1N4933-TP Equivalent & Substitute Parts

Part Overview

The 1N4933-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 50 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This component is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	200 ns
Current - Reverse Leakage @ Vr	5 µA @ 50 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 1N4933-TP is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 50 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, Axial
Operating Temperature - Junction: -55°C ~ 150°C
RoHS Status: ROHS3 Compliant

All identified substitute parts meet these criteria. Secondary parameters including reverse recovery time (trr), reverse leakage current, and junction capacitance may vary within acceptable ranges without affecting functional compatibility in standard rectification applications.

Parameter Comparison

Parameter	1N4933-TP (Main)	FR101G R1G	FR101T-G	PG100R_R2_00001
Manufacturer	Micro Commercial Co	Taiwan Semiconductor Corporation	Comchip Technology	Panjit International Inc.
Product Status	Obsolete	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	50 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	200 ns	150 ns	150 ns	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V	1 µA @ 50 V
Capacitance @ Vr, F	15pF @ 4V, 1MHz	10pF @ 4V, 1MHz	25pF @ 4V, 1MHz	12pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All three substitute parts—FR101G R1G, FR101T-G, and PG100R_R2_00001—are active products with full ROHS3 compliance and identical critical electrical specifications to the 1N4933-TP. Selection among these equivalents is based on the following factors:

FR101G R1G (Taiwan Semiconductor Corporation): Active status with standard packaging. Reverse recovery time of 150 ns represents improvement over the original 200 ns specification. Reverse leakage current matches the original 5 µA specification.

FR101T-G (Comchip Technology): Active status with Tape & Reel packaging. Reverse recovery time of 150 ns and reverse leakage current of 5 µA. Junction capacitance of 25pF is the highest among substitutes.

PG100R_R2_00001 (Panjit International Inc.): Active status with Tape & Reel packaging. Reverse recovery time of 150 ns with superior reverse leakage current specification of 1 µA, representing enhanced performance. REACH Unaffected status provides additional regulatory documentation.

All substitutes maintain electrical and mechanical compatibility with the 1N4933-TP across standard rectification applications. Secondary parameter variations do not affect functional equivalence in typical circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can FR101G R1G, FR101T-G, or PG100R_R2_00001 be used as direct replacements for 1N4933-TP?

A: Yes. All three substitute parts meet the critical electrical specifications: 50 V reverse voltage rating, 1 A average rectified current, 1.3 V forward voltage at 1 A, fast recovery speed classification, and identical through-hole DO-41 package configuration. Operating temperature range and RoHS3 compliance are identical.

Q: What is the difference between the substitute parts?

A: The primary differences are manufacturer identity and secondary electrical parameters. All three maintain identical core specifications (voltage, current, forward voltage, speed classification, package, and temperature range). Reverse recovery time is 150 ns for all substitutes versus 200 ns for the original. Reverse leakage current ranges from 1 µA to 5 µA, and junction capacitance varies from 10pF to 25pF. These variations do not affect functional compatibility in standard rectification circuits.

Q: Does packaging format affect substitution?

A: The 1N4933-TP uses standard through-hole DO-41 packaging. FR101G R1G is supplied in standard packaging, while FR101T-G and PG100R_R2_00001 are supplied in Tape & Reel format. All three use identical DO-204AL/DO-41 axial package geometry, ensuring mechanical compatibility in through-hole PCB applications. Tape & Reel format affects only component handling and assembly processes, not electrical or mechanical fit.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All three substitute parts carry ROHS3 Compliant certification, matching the original 1N4933-TP specification.

Q: What is the Moisture Sensitivity Level for these parts?

A: All parts, including the original and all substitutes, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.

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