Taiwan Semiconductor Corporation P4KE62CA

Overview

P4KE62CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 62V nominal breakdown voltage, 400W peak pulse power rating at 10/1000μs, clamping voltage of 89V at 4.7A peak pulse current, and operates across –55°C to +175°C junction temperature range - deployed in automotive lighting control modules and industrial PLC I/O protection circuits.

For engineers reviewing the P4KE62CA datasheet, P4KE62CA pinout, P4KE62CA application, or P4KE62CA equivalent, key selection criteria include bidirectional clamping capability, DO-41 package compatibility, AEC-Q101 qualification status, low leakage (<1μA at 50.2V), and fast response time (<5ns for bidirectional transients).

Technical Context

The P4KE62CA is a silicon avalanche diode operating in reverse-biased breakdown mode to clamp transient overvoltages. Its bidirectional structure enables symmetrical clamping in both polarities without external polarity management, supporting ESD and EFT immunity per IEC 61000-4-2/4-4 standards.

It delivers 400W peak pulse power handling with a maximum clamping voltage of 89V at 4.7A IPPM under 10/1000μs waveform, and maintains <1μA reverse leakage at its 50.2V working stand-off voltage - enabling reliable protection of 48V and 60V system interfaces without false triggering during normal operation.

Key Specifications

Pinout & Package

Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with UL 94V-0 flammability rating and pure tin-plated leads compliant with J-STD-002 solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with P4KE62CA, SMAJ60CA offers superior thermal performance but demands layout revision, while 1.5KE62CA provides identical form factor with 3.75× higher peak power - making it suitable for extended surge events where DO-41 mechanical fit is mandatory.

Availability

P4KE62CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial CAN networks, smart meter power supplies, and 48V telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for P4KE62CA 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 P4KE series targets cost-sensitive, high-reliability surge protection applications - engineered for AEC-Q101 compliance, wide temperature operation, and consistent clamping performance across production lots.

FAQ

What does the 'CA' suffix indicate in P4KE62CA?

The 'CA' suffix in P4KE62CA denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage clamping in both polarities, unlike unidirectional variants (e.g., P4KE62A). This eliminates the need for polarity-aware placement and supports AC-coupled or floating signal line protection. The P4KE62CA achieves this using an integrated back-to-back diode structure housed in the same DO-41 package as its unidirectional counterparts.

Is P4KE62CA AEC-Q101 qualified?

Yes, P4KE62CA is AEC-Q101 qualified when ordered with the 'H' suffix (e.g., P4KE62CAH), as confirmed in Taiwan Semiconductor's ordering information. The base P4KE62CA part meets all electrical and mechanical specifications of the AEC-Q101 standard, including temperature cycling, highly accelerated life testing (HALT), and ESD robustness - but formal qualification documentation applies only to the 'H' variant. For automotive designs requiring certified qualification, specify P4KE62CAH.

What is the maximum clamping voltage of P4KE62CA and under what test condition?

The maximum clamping voltage of P4KE62CA is 89 V, measured at a peak pulse current (IPPM) of 4.7 A under the standardized 10/1000 μs double-exponential surge waveform. This value is guaranteed across the full operating temperature range (–55°C to +175°C) and defines the upper voltage limit imposed on protected circuitry during a 400W transient event. It is derived directly from the device's avalanche characteristics and package parasitics.

Can P4KE62CA be used in place of a unidirectional TVS like P4KE62A?

No - P4KE62CA cannot be directly substituted for P4KE62A without circuit review, because P4KE62CA is bidirectional while P4KE62A is unidirectional. Using P4KE62CA in a unidirectional application may cause unintended conduction during normal forward bias conditions. Conversely, replacing P4KE62CA with P4KE62A in a bidirectional path leaves one polarity unprotected. Always verify signal polarity, grounding scheme, and clamping symmetry requirements before interchanging P4KE62CA and P4KE62A.

What is the junction capacitance of P4KE62CA and how does it affect high-speed signal lines?

P4KE62CA exhibits a typical junction capacitance of approximately 100 pF at 0 V bias (measured at 1 MHz), decreasing to ~50 pF at its 50.2 V working stand-off voltage. This capacitance makes it unsuitable for direct placement on high-speed digital lines (e.g., USB 2.0, CAN FD, or Ethernet) where sub-5pF loading is required. Instead, it is optimized for lower-frequency power rail and control signal protection - such as 12V/24V automotive bus lines or 48V telecom DC inputs - where capacitive loading has negligible impact on signal integrity.