 equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, junction temperature range (−55°C to +150°C), moisture sensitivity level (J-STD-020 Level 1), and compatibility with automated SMT placement on high-reliability power rails.

Technical Context

The P4SMA150 operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable breakdown behavior and low leakage (<1 µA at V_WM). Its fast response time (<1.0 ps) enables suppression of sub-nanosecond ESD events before system damage occurs.

It complies with ISO 7637-2 for automotive transient immunity and supports operation across −55°C to +150°C junction temperature, with thermal derating above 25°C ambient per published curve (Fig.2). The device uses a single-die configuration in DO-214AC package with cathode band polarity marking.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	121 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC bias margin in protected line
V_BR @ I_T=1 mA	135–165 V - Breakdown voltage range at 1 mA test current; ensures consistent avalanche initiation across production lot
V_C @ I_PPM=1.9 A	215 V - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs
P_PPM	400 W - Peak pulse power handling capability; validates robustness against standardized surge waveforms
I_R @ V_WM	<1 µA - Reverse leakage at stand-off voltage; critical for low-power standby circuits and battery-backed systems
T_J Range	−55°C to +150°C - Full operational junction temperature range; supports under-hood and industrial ambient conditions

Pinout & Package

Package: DO-214AC (SMA), surface-mount, single-ended unidirectional configuration with molded plastic case meeting UL 94V-0 flammability rating and matte tin-plated leads compliant with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal	Connected to lower-potential side (e.g., GND or return path); conducts during forward surge or fault
Cathode (banded end)	Avalanche clamping terminal	Connected to protected line (e.g., 12 V rail); initiates breakdown when reverse voltage exceeds V_BR

Key Features

Feature	Design Value
Glass-passivated junction	Ensures long-term stability of V_BR and low parameter drift over temperature and lifetime
Clamping ratio (V_C/V_BR)	~1.58 (215 V / 136 V typical) - balances protection margin and voltage headroom for downstream components
ISO 7637-2 compliance	Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching noise) - suitable for automotive ECUs
Moisture sensitivity level	J-STD-020 Level 1 - allows unlimited floor life before reflow; no baking required prior to assembly

Applications

Switching Mode Power Supply (SMPS)	On-board DC/DC Converter
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier inputs against turn-off spikes and cross-conduction transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input/output rails to clamp voltage overshoot during switching transitions. Use Value: Limits peak stress to ≤215 V during 400 W surges, preserving reliability of 200 V-rated MOSFETs and Schottky diodes.	Use Scenario: Safeguarding isolated buck/boost converter outputs feeding FPGA I/O banks or microcontroller peripherals. IC Role / Device Role / Timing Role: Standoff-clamp element on regulated 3.3 V, 5 V, or 12 V output lines exposed to board-level coupling noise. Use Value: Sub-1 µA leakage at 121 V V_WM prevents loading of low-current feedback networks while maintaining fast <1 ps response.
Industrial Lighting Control	Automotive Body Control Module (BCM)
Use Scenario: Surge protection for DALI/0–10 V dimming interfaces and LED driver enable lines subjected to cable discharge events. IC Role / Device Role / Timing Role: Line-transient suppressor between controller GPIO and external wiring harness. Use Value: Withstands repeated 10/1000 µs pulses up to 400 W without degradation, supporting >100,000 surge cycles per JEDEC standards.	Use Scenario: Input rail protection for LIN bus transceivers and window lift motor drivers exposed to battery load dump. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail upstream of LDOs and CAN/LIN interface ICs. Use Value: Meets ISO 7637-2 Pulse 2a (100 V/50 ms) and Pulse 5a (75 V/400 ms) requirements with verified clamping performance.

Switching Mode Power Supply (SMPS)

On-board DC/DC Converter

Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier inputs against turn-off spikes and cross-conduction transients.

IC Role / Device Role / Timing Role: Unidirectional TVS placed across input/output rails to clamp voltage overshoot during switching transitions.

Use Value: Limits peak stress to ≤215 V during 400 W surges, preserving reliability of 200 V-rated MOSFETs and Schottky diodes.

Use Scenario: Safeguarding isolated buck/boost converter outputs feeding FPGA I/O banks or microcontroller peripherals.

IC Role / Device Role / Timing Role: Standoff-clamp element on regulated 3.3 V, 5 V, or 12 V output lines exposed to board-level coupling noise.

Use Value: Sub-1 µA leakage at 121 V V_WM prevents loading of low-current feedback networks while maintaining fast <1 ps response.

Industrial Lighting Control

Automotive Body Control Module (BCM)

Use Scenario: Surge protection for DALI/0–10 V dimming interfaces and LED driver enable lines subjected to cable discharge events.

IC Role / Device Role / Timing Role: Line-transient suppressor between controller GPIO and external wiring harness.

