Diodes Incorporated 1N4004G-T

Overview

1N4004G-T from Diodes Incorporated is a 1 A, 400 V standard rectifier diode in a DO-41 axial through-hole package. It is a member of the widely used 1N400x rectifier family and is suited to line-frequency rectification, blocking, protection, and general-purpose power paths.

For engineers reviewing the 1N4004G-T datasheet, 1N4004G-T pinout, 1N4004G-T application, or 1N4004G-T equivalent, this diode is most relevant for bridge rectifiers, adapters, appliance controls, industrial panels, charging circuits, relay protection, and repair programs requiring 400 V reverse-voltage capability, 1 A average rectified current, 30 A surge rating, and DO-41 leaded assembly.

Technical Context

1N4004G-T is optimized for robust standard rectification rather than high-speed switching. It handles forward conduction in rectifier paths and blocks reverse voltage up to its 400 V class rating, making it a common choice in low-frequency power conversion and protection circuits.

The DO-41 axial package is mechanically different from surface-mount rectifiers. It can be hand-soldered, wave-soldered, or mounted with lead forming in legacy boards. Engineers should consider lead spacing, lead forming stress, thermal rise, and available board area when replacing or qualifying this diode.

Key Specifications

Pinout & Package

1N4004G-T is a two-terminal axial rectifier. The banded end marks the cathode, and the unbanded end is the anode. Correct orientation is essential in bridge rectifiers, series blocking positions, and clamp circuits because reversing the diode changes the current path.

Key Features

• 1 A standard rectifier diode in DO-41 axial package.
• 400 V repetitive peak reverse-voltage class.
• 1.0 V maximum forward voltage at 1 A.
• 30 A non-repetitive surge-current capability.
• Low reverse leakage rating for blocking operation.
• Standard recovery behavior for line-frequency and general rectifier circuits.
• Axial through-hole format suited to legacy boards and service repair.
• Part of the broad 1N400x general-purpose rectifier family.

Applications

Equivalent & Alternatives

When evaluating 1N4004G-T equivalent devices, compare reverse-voltage rating, forward current, surge rating, recovery behavior, axial footprint, lead diameter, body size, compliance suffix, and whether the design can accept another 1N400x voltage grade.

Quality

1N4004G-T should be sourced as original Diodes Incorporated axial rectifiers through traceable and controlled supply channels. Quality checks may include DO-41 body inspection, cathode-band verification, lead finish and straightness inspection, solderability testing, forward-voltage screening, reverse-leakage testing, reel or bulk label review, and incoming inspection for through-hole rectifier assembly.

Availability

1N4004G-T is available at Aetrix Electronics and suitable for bridge rectifiers, appliance controls, adapters, relay protection, charging circuits, industrial panels, power-supply repair, and legacy through-hole boards requiring a 1 A, 400 V DO-41 standard rectifier.

Supply support may include scheduled delivery planning, volume procurement support, BOM continuity assistance, traceable sourcing management, and lifecycle availability coordination for repair organizations, power-supply manufacturers, appliance producers, industrial equipment builders, and contract manufacturers.

For production deployment, confirming the DO-41 footprint, cathode-band orientation, 400 V reverse rating, 1 A current margin, surge exposure, recovery-speed requirement, solder process, lead forming method, and sourcing continuity helps reduce rectifier qualification risk.

Manufacturer

Diodes Incorporated supplies rectifiers, Schottky diodes, Super Barrier Rectifiers, protection products, transistors, MOSFETs, analog ICs, logic devices, and power-management semiconductors. 1N4004G-T belongs to the long-established 1N400x standard rectifier family offered by Diodes Incorporated.

FAQ

What is 1N4004G-T used for?

1N4004G-T is used for standard rectification, reverse blocking, relay protection, and low-frequency power conversion. The 1 A current rating and 400 V reverse-voltage class make 1N4004G-T suitable for small bridge rectifiers, adapters, appliance boards, chargers, and through-hole repair work.

What package does 1N4004G-T use?

1N4004G-T uses a DO-41 axial through-hole package. The banded lead is the cathode and the opposite lead is the anode. When installing 1N4004G-T, lead spacing, lead forming, solder process, body clearance, and polarity orientation should be checked carefully.

Is 1N4004G-T suitable for high-frequency switching?

1N4004G-T is a standard rectifier and is mainly suited to line-frequency or general-purpose rectifier paths. It can work in many protection circuits, but 1N4004G-T is usually not the first choice for high-frequency converter nodes that need ultrafast or Schottky behavior.

What voltage does 1N4004G-T block?

1N4004G-T is a 400 V class rectifier. The circuit should be reviewed for RMS voltage, peak reverse voltage, ringing, surge events, and safety margin. Keeping enough reverse-voltage headroom helps 1N4004G-T remain reliable during abnormal or transient conditions.

What should be checked before replacing 1N4004G-T?

Before replacing 1N4004G-T, check current rating, reverse-voltage rating, surge current, recovery speed, DO-41 package dimensions, lead pitch, cathode-band orientation, thermal rise, leakage, agency or compliance requirements, and whether another 1N400x voltage grade is acceptable in the same circuit.