Taiwan Semiconductor Corporation HER603G A0G

Overview

HER603G A0G from Taiwan Semiconductor is a high-efficiency, glass-passivated silicon rectifier diode in R-6 package, rated for 6A average forward current, 200V repetitive peak reverse voltage (VRRM), and 150A surge current (IFSM). It delivers low forward voltage drop (VF = 1.0 V at 6A, 25°C), low reverse recovery time (trr = 50 ns), and operates up to 150°C junction temperature - used in DC-DC converters and switching-mode power supplies.

For engineers reviewing the HER603G A0G datasheet, HER603G A0G pinout, HER603G A0G application, or HER603G A0G equivalent, key selection criteria include VRRM = 200 V, VF ≤ 1.0 V @ 6 A, trr ≤ 50 ns, RθJA = 37 °C/W, and R-6 package compatibility with through-hole PCB layouts requiring high surge robustness and thermal stability.

Technical Context

This device is a single-die, standard-recovery rectifier optimized for high-frequency switching applications where low conduction loss and fast turn-off are critical. Its glass-passivated junction ensures reliability under thermal cycling and humidity stress, while the pure tin-plated leads meet J-STD-002 solderability standards.

The HER603G A0G exhibits typical junction capacitance of 80 pF at 1 MHz and 4 V reverse bias, and maintains IR ≤ 10 µA at 25°C and ≤ 200 µA at 125°C - supporting stable blocking performance across automotive and industrial ambient temperature ranges.

Key Specifications

Pinout & Package

Package: R-6 axial leaded, UL 94V-0 molded compound, cathode indicated by band, weight ≈ 1.65 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH6L06S and MUR620CT, the HER603G A0G provides optimal balance of 200 V rating, 1.0 V VF, 50 ns trr, and compact R-6 through-hole form factor - making it ideal for cost-sensitive, space-constrained industrial and automotive auxiliary power designs where leaded reliability and ease of inspection matter.

Availability

HER603G A0G is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and freewheeling applications requiring stable component supply, long-lifecycle support, and RoHS/halogen-free compliance.

Supply support for HER603G A0G 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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors since 1979.

The HER60xG series was developed to deliver high-reliability, high-efficiency rectification for industrial power supplies and automotive subsystems - emphasizing ruggedized packaging, low VF, and AEC-Q101 qualification readiness.

FAQ

What is the maximum junction temperature rating for HER603G A0G?

The HER603G A0G has a maximum junction temperature (TJ(max)) of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version H2104). This rating allows operation in high-ambient environments such as enclosed industrial enclosures or under-hood automotive locations when proper thermal design is applied. Derating curves confirm usable current capacity down to 3.5 A at 100°C case temperature.

Does HER603G A0G have AEC-Q101 qualification?

The HER603G A0G itself is not AEC-Q101 qualified; however, the HER603GH variant - identical electrically and mechanically but marked with "H" suffix - is fully AEC-Q101 qualified. The "A0G" suffix denotes 700-piece ammo box packaging, not qualification status. For automotive applications, specify HER603GH to ensure compliance with stress test requirements including temperature cycling, HTRB, and ESD.

What is the reverse recovery time (trr) of HER603G A0G and how is it measured?

The HER603G A0G has a typical reverse recovery time (trr) of 50 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the electrical specifications table. This value reflects performance in high-frequency switching circuits and is validated using standardized test circuits shown in Figure 6 of the Taiwan Semiconductor datasheet. It is not guaranteed for all operating conditions but represents typical behavior at 25°C.

Can HER603G A0G replace HER602G or HER604G in an existing design?

HER603G A0G can replace HER602G (100 V VRRM) only if the circuit's peak reverse voltage remains ≤ 200 V - exceeding its 100 V rating risks avalanche failure. It can replace HER604G (300 V VRRM) only if 200 V blocking suffices; doing so reduces voltage margin and may compromise reliability in surge-prone applications. Forward characteristics (VF, trr) are identical across HER602G–HER604G, so conduction behavior remains consistent.

What does the "A0G" suffix mean in HER603G A0G?

The "A0G" suffix in HER603G A0G indicates packaging format: "A0" specifies 700-piece ammo box packaging, and "G" denotes green (halogen-free) molding compound compliant with IEC 61249-2-21. This differs from "HER603G" (same device, 1000-piece tape-and-reel) and "HER603GH" (AEC-Q101 qualified, tape-and-reel or ammo box). Electrical and thermal specs are unchanged across these variants.