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

Taiwan Semiconductor Corporation P4SMA62A

Name: P4SMA62A
Brand: Taiwan Semiconductor Corporation
SKU: P4SMA62A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: P4SMA62A

Manufacturer:: Taiwan Semiconductor Corporation

Category:: TVS Diodes

Package:: DO-214AC, SMA

Datasheet:: P4SMA62A.pdf

Description:: TVS DIODE 53VWM 85VC DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:6,972

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Product details

Overview

P4SMA62A 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 53.0 V working stand-off voltage, 58.9–65.1 V breakdown voltage at 1 mA test current, 85.0 V maximum clamping voltage at 5.0 A peak pulse current, and 400 W peak pulse power rating under 10/1000 µs waveform - deployed in switching mode power supplies and on-board DC/DC converters.

For engineers reviewing the P4SMA62A datasheet, P4SMA62A pinout, P4SMA62A application, or P4SMA62A equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, unidirectional polarity marking, DO-214AC (SMA) package compatibility with automated placement, and <1 µA reverse leakage at V_WM, critical for low-power and automotive-grade power rail protection.

Technical Context

The P4SMA62A operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1.0 ps) to transient events while maintaining stable breakdown characteristics across -55°C to +150°C junction temperature range. Its unidirectional configuration provides forward conduction capability up to 3.5 V at 25 A surge current and supports bidirectional use only when paired with complementary devices.

Designed per ANSI/IEEE C62.35, it delivers repeatable clamping behavior under standardized 10/1000 µs surge waveforms and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - confirming suitability for high-reliability reflow assembly without preconditioning.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	53.0 V - Maximum continuous reverse operating voltage before significant leakage; ensures safe operation in 48 V nominal systems.
V_BR min/max	58.9 V / 65.1 V at 1 mA - Tight breakdown tolerance enables predictable turn-on during transients.
V_C@I_PPM	85.0 V at 5.0 A - Clamping voltage defines worst-case voltage seen by protected ICs during 10/1000 µs surge.
P_PPM	400 W - Peak pulse power handling capacity per single non-repetitive event per IEC 61000-4-5.
I_R@V_WM	<1 µA - Ultra-low leakage preserves efficiency in battery-backed or always-on circuits.
T_J max	+150 °C - Enables deployment in under-hood automotive or high-temperature industrial environments.

Pinout & Package

Package: DO-214AC (SMA), surface-mount, single-diode unidirectional configuration with cathode band marking. Matte tin-plated leads compliant with J-STD-002 solderability and UL 94V-0 molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry / transient return path	Connected to protected circuit ground or low-side reference; conducts during positive transients when cathode is biased higher.
Cathode	Reverse-biased terminal / clamping node	Connected to line being protected (e.g., 48 V rail); avalanche conduction begins when voltage exceeds V_BR.

Key Features

Feature	Design Value
Glass passivated junction	Ensures long-term stability of breakdown voltage and leakage under thermal cycling and humidity stress.
Fast response time <1.0 ps	Clamps ESD and lightning-induced surges before sensitive downstream components experience overstress.
ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b)	Validated for automotive load-dump and supply-line transient immunity without external filtering.
Moisture Sensitivity Level 1	Eliminates bake-out requirement prior to SMT reflow, reducing manufacturing cost and process complexity.

Applications

Switching Mode Power Supply (SMPS)	On-board DC/DC Converter
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side synchronous rectifiers against flyback spikes and cross-talk transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed across input/output rails to limit voltage excursions during switching transitions. Use Value: Prevents gate oxide rupture and latch-up in PWM controllers by limiting transient overshoot to ≤85.0 V at 5.0 A surge.	Use Scenario: Input rail protection in point-of-load (POL) converters powering FPGAs, ASICs, or microcontrollers in telecom base stations. IC Role / Device Role / Timing Role: Standoff protector on 12 V or 48 V input bus, absorbing coupled noise from adjacent digital switching stages. Use Value: Maintains system uptime by suppressing repetitive 10/1000 µs surges up to 400 W without degradation over >10,000 events.
Lighting Application	Adapters
Use Scenario: Overvoltage suppression in LED driver modules subjected to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Primary-side transient clamp on constant-current output stage, referenced to isolated ground. Use Value: Enables compliance with IEC 61347-1 surge immunity requirements using a single discrete component.	Use Scenario: Input-stage protection in universal-input AC/DC adapters exposed to mains-borne surges and EFT bursts. IC Role / Device Role / Timing Role: Secondary-side TVS on DC output connector to prevent damage during accidental short-circuit recovery. Use Value: Limits post-regulator voltage spike to ≤85.0 V during 1 A–5 A surge events, preserving USB-PD and legacy 5 V logic interfaces.

Switching Mode Power Supply (SMPS)

On-board DC/DC Converter

Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side synchronous rectifiers against flyback spikes and cross-talk transients.

IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed across input/output rails to limit voltage excursions during switching transitions.

Use Value: Prevents gate oxide rupture and latch-up in PWM controllers by limiting transient overshoot to ≤85.0 V at 5.0 A surge.

Use Scenario: Input rail protection in point-of-load (POL) converters powering FPGAs, ASICs, or microcontrollers in telecom base stations.

IC Role / Device Role / Timing Role: Standoff protector on 12 V or 48 V input bus, absorbing coupled noise from adjacent digital switching stages.

Use Value: Maintains system uptime by suppressing repetitive 10/1000 µs surges up to 400 W without degradation over >10,000 events.

