FR102 Equivalent & Substitute Parts

Part Overview

The FR102 is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. Manufactured by SMC Diode Solutions, this component is classified as obsolete. Due to its obsolete status and limited remaining inventory, identification of equivalent and substitute parts is necessary for design continuity and procurement planning. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available package variants and manufacturer options.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 1 A
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	—
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-65 to 150	°C

Substitute Part Grouping Explanation

Substitute parts for the FR102 are grouped based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 1 A minimum
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial variants

Secondary Compatibility Factors:

Forward voltage drop (Vf) at rated current
Reverse recovery time (trr) and speed classification
Reverse leakage current
Operating temperature range
Product status and compliance certifications

Substitute parts are classified as Direct Equivalents when all electrical parameters match the FR102 specification. Parts with higher current ratings or different recovery characteristics are classified as Similar Alternatives and are suitable for applications where the FR102 specifications represent minimum requirements.

Parameter Comparison

Parameter	FR102 (Main)	FR102G (Direct)	1N5392-E3/54 (Similar)	FR102G B0G (Similar)	FR102G R1G (Similar)
Manufacturer	SMC Diode Solutions	Taiwan Semiconductor	Vishay General Semiconductor	Taiwan Semiconductor	Taiwan Semiconductor
Product Status	Obsolete	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	1 A	1 A	1.5 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	1.4 V @ 1.5 A	1.3 V @ 1 A	1.3 V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery > 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns
Reverse Recovery Time (trr)	150 ns	150 ns	2 µs	150 ns	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V
Capacitance @ Vr, F	15 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	15 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz
Operating Temperature - Junction	-65 to 150 °C	-55 to 150 °C	-50 to 150 °C	-55 to 150 °C	-55 to 150 °C
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
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	3200 Pcs New Original	1084 Pcs New Original	8700 Pcs New Original	798 Pcs New Original	1117 Pcs New Original

Engineering Selection Recommendations

Direct Equivalent Selection:

FR102G and FR102G variants (B0G, R1G) from Taiwan Semiconductor Corporation are direct electrical equivalents to the FR102. These parts maintain identical voltage, current, and recovery time specifications. All variants are classified as Active products with ROHS3 compliance and REACH unaffected status. The primary distinction between FR102G variants is inventory availability and manufacturing date codes. Selection among these variants should be based on procurement lead time and inventory requirements.

Alternative Selection:

1N5392-E3/54 from Vishay General Semiconductor is a similar alternative with higher current capacity (1.5 A versus 1 A). This part is suitable for applications where the FR102 specifications represent minimum requirements and where higher current margin is acceptable. The 1N5392-E3/54 exhibits standard recovery characteristics (2 µs trr) compared to the fast recovery profile of the FR102. This difference affects switching performance in high-frequency applications. The 1N5392-E3/54 is supplied in Cut Tape packaging and maintains ROHS3 compliance and REACH unaffected status.

Compliance Considerations:

All substitute parts maintain REACH unaffected status and ECCN EAR99 classification consistent with the FR102. Taiwan Semiconductor and Vishay parts are ROHS3 compliant, addressing regulatory requirements for new designs. The FR102 original part does not specify RoHS status due to its obsolete classification.

Temperature Range Consideration:

The FR102 specifies a junction temperature range of -65°C to 150°C. Substitute parts from Taiwan Semiconductor and Vishay specify -55°C to -50°C minimum temperatures. Applications requiring operation below -55°C require evaluation of the narrower temperature range.

Frequently Asked Questions (FAQ)

Q: Can FR102G directly replace FR102 in existing designs?

A: Yes. FR102G maintains identical electrical specifications for voltage (100 V), current (1 A), forward voltage (1.3 V @ 1 A), and recovery time (150 ns). Both parts use through-hole DO-41 packaging. Physical footprint and pin configuration are compatible.

Q: What is the difference between FR102G, FR102G B0G, and FR102G R1G?

A: All three variants are manufactured by Taiwan Semiconductor Corporation and maintain identical electrical specifications. The designations B0G and R1G represent different manufacturing date codes or tape reel configurations. Electrical performance and package compatibility are equivalent across all variants.

Q: Is 1N5392-E3/54 suitable as a substitute for FR102?

A: 1N5392-E3/54 is electrically compatible for voltage and leakage specifications but differs in two aspects: (1) higher current rating (1.5 A versus 1 A), and (2) standard recovery time (2 µs versus 150 ns fast recovery). The part is suitable for applications where these differences do not impact circuit performance. High-frequency switching applications may require evaluation of the longer recovery time.

Q: What packaging options are available for FR102 substitutes?

A: All substitute parts are supplied in through-hole DO-204AL (DO-41) axial package configuration, matching the FR102 original package specification. FR102G and variants are supplied in standard packaging. 1N5392-E3/54 is supplied in Cut Tape (CT) packaging.

Q: Are all substitute parts RoHS compliant?

A: Yes. FR102G, FR102G B0G, FR102G R1G, and 1N5392-E3/54 are all ROHS3 compliant. The FR102 original part does not specify RoHS status due to its obsolete classification.

Q: What is the minimum operating temperature for substitute parts?

A: FR102G variants specify -55°C minimum junction temperature. 1N5392-E3/54 specifies -50°C minimum junction temperature. The FR102 original part specifies -65°C minimum. Applications requiring operation below -55°C should retain the FR102 original part or evaluate alternative diode families.

Q: Which substitute part has the highest inventory availability?

A: 1N5392-E3/54 has the highest inventory with 8700 pieces in stock. FR102G variants have lower availability: FR102G (1084 pcs), FR102G B0G (798 pcs), and FR102G R1G (1117 pcs).

Q: Are all parts REACH compliant?

A: Yes. FR102, FR102G, FR102G variants, and 1N5392-E3/54 are all classified as REACH unaffected.

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