Taiwan Semiconductor Corporation HER606G

Overview

HER606G from Taiwan Semiconductor is a 6 A, 600 V high-efficiency glass-passivated axial-lead rectifier diode in R-6 package, featuring 1.7 V forward voltage at 6 A and 75 ns reverse recovery time, used in switching-mode power supplies and freewheeling paths in industrial DC-DC converters.

For engineers reviewing the HER606G datasheet, HER606G pinout, HER606G application, or HER606G equivalent, key selection factors include peak reverse voltage rating (600 V), surge current capability (150 A), thermal resistance (37 °C/W), junction temperature limit (+150 °C), and RoHS/halogen-free compliance for automotive-grade designs.

Technical Context

The HER606G is a single-die, silicon planar epitaxial high-efficiency rectifier optimized for fast switching with low conduction loss and controlled reverse recovery behavior. Its 600 V V_RRM, 75 ns t_rr, and 1.7 V V_F at 6 A reflect trade-offs favoring high-voltage operation over ultra-fast recovery.

Designed for continuous forward conduction and repetitive surge handling, it supports 8.3 ms half-sine I_FSM up to 150 A and operates across –55 °C to +150 °C junction temperature range, with R-6 package enabling through-hole mounting and 37 °C/W junction-to-ambient thermal resistance.

Key Specifications

Pinout & Package

R-6 package: axial-lead, molded epoxy case with cathode band marking; lead finish is pure tin, solderable per J-STD-002; meets UL 94V-0 and JESD201 Class 2 whisker requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage rectifier applications.

Compared with STTH606S and MUR660CT, the HER606G offers lower system cost and simpler assembly via R-6 axial leads, better suited for compact, cost-sensitive industrial and automotive auxiliary power supplies where thermal management relies on PCB copper area rather than discrete heatsinks.

Availability

HER606G is available at Aetrix Electronics and suitable for industrial DC-DC converters, switching inverters, and automotive on-board chargers requiring stable component supply with consistent parametric performance and long-term lifecycle support.

Supply support for HER606G 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 high-reliability rectifiers, TVS devices, and power MOSFETs.

The HER601G–HER606G series was developed to deliver high-efficiency, AEC-Q101-capable rectification for automotive and industrial power conversion systems demanding robust surge immunity and extended temperature operation.

FAQ

What is the maximum junction temperature rating for HER606G?

The HER606G has a maximum junction temperature (T_J) rating of +150 °C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet Version H2104. This allows operation in high-ambient environments such as under-hood automotive locations or enclosed industrial enclosures, provided thermal design maintains junction temperature below this limit. The HER606G must be derated above 25 °C ambient per the forward current derating curve.

Is HER606G RoHS and halogen-free compliant?

Yes, the HER606G is RoHS compliant and halogen-free according to IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. The molding compound contains no brominated flame retardants, and the pure tin-plated leads meet J-STD-002 solderability standards. This compliance supports environmentally regulated markets and green manufacturing initiatives.

What does the "G" suffix signify in HER606G?

The "G" suffix in HER606G indicates green compound packaging-specifically, halogen-free epoxy meeting IEC 61249-2-21-and confirms RoHS compliance. It does not denote AEC-Q101 qualification; that requires the "H" suffix (e.g., HER606GH). The "G" is part of Taiwan Semiconductor's standardized ordering code nomenclature for environmentally compliant variants across the HER60xG family.

What is the reverse recovery time (t_rr) of HER606G and how is it measured?

The HER606G has a reverse recovery time (t_rr) of 75 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_RR = 0.25 A, per the ELECTRICAL SPECIFICATIONS table in the datasheet. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and EMI in high-frequency converters. It is validated using the test circuit diagram shown in Figure 6 of the datasheet.

Can HER606G replace HER604G in an existing design?

HER606G can replace HER604G only if the design requires ≥300 V V_RRM headroom and can accommodate its higher forward voltage (1.7 V vs. 1.0 V for HER604G at 6 A). While both share R-6 package and pinout, the increased V_F raises conduction loss by ~0.6 W at 6 A, potentially affecting thermal design. No layout change is needed, but efficiency and temperature rise must be re-verified for the specific operating conditions of the HER606G.