Taiwan Semiconductor Corporation 2A02G-T

Overview

2A02G-T from Diodes Incorporated is a 2.0A glass passivated general-purpose rectifier diode with 100V peak repetitive reverse voltage (VRRM), 1.1V forward voltage at 2.0A, and 65A non-repetitive surge capability. It uses DO-15 package, features RoHS-compliant tin-plated leads, and is rated for operation from −65°C to +175°C ambient. It serves as primary AC/DC input rectification in offline power supplies.

For engineers reviewing the 2A02G-T datasheet, 2A02G-T pinout, 2A02G-T application, or 2A02G-T equivalent, key selection criteria include VRRM margin vs. line voltage peaks, thermal derating above 55°C ambient, IFSM tolerance for inrush events, and DO-15 PCB footprint compatibility in space-constrained designs.

Technical Context

This device operates as a single-phase, half-wave silicon rectifier optimized for 50/60Hz line-frequency applications with resistive or inductive loads. Its glass passivation ensures stable junction characteristics under humidity and thermal cycling, while the DO-15 axial leaded package supports through-hole mounting and manual rework.

Thermal performance is defined by RθJA = 60°C/W, requiring heatsinking or layout derating when ambient exceeds 55°C - per Fig. 1, average forward current drops to ~1.4A at 100°C ambient. Capacitance (CT = 40pF @ 1MHz, 4V) and leakage (IRM = 5µA @ 25°C, 100V) are specified for EMI-sensitive and low-power standby circuit design.

Key Specifications

Pinout & Package

Package: DO-15 molded plastic case (UL 94V-0), axial leads, cathode indicated by band. Weight ≈ 0.4 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar general-purpose rectifier applications.

Compared with 1N4002-T, 2A02G-T delivers double the continuous current in the same voltage class; versus ES2B, it trades faster recovery and SMT fit for lower cost, through-hole serviceability, and proven thermal stability in legacy designs.

Availability

2A02G-T is available at Aetrix Electronics and suitable for AC-DC adapters, industrial control power supplies, LED driver bulk rectification, and appliance main power conversion requiring stable component supply across production lifecycles.

Supply support for 2A02G-T 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the US.

The 2A01G–2A07G series targets cost-sensitive, high-volume rectification applications where reliability, thermal robustness, and standardized packaging are prioritized over ultra-fast switching.

FAQ

Is 2A02G-T suitable for capacitive-input filter applications?

Yes, but with 20% current derating per datasheet Note: maximum average forward current reduces to 1.6A when feeding a bulk capacitor directly from AC line. Layout must ensure adequate thermal relief on leads and avoid excessive trace length to minimize parasitic inductance during surge events.

What is the maximum allowable junction temperature during transient overload?

The absolute maximum junction temperature is +175°C. During a single 65A, 8.3ms surge, junction temperature rise depends on thermal mass and prior steady-state conditions; simulation or testing is required to confirm Tj stays within limit under worst-case ambient and power dissipation.

Can 2A02G-T replace 1N4002 in existing designs without modification?

No - although both have 100V VRRM, 2A02G-T has double the current rating (2.0A vs. 1.0A) and higher thermal mass. Direct replacement may cause overheating if board layout lacks thermal relief for the larger DO-15 body or if leads are not trimmed to 9.5mm for rated current.

Does 2A02G-T require derating at elevated ambient temperatures?

Yes - Fig. 1 shows linear derating from 2.0A at 55°C to zero at ~175°C. At 100°C ambient, rated current is ~1.4A. Derating must be applied based on actual measured case temperature, not just ambient, especially with enclosed or poorly ventilated enclosures.