STMicroelectronics BYT16P-400

Overview

BYT16P-400 from STMicroelectronics is a dual fast recovery rectifier diode in TO-220AB package, designed for freewheeling and output rectification in switch-mode power supplies and motor control circuits. It delivers 16 A average forward current at 100°C case temperature, 400 V repetitive peak reverse voltage, and ultra-fast 35 ns maximum reverse recovery time (trr) at 100°C.

For engineers reviewing the BYT16P-400 datasheet, BYT16P-400 pinout, BYT16P-400 application, or BYT16P-400 equivalent, key selection criteria include low switching losses (<1.4 V VF at 100°C/8 A), thermal resistance of 3.75 °C/W per diode, and validated performance under high dIF/dt (−64 A/µs) with <2.8 A IRM.

Technical Context

This dual-diode device integrates two independent fast recovery rectifiers in a single TO-220AB thermally optimized package. Each diode supports 400 V VRRM and exhibits trr ≤35 ns at Tj = 100°C, IF = 0.5 A, VR = 30 V, dIF/dt = −15 A/µs - enabling high-frequency operation up to several hundred kHz in SMPS topologies.

Thermal coupling between diodes is characterized by Rth(c) = 0.25 °C/W, allowing accurate junction temperature estimation when both diodes conduct simultaneously. Conduction loss is modeled as P = 1.1 × IF(AV) + 0.024 × IF²(RMS), supporting precise thermal design for continuous 16 A average load conditions.

Key Specifications

Pinout & Package

TO-220AB plastic package with isolated mounting tab (electrically connected to cathode K). The device contains two independent diodes sharing a common cathode configuration: terminals A1 and A2 are anodes, K is the shared cathode. Mounting torque: 0.08 N·m recommended (max 0.10 N·m).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1604D and MUR1640CT, BYT16P-400 uniquely combines dual-anode/common-cathode integration, 35 ns trr at 100°C, and 3.75 °C/W thermal resistance - making it optimal for space-constrained, high-frequency freewheeling in motor drives and compact SMPS.

Availability

BYT16P-400 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial motor control circuits, and welding equipment requiring stable component supply and long-term manufacturability.

Supply support for BYT16P-400 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, microcontrollers, and automotive ICs.

BYT16P-400 belongs to ST's high-voltage fast recovery diode product line, engineered specifically for high-efficiency, high-frequency power conversion in industrial and consumer power systems.

FAQ

What is the maximum junction temperature and how does it affect derating?

The BYT16P-400 has a maximum operating junction temperature (Tj) of 150 °C. Derating begins at Tc = 100°C, where IF(AV) is specified at 16 A. Above 100°C case temperature, average current must be linearly reduced to maintain Tj ≤ 150°C - e.g., at Tc = 125°C, IF(AV) drops to approximately 10 A using the thermal resistance model.

Can BYT16P-400 be used in parallel configurations?

Parallel operation is not recommended due to mismatch in VF and trr between units, which causes current imbalance and thermal runaway. For higher current needs, use a single higher-rated device or implement active current-sharing circuitry - ST does not characterize or guarantee parallel performance for this part.

Is the TO-220AB package electrically insulated?

No - the TO-220AB package has an electrically conductive mounting tab directly connected to the common cathode (K) terminal. Electrical isolation requires a mica or polymer insulator washer and isolated mounting hardware; thermal paste must be applied only to the metal surface, not across isolation layers.

How is reverse recovery time measured and why is the 35 ns value specified at 100°C?

trr is measured per JEDEC JESD24-10 with IF = 0.5 A, VR = 30 V, dIF/dt = −15 A/µs, and Tj = 100°C. The 35 ns max reflects worst-case recovery under elevated temperature - critical because trr typically increases with junction temperature, and real-world operation often occurs near thermal limits in high-power converters.