1N4935-TP Equivalent & Substitute Parts

Part Overview

The 1N4935-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement needs. Equivalent parts maintain identical electrical specifications and mechanical compatibility, while substitute parts satisfy the same functional requirements within the allowed parameter ranges for this diode category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	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 @ 200 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 1N4935-TP is determined by the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 1 A minimum
Voltage - Forward (Vf) (Max) @ If: 1.3 V or lower at 1 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: -55°C to 150°C minimum range

Mechanical Compatibility Criteria:

Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial equivalent
Supplier Device Package: DO-41 or DO-204AL (DO-41)

Compliance Requirements:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts are grouped as direct equivalents when all electrical and mechanical parameters match the main part specifications. Parametric equivalents satisfy the functional requirements while maintaining compatibility with the application circuit, though individual parameters such as reverse recovery time or capacitance may vary within acceptable ranges.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [ns]	Ir @ Vr [µA]	Package	Product Status	Packaging Type
1N4935-TP	Micro Commercial Co	200	1	1.3	200	5 @ 200V	DO-41	Obsolete	Bulk
1N4935GP-TP	Micro Commercial Co	200	1	1.2	200	5 @ 200V	DO-41	Active	Tape & Reel (TR)
1N4942GP-TP	Micro Commercial Co	200	1	1.3	150	5 @ 200V	DO-41	Active	Tape & Reel (TR)
FR103G A0G	Taiwan Semiconductor Corporation	200	1	1.3	150	5 @ 200V	DO-204AL (DO-41)	Active	Cut Tape (CT)
FR103G R0G	Taiwan Semiconductor Corporation	200	1	1.3	150	5 @ 200V	DO-204AL (DO-41)	Discontinued at DiGi Electronics	Tape & Reel (TR)
FR103G R1G	Taiwan Semiconductor Corporation	200	1	1.3	150	5 @ 200V	DO-204AL (DO-41)	Active	Unspecified
FR103T-G	Comchip Technology	200	1	1.3	150	5 @ 200V	DO-41	Active	Tape & Reel (TR)
PG102R_R2_00001	Panjit International Inc.	200	1	1.3	150	1 @ 200V	DO-41	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Recommendation: 1N4935GP-TP

The 1N4935GP-TP is the direct equivalent from the original manufacturer, Micro Commercial Co. This part maintains identical electrical specifications to the 1N4935-TP with the exception of forward voltage (1.2 V versus 1.3 V at 1 A), which represents an improvement in performance. The part is active and ROHS3 compliant. The primary difference is packaging format (Tape & Reel versus bulk), which is suitable for automated assembly processes.

Secondary Recommendation: 1N4942GP-TP

The 1N4942GP-TP is a parametric equivalent from Micro Commercial Co with improved reverse recovery time (150 ns versus 200 ns), resulting in faster switching characteristics. All other electrical parameters remain equivalent. This part is active, ROHS3 compliant, and available in Tape & Reel packaging. The faster recovery time may provide performance benefits in high-frequency switching applications.

Alternative Recommendations: FR103G Series (Taiwan Semiconductor Corporation)

The FR103G A0G, FR103G R0G, and FR103G R1G parts from Taiwan Semiconductor Corporation are parametric equivalents with identical voltage and current ratings. These parts feature 150 ns reverse recovery time and are ROHS3 compliant with REACH unaffected status. The FR103G A0G is available in Cut Tape packaging, while FR103G R0G and FR103G R1G are available in Tape & Reel format. FR103G R0G is discontinued at DiGi Electronics and should not be selected for new designs requiring long-term availability.

Alternative Recommendation: FR103T-G (Comchip Technology)

The FR103T-G is a parametric equivalent with identical electrical specifications and active product status. This part is ROHS3 compliant and available in Tape & Reel packaging. Capacitance at rated voltage is 25 pF, which is higher than the main part specification of 15 pF.

Alternative Recommendation: PG102R_R2_00001 (Panjit International Inc.)

The PG102R_R2_00001 is a parametric equivalent with identical voltage and current ratings. This part features lower reverse leakage current (1 µA versus 5 µA at 200 V), which may provide benefits in low-leakage applications. The part is active, ROHS3 compliant, and REACH unaffected. It is available in Tape & Reel packaging.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 1N4935-TP with 1N4935GP-TP?

A: Yes. The 1N4935GP-TP is the direct equivalent from the same manufacturer with identical electrical specifications. The primary difference is packaging format (Tape & Reel versus bulk). Both parts are rated for 200 V, 1 A, and feature identical reverse recovery time of 200 ns. The forward voltage of 1N4935GP-TP is 1.2 V at 1 A, which is lower than the 1.3 V specification of the 1N4935-TP, representing equivalent or improved performance.

Q: What is the difference between 1N4935GP-TP and 1N4942GP-TP?

A: Both parts are from Micro Commercial Co and rated for 200 V, 1 A. The primary difference is reverse recovery time: 1N4935GP-TP has 200 ns while 1N4942GP-TP has 150 ns. The faster recovery time of 1N4942GP-TP may provide performance advantages in high-frequency switching circuits. Forward voltage specifications are identical at 1.3 V at 1 A.

Q: Are FR103G parts compatible with the 1N4935-TP?

A: Yes. FR103G parts (A0G, R0G, R1G variants) from Taiwan Semiconductor Corporation are parametric equivalents with identical 200 V, 1 A ratings and fast recovery characteristics. All variants feature 150 ns reverse recovery time. The primary consideration is packaging: FR103G A0G is available in Cut Tape, while R0G and R1G are available in Tape & Reel format. FR103G R0G is discontinued at DiGi Electronics and should not be selected for new designs.

Q: What does "parametric equivalent" mean?

A: A parametric equivalent part satisfies all functional requirements of the original part within the allowed electrical and mechanical parameter ranges. While individual specifications such as reverse recovery time or capacitance may differ from the original part, the part operates correctly in the application circuit and maintains compatibility with the mechanical package and mounting method.

Q: Can I use PG102R_R2_00001 in place of 1N4935-TP?

A: Yes. The PG102R_R2_00001 from Panjit International Inc. is a parametric equivalent with identical 200 V, 1 A ratings and fast recovery characteristics. A notable advantage is lower reverse leakage current (1 µA versus 5 µA at 200 V), which may benefit low-leakage applications. The part is active and ROHS3 compliant.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in the following packaging formats: Tape & Reel (TR), Cut Tape (CT), and unspecified bulk formats. The 1N4935-TP was supplied in bulk packaging. For automated assembly processes, Tape & Reel format is standard. Cut Tape format is suitable for semi-automated or manual assembly. All substitute parts maintain mechanical compatibility with the DO-41 or DO-204AL (DO-41) package footprint.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant. Several parts also carry REACH unaffected status, indicating compliance with additional European regulatory requirements.

Q: Which substitute part has the fastest reverse recovery time?

A: Multiple substitute parts share the fastest reverse recovery time of 150 ns: 1N4942GP-TP, FR103G A0G, FR103G R0G, FR103G R1G, FR103T-G, and PG102R_R2_00001. The original 1N4935-TP has 200 ns reverse recovery time. Faster recovery time enables higher switching frequencies and reduced switching losses in rectifier applications.

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