1N4947-TP Equivalent & Substitute Parts

Part Overview

The 1N4947-TP is a general-purpose rectifier diode rated for 800 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts maintain electrical and mechanical compatibility while sourcing from manufacturers with active product lines.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	800 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr)	250 ns
Current - Reverse Leakage @ Vr	5 µA @ 800 V
Capacitance @ Vr, F	15 pF @ 4 V, 1 MHz
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 1N4947-TP is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

Voltage - DC Reverse (Vr) (Max): 800 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A
Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, Axial
Operating Temperature - Junction: -55°C ~ 150°C
RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalent: Parts from the same manufacturer (Micro Commercial Co) with identical electrical specifications and active product status.

Parametric Equivalents: Parts from alternative manufacturers (Taiwan Semiconductor Corporation, Comchip Technology) that meet or exceed the electrical performance requirements and maintain mechanical compatibility through the DO-41 package form factor.

Parameter Comparison

Parameter	1N4947-TP	1N4947GP-TP	FR106G	FR106G R1G	FR106T-G
Manufacturer	Micro Commercial Co	Micro Commercial Co	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Comchip Technology
Product Status	Obsolete	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	800 V	800 V	800 V
Current - Average Rectified (Io)	1 A	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	1.3 V @ 1 A
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr)	250 ns	250 ns	500 ns	500 ns	500 ns
Current - Reverse Leakage @ Vr	5 µA @ 800 V	5 µA @ 800 V	5 µA @ 800 V	5 µA @ 800 V	5 µA @ 800 V
Capacitance @ Vr, F	15 pF @ 4 V, 1 MHz	15 pF @ 4 V, 1 MHz	10 pF @ 4 V, 1 MHz	10 pF @ 4 V, 1 MHz	15 pF @ 4 V, 1 MHz
Mounting Type	Through Hole	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	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-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	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Type	Bulk	Tape & Reel (TR)	Cut Tape (CT)	Not Specified	Tape & Reel (TR)

Engineering Selection Recommendations

1N4947GP-TP is the primary substitute for the obsolete 1N4947-TP. Both parts are manufactured by Micro Commercial Co and share identical electrical specifications. The 1N4947GP-TP maintains active product status and is available in Tape & Reel packaging, suitable for automated assembly processes. This part provides direct functional replacement with no electrical parameter deviations.

FR106T-G (Comchip Technology) and FR106G (Taiwan Semiconductor Corporation) are parametric equivalents that satisfy all critical electrical requirements. Both parts maintain the 800 V reverse voltage rating, 1 A average rectified current, and 1.3 V forward voltage specification. The reverse recovery time specification of 500 ns for these parts exceeds the 250 ns of the original 1N4947-TP, indicating improved switching characteristics. Capacitance values of 10 pF are lower than the original 15 pF specification. Both FR106 variants are ROHS3 compliant and operate across the identical temperature range. FR106T-G is available in Tape & Reel packaging; FR106G is available in Cut Tape packaging.

FR106G R1G is an alternative variant of the FR106 series with identical electrical specifications to FR106G, available in unspecified packaging configuration.

All substitute parts maintain through-hole mounting compatibility with the DO-41 package form factor and are suitable for direct board-level replacement in applications requiring 800 V, 1 A rectification.

Frequently Asked Questions (FAQ)

Q: Can 1N4947GP-TP be used as a direct replacement for 1N4947-TP?

A: Yes. The 1N4947GP-TP is manufactured by the same company (Micro Commercial Co) and shares identical electrical specifications with the obsolete 1N4947-TP. Both parts are rated for 800 V reverse voltage, 1 A average rectified current, and 1.3 V forward voltage at 1 A. The primary difference is product status: 1N4947GP-TP is active while 1N4947-TP is obsolete.

Q: What is the difference between FR106G and FR106T-G?

A: FR106G and FR106T-G are both 800 V, 1 A general-purpose rectifier diodes with identical electrical specifications. The primary difference is packaging: FR106T-G is supplied in Tape & Reel format suitable for automated assembly, while FR106G is supplied in Cut Tape format. Both are manufactured to the same electrical standards and are mechanically compatible with the DO-41 package.

Q: Are there electrical differences between the 1N4947-TP and FR106 series parts?

A: The reverse recovery time (trr) differs between part families. The 1N4947-TP specifies 250 ns, while FR106G and FR106G R1G specify 500 ns. This indicates the FR106 series has a slower recovery characteristic. Capacitance at 4 V, 1 MHz also differs: 1N4947-TP and FR106T-G specify 15 pF, while FR106G and FR106G R1G specify 10 pF. All parts maintain identical voltage, current, and forward voltage ratings.

Q: Can FR106 parts be used in applications originally designed for 1N4947-TP?

A: FR106 parts meet all critical electrical parameters for 800 V, 1 A rectification and maintain mechanical compatibility through the DO-41 package. The slower reverse recovery time of FR106 parts (500 ns versus 250 ns) represents improved switching performance in most applications. Lower capacitance values (10 pF versus 15 pF) may benefit high-frequency circuits. Both characteristics are compatible with applications designed for the 1N4947-TP.

Q: What packaging options are available for substitute parts?

A: 1N4947GP-TP is available in Tape & Reel (TR) packaging. FR106T-G is available in Tape & Reel (TR) packaging. FR106G is available in Cut Tape (CT) packaging. FR106G R1G packaging is not specified in available documentation. Selection between packaging types depends on assembly process requirements and volume considerations.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (1N4947GP-TP, FR106G, FR106G R1G, and FR106T-G) are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

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