Diodes Incorporated MUR460D

Overview

MUR460D from Diodes Incorporated is a super fast glass passivated rectifier diode rated for 600 V repetitive peak reverse voltage and 4.0 A average forward current, featuring 50 ns reverse recovery time and 1.28 V forward voltage at 4 A (25°C), used in high-frequency switching power supplies and PFC stages.

For engineers reviewing the MUR460D datasheet, MUR460D pinout, MUR460D application, or MUR460D equivalent, key selection criteria include reverse recovery time, thermal resistance (11 °C/W), AEC-Q101 qualification, UL 94V-0 flammability rating, and DO-201AD package compatibility with through-hole PCB layouts.

Technical Context

This device employs a planar epitaxial silicon junction with glass passivation to achieve stable super-fast switching performance. Its 50 ns reverse recovery time (measured at IF=0.5A, IR=1A, IRR=0.25A) enables efficient operation in 100–500 kHz SMPS topologies.

The 11 °C/W typical junction-to-lead thermal resistance and 175°C maximum junction temperature support high-power-density designs. Reverse leakage remains ≤10 µA at 600 V and 25°C, rising to 250 µA at 150°C - critical for thermal stability in automotive under-hood environments.

Key Specifications

Pinout & Package

DO-201AD molded plastic package with axial leads; cathode indicated by color band; weight 1.1 g; mountable in any orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH4R06DJF, MUR460D delivers lower switching loss and automotive qualification; versus MUR460E, it offers identical performance with Diodes Incorporated's specific process control and lot traceability for Tier-1 automotive programs.

Availability

MUR460D is available at Aetrix Electronics and suitable for server power supplies, automotive onboard chargers, and industrial motor drives requiring stable component supply across multi-year production cycles.

Supply support for MUR460D 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in Taiwan, China, and Malaysia.

The MUR460D belongs to Diodes' super-fast rectifier product line, engineered specifically for high-efficiency AC/DC conversion in automotive, industrial, and computing power systems where low T_rr and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum junction temperature for MUR460D?

The MUR460D has a specified operating junction temperature range of −55°C to +175°C. This 175°C maximum enables reliable operation in under-hood automotive environments and high-ambient industrial settings without derating, provided thermal design meets the 11 °C/W R_θJL requirement via adequate PCB copper area or heatsinking.

Is MUR460D suitable for surface-mount assembly?

No - MUR460D uses the axial-leaded DO-201AD package, designed exclusively for through-hole mounting. It lacks solder pads or land patterns compatible with SMT reflow processes. For surface-mount equivalents, consider Diodes' SBM460 (SMB) or MBRB460 (PowerDI5) packages with matching 600 V/4 A ratings.

Does MUR460D require a heatsink in standard operation?

A dedicated heatsink is not required if the average forward current stays ≤4.0 A at T_L ≤120°C and PCB layout provides ≥2 cm² of 2-oz copper connected directly to both leads. The 11 °C/W R_θJL allows sufficient heat transfer via leads alone in most medium-power applications; heatsinking becomes necessary only above 3.5 A in enclosed, still-air environments.

How does the 50 ns reverse recovery time impact EMI performance?

The 50 ns T_rr minimizes reverse recovery current spike amplitude and di/dt during turn-off, directly reducing high-frequency ringing on switching nodes. This lowers conducted and radiated EMI in the 30–300 MHz band, easing compliance with CISPR-22/32 Class B limits without additional snubbers or shielding in well-laid-out PCBs.