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

Taiwan Semiconductor Corporation P4SMA13A

Name: P4SMA13A
Brand: Taiwan Semiconductor Corporation
SKU: P4SMA13A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: P4SMA13A

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

Package:: DO-214AC, SMA

Datasheet:: P4SMA13A.pdf

Description:: TVS DIODE 11.1VWM 18.2VC DO214AC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

P4SMA13A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for overvoltage protection of DC power lines and signal paths. It features a 12.4–13.7 V breakdown voltage (V_BR), 11.1 V working stand-off voltage (V_WM), 18.2 V clamping voltage (V_C) at 23 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in SMPS input stages and DC/DC converter rails.

For engineers reviewing the P4SMA13A datasheet, P4SMA13A pinout, P4SMA13A application, or P4SMA13A equivalent, key selection criteria include its unidirectional polarity, 1 µA max reverse leakage at V_WM, <1 ps response time, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and suitability for automotive and industrial power rail protection where fast clamping and low leakage are critical.

Technical Context

The P4SMA13A operates as a unidirectional avalanche diode with glass-passivated junction, enabling stable breakdown behavior under repetitive surge conditions. Its clamping action begins at V_BR ≥12.4 V (tested at 1.0 mA), limiting transient voltages to ≤18.2 V at 23 A (10/1000 µs), while maintaining V_WM = 11.1 V to avoid false triggering during normal operation.

Thermal performance is defined by a 150 °C maximum junction temperature and derating above 25 °C ambient per Fig.2. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, supporting lead-free reflow assembly without preconditioning.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR @ I_T=1.0 mA	12.4–13.7 V: Ensures reliable avalanche initiation without premature conduction during nominal 11.1 V DC operation
V_WM	11.1 V: Maximum continuous reverse voltage before leakage exceeds 1 µA - sets safe operating margin below V_BR
V_C @ I_PPM=23 A	18.2 V: Clamped voltage during 400 W transient - limits downstream IC stress to sub-19 V during ISO 7637-2 pulses
I_R @ V_WM	≤1 µA: Ultra-low leakage preserves efficiency in battery-backed or high-impedance sensing circuits
P_PPM	400 W (10/1000 µs): Sustains single-event surges up to 23 A without degradation - validated per REA-defined waveform
T_J_MAX	150 °C: Enables operation in under-hood automotive or enclosed industrial enclosures without forced cooling
Package	DO-214AC (SMA): Surface-mount footprint compatible with automated placement; 0.060 g mass supports vibration-resistant mounting

Pinout & Package

DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 flammability rating, and J-STD-002 solderability compliance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry / Surge return path	Connected to protected line's low-side or ground reference; completes clamping loop during positive transients
Cathode	Reverse-biased terminal / Clamping node	Connected to protected line's high-side (e.g., +12 V rail); conducts avalanche current when V_AK > V_BR

Key Features

Feature	Design Value
Glass-passivated junction	Stable V_BR tolerance (±5% for P4SMA13A) and long-term reliability under thermal cycling
Fast response time	<1.0 ps: Limits voltage overshoot before protection activates - critical for protecting fast-switching MOSFET gates
ISO 7637-2 compliance	Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - required for automotive ECUs
Moisture sensitivity level 1	No floor life limitation or baking required prior to reflow - reduces manufacturing overhead and handling risk
Halogen-free construction	Complies with IEC 61249-2-21 - meets RoHS and environmental requirements for export-grade industrial equipment

