1N4002 Diode: Datasheet, Equivalent, Features, and Replacements

1N4002 Diode Complete Guide

Overview

The 1N4002 diode is a widely used general-purpose silicon rectifier diode with a maximum reverse voltage rating of 100V and a forward current capacity of 1A. It belongs to the renowned 1N400x series, which is commonly found in AC to DC rectification, polarity protection, and freewheeling circuits. Despite its popularity, the 1N4002 has been officially marked as obsolete by many semiconductor manufacturers due to the shift toward newer, more efficient technologies.

1N4002 Diode Datasheet and Key Specifications

• Reverse Voltage (VR): 100V
• Forward Current (IF): 1A
• Peak Surge Current: 30A
• Reverse Recovery Time: 2μs
• Package: DO-41

Download Vishay 1N4002 Datasheet (PDF)

Is 1N4002 Discontinued?

Yes, the 1N4002 diode has been discontinued by major brands like ON Semiconductor, Vishay, and others. The primary reason is the rise of fast recovery, high-efficiency diodes that offer better switching speeds, lower leakage, and improved thermal characteristics. Thus, engineers, repair shops, and procurement teams need to shift to alternative parts for ongoing or future projects.

Recommended Replacements

Due to the discontinuation of the 1N4002, here is a curated list of recommended replacement diodes that match or exceed the performance of the original device while ensuring broader market availability:

• EGP10B - High-speed 1A diode with 50ns recovery time
• MUR210RLG - Ultra-fast 2A diode, 35ns, robust option
• UF4002-M3/54 - Preferred drop-in with 75ns recovery time
• SF4002-TR - Fast recovery, stable supply
• 1N4002-TP - Improved version, legacy compatible
• UF4002-E3/53 - Fast recovery, widely approved
• RMPG06BHE3_A/54 - High-speed, stable industrial-grade alternative
• BYT54B-TAP - General-purpose replacement with enhanced specs

Comparison Table

Product Model	Product Image	Product Description	Data Download	Purchase Link
EGP10B		EGP10B is a fast recovery diode with high efficiency and low leakage, suitable for rectification and freewheeling applications.	Datasheets PDF	Buy Now
MUR210RLG		MUR210RLG offers ultra-fast recovery and high surge capability, ideal for snubber and boost converter circuits.	Datasheets PDF	Buy Now
1N4002GP-E3/73		1N4002GP-E3/73 is a general-purpose rectifier diode for low frequency rectification in adapters and power supplies.	Datasheets PDF	Buy Now
1N4001-TP		1N4001-TP is a standard rectifier diode, widely used in AC to DC conversion applications.	Datasheets PDF	Buy Now
1N4002-TP		1N4002-TP is used in general rectification circuits, featuring low leakage and high reliability.	Datasheets PDF	Buy Now
1N6077		1N6077 is a high-reliability fast recovery diode for demanding industrial and military applications.	Datasheets PDF	Buy Now
BYT54B-TAP		BYT54B-TAP is optimized for high frequency rectification, suitable for switched-mode power supplies and PFC circuits.	Datasheets PDF	Buy Now
MPG06BHE3_A/54		MPG06BHE3_A/54 is a high-efficiency fast recovery rectifier in compact package for industrial applications.	Datasheets PDF	Buy Now
RMPG06B-E3/53		RMPG06B-E3/53 is a compact, high-speed rectifier ideal for power factor correction and SMPS circuits.	Datasheets PDF	Buy Now
RMPG06BHE3_A/54		RMPG06BHE3_A/54 features ultra-fast recovery and is designed for high frequency and high efficiency applications.	Datasheets PDF	Buy Now
SF4002-TR		SF4002-TR is a surface mount ultra-fast recovery diode ideal for SMPS and DC-DC converters.	Datasheets PDF	Buy Now
UF4002-E3/53		UF4002-E3/53 is an ultra-fast recovery diode with high reverse voltage, used in industrial power systems.	Datasheets PDF	Buy Now
UF4002-M3/54		UF4002-M3/54 is designed for ultra-fast switching in rectification and freewheeling circuits with high temperature capability.	Datasheets PDF	Buy Now
UF4002-M3/73		UF4002-M3/73 is a high-reliability ultra-fast diode for high frequency applications and harsh environments.	Datasheets PDF	Buy Now

Applications & Considerations

• AC-DC rectification in adapters, power supplies, and chargers
• Reverse polarity protection in circuits
• Freewheeling diode in inductive load switching
• Snubber circuits and voltage clamping applications

Important Considerations:

• When replacing with fast recovery diodes like UF4002, verify circuit stability to prevent oscillation or EMI noise.
• Review PCB layout and thermal considerations, as some replacements may require different footprints or heat sinking.
• Ensure replacements meet the necessary quality standards, especially for automotive, aerospace, or industrial applications.

FAQs

Q: Can I replace 1N4002 with 1N4007?

A: Yes, technically you can, as 1N4007 supports up to 1000V and is backward compatible. However, if you aim for better efficiency and switching performance, UF4002 or EGP10B are preferred.

Q: Which is the best drop-in fast recovery replacement for 1N4002?

A: The UF4002-M3/54 and EGP10B are the most recommended for fast recovery with excellent thermal and electrical performance.

Q: Why was the 1N4002 discontinued?

A: The demand for more efficient, compact, and fast-switching devices has rendered older standard recovery diodes like 1N4002 obsolete in most new designs.

Why Was 1N4002 Discontinued?

The discontinuation of the 1N4002 diode reflects the overall market and technological trends:

• Efficiency Demands: Newer power management systems require lower losses and higher efficiency.
• Faster Switching Requirements: Modern circuits operate at higher frequencies, making slow recovery diodes unsuitable due to increased losses and heating.
• Compact and Cost-effective Designs: Fast recovery and Schottky diodes offer compact packaging with better thermal performance, allowing manufacturers to reduce BOM costs while improving performance.
• Environmental Regulations: New RoHS and REACH standards, along with industry qualification protocols, favor modern semiconductor designs with enhanced reliability and sustainability.