Taiwan Semiconductor Corporation P6KE8.2CH

Overview

P6KE8.2CH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage clamping in power supply input stages and automotive ESD protection circuits. It features a nominal breakdown voltage of 8.2 V, maximum clamping voltage of 12.5 V at 200 A peak surge current, and stand-off voltage of 6.63 V - enabling reliable protection of 5 V and 3.3 V logic rails against IEC 61000-4-5 surges and ISO 7637-2 transients.

For engineers reviewing the P6KE8.2CH datasheet, P6KE8.2CH pinout, P6KE8.2CH application, or P6KE8.2CH equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AC (DO-15) package compatibility with high-reliability automotive PCB layouts, low dynamic impedance (<0.03 Ω typical), sub-1 ps response time from 0 V to V_BR, and <1 μA reverse leakage above 10 V - critical for low-power sensor interface and always-on system protection.

Technical Context

The P6KE8.2CH operates as a silicon avalanche diode with single-die construction in a DO-204AC case, optimized for unidirectional clamping only. Its junction temperature range spans −55 °C to +175 °C, supporting under-hood automotive deployment, and it meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.

Electrical behavior follows ANSI/IEEE C62.35 standards: clamping occurs within 1.0 ps (typical) after transient onset, with peak pulse power rated at 600 W for 10/1000 μs waveform and derated linearly above 25 °C ambient per Fig.2. The device exhibits a temperature coefficient of V_BR of +0.065 %/°C, ensuring predictable voltage drift across operating conditions.

Key Specifications

Pinout & Package

DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band; anode and cathode terminals are non-interchangeable for unidirectional operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ8.0A and 1.5KE8.2C, the P6KE8.2CH delivers tighter clamping (12.5 V), AEC-Q101 validation, and axial-lead mechanical robustness - making it the preferred choice for automotive and high-reliability through-hole surge protection where layout and qualification are non-negotiable.

Availability

P6KE8.2CH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and smart lighting driver development requiring stable component supply and long-term lifecycle support.

Supply support for P6KE8.2CH 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, and rectifiers with global distribution and AEC-Q101 certification capabilities.

The P6KE series was engineered specifically for high-energy transient suppression in automotive and industrial environments, emphasizing rugged packaging, precise V_BR tolerance, and consistent clamping performance across temperature extremes.

FAQ

What does the "H" suffix in P6KE8.2CH signify?

The "H" suffix in P6KE8.2CH indicates full AEC-Q101 qualification per the manufacturer's ordering code specification. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge - confirming suitability for automotive powertrain and chassis applications. The base P6KE8.2 is not AEC-Q101 qualified, so P6KE8.2CH must be specified where automotive reliability is mandatory.

Can P6KE8.2CH be used in bidirectional configurations?

No, P6KE8.2CH is strictly unidirectional and lacks symmetrical breakdown characteristics. Its datasheet specifies cathode-band polarity and lists only single-direction V_BR and V_C values. For bidirectional protection, select P6KE8.2C (with "C" suffix) or P6KE8.2CA - which are explicitly rated for conduction in both directions and have matched parameters for positive and negative transients.

How does P6KE8.2CH's clamping voltage compare to competing 8.2 V TVS diodes?

P6KE8.2CH clamps to 12.5 V at 200 A (10/1000 μs), which is 0.4–0.9 V lower than comparable 8.2 V TVS diodes like SMBJ8.0A (13.6 V) or 1.5KE8.2C (13.4 V). This tighter clamping directly reduces stress on downstream 16 V-rated ICs and allows smaller input capacitors - a measurable advantage in space-constrained automotive modules where voltage margin is critical.

Is P6KE8.2CH compatible with lead-free reflow soldering processes?

Yes, P6KE8.2CH uses pure tin-plated leads compliant with J-STD-002 for solderability, and its DO-204AC molding compound meets RoHS and halogen-free standards (IEC 61249-2-21). It is rated for peak reflow temperatures up to 260 °C per JEDEC J-STD-020, supporting standard lead-free assembly without delamination or parametric shift.

What is the maximum allowable mounting pad size for P6KE8.2CH to achieve rated 600 W surge performance?

To achieve the full 600 W surge rating, P6KE8.2CH must be mounted on 5 × 5 mm copper pads per terminal, as defined in the Absolute Maximum Ratings table. Smaller pads reduce thermal dissipation and cause premature failure during 10/1000 μs surges; using the specified pad area ensures junction temperature remains within the 175 °C limit during worst-case transient events.