FR103 Equivalent & Substitute Parts

Part Overview

The FR103 is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 200 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole package. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The FR103 operates across a junction temperature range of -65°C to 150°C and features fast recovery characteristics with a reverse recovery time of 150 ns, suitable for standard rectification circuits requiring moderate voltage and current ratings.

Substiute Parts

FR103

SMC Diode SolutionsIn Stock: 10273FR103 Datasheet

Current PartRFQ

FR103G

Taiwan Semiconductor CorporationIn Stock: 1146FR103G Datasheet

DirectRFQ

FR103G A0G

Taiwan Semiconductor CorporationIn Stock: 2615FR103G A0G Datasheet

SimilarRFQ

FR103G R0G

Taiwan Semiconductor CorporationIn Stock: 11090FR103G R0G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FR103 is determined by electrical and mechanical parameter equivalence. The critical parameters that define substitutability are:

• Voltage - DC Reverse (Vr) (Max): 200 V minimum
• Current - Average Rectified (Io): 1 A minimum
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A maximum
• Reverse Recovery Time (trr): 150 ns maximum (fast recovery classification)
• Current - Reverse Leakage @ Vr: 5 µA @ 200 V maximum
• Mounting Type: Through Hole
• Package / Case: DO-204AL, DO-41, or Axial equivalent

All substitute parts listed meet or exceed these electrical specifications and maintain mechanical compatibility through identical or equivalent package designations. Packaging format variations (Tape & Reel, Cut Tape) do not affect electrical substitutability but may influence procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: FR103G

The FR103G manufactured by Taiwan Semiconductor Corporation is the direct electrical equivalent to the FR103. All critical electrical parameters are identical, including reverse voltage, forward current, forward voltage drop, and reverse recovery time. The FR103G maintains active product status and is ROHS3 compliant, providing regulatory compliance for new designs and production runs. The Tape & Reel packaging format supports automated assembly processes.

Secondary Substitute: FR103G A0G

The FR103G A0G is electrically identical to the FR103G and maintains active product status with ROHS3 compliance. This variant is supplied in Cut Tape format, suitable for manual assembly or lower-volume applications. The higher inventory level (2510 Pcs) provides supply availability for immediate procurement.

Tertiary Substitute: FR103G R0G

The FR103G R0G meets all electrical specifications and is ROHS3 compliant. However, this part is listed as discontinued at DiGi Electronics, indicating limited future availability. Selection of this substitute should be considered only when primary and secondary options are unavailable, despite current inventory levels of 11005 Pcs.

All three substitute parts operate within the temperature range of -55°C to 150°C, which encompasses the primary operating range of the original FR103 (-65°C to 150°C). The narrower lower temperature limit of the substitutes does not affect standard industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can FR103G be used as a direct replacement for FR103 in existing circuits?

A: Yes. The FR103G meets all electrical specifications of the FR103, including voltage rating, current rating, forward voltage drop, and reverse recovery time. Through-hole mounting compatibility and DO-41 package equivalence ensure mechanical fit without circuit board modifications.

Q: What is the difference between FR103G, FR103G A0G, and FR103G R0G?

A: The three parts are electrically identical. The differences are packaging format and product availability status. FR103G is supplied in Tape & Reel format, FR103G A0G in Cut Tape format, and FR103G R0G in Tape & Reel but with discontinued status at DiGi Electronics. Selection depends on assembly process requirements and supply chain considerations.

Q: Does the operating temperature range difference affect substitutability?

A: The FR103 operates from -65°C to 150°C, while substitutes operate from -55°C to 150°C. For applications requiring operation below -55°C, the substitutes are not suitable. For standard industrial and commercial applications operating above -55°C, the temperature range difference is not a limiting factor.

Q: Are the substitute parts RoHS compliant?

A: Yes. FR103G, FR103G A0G, and FR103G R0G are all ROHS3 compliant. The original FR103 RoHS status is not specified in available documentation. Use of ROHS3-compliant substitutes ensures compliance with current environmental and regulatory requirements.

Q: What packaging formats are available for the substitutes?

A: FR103G is available in Tape & Reel (TR) format for automated assembly. FR103G A0G is available in Cut Tape (CT) format for manual or semi-automated assembly. FR103G R0G is available in Tape & Reel format. Selection of packaging format should align with assembly process capabilities and production volume requirements.

Q: Can substitutes be used interchangeably in the same circuit board design?

A: Yes. All substitute parts maintain identical electrical characteristics and through-hole mounting compatibility. Packaging format differences do not affect circuit performance or board layout. Component selection can be based on procurement availability and assembly process requirements without circuit redesign.