Lighting Application

Adapters

Use Scenario: Overvoltage suppression in LED driver modules subjected to hot-plug and cable discharge events.

IC Role / Device Role / Timing Role: Primary-side transient clamp on constant-current output stage, referenced to isolated ground.

Use Value: Enables compliance with IEC 61347-1 surge immunity requirements using a single discrete component.

Use Scenario: Input-stage protection in universal-input AC/DC adapters exposed to mains-borne surges and EFT bursts.

IC Role / Device Role / Timing Role: Secondary-side TVS on DC output connector to prevent damage during accidental short-circuit recovery.

Use Value: Limits post-regulator voltage spike to ≤85.0 V during 1 A–5 A surge events, preserving USB-PD and legacy 5 V logic interfaces.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ64A (Bourns)	DO-214AA (SMB) package; 64 V V_WM; 100 A I_PPM (10/1000 µs); same 400 W rating	Larger footprint; higher thermal mass; lower mounting density	Select SMBJ64A only if board layout accommodates SMB and higher surge margin is required beyond 5.0 A.
1.5SMC68A (ON Semiconductor)	DO-214AB (SMC) package; 68 V V_WM; 65.8–72.2 V V_BR; 1000 W rating	Higher power rating but larger size; not drop-in compatible with SMA pad layout	Choose 1.5SMC68A when system-level testing requires >400 W clamping energy absorption and PCB space permits SMC footprint.

Compared with SMBJ64A and 1.5SMC68A, the P4SMA62A offers optimal balance of compact DO-214AC (SMA) packaging, precise 53.0 V standoff, and verified ISO 7637-2 compliance - making it preferred for space-constrained automotive and industrial DC/DC designs where layout reuse and thermal profile are critical.

Availability

P4SMA62A is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply with full traceability and lifecycle management.

Supply support for P4SMA62A 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 P4SMA62A belongs to TSC's P4SMAx series of surface-mount TVS diodes engineered specifically for high-reliability transient suppression in automotive ECUs, power adapters, and LED drivers - emphasizing low leakage, tight V_BR tolerance, and AEC-Q200-aligned reliability.

FAQ

What is the maximum clamping voltage of the P4SMA62A under standard surge conditions?

The P4SMA62A has a maximum clamping voltage (V_C) of 85.0 V when subjected to a 10/1000 µs surge waveform at its rated peak pulse current of 5.0 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. The P4SMA62A maintains this clamping performance across its full operating temperature range.

Is the P4SMA62A suitable for automotive applications requiring ISO 7637-2 compliance?

Yes, the P4SMA62A is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements, making it suitable for automotive electronic control units, body electronics, and infotainment power supplies. Its glass-passivated junction, -55°C to +150°C operating range, and MSL Level 1 moisture rating align with AEC-Q200 stress test profiles. The P4SMA62A delivers consistent clamping behavior under repeated load-dump and supply interruption transients.

What is the polarity configuration of the P4SMA62A and how is it marked on the device?

The P4SMA62A is a unidirectional TVS diode with cathode indicated by a distinct band on the DO-214AC (SMA) package body. This marking aligns with industry-standard polarity conventions: cathode connects to the line being protected (e.g., 48 V rail), and anode connects to ground or return path. Bidirectional operation is not supported by the P4SMA62A alone; for symmetrical protection, a complementary CA-suffix part or dual-diode array must be used.

How does the P4SMA62A compare to the P4SMA62 in terms of breakdown voltage tolerance?

The P4SMA62A has a tighter breakdown voltage tolerance than the P4SMA62: 58.9–65.1 V (min/max) at 1 mA test current versus 55.8–68.2 V for the P4SMA62. This ±5.5% spread (vs. ±11.2% for P4SMA62) improves design margin in precision-clamp applications such as FPGA core rail protection. Both share identical package, power rating, and thermal specifications - the P4SMA62A is the preferred choice where tighter V_BR control is required.

What is the maximum reverse leakage current specification for the P4SMA62A at its working voltage?

The P4SMA62A specifies a maximum reverse leakage current (I_R) of less than 1 µA when biased at its working stand-off voltage (V_WM) of 53.0 V and tested at 25°C. This ultra-low leakage minimizes standby power loss in always-on systems and prevents false triggering in high-impedance sensing nodes. The P4SMA62A maintains sub-µA leakage up to 125°C, supporting reliable operation in thermally demanding environments.

P4SMA62A 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):: 53V

Voltage - Breakdown (Min):: 58.9V

Voltage - Clamping (Max) @ Ipp:: 85V

Current - Peak Pulse (10/1000µs):: 5A

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)

P4SMA62A FAQ

1.How can I place an order for P4SMA62A through Aetrix?

Please submit a Request for Quotation (RFQ) for P4SMA62A 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 P4SMA62A reliable?

The price and inventory of P4SMA62A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA62A is usually 5 days.

3.What payment methods are accepted for P4SMA62A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA62A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for P4SMA62A?

P4SMA62A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your P4SMA62A 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 P4SMA62A?

For technical support, including P4SMA62A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA62A requirements.

6.How does Aetrix verify that P4SMA62A is sourced from the original manufacturer or authorized distributors?

All P4SMA62A 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 P4SMA62A meets industry standards.

7.What is the process for return or replacement of P4SMA62A?

All P4SMA62A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA62A, 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 P4SMA62A part is unused and in its original packaging.

Return procedure for P4SMA62A:

1.Submit a request within 90 days.

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

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