Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Taiwan Semiconductor Corporation P4SMA150H

Name: P4SMA150H
Brand: Taiwan Semiconductor Corporation
SKU: P4SMA150H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: P4SMA150H

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

Package:: DO-214AC, SMA

Datasheet:: P4SMA150H.pdf

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

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:9,379

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

P4SMA150H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 135–165V breakdown voltage (V_BR), and clamps to ≤215V at 1.9A (10/1000μs waveform). It delivers AEC-Q101 qualification and ISO 7637-2 compliance for automotive power line protection in DC/DC converters and SMPS.

For engineers reviewing the P4SMA150H datasheet, P4SMA150H pinout, P4SMA150H application, or P4SMA150H equivalent, key selection criteria include its 121V working stand-off voltage (V_WM), <1μA reverse leakage at V_WM, fast sub-1ps response, and robust 150°C junction temperature rating - critical for under-hood automotive and industrial power rail surge suppression.

Technical Context

The P4SMA150H employs a glass-passivated silicon junction optimized for high-energy transient clamping on unidirectional DC lines. Its electrical behavior follows IEEE C62.35 standards, with precise V_BR tolerance (±10% min/max), low temperature coefficient (0.108%/°C), and guaranteed clamping performance up to T_J = 150°C.

Designed for single-die unidirectional operation, it features a cathode-banded SMA package with matte tin-plated leads compliant to J-STD-002 solderability and JESD201 Class 2 whisker resistance. Moisture sensitivity is rated Level 1 per J-STD-020, enabling standard SMT reflow without dry-pack requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR @ I_T=1mA	135–165V - defines minimum/maximum voltage at which device enters avalanche conduction; ensures reliable turn-on across production lot and temperature
V_WM	121V - maximum continuous reverse operating voltage before significant leakage; sets safe DC bias margin for 120V nominal systems
V_C @ I_PPM=1.9A	≤215V - clamped voltage during 10/1000μs surge; determines protected circuit's peak stress level
P_PPM	400W - peak pulse power handling capability; supports ISO 7637-2 Pulse 1/2a/2b/3a/3b waveforms without failure
I_R @ V_WM	<1μA - ultra-low reverse leakage at stand-off voltage; minimizes standby power loss and avoids false triggering
T_J max	150°C - maximum junction temperature; enables operation in high-ambient environments like engine compartments
Package	DO-214AC (SMA) - industry-standard surface-mount outline with 0.060g mass and UL 94V-0 molding compound

Pinout & Package

DO-214AC (SMA) package: molded plastic case with axial leadform, cathode indicated by band; terminals are matte tin-plated for compatibility with Pb-free and SnPb soldering processes per J-STD-002.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current input / Surge return path	Connected to system ground or low-side reference; carries full surge current during clamping
Cathode (banded end)	Reverse-biased terminal / Clamping node	Connected to protected line (e.g., +12V rail); initiates avalanche when V_AK exceeds V_BR

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan
Glass passivated junction	Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives; improves surge lifetime
Fast response time <1ps	Clamps transients before downstream ICs experience overvoltage - critical for protecting CAN/LIN bus interfaces and MCU I/O
ISO 7637-2 compliance	Withstands standardized automotive load dump and switching surge waveforms (Pulse 1, 2a, 2b, 3a, 3b) without degradation
RoHS & halogen-free	Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU; suitable for green manufacturing and export compliance

Applications

Automotive Power Distribution	Industrial DC/DC Converters
Use Scenario: Protecting 12V/24V battery-fed circuits against load dump and alternator transients in body control modules and lighting ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 121V while remaining inert during normal operation. Use Value: Enables compliance with ISO 7637-2 Pulse 5a (load dump) by limiting peak rail voltage to ≤215V, preserving MCU and driver IC integrity.	Use Scenario: Safeguarding isolated 48V-to-12V buck converter outputs in telecom and industrial power supplies. IC Role / Device Role / Timing Role: Standoff-rated TVS on secondary-side output rail to absorb coupling-induced spikes from primary-side switching noise. Use Value: Provides 400W surge immunity without derating at 85°C ambient, supporting compact thermal design in enclosed power modules.
LED Driver Protection	Smart Meter Power Input
Use Scenario: Shielding constant-current LED drivers from inductive kickback and lightning-induced surges in streetlight applications. IC Role / Device Role / Timing Role: Primary-line TVS on input stage of offline LED driver ICs to prevent latch-up or gate oxide damage. Use Value: Sub-1ps response ensures clamping occurs before 100ns-level transients reach driver ICs, reducing field failure rates in outdoor deployments.	Use Scenario: Securing AC/DC adapter input to smart electricity meters exposed to grid disturbances and meter-reading pulses. IC Role / Device Role / Timing Role: First-stage transient suppressor on rectified DC bus to absorb 1kV/500A surges per IEC 61000-4-5 Level 3. Use Value: 121V V_WM allows direct placement after bridge rectifier without voltage divider, simplifying BOM and layout.

