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

Taiwan Semiconductor Corporation P4SMA160

Name: P4SMA160
Brand: Taiwan Semiconductor Corporation
SKU: P4SMA160
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: P4SMA160

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

Package:: DO-214AC, SMA

Datasheet:: P4SMA160.pdf

Description:: 400W, 160V, 5%, UNIDIRECTIONAL,

Quantity:: RFQ Add To RFQ list

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Inventory:9,389

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Product details

Overview

P4SMA160 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 130 V working stand-off voltage (V_WM), 144–176 V breakdown voltage (V_BR), 230 V maximum clamping voltage (V_C) at 1.8 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in switching mode power supplies and on-board DC/DC converters.

For engineers reviewing the P4SMA160 datasheet, P4SMA160 pinout, P4SMA160 application, or P4SMA160 equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, junction temperature derating above 25°C, DO-214AC (SMA) package compatibility with automated SMT placement, and leakage current ≤1 µA at V_WM.

Technical Context

The P4SMA160 operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response (<1.0 ps) and stable breakdown characteristics. Its single-die DO-214AC construction supports bidirectional variants only when marked with "C" or "CA" suffixes - this part lacks such marking and is strictly unidirectional.

It complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, enabling reflow compatibility without baking. Thermal derating follows Fig.2: peak power drops linearly from 400 W at 25°C to ~240 W at 100°C ambient, with maximum junction temperature limited to 150°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	130 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 120 V nominal systems.
V_BR @ I_T=1 mA	144–176 V - Measured breakdown range ensures reliable triggering during transients while avoiding false trips at rated voltage.
V_C @ I_PPM=1.8 A	230 V - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure level.
P_PPM	400 W - Peak pulse power handling per standard waveform; enables protection against automotive load dump and inductive switching spikes.
I_R @ V_WM	≤1 µA - Ultra-low reverse leakage preserves efficiency in high-impedance sensing or standby circuits.
T_J max	150 °C - Maximum junction temperature; sets thermal design boundary for PCB copper area and airflow requirements.
Package	DO-214AC (SMA) - Standard surface-mount outline with cathode band marking; compatible with JEDEC MS-013 and IPC-7351B footprint.

Pinout & Package

DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band. Weight ≈0.060 g. Meets UL 94V-0 flammability rating and J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal	Connected to lower-potential side of protected line (e.g., GND or return path); conducts during forward surge events.
Cathode	Reverse-biased clamping terminal	Connected to higher-potential side (e.g., +120 V rail); avalanches into low-impedance state when V_AK exceeds V_BR.

Key Features

Feature	Design Value
Glass passivated junction	Ensures stable V_BR tolerance and long-term reliability under thermal cycling and humidity stress.
Fast response time <1.0 ps	Clamps ESD and lightning-induced transients before downstream ICs experience damaging voltage overshoot.
ISO 7637-2 compliance	Validated for automotive electrical system immunity testing (Pulse 1/2a/2b/3a/3b), supporting vehicle-grade designs.
Moisture sensitivity level 1	Allows standard SMT reflow without pre-baking, reducing manufacturing complexity and cost.
RoHS & halogen-free	Meets IEC 61249-2-21 and EU RoHS directives for environmentally compliant electronics assembly.

