Taiwan Semiconductor Corporation 1N4004GHR1G

Overview

1N4004GHR1G from Taiwan Semiconductor is a glass-passivated silicon standard rectifier diode rated for 1 A average forward current and 400 V repetitive peak reverse voltage, with 30 A surge capability and 1 V max forward voltage at 1 A, used in DC-DC converters and switching inverters.

For engineers reviewing the 1N4004GHR1G datasheet, 1N4004GHR1G pinout, 1N4004GHR1G application, or 1N4004GHR1G equivalent, key selection factors include its DO-41 package, AEC-Q101 qualification (indicated by 'H' suffix), 150°C junction temperature rating, and 5 µA max reverse leakage at 25°C.

Technical Context

This discrete rectifier operates as a unidirectional current-conducting device with a single p-n junction, optimized for low forward voltage drop and high surge tolerance in line-frequency and SMPS applications. Its glass-passivated chip ensures stable performance under thermal cycling and humidity stress.

The 1N4004GHR1G exhibits 10 pF typical junction capacitance at 4 V reverse bias and 1 MHz, enabling moderate-speed rectification up to ~100 kHz. Thermal resistance from junction-to-ambient is 80°C/W in free-air conditions, limiting continuous power dissipation to ~1.56 W at 25°C ambient.

Key Specifications

Pinout & Package

Package: DO-204AL (DO-41), axial leaded, glass-passivated, RoHS-compliant, halogen-free molding compound (UL 94V-0), cathode indicated by band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1R04 and 1N4004-T, the 1N4004GHR1G uniquely combines AEC-Q101 qualification, glass passivation, and halogen-free compliance-making it the preferred choice for automotive and harsh-environment rectification where reliability and regulatory alignment are mandatory.

Availability

1N4004GHR1G is available at Aetrix Electronics and suitable for AC/DC power adapters, automotive body control modules, and industrial motor drive auxiliary supplies requiring stable component supply and long-term manufacturability.

Supply support for 1N4004GHR1G 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 industrial, automotive, and consumer markets since 1979.

The 1N400xG series targets cost-effective, high-reliability rectification in legacy and new-design power supplies, emphasizing robustness, regulatory compliance, and broad voltage coverage across seven standardized ratings.

FAQ

What does the 'H' and 'R1G' suffix indicate in 1N4004GHR1G?

The 'H' denotes AEC-Q101 qualification for automotive applications, and 'R1G' specifies tape-and-reel packaging (5,000 units per reel) with green (halogen-free) molding compound. This distinguishes 1N4004GHR1G from non-qualified variants like 1N4004G and confirms full compliance with automotive reliability and environmental standards.

Is 1N4004GHR1G pin-compatible with other 1N400x diodes in DO-41 packages?

Yes - 1N4004GHR1G uses the standard DO-204AL (DO-41) axial package with identical mechanical dimensions and anode/cathode polarity marking. It is physically interchangeable with all 1N4001G–1N4007G variants, though electrical ratings (especially VRRM and IR) differ across the family.

What is the maximum allowable power dissipation for 1N4004GHR1G at 70°C ambient?

At 70°C ambient, derated power dissipation is calculated as (150°C − 70°C) / 80°C/W = 1.0 W. Since VF ≤ 1.0 V at 1 A, the actual dissipation remains within limit (1.0 W), confirming safe operation without heatsinking in typical enclosed power supplies.

Does 1N4004GHR1G support reflow soldering?

No - 1N4004GHR1G is designed for through-hole mounting and wave or hand soldering. Its DO-41 package is not rated for reflow profiles; peak temperature exposure beyond 260°C risks internal delamination and parameter shift. For SMT alternatives, consider SMA/SMB-packaged equivalents like M1S or ES1D.

How does the 5 µA reverse leakage of 1N4004GHR1G affect high-impedance bias networks?

At 25°C, 1N4004GHR1G's ≤5 µA reverse leakage introduces negligible error in bias networks with impedances ≤100 kΩ. However, at 125°C (≤100 µA), it may cause measurable offset in precision references or high-Z feedback paths - design margins should account for worst-case IR across the full operating temperature range.