Taiwan Semiconductor Corporation MUR190H

Overview

MUR190H from Taiwan Semiconductor is an AEC-Q101-qualified ultra-fast recovery rectifier diode in DO-204AC (DO-15) package, rated for 1 A average forward current and 900 V repetitive peak reverse voltage, with 1.70 V max forward voltage at 1 A and 25°C, 75 ns reverse recovery time, and 150°C maximum junction temperature - used in automotive-grade DC-DC converters and switching inverters.

For engineers reviewing the MUR190H datasheet, MUR190H pinout, MUR190H application, or MUR190H equivalent, key selection criteria include its AEC-Q101 qualification, 900 V V_RRM, 75 ns t_rr, 1.70 V V_F @ 1 A/25°C, and DO-15 package compatibility with high-reliability power conversion designs.

Technical Context

The MUR190H is a single-die, planar epitaxial ultra-fast recovery rectifier optimized for high-efficiency switching power supplies. Its 900 V V_RRM and 75 ns t_rr enable low-loss operation in high-frequency flyback and forward converter topologies, while its 150°C T_J(max) supports compact thermal design in constrained automotive and industrial environments.

Unlike standard recovery diodes, the MUR190H achieves reduced switching losses via controlled minority-carrier lifetime and optimized doping profile - evidenced by its 15 pF junction capacitance at 4 V and <5 µA reverse leakage at 25°C, supporting stable performance under fast dv/dt conditions.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated, J-STD-002 solderable, and meet JESD201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1R09 and ES1J, the MUR190H uniquely combines AEC-Q101 qualification, 900 V capability, and axial DO-15 packaging - making it the only drop-in solution for automotive 48 V–800 V DC-DC freewheeling where reliability, voltage margin, and through-hole assembly are jointly required.

Availability

MUR190H is available at Aetrix Electronics and suitable for automotive power conversion, industrial UPS inverters, high-voltage flyback supplies, and relay driver freewheeling applications requiring stable component supply with long-term lifecycle assurance.

Supply support for MUR190H 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.

The MUR190H belongs to TSC's MURx family of ultra-fast recovery rectifiers, engineered specifically for high-efficiency, high-reliability switching power supplies where low V_F, fast t_rr, and AEC-Q101 compliance are mandatory.

FAQ

What does the "H" suffix mean in MUR190H?

The "H" suffix in MUR190H indicates full AEC-Q101 qualification per Rev D requirements, including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST). This distinguishes MUR190H from standard MUR190, which lacks automotive qualification testing documentation. The MUR190H retains identical electrical specs and DO-15 packaging as the base part.

Is MUR190H pin-compatible with other DO-15 rectifiers like 1N4007?

Yes, MUR190H uses the standard DO-204AC (DO-15) axial package with 5.3 mm lead spacing and 2.0 mm body diameter, matching mechanical dimensions of 1N4007, FR107, and ES1J. However, its ultra-fast 75 ns recovery and 900 V rating make it functionally superior - though not electrically interchangeable in slow-recovery-dependent snubber circuits.

What is the maximum allowable surge current for MUR190H?

The MUR190H supports a non-repetitive peak forward surge current (I_FSM) of 35 A for an 8.3 ms single half-sine wave at 25°C ambient. Derating applies above 25°C: at 100°C ambient, I_FSM drops to approximately 22 A. This rating is validated per JEDEC JESD201 and is critical for inductive load switching and input rectification surge handling.

Does MUR190H have halogen-free and RoHS-compliant construction?

Yes, MUR190H meets both RoHS Directive 2011/65/EU and IEC 61249-2-21 halogen-free requirements. Its molding compound is UL 94V-0 rated, leads are pure tin-plated (no lead or brominated flame retardants), and full material declarations are available upon request from Taiwan Semiconductor - confirming full compliance for green manufacturing programs.

How does MUR190H's forward voltage compare at elevated temperatures?

At 150°C junction temperature, MUR190H's forward voltage is 1.50 V max at 1 A - a 0.20 V reduction versus its 25°C value of 1.70 V. This negative temperature coefficient improves thermal stability in parallel configurations and reduces conduction loss under high-ambient conditions, unlike silicon carbide diodes which exhibit positive V_F drift.