STMicroelectronics BYT08P-1000

Overview

BYT08P-1000 from STMicroelectronics is a fast recovery rectifier diode in TO-220AC plastic package with cathode connected to case, rated for 1000 V repetitive peak reverse voltage, 8 A average forward current at Tc = 115°C, and 155 ns typical reverse recovery time at IF = 1 A, diF/dt = −15 A/µs, VR = 30 V - used as freewheeling diode in motor control inverters and SMPS rectification stages.

For engineers reviewing the BYT08P-1000 datasheet, BYT08P-1000 pinout, BYT08P-1000 application, or BYT08P-1000 equivalent, key selection criteria include reverse recovery time (trr), junction-to-case thermal resistance (2 °C/W), peak surge current (50 A), forward voltage drop (1.9 V @ 8 A, 25°C), and TO-220AC mechanical mounting constraints.

Technical Context

This diode employs optimized silicon epitaxial structure and lifetime control to achieve very low trr (65–200 ns depending on test conditions) and low switching losses, enabling high-frequency operation in hard-switched converters. Its cathode-connected case supports direct heatsinking while maintaining electrical isolation of anode terminal.

Designed for unidirectional conduction with fast turn-off, it exhibits low noise during commutation due to controlled reverse recovery charge (Qrr not explicitly listed but implied by trr/Irr data) and low overvoltage coefficient (4.5 with 12 µH series inductance), critical for snubberless designs in industrial motor drives.

Key Specifications

Pinout & Package

TO-220AC plastic package with isolated anode lead and cathode electrically connected to the metal tab (case). Mounting via M3 screw with recommended torque 80 cm·N; weight 2.42 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast recovery rectifier applications.

Compared with BYT08P-1000, STTH8R06D trades 400 V voltage headroom for 80 ns faster recovery, while VS-8EWH06FNTR-M3 adds automotive qualification at identical voltage/current specs - neither matches the 1000 V capability required for 690 VAC industrial rectification.

Availability

BYT08P-1000 is available at Aetrix Electronics and suitable for industrial motor control, uninterruptible power supplies, and high-voltage switch-mode power supplies requiring stable component supply despite its obsolete status.

Supply support for BYT08P-1000 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The BYT series targets cost-sensitive, high-reliability industrial power conversion with emphasis on rugged fast-recovery performance in legacy TO-220AC packaging.

FAQ

Is BYT08P-1000 still in active production?

No - STMicroelectronics has marked BYT08P-1000 as obsolete per its 1999 datasheet revision. However, Aetrix Electronics maintains legacy inventory with full traceability and offers lifecycle support including last-time buy coordination and cross-reference guidance for functionally aligned replacements.

Can BYT08P-1000 be mounted directly to a heatsink without insulation?

Yes - the cathode is internally connected to the metal tab, so direct mounting is electrically valid only if the heatsink is referenced to cathode potential. If the heatsink is grounded or at a different potential, an insulating washer and shoulder washer must be used to prevent short circuits.

What is the maximum allowable case temperature for continuous operation?

The datasheet specifies IF(AV) = 8 A at Tc = 115°C, meaning the case temperature must not exceed 115°C under steady-state conditions. Exceeding this risks thermal runaway due to rising IR and reduced trr margin; derating is required above this temperature.

How does the 2 °C/W Rth(j–c) translate to practical heatsink requirements?

With 17 W power dissipation and 2 °C/W Rth(j–c), the junction-to-case temperature rise is 34°C. To hold Tj ≤ 150°C, the heatsink must maintain Tc ≤ 116°C - requiring a heatsink thermal resistance of ≤ 1.5 °C/W (including interface resistance) when ambient is 50°C.