STMicroelectronics P6KE7V5A

Overview

P6KE7V5A from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode in DO-15 package, designed for IEC 61000-4-2 ESD protection (30 kV air/contact) and IEC 61000-4-4 surge immunity (4 kV level 4). It features a 7.5 V nominal breakdown voltage (VBR = 7.14–7.5 V), clamping voltage of 12.5 V at 49.2 A (10/1000 µs), and operates up to 175 °C junction temperature. It is used in DC power input stages of industrial sensors and telecom interface circuits.

For engineers reviewing the P6KE7V5A datasheet, P6KE7V5A pinout, P6KE7V5A application, or P6KE7V5A equivalent, key selection criteria include standoff voltage (VRM = 6.4 V), leakage current (<10 µA at 25 °C), dynamic resistance (0.059 Ω), peak pulse current capability (49.2 A), and thermal derating above 25 °C ambient.

Technical Context

The P6KE7V5A employs planar junction technology optimized for low leakage (<10 µA at VRM) and high-temperature stability (Tj max = 175 °C), enabling reliable operation in SMPS front-end and automotive body electronics where thermal cycling is severe. Its unidirectional configuration provides asymmetric clamping-low forward voltage drop (~1.5 V at 100 A) during surge conduction and precise reverse standoff.

Electrical behavior follows defined pulse standards: 10/1000 µs waveform defines 600 W rating and 49.2 A IPP, while 8/20 µs yields higher peak power (up to 4 kW) with lower clamping voltage (10.5 V) and higher current (298 A). Temperature coefficients (αT = 5.7 × 10⁻⁴ /°C) allow accurate VBR and VCL extrapolation across -55 to +175 °C.

Key Specifications

Pinout & Package

DO-15 (JEDEC DO-204AC) axial-leaded package with cathode band marking. Body length: 6.05–6.75 mm; lead diameter: 0.71–0.88 mm; overall length: 26–31 mm. Matte tin-plated leads compliant with J-STD-002 and RoHS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar unidirectional TVS diode applications.

Compared with SMBJ7.0A and 1N6267A, P6KE7V5A offers superior ESD immunity (30 kV vs. 25–27 kV), verified UL 497B listing, and tighter VBR tolerance (±5% vs. ±7%), making it preferred for new designs requiring regulatory compliance and repeatable clamping.

Availability

P6KE7V5A is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and SMPS front-end surge suppression requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for P6KE7V5A 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and consumer markets.

The P6KE series belongs to ST's high-reliability TVS portfolio, engineered specifically for robust transient suppression in harsh environments-emphasizing thermal stability, low leakage, and international EMC standard compliance.

FAQ

What is the maximum clamping voltage for P6KE7V5A under a 10/1000 µs surge?

The maximum clamping voltage (VCL) is 12.5 V at 49.2 A for a 10/1000 µs waveform, measured at Tj = 25 °C. This value increases linearly with junction temperature using αT = 5.7 × 10⁻⁴ /°C, reaching ~13.1 V at Tj = 125 °C.

Can P6KE7V5A be used in bidirectional signal lines?

No-P6KE7V5A is unidirectional and must be installed with cathode toward the protected line. For bidirectional protection (e.g., RS-485), use P6KE7V5CA, which has symmetrical clamping and identical VBR/VCL specs in both polarities.

Does P6KE7V5A require derating at elevated ambient temperatures?

Yes-peak pulse power drops from 600 W at 25 °C to ~300 W at Tj = 175 °C (per Figure 3). Derating must follow the curve in DS0681 Rev 9 page 3; PCB copper area and airflow directly impact achievable Tj under repeated surges.

Is P6KE7V5A compatible with lead-free reflow soldering?

Yes-it complies with J-STD-020 MSL Level 1 and supports ST's recommended reflow profile (peak 240–245 °C, 60–90 s above 217 °C). Matte tin plating ensures wetting compatibility and avoids whisker growth per JESD201 Class 2.