Taiwan Semiconductor Corporation 6A20G

Overview

6A20G from Taiwan Semiconductor is a glass-passivated standard rectifier diode with 200 V repetitive peak reverse voltage (V_RRM), 6 A average forward current (I_F), and 250 A surge capability (I_FSM), designed for DC-DC converters and switching-mode inverters requiring low forward voltage (1.0 V at 6 A, 25°C) and high reliability.

For engineers reviewing the 6A20G datasheet, 6A20G pinout, 6A20G application, or 6A20G equivalent, key selection considerations include its R-6 axial package, 150°C maximum junction temperature, 35°C/W junction-to-ambient thermal resistance, and AEC-Q101 qualification availability in H-suffix variants.

Technical Context

The 6A20G operates as a single-die, unidirectional silicon rectifier with a cathode-banded polarity indicator and pure tin-plated leads compliant with J-STD-002 solderability. Its glass-passivated junction ensures stable performance under thermal cycling and humidity stress.

Electrical behavior is defined by a typical forward voltage of 1.0 V at 6 A and 25°C, reverse leakage of ≤10 µA at 25°C and rated V_RRM, and junction capacitance of 60 pF at 1 MHz and 4.0 V reverse bias - parameters confirmed across the 6A20G–6A100G voltage-grade family.

Key Specifications

Pinout & Package

Package: R-6 axial leaded package with molded UL 94V-0 compound, cathode indicated by band, 1.65 g typical weight, and pure tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH6S02 and GBU6K, the 6A20G offers the lowest forward voltage in an industry-standard R-6 axial package, enabling direct replacement in existing through-hole power supplies without layout changes while maintaining superior thermal performance at elevated ambient temperatures.

Availability

6A20G is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose rectification requiring stable component supply across industrial, automotive, and renewable energy programs.

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 global power electronics and automotive markets since 1979.

The 6A05G–6A100G series was developed to deliver cost-optimized, high-reliability standard rectifiers with AEC-Q101 qualification paths for automotive and industrial power conversion systems demanding consistent V_F, surge robustness, and long-term stability.

FAQ

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

The 6A20G has a maximum junction temperature (T_J) rating of 150°C, verified per JEDEC JESD22-A108. This allows operation in high-ambient environments such as enclosed power supplies or under-hood automotive locations when thermal design maintains junction temperature below this limit. Derating curves in the datasheet define safe I_F limits above 75°C case temperature.

Is the 6A20G RoHS and halogen-free compliant?

Yes, the 6A20G is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability standards, and terminals use pure tin plating qualified to J-STD-002 for solderability. These compliance attributes are confirmed in Taiwan Semiconductor's official product documentation for the 6A05G–6A100G family.

Does the 6A20G have AEC-Q101 qualification?

The base 6A20G is not AEC-Q101 qualified, but the variant 6A20GH is explicitly qualified per AEC-Q101 Rev D for automotive applications. The "H" suffix denotes qualification, and both share identical electrical and thermal specifications. Engineers selecting for automotive use must specify 6A20GH to ensure compliance with stress-test requirements.

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

The datasheet specifies forward voltage only at 25°C (1.0 V typ) and does not provide a guaranteed value at 125°C. However, typical V_F increases ~2 mV/°C for silicon rectifiers; extrapolating yields ~1.2 V at 125°C. For precise design, engineers should consult the 6A20G's Fig.4 Typical Forward Characteristics curve or validate with thermal simulation using R_θJA = 35°C/W.

Can the 6A20G replace the 6A10G in a 100 V circuit?

No - the 6A10G is rated for 100 V V_RRM, while the 6A20G is rated for 200 V V_RRM. Though electrically compatible in circuits operating ≤100 V, substitution is acceptable only if board layout, thermal design, and reliability targets align with the 6A20G's characteristics. The 6A20G's lower V_F (1.0 V vs. 1.1 V for 6A10G) may improve efficiency but requires verification of surge and thermal margins in the target application.