Taiwan Semiconductor Corporation P6KE8.2

Overview

P6KE8.2 from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage clamping in DC power rails and signal lines. It features a nominal breakdown voltage of 8.2 V, minimum/maximum V_BR of 7.38 V / 9.02 V at 10 mA, stand-off voltage V_WM of 6.63 V, clamping voltage V_C of 12.5 V at 200 A peak surge current, and operates within -55°C to +175°C junction temperature range - deployed in automotive body control modules, industrial sensor interfaces, and LED driver input protection.

For engineers reviewing the P6KE8.2 datasheet, P6KE8.2 pinout, P6KE8.2 application, or P6KE8.2 equivalent, key selection criteria include verified unidirectional clamping performance under 10/1000 µs surge, low dynamic impedance (<1 Ω typical), sub-1 ps response time from 0 V to V_BR, <1 µA reverse leakage above 10 V, and DO-204AC (DO-15) package compatibility with standard through-hole PCB layouts.

Technical Context

The P6KE8.2 implements a silicon avalanche diode structure optimized for fast transient suppression in low-voltage DC systems. Its unidirectional configuration provides asymmetric conduction: forward-biased operation supports surge current handling up to 100 A (8.3 ms half-sine), while reverse-biased clamping activates at V_BR ≥7.38 V to limit transients to ≤12.5 V at 200 A.

Thermal design relies on junction-to-ambient dissipation rated at 5 W (TA = 75°C, 9.5 mm lead length), with derating per Fig.2 above 25°C ambient. The device meets AEC-Q101 stress test requirements when ordered with "H" suffix (P6KE8.2H), though base P6KE8.2 is not AEC-Q101 qualified per ordering note.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking. Dimensions conform to JEDEC DO-15 outline; leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ8.0A and 1.5KE8.2A, the P6KE8.2 offers identical clamping voltage and tighter V_BR tolerance (±9.8% vs ±12.5% for SMAJ8.0A) in a cost-optimized DO-15 through-hole package, making it optimal for high-volume industrial power supplies where manual or wave-solder assembly is used.

Availability

P6KE8.2 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, LED driver input stages, and USB-C 5 V rail protection requiring stable component supply across multi-year production cycles.

Supply support for P6KE8.2 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, with ISO/TS 16949 and ISO 14001 certifications.

The P6KE series was developed for cost-sensitive, high-reliability transient suppression in automotive and industrial power systems, emphasizing robust surge handling, tight parametric tolerances, and AEC-Q101 qualification options.

FAQ

What is the maximum clamping voltage of the P6KE8.2 under standard surge conditions?

The P6KE8.2 exhibits a maximum clamping voltage (V_C) of 12.5 V when subjected to a 200 A peak surge current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events - critical for ensuring downstream 5 V logic ICs remain within absolute maximum ratings. The P6KE8.2 maintains this clamping performance across its full operating temperature range (-55°C to +175°C).

Is the P6KE8.2 suitable for bidirectional signal line protection?

No, the P6KE8.2 is a unidirectional TVS diode and is not rated for bidirectional clamping. Its electrical specifications - including V_BR, V_WM, and I_R - apply only in reverse bias; forward conduction is limited to surge current handling (IFSM = 100 A). For bidirectional protection, select the P6KE8.2C variant (if available) or a dedicated bidirectional part such as P6KE8.2CA. Using P6KE8.2 on AC or differential signal lines risks forward conduction damage during normal operation.

Does the P6KE8.2 meet AEC-Q101 qualification standards?

The base P6KE8.2 is not AEC-Q101 qualified. However, the AEC-Q101-compliant version is designated P6KE8.2H and carries the "H" suffix in the ordering code per TSC's documentation. This variant undergoes stress testing per AEC-Q101 Rev D, including HTGB, HTRB, and temperature cycling. Designers requiring automotive-grade reliability must specify P6KE8.2H - the P6KE8.2 alone is intended for industrial and commercial applications.

What is the reverse leakage current of the P6KE8.2 at its maximum working voltage?

At its maximum stand-off voltage (V_WM) of 6.63 V, the P6KE8.2 exhibits a maximum reverse leakage current (I_R) of 200 µA at 25°C ambient, per the "Maximum Reverse Leakage I_D@ V_WM" specification. This low leakage ensures minimal power loss in always-on circuits and preserves battery life in portable equipment. Leakage remains below 1 µA when reverse voltage exceeds 10 V - a key parameter for protecting high-impedance sensor inputs.

How does the P6KE8.2 compare to the P6KE8.2A variant?

The P6KE8.2A offers tighter breakdown voltage tolerance: 7.79–8.61 V (±5%) versus 7.38–9.02 V (±9.8%) for the P6KE8.2. Both share identical V_WM (7.02 V), V_C (12.1 V), and surge rating (600 W). The P6KE8.2A's narrower V_BR window improves predictability in precision clamping applications - such as protecting 3.3 V or 5 V rails where even 0.3 V variation affects margin - while the standard P6KE8.2 provides cost advantage in less sensitive designs.