Taiwan Semiconductor Corporation 1N4001G R0G

Overview

1N4001G from Taiwan Semiconductor is a glass-passivated silicon standard rectifier diode rated for 1 A average forward current and 50 V repetitive peak reverse voltage, with 30 A surge capability and 1 V max forward voltage at 1 A, used in low-voltage DC-DC converters and general-purpose AC/DC front-end rectification.

For engineers reviewing the 1N4001G datasheet, 1N4001G pinout, 1N4001G application, or 1N4001G equivalent, key selection factors include its DO-41 package compatibility, AEC-Q101 qualification option, 150°C junction temperature rating, and verified performance under 8.3 ms half-sine surge conditions.

Technical Context

This discrete rectifier operates as a unidirectional current-conducting device with a single p-n junction, optimized for line-frequency and low-frequency switching applications. Its glass passivation ensures stable surface characteristics and enhanced moisture resistance compared to epoxy-passivated variants.

The 1N4001G exhibits a typical junction capacitance of 10 pF at 1 MHz and 4 V reverse bias, and maintains reverse leakage ≤5 µA at 25°C and ≤100 µA at 125°C - critical for low-power standby circuits and EMI-sensitive designs.

Key Specifications

Pinout & Package

Package: DO-204AL (DO-41), axial leaded, glass-passivated die in molded epoxy case with cathode band marking. Leads are pure tin-plated and solderable per J-STD-002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4001FS and 1N4001-E3/54, the 1N4001G offers optional AEC-Q101 qualification - a decisive factor for automotive body electronics - while maintaining identical electrical specs and DO-41 mechanical compatibility across all three parts.

Availability

1N4001G is available at Aetrix Electronics and suitable for AC/DC wall adapters, industrial control power supplies, and automotive body electronics requiring stable component supply and long-term BOM continuity.

Supply support for 1N4001G 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 semiconductor manufacturer specializing in discrete power devices, analog ICs, and optoelectronics, headquartered in Hsinchu Science Park.

The 1N4001G belongs to TSC's standard rectifier family designed for cost-effective, high-reliability AC/DC conversion in consumer, industrial, and automotive power systems - emphasizing robustness, manufacturability, and regulatory compliance.

FAQ

What is the maximum junction temperature rating for the 1N4001G?

The 1N4001G has a maximum junction temperature (TJ max) of 150°C, allowing sustained operation in thermally constrained environments such as sealed industrial enclosures or automotive under-hood modules. This rating is validated per JEDEC test conditions and supports derated current handling up to 105°C ambient with appropriate PCB copper area. The 1N4001G must be mounted with adequate thermal relief to avoid exceeding this limit during peak load conditions.

Does the 1N4001G have AEC-Q101 qualification?

The base 1N4001G is not automatically AEC-Q101 qualified; however, Taiwan Semiconductor offers an AEC-Q101-qualified variant identified by the ordering code 1N4001GH. This version undergoes full automotive stress testing including temperature cycling, HAST, and mechanical shock. For automotive applications, specify 1N4001GH - the 1N4001G itself is intended for commercial and industrial use unless explicitly ordered with the 'H' suffix.

What is the forward voltage drop of the 1N4001G at rated current?

The 1N4001G has a maximum forward voltage (VF) of 1.0 V at 1 A forward current and 25°C junction temperature, measured under pulsed conditions (PW = 0.3 ms). At higher temperatures or continuous DC operation, VF decreases slightly due to negative temperature coefficient. This 1 V drop defines conduction loss boundaries in 1N4001G-based designs - e.g., 1 W dissipation at full load - guiding heatsinking and efficiency calculations.

What package type does the 1N4001G use, and is it compatible with standard DO-41 footprints?

The 1N4001G uses the DO-204AL (DO-41) axial package with standardized dimensions and lead spacing. It is fully compatible with industry-standard DO-41 footprints and automated assembly processes, including wave soldering and reflow-compatible lead tinning (J-STD-002 compliant). The cathode band marking aligns with IPC-7351 polarity conventions, ensuring correct orientation during placement of the 1N4001G on PCBs.

How does the 1N4001G compare to higher-voltage members like the 1N4007G?

The 1N4001G shares identical package, thermal, and surge ratings with the 1N4007G but differs exclusively in VRRM (50 V vs. 1000 V) and VR(RMS) (35 V vs. 700 V). All other parameters - IF, IFSM, VF, TJ max, and CJ - are unchanged across the 1N4001G–1N4007G series. Therefore, the 1N4001G is optimized for low-voltage systems where lower capacitance and tighter VF tolerance improve efficiency, unlike the 1N4007G which prioritizes high-voltage isolation.