Taiwan Semiconductor Corporation MUR190AHA0G

Overview

MUR190AHA0G from Taiwan Semiconductor is a 1A, 900V high-efficiency ultrafast recovery rectifier diode in DO-204AC (DO-15) package, featuring 75 ns reverse recovery time, 1.70 V max forward voltage at 1A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or output rectifier in DC-DC converters and switching inverters operating up to 150°C junction temperature.

For engineers reviewing the MUR190AHA0G datasheet, MUR190AHA0G pinout, MUR190AHA0G application, or MUR190AHA0G equivalent, key selection criteria include its 900V V_RRM, 35A I_FSM, 150°C T_JMAX, low 15 pF junction capacitance, and AEC-Q101-compliant construction for harsh-environment power conversion designs.

Technical Context

This single-die ultrafast rectifier uses optimized epitaxial silicon to achieve tight trr control (75 ns typical) with minimal tail current, enabling high-frequency switching in SMPS topologies. Its 1.70 V forward voltage at rated current and elevated temperature stability support thermal efficiency in compact, convection-cooled designs.

The device integrates pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance, housed in UL 94V-0 molded DO-204AC packaging with cathode band polarity marking - critical for automated assembly and automotive under-hood deployment.

Key Specifications

Pinout & Package

DO-204AC (DO-15) axial-leaded package with cathode indicated by a painted band on the body; leads are pure tin-plated, J-STD-002 solderable, and JESD201 Class 2 whisker-resistant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1R09 and MUR190E, the MUR190AHA0G uniquely combines AEC-Q101 compliance, DO-15 form factor, and verified 150°C operation - making it the only drop-in solution for space-constrained automotive DC-DC modules requiring zero qualification overhead.

Availability

MUR190AHA0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching inverters, and renewable energy charge controllers requiring stable component supply across multi-year production cycles.

Supply support for MUR190AHA0G 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, serving automotive, industrial, and consumer markets since 1979.

The MUR190AHA0G belongs to TSC's AEC-Q101-qualified ultrafast rectifier family, engineered specifically for high-reliability power conversion in thermally aggressive environments - emphasizing low trr, stable V_F, and robust package integrity.

FAQ

What is the maximum junction temperature rating for MUR190AHA0G?

The MUR190AHA0G has a maximum junction temperature (T_JMAX) of +150°C, as specified in the absolute maximum ratings table. This rating applies across the full operating range and is validated under AEC-Q101 stress conditions. Operation beyond this limit risks permanent degradation of the die or bond wires. Derating curves in the datasheet show usable current decreases linearly above 75°C ambient, and thermal design must maintain T_J ≤ 150°C under worst-case load and ambient conditions. The MUR190AHA0G is not rated for 175°C operation - that value applies only to the MUR160 variant.

Is MUR190AHA0G pin-compatible with other DO-204AC rectifiers like MUR160 or MUR180?

Yes, the MUR190AHA0G shares identical DO-204AC (DO-15) mechanical dimensions, lead spacing, and polarity marking (cathode band) with MUR160, MUR180, and other members of the MUR1x family. All have the same anode/cathode terminal configuration and soldering footprint. However, electrical differences - especially V_RRM (900 V vs. 600 V or 800 V), V_F, and t_rr - mean substitution requires verification against circuit voltage stress and thermal performance. The MUR190AHA0G is not a direct replacement unless the design specifically requires 900 V blocking capability.

Does MUR190AHA0G meet automotive qualification standards?

Yes, the "H" suffix in MUR190AHA0G explicitly denotes AEC-Q101 qualification, confirmed in the ordering information and features list. This includes passing high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST) per AEC-Q101 Rev D. The "A0G" suffix indicates green compound and ammo box packaging. Full qualification reports are available upon request for Tier-1 automotive customers. The MUR190AHA0G is approved for use in non-safety-critical automotive power modules, including body control units and infotainment power supplies.

What is the reverse recovery time (t_rr) specification for MUR190AHA0G?

The MUR190AHA0G has a maximum reverse recovery time (t_rr) of 75 ns, measured under the condition: I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A, at T_A = 25°C. This value is typified in the electrical specifications table and confirmed in Figure 6 of the datasheet. The ultrafast recovery enables efficient operation in switching frequencies up to ~2 MHz, significantly reducing switching losses compared to standard recovery rectifiers. Designers should verify actual t_rr in-circuit using oscilloscope measurements due to layout-dependent parasitics.

How does the forward voltage of MUR190AHA0G vary with temperature?

The MUR190AHA0G exhibits a negative temperature coefficient for forward voltage: V_F decreases as junction temperature increases. At 1 A and 25°C, V_F is ≤1.70 V; at 1 A and 150°C, it drops to ≤1.50 V. This behavior improves thermal stability in parallel configurations and reduces conduction loss at elevated temperatures. The datasheet provides forward characteristic curves (Figure 4) showing the full V_F-I_F-T_J relationship. For thermal modeling, designers should use the 1.50 V value at T_J = 150°C to calculate worst-case power dissipation in high-ambient environments.