Applications

Switching Mode Power Supply (SMPS)	On-board DC/DC Converter
Use Scenario: Input rectifier stage of 12 V input SMPS subjected to load dump and line-induced surges per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed across bulk capacitor to clamp transients before they reach PWM controller and primary-side MOSFET. Use Value: Limits peak voltage to 18.2 V during 23 A surges, preventing overvoltage failure of 20 V-rated controllers and reducing need for oversized input capacitors.	Use Scenario: 5 V output rail of isolated 48 V-to-5 V DC/DC module in telecom base station power shelf. IC Role / Device Role / Timing Role: Secondary-side TVS on regulated output to absorb reflected transients from primary-side switching noise and hot-swap events. Use Value: Maintains 11.1 V stand-off while clamping to 18.2 V, ensuring downstream logic remains within 5 V ±10% spec during 400 W surges.
Lighting Application	Adapters
Use Scenario: LED driver input in outdoor streetlight exposed to lightning-induced surges on AC mains feed. IC Role / Device Role / Timing Role: First-line protection after bridge rectifier, shunting surge energy before it reaches PFC controller and LED current regulator. Use Value: 400 W rating handles multi-kV induced transients; 1 µA leakage avoids standby power penalty in energy-efficient designs.	Use Scenario: USB-C PD adapter secondary-side 20 V output rail subject to ESD and cable-connect transients. IC Role / Device Role / Timing Role: Output-side TVS between VBUS and GND to protect USB PD controller and load switch during plug-in events. Use Value: 18.2 V clamping ensures 20 V-rated PD ICs remain within absolute maximum ratings; DO-214AC footprint fits compact adapter PCB layouts.

Switching Mode Power Supply (SMPS)

On-board DC/DC Converter

Use Scenario: Input rectifier stage of 12 V input SMPS subjected to load dump and line-induced surges per ISO 7637-2.

IC Role / Device Role / Timing Role: Unidirectional TVS placed across bulk capacitor to clamp transients before they reach PWM controller and primary-side MOSFET.

Use Value: Limits peak voltage to 18.2 V during 23 A surges, preventing overvoltage failure of 20 V-rated controllers and reducing need for oversized input capacitors.

Use Scenario: 5 V output rail of isolated 48 V-to-5 V DC/DC module in telecom base station power shelf.

IC Role / Device Role / Timing Role: Secondary-side TVS on regulated output to absorb reflected transients from primary-side switching noise and hot-swap events.

Use Value: Maintains 11.1 V stand-off while clamping to 18.2 V, ensuring downstream logic remains within 5 V ±10% spec during 400 W surges.

Lighting Application

Adapters

Use Scenario: LED driver input in outdoor streetlight exposed to lightning-induced surges on AC mains feed.

IC Role / Device Role / Timing Role: First-line protection after bridge rectifier, shunting surge energy before it reaches PFC controller and LED current regulator.

Use Value: 400 W rating handles multi-kV induced transients; 1 µA leakage avoids standby power penalty in energy-efficient designs.

Use Scenario: USB-C PD adapter secondary-side 20 V output rail subject to ESD and cable-connect transients.

IC Role / Device Role / Timing Role: Output-side TVS between VBUS and GND to protect USB PD controller and load switch during plug-in events.

Use Value: 18.2 V clamping ensures 20 V-rated PD ICs remain within absolute maximum ratings; DO-214AC footprint fits compact adapter PCB layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ13A (Bourns)	Same DO-214AA package; 13.3–14.7 V V_BR, 11.2 V V_WM, 20.9 V V_C @ 19.1 A - higher clamping voltage, lower peak current rating	Higher V_C reduces margin for 15 V-rated loads; better suited for lower-energy surges where board space favors SMB over SMA	Select SMBJ13A only if layout uses DO-214AA pads and system-level testing confirms 20.9 V clamping is acceptable
1.5SMC13A (ON Semiconductor)	DO-214AB (SMC) package; 12.4–13.7 V V_BR, 11.1 V V_WM, 19.9 V V_C @ 20.1 A - identical electrical specs but larger 7.11 × 6.22 mm body	Larger footprint increases PCB area use; higher thermal mass improves surge endurance but limits high-density designs	Choose 1.5SMC13A when thermal robustness outweighs size constraints - e.g., industrial motor drives with frequent surge exposure

Compared with SMBJ13A and 1.5SMC13A, the P4SMA13A offers optimal balance of low clamping (18.2 V), compact DO-214AC footprint (4.57 × 2.79 mm), and 400 W rating - making it preferred for space-constrained automotive and consumer power adapters where precise voltage limiting is critical.