Automotive Power Distribution

Industrial DC/DC Converters

Use Scenario: Protecting 12V/24V battery-fed circuits against load dump and alternator transients in body control modules and lighting ECUs.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 121V while remaining inert during normal operation.

Use Value: Enables compliance with ISO 7637-2 Pulse 5a (load dump) by limiting peak rail voltage to ≤215V, preserving MCU and driver IC integrity.

Use Scenario: Safeguarding isolated 48V-to-12V buck converter outputs in telecom and industrial power supplies.

IC Role / Device Role / Timing Role: Standoff-rated TVS on secondary-side output rail to absorb coupling-induced spikes from primary-side switching noise.

Use Value: Provides 400W surge immunity without derating at 85°C ambient, supporting compact thermal design in enclosed power modules.

LED Driver Protection

Smart Meter Power Input

Use Scenario: Shielding constant-current LED drivers from inductive kickback and lightning-induced surges in streetlight applications.

IC Role / Device Role / Timing Role: Primary-line TVS on input stage of offline LED driver ICs to prevent latch-up or gate oxide damage.

Use Value: Sub-1ps response ensures clamping occurs before 100ns-level transients reach driver ICs, reducing field failure rates in outdoor deployments.

Use Scenario: Securing AC/DC adapter input to smart electricity meters exposed to grid disturbances and meter-reading pulses.

IC Role / Device Role / Timing Role: First-stage transient suppressor on rectified DC bus to absorb 1kV/500A surges per IEC 61000-4-5 Level 3.

Use Value: 121V V_WM allows direct placement after bridge rectifier without voltage divider, simplifying BOM and layout.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ150A	Same V_WM (121V), but SMB package (DO-214AA); 600W rating; bidirectional variant available	Higher power rating suits higher-energy surges; larger footprint may limit dense PCB layouts	Select SMBJ150A when >400W surge margin is required and board space permits larger package
1.5SMC150A	Same V_WM/V_BR range, but SMC package (DO-214AB); 1500W rating; higher thermal mass	Used in higher-power industrial supplies where sustained surge energy exceeds SMA capability	Choose 1.5SMC150A for legacy designs using SMC footprints or where IPC-7351-compliant thermal relief is needed

Compared with SMBJ150A and 1.5SMC150A, the P4SMA150H offers optimal balance of AEC-Q101 qualification, compact DO-214AC footprint, and verified ISO 7637-2 compliance - making it preferred for space-constrained automotive modules where 400W clamping suffices.

Availability

P4SMA150H is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC/DC converters, LED driver protection, and smart meter power input requiring stable component supply and full traceability.

Supply support for P4SMA150H 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 P4SMA150H belongs to TSC's AEC-Q101-qualified P4SMAxH series, engineered specifically for robust transient suppression in automotive and industrial power rails where reliability, small size, and standardized SMT compatibility are mandatory.

FAQ

What is the breakdown voltage range of the P4SMA150H?

The P4SMA150H has a specified breakdown voltage (V_BR) range of 135V to 165V at I_T = 1mA, measured per ANSI/IEEE C62.35. This ±10% tolerance ensures consistent clamping onset across temperature and production lots, directly supporting design margining for 120V nominal systems.

Is the P4SMA150H suitable for automotive applications?

Yes, the P4SMA150H is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms. Its DO-214AC package, 150°C T_J rating, and <1μA leakage at 121V make it appropriate for under-hood and body-control module power line protection.

What is the clamping voltage of the P4SMA150H under surge conditions?

The P4SMA150H clamps to a maximum of 215V at I_PPM = 1.9A using the 10/1000μs double-exponential waveform. This value is guaranteed across temperature and represents the peak voltage seen by downstream circuitry during standardized surge events.

Does the P4SMA150H have polarity marking, and how is it identified?

Yes, the P4SMA150H is unidirectional and marked with a cathode band on the DO-214AC (SMA) package body. The banded end corresponds to the cathode terminal, which must be connected to the protected line; the unmarked end is the anode, tied to ground or return path.

What packaging and reel quantity is offered for the P4SMA150H?

The P4SMA150H is supplied in tape-and-reel format with 7,500 units per reel, compatible with standard high-speed pick-and-place equipment. The DO-214AC (SMA) package meets J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements for automated assembly.

P4SMA150H 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:: -

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

P4SMA150H FAQ

1.How can I place an order for P4SMA150H through Aetrix?

Please submit a Request for Quotation (RFQ) for P4SMA150H 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 P4SMA150H reliable?

The price and inventory of P4SMA150H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA150H is usually 5 days.

3.What payment methods are accepted for P4SMA150H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for P4SMA150H?

P4SMA150H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your P4SMA150H 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 P4SMA150H?

For technical support, including P4SMA150H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150H requirements.

6.How does Aetrix verify that P4SMA150H is sourced from the original manufacturer or authorized distributors?

All P4SMA150H 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 P4SMA150H meets industry standards.

7.What is the process for return or replacement of P4SMA150H?

All P4SMA150H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150H, 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 P4SMA150H part is unused and in its original packaging.

Return procedure for P4SMA150H:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …