Taiwan Semiconductor Corporation P6KE350A A0G

Overview

P6KE350A A0G from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage clamping in power supply input stages and industrial control interfaces. It features a nominal breakdown voltage of 350 V, maximum clamping voltage of 482 V at 1.3 A peak surge current, and stand-off voltage of 300 V - enabling robust protection of 277–480 VAC systems against lightning-induced surges and inductive switching transients.

For engineers reviewing the P6KE350A A0G datasheet, P6KE350A A0G pinout, P6KE350A A0G application, or P6KE350A A0G equivalent, key selection criteria include its DO-204AC (DO-15) axial package, 175°C junction rating, low dynamic impedance, sub-1 ps response time, and compliance with UL 94V-0 and RoHS/halogen-free standards.

Technical Context

The P6KE350A A0G operates as a unidirectional avalanche diode with tightly controlled breakdown characteristics: V_BR min/max = 332–368 V at 1 mA test current, ensuring precise clamping onset above system operating voltage. Its 600 W peak pulse power rating is specified per 10/1000 µs waveform, and thermal derating follows a linear curve down to zero power at 175°C ambient.

With typical reverse leakage <1 µA at 300 V (V_WM) and maximum clamping voltage of 482 V at I_PP = 1.3 A, it delivers low-voltage overshoot during surge events while maintaining high impedance under normal operation. The device uses a single-die construction in a DO-204AC package with pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Key Specifications

Pinout & Package

DO-204AC (DO-15) axial package with cathode band marking on one end. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Polarity is unidirectional: anode (unmarked end), cathode (banded end).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ350A and 1.5KE350A, the P6KE350A A0G offers optimal balance of 600 W surge capability, DO-204AC through-hole reliability, and cost-effective protection for industrial 277–480 VAC systems without over-engineering.

Availability

P6KE350A A0G is available at Aetrix Electronics and suitable for industrial motor drives, smart grid meters, commercial LED lighting ballasts, and building automation controllers requiring stable component supply and long-term manufacturability.

Supply support for P6KE350A A0G 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 power management, protection, and signal conditioning devices.

The P6KE series belongs to TSC's industrial-grade TVS portfolio, engineered specifically for high-reliability overvoltage protection in harsh electrical environments including utility infrastructure, factory automation, and outdoor lighting systems.

FAQ

What is the maximum clamping voltage of the P6KE350A A0G under surge conditions?

The P6KE350A A0G has a maximum clamping voltage (V_C) of 482 V when subjected to a 1.3 A peak pulse current (I_PP) with a 10/1000 µs waveform. This value is guaranteed per the datasheet's Electrical Specifications table and defines the upper voltage limit imposed on protected circuitry during transient events. The P6KE350A A0G achieves this clamping performance while maintaining low dynamic impedance and thermal stability up to 175°C junction temperature.

Is the P6KE350A A0G unidirectional or bidirectional?

The P6KE350A A0G is a unidirectional transient voltage suppressor, indicated by the absence of "C" or "CA" suffix and confirmed by its single cathode band marking and asymmetric electrical specifications (e.g., forward surge rating applies only to unidirectional types). It conducts only during reverse-biased overvoltage events - making it ideal for DC bus or rectified AC line protection where polarity is fixed. The P6KE350A A0G does not provide symmetrical clamping in both directions.

What packaging format does the P6KE350A A0G ship in?

The P6KE350A A0G ships in an ammo box containing 1,500 units, as specified in the Ordering Information section of the Taiwan Semiconductor datasheet. This packaging format supports manual and semi-automated through-hole assembly processes. The device uses a DO-204AC (DO-15) axial package with pure tin-plated leads, and the "A0G" suffix explicitly denotes the ammo box configuration - distinct from tape-and-reel variants marked "H" or plain "P6KE350A".

Does the P6KE350A A0G meet automotive qualification standards?

No, the P6KE350A A0G is not AEC-Q101 qualified. While the broader P6KE series includes AEC-Q101 variants (denoted by "H" suffix, e.g., P6KE350AH), the P6KE350A A0G lacks this qualification and is intended for industrial, commercial, and building automation applications. Its construction meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability, but it has not undergone the temperature cycling, humidity bias, and mechanical shock testing required for automotive-grade deployment.

How does the P6KE350A A0G compare to the P6KE350 (non-A) variant?

The P6KE350A A0G features tighter breakdown voltage tolerance (332–368 V) versus the standard P6KE350 (315–385 V), resulting in more consistent clamping behavior and reduced risk of premature conduction. Both share identical package (DO-204AC), power rating (600 W), and thermal limits (175°C), but the "A" grade offers improved V_BR uniformity essential for designs requiring precise overvoltage thresholds. The P6KE350A A0G thus provides higher confidence in surge response predictability across production lots.