Diodes Incorporated D1G-T

Overview

D1G-T from Diodes Incorporated is a 1.0A glass passivated general-purpose rectifier diode with 50V peak repetitive reverse voltage (VRRM), 1.0V forward voltage at 1.0A (VFM), and 30A non-repetitive surge capability (IFSM), used in AC/DC input stage rectification for low-power offline power supplies and adapter circuits.

For engineers reviewing the D1G-T datasheet, D1G-T pinout, D1G-T application, or D1G-T equivalent, key selection criteria include its T-1 axial package compatibility, 100°C/W junction-to-ambient thermal resistance, 2.0µs reverse recovery time, and RoHS-compliant tin-plated terminals suitable for wave and reflow soldering per MIL-STD-202.

Technical Context

This device operates as a single-phase, half-wave silicon rectifier optimized for resistive or inductive loads at 60Hz. Its glass passivated die construction ensures stable reverse leakage (5.0µA at 25°C) and robust surge tolerance up to 30A for 8.3ms half-sine transients.

The T-1 molded plastic case (UL 94V-0 rated) provides mechanical protection and electrical isolation, while the cathode band marking and 0.13g mass support manual and automated assembly. Derating is required for capacitive loads (−20% current rating).

Key Specifications

Pinout & Package

Package: T-1 axial leaded molded plastic case (UL 94V-0), 2.60–3.20 mm body diameter, 25.40 mm minimum lead length, cathode identified by band marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4001-T and RS1A, D1G-T offers superior long-term stability via glass passivation and optimal thermal management in axial T-1 form factor, making it preferred for cost-sensitive, space-constrained, and environmentally demanding industrial applications.

Availability

D1G-T is available at Aetrix Electronics and suitable for AC-DC wall adapters, low-power LED drivers, and industrial control power supplies requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.

Supply support for D1G-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, specializing in high-reliability power management, signal integrity, and protection solutions.

D1G-T belongs to the D1G–D7G series of glass passivated rectifiers designed specifically for cost-effective, high-yield AC input rectification in consumer, industrial, and appliance power supplies where long-term reliability under thermal and humidity stress is critical.

FAQ

Is D1G-T suitable for capacitive-input filter applications?

No-capacitive loads require 20% derating of the average forward current rating per the datasheet. At 1.0A nominal IO, this reduces usable current to 0.8A. For high-capacitance bulk input stages, consider devices with higher IO ratings or use inductive input filters instead.

What is the maximum operating temperature for D1G-T in free air?

The junction temperature must not exceed +150°C. With RθJA = 100°C/W and maximum ambient of +75°C, the absolute maximum continuous power dissipation is 0.75W (calculated as (150 − 75)/100). At 1.0V VFM, this corresponds to 0.75A DC current in free-air conditions.

Does D1G-T have a specified reverse recovery charge (Qrr)?

No-Qrr is not specified in DS29001 Rev. 5. Only trr = 2.0µs is provided, measured under defined conditions (IF = 0.5A, IR = 1A, Irr = 0.25A). For soft-recovery or low-Qrr requirements, consult Diodes' fast-recovery or ultrafast rectifier families such as the FRED Pt series.

Can D1G-T be used in parallel for higher current handling?

Not recommended-silicon parameter variation between units causes current imbalance. The datasheet does not specify matching tolerances for VFM or thermal resistance. Parallel operation requires external ballasting resistors or active current-sharing circuitry, increasing cost and complexity.