Availability

P4SMA13A is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply, automotive-grade surge immunity, and RoHS-compliant manufacturing.

Supply support for P4SMA13A 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial, automotive, and consumer markets.

The P4SMA series belongs to TSC's surface-mount TVS portfolio engineered specifically for high-reliability DC rail protection - emphasizing fast response, low leakage, and AEC-Q200-aligned robustness in compact packages.

FAQ

What is the polarity configuration of the P4SMA13A?

The P4SMA13A is a unidirectional TVS diode, with cathode marked by a band on the DO-214AC package. It conducts only during reverse-bias overvoltage events - i.e., when the cathode voltage exceeds the anode by ≥12.4 V - and blocks forward current like a standard rectifier diode. This configuration makes P4SMA13A suitable for protecting positive DC rails where polarity is fixed and reverse conduction must be prevented.

Does the P4SMA13A meet automotive surge standards?

Yes, the P4SMA13A meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), as confirmed in the official Taiwan Semiconductor datasheet (Version S2102). Its 400 W peak pulse power rating and 18.2 V clamping voltage at 23 A ensure compliance with transient immunity levels specified for automotive electronic control units, including engine control modules and body electronics.

What is the maximum junction temperature rating for the P4SMA13A?

The P4SMA13A has a maximum junction temperature (T_J_MAX) of +150 °C, as specified in the Absolute Maximum Ratings table. This allows reliable operation in under-hood automotive environments, enclosed industrial power supplies, and high-ambient lighting fixtures. Derating of peak pulse power begins above 25 °C ambient per the Pulse Derating Curve (Fig.2), with ~50% power capability retained at 100 °C ambient.

How does the P4SMA13A differ from the P4SMA13 (non-A) variant?

The P4SMA13A features tighter V_BR tolerance (12.4–13.7 V, ±5%) versus P4SMA13 (11.7–14.3 V, ±10%), resulting in more predictable clamping onset and reduced design margin uncertainty. Both share identical package (DO-214AC), power rating (400 W), and clamping voltage (19.0 V for P4SMA13 vs. 18.2 V for P4SMA13A), but P4SMA13A's lower V_C provides superior protection for 15 V-rated downstream components. The "A" suffix denotes the tighter-tolerance grade.

Is the P4SMA13A halogen-free and RoHS compliant?

Yes, the P4SMA13A is both RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the Features section of the Taiwan Semiconductor datasheet. The molding compound contains no brominated flame retardants or chlorine-based additives, and all homogeneous materials meet EU Directive 2011/65/EU restrictions on hazardous substances - supporting environmentally regulated industrial and medical equipment designs.

P4SMA13A 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):: 11.1V

Voltage - Breakdown (Min):: 12.4V

Voltage - Clamping (Max) @ Ipp:: 18.2V

Current - Peak Pulse (10/1000µs):: 23A

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)

P4SMA13A FAQ

1.How can I place an order for P4SMA13A through Aetrix?

Please submit a Request for Quotation (RFQ) for P4SMA13A 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 P4SMA13A reliable?

The price and inventory of P4SMA13A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA13A is usually 5 days.

3.What payment methods are accepted for P4SMA13A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA13A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for P4SMA13A?

P4SMA13A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your P4SMA13A 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 P4SMA13A?

For technical support, including P4SMA13A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA13A requirements.

6.How does Aetrix verify that P4SMA13A is sourced from the original manufacturer or authorized distributors?

All P4SMA13A 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 P4SMA13A meets industry standards.

7.What is the process for return or replacement of P4SMA13A?

All P4SMA13A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA13A, 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 P4SMA13A part is unused and in its original packaging.

Return procedure for P4SMA13A:

1.Submit a request within 90 days.

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

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