Applications

Switching Mode Power Supply (SMPS)	On-board DC/DC Converter
Use Scenario: Protects primary-side MOSFET gate drivers and secondary-side rectifiers from turn-off voltage spikes and transformer leakage energy. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input bulk capacitor or output rectifier to clamp inductive kickback and line surges. Use Value: Limits transient voltage to ≤230 V, preventing gate oxide rupture in 200 V-rated FETs and ensuring sustained operation under 400 W surge conditions.	Use Scenario: Shields point-of-load regulators and controller ICs in industrial PLCs and telecom base stations from board-level coupling transients. IC Role / Device Role / Timing Role: Mounted at DC/DC input filter stage to absorb coupled noise from adjacent switching rails and backplane transients. Use Value: Maintains ≤1 µA leakage at 130 V stand-off, minimizing standby power loss while delivering sub-nanosecond response to fast-rising edge transients.
Lighting Application	Adapters
Use Scenario: Safeguards LED driver ICs and MOSFETs in outdoor streetlight ballasts exposed to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Installed across bridge rectifier output to suppress differential-mode surges before bulk capacitor filtering. Use Value: Withstands 400 W peak power per 10/1000 µs pulse and operates reliably from –55°C to +150°C, matching outdoor thermal envelope requirements.	Use Scenario: Protects USB-C PD and legacy AC/DC adapter outputs against hot-plug transients and cable discharge events. IC Role / Device Role / Timing Role: Placed at secondary-side output to clamp reverse polarity connection spikes and load-dump reflections. Use Value: Delivers 230 V clamping at 1.8 A impulse current, limiting output rail excursion below 240 V - within safe margin for 5–20 V logic-supply ICs.

Switching Mode Power Supply (SMPS)

On-board DC/DC Converter

Use Scenario: Protects primary-side MOSFET gate drivers and secondary-side rectifiers from turn-off voltage spikes and transformer leakage energy.

IC Role / Device Role / Timing Role: Unidirectional TVS placed across input bulk capacitor or output rectifier to clamp inductive kickback and line surges.

Use Value: Limits transient voltage to ≤230 V, preventing gate oxide rupture in 200 V-rated FETs and ensuring sustained operation under 400 W surge conditions.

Use Scenario: Shields point-of-load regulators and controller ICs in industrial PLCs and telecom base stations from board-level coupling transients.

IC Role / Device Role / Timing Role: Mounted at DC/DC input filter stage to absorb coupled noise from adjacent switching rails and backplane transients.

Use Value: Maintains ≤1 µA leakage at 130 V stand-off, minimizing standby power loss while delivering sub-nanosecond response to fast-rising edge transients.

Lighting Application

Adapters

Use Scenario: Safeguards LED driver ICs and MOSFETs in outdoor streetlight ballasts exposed to lightning-induced surges on AC mains input.

IC Role / Device Role / Timing Role: Installed across bridge rectifier output to suppress differential-mode surges before bulk capacitor filtering.

Use Value: Withstands 400 W peak power per 10/1000 µs pulse and operates reliably from –55°C to +150°C, matching outdoor thermal envelope requirements.

Use Scenario: Protects USB-C PD and legacy AC/DC adapter outputs against hot-plug transients and cable discharge events.

IC Role / Device Role / Timing Role: Placed at secondary-side output to clamp reverse polarity connection spikes and load-dump reflections.

Use Value: Delivers 230 V clamping at 1.8 A impulse current, limiting output rail excursion below 240 V - within safe margin for 5–20 V logic-supply ICs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ160A	DO-214AA (SMB) package; 160 V V_WM, 178–197 V V_BR, 259 V V_C @ 1.5 A, same 400 W rating	Larger footprint (4.58 × 3.94 mm vs. SMA's 4.29 × 2.79 mm); higher clamping voltage reduces protected margin	Select SMBJ160A only if board layout accommodates larger pad geometry and higher V_C is acceptable.
1.5SMC160A	DO-214AB (SMC) package; 160 V V_WM, 178–197 V V_BR, 259 V V_C @ 1.5 A, 1500 W rating	Substantially larger (7.11 × 6.22 mm); over-specified power rating increases cost and footprint unnecessarily for 400 W use cases	Choose 1.5SMC160A only when system-level surge testing requires >400 W capability or higher I_PPM margin.

Compared with SMBJ160A and 1.5SMC160A, the P4SMA160 offers optimal balance of compact DO-214AC footprint, precise 130 V V_WM, and verified 230 V clamping - making it ideal for space-constrained, cost-sensitive 120–160 V DC rail protection where exact surge energy is known and bounded.

Availability

P4SMA160 is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply, consistent parametric performance, and full traceability through production cycles.

Supply support for P4SMA160 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs - serving industrial, automotive, and consumer markets since 1979.

