Taiwan Semiconductor Corporation 6A20G B0G

Overview

6A20G from Taiwan Semiconductor is a 6 A, 200 V repetitive peak reverse voltage (V_RRM) glass-passivated standard rectifier diode in R-6 package, featuring 1.0 V forward voltage at 6 A and 250 A surge capability - used in DC-DC converters and switching inverters for industrial power supplies.

For engineers reviewing the 6A20G datasheet, 6A20G pinout, 6A20G application, or 6A20G equivalent, key selection criteria include verified V_RRM = 200 V, I_F = 6 A continuous rating, T_J max = 150 °C, R_θJA = 35 °C/W thermal resistance, and R-6 mechanical compatibility with through-hole PCB layouts.

Technical Context

This single-die standard rectifier operates as a unidirectional current switch with cathode-band polarity marking. Its glass-passivated junction ensures stable reverse leakage (<10 µA at 25 °C) and high reliability under repeated surge stress (8.3 ms half-sine, I_FSM = 250 A).

The R-6 package provides UL 94V-0 mold compound, pure tin-plated leads compliant with J-STD-002, and meets JESD 201 Class 2 whisker resistance. Junction-to-ambient thermal resistance is fixed at 35 °C/W under standard mounting conditions.

Key Specifications

Pinout & Package

Package: R-6 axial leaded, molded plastic case with cathode band marking; UL 94V-0 rated, 1.65 g typical weight, pure tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH6S06D and MUR620, the 6A20G offers lowest V_F among 200 V-class axial rectifiers and optimal thermal performance per unit volume in R-6 - making it preferred for space-constrained, thermally demanding 6 A DC-DC front ends.

Availability

6A20G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial AC-DC front-ends requiring stable component supply, long-lifecycle availability, and AEC-Q101-compatible variants (6A20GH) for automotive-adjacent designs.

Supply support for 6A20G 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 industrial, computing, and consumer markets since 1979.

The 6A05G–6A100G series was designed specifically for cost-sensitive, high-reliability power conversion applications where standardized R-6 packaging, glass-passivated junctions, and consistent surge robustness are critical - especially in telecom, industrial automation, and LED lighting power supplies.

FAQ

What is the maximum junction temperature rating for the 6A20G?

The 6A20G has a maximum junction temperature (T_J) rating of +150 °C, confirmed in the Absolute Maximum Ratings table. This allows reliable operation in enclosed industrial environments where ambient temperatures may reach 85 °C and power dissipation generates additional thermal load. Derating curves show usable current drops linearly above 25 °C ambient, with 6 A maintained up to ~70 °C ambient under standard R-6 mounting.

Does the 6A20G have AEC-Q101 qualification?

The base 6A20G is not AEC-Q101 qualified; however, the variant 6A20GH (with "H" suffix) is explicitly listed in the Ordering Information as AEC-Q101 qualified. The 6A20G shares identical electrical and thermal specifications with 6A20GH, differing only in qualification testing and traceability documentation - making 6A20GH suitable for automotive-adjacent applications like EV charging auxiliary supplies.

What is the forward voltage of the 6A20G at 6 A and 125 °C junction temperature?

The datasheet specifies V_F = 1.0 V typ. at I_F = 6 A and T_J = 25 °C. While no exact value is given at 125 °C, Figure 4 (Typical Forward Characteristics) shows V_F increases to approximately 0.85 V at 125 °C for the 6A20G–6A100G group - due to negative temperature coefficient of silicon diodes. This lower V_F at elevated temperature reduces thermal runaway risk during sustained overload.

Is the 6A20G compatible with lead-free reflow soldering?

Yes - the 6A20G uses pure tin-plated leads compliant with J-STD-002 for solderability, and its R-6 package molding compound meets UL 94V-0 flammability rating. It supports both wave soldering and hand soldering. Though not rated for peak reflow profiles exceeding 260 °C, it is compatible with standard lead-free assembly processes when mounted axially with adequate thermal relief and preheat control.

What does the "G" suffix indicate in the 6A20G part number?

The "G" suffix in 6A20G indicates green (halogen-free) molding compound per IEC 61249-2-21, confirmed in the Features and Ordering Information sections. It does not denote packaging type or qualification level. All variants in the 6A05G–6A100G family use "G" to signify halogen-free construction; the "H" suffix (e.g., 6A20GH) is separate and denotes AEC-Q101 qualification.