Use Value: Withstands repeated 10/1000 µs pulses up to 400 W without degradation, supporting >100,000 surge cycles per JEDEC standards.

Use Scenario: Input rail protection for LIN bus transceivers and window lift motor drivers exposed to battery load dump.

IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail upstream of LDOs and CAN/LIN interface ICs.

Use Value: Meets ISO 7637-2 Pulse 2a (100 V/50 ms) and Pulse 5a (75 V/400 ms) requirements with verified clamping performance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ150A	DO-214AA (SMB) package; 150 V V_WM, 243 V V_C @ 1.65 A; 600 W P_PPM	Higher clamping voltage and larger footprint; better suited for higher-energy surges where PCB space permits	Select SMBJ150A when surge energy exceeds 400 W or when thermal mass requirements demand larger package
1.5SMC150A	DO-214AB (SMC) package; 150 V V_WM, 243 V V_C @ 1.65 A; 1500 W P_PPM	Triple the peak power rating and higher thermal mass; requires larger pad layout and reflow profile adjustment	Choose 1.5SMC150A for industrial motor drives or EV charging interfaces requiring >1 kA surge tolerance

Compared with P4SMA150, SMBJ150A offers higher surge capacity in a slightly larger DO-214AA body, while 1.5SMC150A delivers threefold power handling in DO-214AB - both require layout revision and are not drop-in replacements due to differing package dimensions and thermal profiles.

Availability

P4SMA150 is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and industrial lighting control systems requiring stable component supply, J-STD-020 Level 1 moisture handling, and ISO 7637-2 validated transient immunity.

Supply support for P4SMA150 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, and power MOSFETs for industrial and automotive markets.

The P4SMA series belongs to TSC's surface-mount TVS portfolio engineered for high-reliability transient suppression in space-constrained, high-volume SMT applications - emphasizing low leakage, tight V_BR tolerance, and repeatable clamping performance.

FAQ

What is the maximum clamping voltage of the P4SMA150 under standard surge conditions?

The P4SMA150 has a maximum clamping voltage (V_C) of 215 V when subjected to a 10/1000 µs waveform with a peak pulse current (I_PPM) of 1.9 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.

Is the P4SMA150 suitable for automotive applications requiring ISO 7637-2 compliance?

Yes, the P4SMA150 meets ISO 7637-2 for Pulses 1, 2a, 2b, 3a, and 3b, making it suitable for automotive body electronics, infotainment power rails, and BCM modules. Its −55°C to +150°C operating junction temperature range and glass-passivated junction ensure stable performance under vehicle environmental stress, though system-level validation remains the designer's responsibility.

Does the P4SMA150 have bidirectional capability?

No, the P4SMA150 is a unidirectional TVS diode. Bidirectional variants carry a "C" or "CA" suffix (e.g., P4SMA150C). The P4SMA150 features a cathode band marking and must be oriented with cathode toward the protected line - reverse connection results in forward conduction rather than clamping during negative transients.

What is the moisture sensitivity level (MSL) and reflow profile guidance for P4SMA150?

The P4SMA150 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and does not require dry-packaging or baking before reflow. Standard lead-free reflow profiles (peak 260°C, 60–90 sec above 217°C) apply, and its matte tin-plated leads comply with J-STD-002 for solderability without post-reflow cleaning.

How does the P4SMA150 compare to the P4SMA150A variant?

The P4SMA150A offers tighter breakdown voltage tolerance (143–158 V vs. 135–165 V for P4SMA150) and slightly higher V_WM (128 V vs. 121 V), resulting in improved margin against false triggering in noisy environments. Both share identical DO-214AC packaging, 400 W rating, and thermal specs - the "A" suffix denotes enhanced V_BR uniformity for precision-sensitive designs.

P4SMA150 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Package/Case:: DO-214AC, SMA

Series:: P4SMA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 121V

Voltage - Breakdown (Min):: 135V

Voltage - Clamping (Max) @ Ipp:: 215V

Current - Peak Pulse (10/1000µs):: 1.9A

Power - Peak Pulse:: 400W

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-214AC (SMA)

P4SMA150 FAQ

1.How can I place an order for P4SMA150 through Aetrix?

Please submit a Request for Quotation (RFQ) for P4SMA150 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 P4SMA150 reliable?

The price and inventory of P4SMA150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA150 is usually 5 days.

3.What payment methods are accepted for P4SMA150?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for P4SMA150?

P4SMA150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your P4SMA150 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 P4SMA150?

For technical support, including P4SMA150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150 requirements.

6.How does Aetrix verify that P4SMA150 is sourced from the original manufacturer or authorized distributors?

All P4SMA150 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 P4SMA150 meets industry standards.

7.What is the process for return or replacement of P4SMA150?

All P4SMA150 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150, 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 P4SMA150 part is unused and in its original packaging.

Return procedure for P4SMA150:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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