Taiwan Semiconductor Corporation MUR1620CT

Overview

MUR1620CT from Taiwan Semiconductor is a dual-die ultra-fast recovery rectifier in TO-220AB package, rated for 16A average forward current, 200V repetitive peak reverse voltage, and 25ns reverse recovery time at 25°C; it operates up to 175°C junction temperature and is used in high-frequency switching power supplies for freewheeling and output rectification.

For engineers reviewing the MUR1620CT datasheet, MUR1620CT pinout, MUR1620CT application, or MUR1620CT equivalent, key selection criteria include its 25ns trr, 0.975V max VF at 8A/25°C, TO-220AB thermal resistance of 3°C/W, AEC-Q101 qualification availability (MUR1620CTH), and dual-diode configuration for center-tapped or full-wave bridge layouts.

Technical Context

The MUR1620CT integrates two independent ultra-fast recovery diodes in a single TO-220AB package with common cathode connection, enabling full-wave rectification without external interconnects. Its glass-passivated junction ensures stable operation at 175°C, and the 25ns reverse recovery time supports switching frequencies beyond 100 kHz in SMPS designs.

Thermal performance is defined by a junction-to-case resistance of 3°C/W, allowing 16A continuous conduction with appropriate heatsinking. The device exhibits low leakage-5µA max at 25°C and 250µA at 125°C-at its 200V VRRM rating, supporting high-efficiency DC-DC converter output stages.

Key Specifications

Pinout & Package

Package: TO-220AB, 3-terminal, dual-diode configuration with common cathode (pin 2). Case is electrically connected to cathode terminal. Mounting torque ≤0.56 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1602CW and IXYS MUR1620CT, the Taiwan Semiconductor MUR1620CT offers optimal balance of thermal performance (3°C/W), compact TO-220AB footprint, and AEC-Q101 availability-making it preferred for space-constrained, high-reliability industrial and automotive power stages.

Availability

MUR1620CT is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and freewheeling applications requiring stable component supply, automotive-grade qualification (via MUR1620CTH), and long-lifecycle support.

Supply support for MUR1620CT 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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and automotive markets since 1979.

The MUR1620CT belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion systems where low trr, low VF, and high-temperature reliability are mandatory.

FAQ

What is the maximum junction temperature rating for the MUR1620CT?

The MUR1620CT has a maximum junction temperature (TJ MAX) of 175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows sustained operation in high-ambient environments such as industrial motor drives and automotive on-board chargers. Derating begins above 25°C ambient, with full 16A current supported up to approximately 125°C case temperature when mounted on an adequate heatsink. The MUR1620CT maintains stable electrical parameters-including 5µA max IR at 25°C-within this thermal envelope.

Is the MUR1620CT pin-compatible with other TO-220AB dual-diode rectifiers?

Yes, the MUR1620CT uses the industry-standard TO-220AB outline with pins 1 (Anode 1), 2 (Common Cathode), and 3 (Anode 2), matching mechanical and electrical pinout of equivalents like STTH1602CW (in TO-247) and IXYS MUR1620CT. However, TO-220AB pin compatibility is confirmed only with devices explicitly specified in TO-220AB with common-cathode dual-die configuration. Always verify polarity marking and thermal pad isolation before PCB layout reuse.

What is the reverse recovery time (trr) of the MUR1620CT and under what test conditions is it measured?

The MUR1620CT has a reverse recovery time (trr) of 25 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A at TJ = 25°C, per the Taiwan Semiconductor datasheet. This value reflects actual switching behavior in high-frequency circuits and is significantly faster than standard fast recovery diodes (typically 50–100 ns). The 25 ns trr directly contributes to reduced switching losses and lower EMI generation in 100–500 kHz SMPS designs using the MUR1620CT.

Does the MUR1620CT meet automotive qualification standards?

The base MUR1620CT is not AEC-Q101 qualified, but the MUR1620CTH variant-identical in all electrical and mechanical specifications-is explicitly qualified per AEC-Q101. Both share the same TO-220AB package, 200V VRRM, 16A IF, and 25ns trr. The "H" suffix denotes automotive qualification, including stress testing for temperature cycling, humidity, and mechanical shock. For automotive applications, specify MUR1620CTH to ensure compliance; the MUR1620CT remains suitable for industrial use.

What is the thermal resistance (RθJC) of the MUR1620CT and how does it affect heatsink design?

The MUR1620CT has a junction-to-case thermal resistance (RθJC) of 3°C/W, measured from die to the metal tab (Pin 2/cathode). This value means that at 16A conduction with 0.975V VF, ~15.6W of power dissipation will produce a 46.8°C temperature rise from junction to case. To maintain TJ ≤175°C at 70°C ambient, the heatsink must provide ≤3.3°C/W total RθCA. This makes the MUR1620CT compatible with compact extruded or stamped TO-220 heatsinks, unlike higher-RθJC alternatives requiring forced airflow.