STMicroelectronics BYW100-200RL

Overview

BYW100-200RL from STMicroelectronics is a high-efficiency fast recovery rectifier diode in DO-15 package, rated for 200 V repetitive peak reverse voltage, 1.5 A average forward current at 95°C, and 80 A surge current. It delivers low conduction losses (VF ≤ 0.85 V at 1.5 A, 100°C) and ultrafast switching (trr = 35 ns, tfr = 30 ns), enabling use in SMPS base-drive and transistor snubber circuits.

For engineers reviewing the BYW100-200RL datasheet, BYW100-200RL pinout, BYW100-200RL application, or BYW100-200RL equivalent, key selection criteria include reverse recovery time under dIF/dt = −50 A/µs, thermal resistance junction-to-ambient (45 °C/W on infinite heatsink), forward voltage drop at elevated temperature, and DO-15 mechanical compatibility with through-hole PCB layouts.

Technical Context

This diode employs optimized silicon epitaxial construction to achieve fast minority-carrier recombination, minimizing stored charge (Qrr = 10 nC) and peak reverse recovery current (IRM = 1.2 A typical at 1.5 A, 30 V). Its low VF and negligible switching losses support high-frequency operation up to 100 kHz in flyback and forward converter topologies.

The device is characterized across temperature (−65°C to +150°C) with validated trr and IRM data at Tj = 100°C, enabling accurate loss modeling using P = 0.75 × IF(AV) + 0.075 × IF²(RMS). Thermal design relies on Rth(j–a) = 45 °C/W (infinite heatsink, 10 mm leads) and Rth(j–l) = 10 °C/W (lead-to-case).

Key Specifications

Pinout & Package

DO-15 axial-leaded package with cathode indicated by white band. Body length 6.05–6.75 mm, lead diameter 0.71–0.88 mm, overall length 26–31 mm. Designed for through-hole mounting and wave soldering (TL = 230°C for 10 s at 4 mm from case).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1R02, BYW100-200RL trades 10 ns slower recovery and 0.2 A lower average current for proven thermal stability at 150°C junction and wider availability in tape-and-reel (6000 pcs) for automated assembly.

Availability

BYW100-200RL is available at Aetrix Electronics and suitable for switch-mode power supplies, transistor base-drive protection circuits, DC-DC freewheeling paths, and inductive load flyback suppression requiring stable component supply and DO-15 through-hole compatibility.

Supply support for BYW100-200RL 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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

BYW100-200RL belongs to ST's high-voltage fast recovery diode product line, engineered specifically for high-efficiency, high-reliability rectification in compact power conversion systems operating up to 150°C junction temperature.

FAQ

What is the maximum allowable lead temperature during soldering?

The maximum lead temperature for soldering is 230°C for 10 seconds measured at 4 mm from the case. This specification ensures epoxy integrity and die attach reliability. Exceeding this limit risks internal delamination or bond wire damage. Use temperature profiling and preheating to avoid thermal shock during wave or hand soldering.

Can BYW100-200RL be used in surface-mount designs?

No - BYW100-200RL is exclusively packaged in DO-15 axial-leaded format and is not compatible with SMT reflow or pick-and-place processes. For surface-mount equivalents, consider STTH1R02S (SOD-123FL) or STTH2R02 (SMA), which share similar electrical specs but require footprint redesign and thermal pad layout verification.

How does junction temperature affect reverse recovery time?

trr increases with junction temperature: at Tj = 100°C, trr rises to ~45 ns (vs. 35 ns at 25°C) under identical test conditions (IF = 1 A, dIF/dt = −50 A/µs, VR = 30 V). This is due to longer minority-carrier lifetime at elevated temperatures and must be factored into loss calculations for high-ambient applications.

Is the white band polarity marking consistent across all production lots?

Yes - the white band always denotes the cathode terminal, verified per STMicroelectronics' mechanical drawing 10010101 and JEDEC DO-15 standard. Visual inspection under 10× magnification confirms band position within ±0.2 mm tolerance relative to body end, ensuring unambiguous orientation during manual or automated assembly.