FR157S-TP Equivalent & Substitute Parts

Part Overview

The FR157S-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 1000 V DC reverse voltage and 1.5 A average rectified current in a DO-41 axial through-hole package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. The FR157S-TP operates across a junction temperature range of -55°C to 150°C and meets ROHS3 compliance requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 1.5	V @ A
Reverse Recovery Time (trr)	500	ns
Current - Reverse Leakage @ Vr	5	µA @ 1000 V
Capacitance @ Vr, F	20	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the FR157S-TP is determined by equivalence across the following critical electrical and mechanical parameters:

Voltage Rating: DC reverse voltage must equal 1000 V
Current Rating: Average rectified current must equal 1.5 A
Forward Voltage Drop: Maximum forward voltage at rated current must equal 1.3 V @ 1.5 A
Recovery Characteristics: Reverse recovery time must equal 500 ns (fast recovery classification)
Reverse Leakage: Maximum reverse leakage current must equal 5 µA @ 1000 V
Capacitance: Junction capacitance must equal 20 pF @ 4V, 1MHz
Temperature Range: Operating junction temperature range must span -55°C to 150°C
Technology: Standard rectifier diode technology
Mounting: Through-hole axial configuration

The FR157GP-TP qualifies as a direct substitute based on identical electrical specifications across all parameters listed above. The primary distinction is packaging format: FR157GP-TP uses DO-15 package versus FR157S-TP DO-41 package, both of which are axial through-hole configurations suitable for equivalent circuit board integration.

Parameter Comparison

Parameter	FR157S-TP (Main Part)	FR157GP-TP (Substitute)	Match
Manufacturer	Micro Commercial Co	Micro Commercial Co	Yes
Voltage - DC Reverse (Vr) (Max)	1000 V	1000 V	Yes
Current - Average Rectified (Io)	1.5 A	1.5 A	Yes
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1.5 A	1.3 V @ 1.5 A	Yes
Reverse Recovery Time (trr)	500 ns	500 ns	Yes
Current - Reverse Leakage @ Vr	5 µA @ 1000 V	5 µA @ 1000 V	Yes
Capacitance @ Vr, F	20 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	Yes
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	Yes
Mounting Type	Through Hole	Through Hole	Yes
Technology	Standard	Standard	Yes
Package / Case	DO-204AL, DO-41, Axial	DO-204AC, DO-15, Axial	Different Package
Product Status	Obsolete	Active	Substitute is Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes

Engineering Selection Recommendations

The FR157GP-TP is a qualified substitute for the FR157S-TP based on complete electrical parameter equivalence. The FR157S-TP is classified as obsolete, whereas the FR157GP-TP maintains active product status, ensuring continued availability and manufacturing support.

Both parts meet ROHS3 compliance requirements and carry identical electrical specifications across voltage rating, current capacity, forward voltage drop, recovery time, reverse leakage, and capacitance characteristics. The operating temperature range is identical at -55°C to 150°C.

The primary consideration for substitution is the package format difference: FR157S-TP uses DO-41 package while FR157GP-TP uses DO-15 package. Both are axial through-hole configurations. Physical dimensions and lead spacing differ between these packages, requiring verification of printed circuit board layout compatibility before implementation.

The FR157GP-TP is supplied in Tape & Reel (TR) packaging format, whereas the FR157S-TP packaging format is not specified in the provided data. Procurement and handling procedures may differ accordingly.

Frequently Asked Questions (FAQ)

Q: Can FR157GP-TP directly replace FR157S-TP in all applications?

A: Electrical substitution is complete. Physical substitution requires verification that the DO-15 package dimensions and lead spacing are compatible with the existing printed circuit board layout designed for DO-41 package. Both packages are axial through-hole configurations, but physical footprints differ.

Q: What is the difference between DO-41 and DO-15 packages?

A: Both are axial through-hole diode packages with leads extending from opposite ends. DO-41 (DO-204AL) and DO-15 (DO-204AC) differ in physical dimensions and lead diameter. Specific dimensional data must be consulted from component datasheets to confirm board compatibility.

Q: Why is FR157S-TP listed as obsolete?

A: Product status reflects manufacturer discontinuation. The FR157GP-TP provides equivalent electrical performance with active manufacturing status, ensuring long-term availability.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant. The FR157GP-TP includes REACH Unaffected status in the provided data. Both carry EAR99 ECCN classification and identical HTSUS code 8541.10.0080.

Q: What is the moisture sensitivity level for these diodes?

A: Both FR157S-TP and FR157GP-TP carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can I use FR157GP-TP in tape and reel format for manual assembly?

A: FR157GP-TP is supplied in Tape & Reel (TR) packaging, which is standard for automated pick-and-place assembly. Manual assembly applications may require alternative packaging formats or tape removal and individual component handling.

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