The P4SMA series belongs to TSC's surface-mount TVS platform engineered for high-reliability transient suppression in harsh environments, with emphasis on automotive EMC compliance, automated assembly readiness, and thermal stability across extended temperature ranges.

FAQ

What is the polarity configuration of the P4SMA160?

The P4SMA160 is a unidirectional TVS diode, with polarity defined by a cathode band on the DO-214AC (SMA) package body. When installed, the cathode connects to the higher-potential side of the protected line (e.g., positive rail), and the anode connects to the lower-potential side (e.g., ground or return). This configuration ensures clamping only during reverse overvoltage events - critical for protecting sensitive downstream components in DC power systems. The P4SMA160 does not support bidirectional operation unless explicitly marked with "C" or "CA" suffixes, which this part lacks.

Does the P4SMA160 meet automotive surge immunity standards?

Yes, the P4SMA160 meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b waveforms - covering common automotive transient threats including load dump, battery reversal, and inductive switching. Its 400 W peak pulse power rating, 230 V clamping voltage at 1.8 A, and stable breakdown behavior across –55°C to +150°C junction temperature ensure robust performance in vehicle ECUs, body control modules, and infotainment power supplies. The P4SMA160 is widely used in Tier-1 automotive subsystems where certified transient immunity is mandatory.

What is the maximum clamping voltage of the P4SMA160 under standard test conditions?

The maximum clamping voltage (V_C) of the P4SMA160 is 230 V, measured at a peak pulse current (I_PPM) of 1.8 A using the standardized 10/1000 µs double-exponential waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events and is guaranteed across all units per datasheet specifications. Engineers must verify that downstream components have sufficient voltage margin above 230 V - for example, selecting 250 V or higher rated capacitors and MOSFETs - to ensure reliable operation when the P4SMA160 activates.

How does the P4SMA160 compare to the P4SMA160A variant?

The P4SMA160A differs from the P4SMA160 in tighter breakdown voltage tolerance: P4SMA160 specifies V_BR = 144–176 V (±10%), while P4SMA160A narrows this to 152–168 V (±5%). Both share identical V_WM (130 V / 136 V), V_C (230 V / 219 V), and 400 W power rating. The P4SMA160A's lower clamping voltage (219 V) provides enhanced protection margin but at slightly higher cost. For designs where precise V_BR alignment is non-critical - such as general-purpose DC rail clamping - the P4SMA160 remains the more economical choice without sacrificing core protection capability.

Is the P4SMA160 suitable for reflow soldering without preconditioning?

Yes, the P4SMA160 has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it can be subjected to standard lead-free reflow profiles (e.g., JEDEC J-STD-020D peak of 260°C) without prior baking or dry-pack handling. Its DO-214AC (SMA) package uses molding compound rated UL 94V-0 and matte tin-plated leads compliant with J-STD-002, ensuring reliable wetting and intermetallic formation. This eliminates moisture-related popcorning risk and simplifies SMT line integration - a key advantage for high-volume manufacturing of power adapters, LED drivers, and industrial power modules using the P4SMA160.

P4SMA160 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):: 130V

Voltage - Breakdown (Min):: 144V

Voltage - Clamping (Max) @ Ipp:: 230V

Current - Peak Pulse (10/1000µs):: 1.8A

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)

P4SMA160 FAQ

1.How can I place an order for P4SMA160 through Aetrix?

Please submit a Request for Quotation (RFQ) for P4SMA160 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 P4SMA160 reliable?

The price and inventory of P4SMA160 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA160 is usually 5 days.

3.What payment methods are accepted for P4SMA160?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA160 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for P4SMA160?

P4SMA160 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your P4SMA160 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 P4SMA160?

For technical support, including P4SMA160 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA160 requirements.

6.How does Aetrix verify that P4SMA160 is sourced from the original manufacturer or authorized distributors?

All P4SMA160 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 P4SMA160 meets industry standards.

7.What is the process for return or replacement of P4SMA160?

All P4SMA160 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA160, 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 P4SMA160 part is unused and in its original packaging.

Return procedure for P4SMA160:

1.Submit a request within 90 days.

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

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