MF-R010-AP-99 Equivalent & Substitute Parts

Part Overview

The MF-R010-AP-99 is a Polymeric PTC Resettable Fuse manufactured by Bourns Inc. in the Multifuse® MF-R series. This component is rated for 60V maximum voltage with a 100 mA hold current and 200 mA trip current, designed for through-hole radial mounting in disc configuration. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Voltage - Max	60V
Current - Hold (Ih) (Max)	100 mA
Current - Trip (It)	200 mA
Current - Max	40 A
Time to Trip	4 s
Resistance - Initial (Ri) (Min)	2.5 Ohms
Resistance - Post Trip (R1) (Max)	7.5 Ohms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.291" Dia x 0.122" T (7.40mm x 3.10mm)
Lead Spacing	0.201" (5.10mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MF-R010-AP-99 is determined by strict equivalence across the following critical parameters:

Voltage rating: 60V maximum
Hold current: 100 mA maximum
Trip current: 200 mA
Time to trip: 4 seconds
Initial resistance: 2.5 Ohms minimum
Post-trip resistance: 7.5 Ohms maximum
Operating temperature range: -40°C to 85°C
Mounting configuration: Through-hole radial disc
Physical dimensions and lead spacing within specified tolerances

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical and mechanical specifications from the same or different manufacturers) and Direct Manufacturer Equivalents (alternative part numbers from the original manufacturer).

Parameter Comparison

Parameter	MF-R010-AP-99	MF-R010-AP	MF-R010-AP-17	RXEF010-AP	60R010XPR
Manufacturer	Bourns Inc.	Bourns Inc.	Bourns Inc.	Littelfuse	Littelfuse Inc.
Series	Multifuse® MF-R	Multifuse® MF-R	Multifuse® MF-R	PolySwitch® RXEF	POLY-FUSE® 60R
Product Status	Obsolete	Active	Active	Active	Active
Voltage - Max	60V	60V	60V	60V	60V
Current - Hold (Ih) (Max)	100 mA	100 mA	100 mA	100 mA	100 mA
Current - Trip (It)	200 mA	200 mA	200 mA	200 mA	200 mA
Current - Max	40 A	40 A	40 A	40 A	40 A
Time to Trip	4 s	4 s	4 s	4 s	4 s
Resistance - Initial (Ri) (Min)	2.5 Ohms	2.5 Ohms	2.5 Ohms	2.5 Ohms	2.5 Ohms
Resistance - Post Trip (R1) (Max)	7.5 Ohms	7.5 Ohms	7.5 Ohms	7.5 Ohms	7.5 Ohms
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc
Size / Dimension	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.291" Dia x 0.122" T (7.40mm x 3.10mm)	0.291" Dia x 0.118" T (7.40mm x 3.00mm)	0.291" Dia x 0.122" T (7.40mm x 3.10mm)
Height - Seated (Max)	0.500" (12.70mm)	0.500" (12.70mm)	0.500" (12.70mm)	0.457" (11.60mm)	0.500" (12.70mm)
Lead Spacing	0.201" (5.10mm)	0.201" (5.10mm)	0.201" (5.10mm)	0.199" (5.05mm)	0.201" (5.10mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	-	Cut Tape (CT)	Tape & Box (TB)	Cut Tape (CT)	Cut Tape (CT)

Engineering Selection Recommendations

All listed substitute parts meet the electrical and mechanical specifications of the MF-R010-AP-99. Selection should be based on the following factors:

Bourns Inc. Multifuse® MF-R Series:

MF-R010-AP: Active product status with identical specifications. Available in Cut Tape packaging with 6721 units in stock. Recommended as primary replacement for obsolete MF-R010-AP-99.
MF-R010-AP-17: Active product status with AEC-Q200 automotive qualification. Available in Tape & Box packaging with 1027 units in stock. Suitable for applications requiring automotive-grade compliance.

Littelfuse PolySwitch® and POLY-FUSE® Series:

RXEF010-AP: Active product status from alternative manufacturer. Mechanical dimensions show minor variance (height 0.457" vs. 0.500", thickness 0.118" vs. 0.122"). Lead spacing tolerance within specification (0.199" vs. 0.201"). Available in Cut Tape with 720 units in stock.
60R010XPR: Active product status from alternative manufacturer. Identical mechanical and electrical specifications to MF-R010-AP-99. Available in Cut Tape with 3400 units in stock.

All substitute parts carry ROHS3 compliance and are REACH unaffected. Approval agencies vary by part number; refer to specific certifications for regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MF-R010-AP be used as a direct replacement for the obsolete MF-R010-AP-99?

A: Yes. MF-R010-AP is a parametric equivalent with identical electrical specifications (60V, 100 mA hold, 200 mA trip) and mechanical dimensions. The primary difference is packaging format (Cut Tape vs. the original packaging designation). Both are ROHS3 compliant and carry the same approval agencies.

Q: What are the mechanical differences between RXEF010-AP and the original MF-R010-AP-99?

A: RXEF010-AP has minor dimensional variations: seated height of 0.457" (11.60mm) compared to 0.500" (12.70mm), and thickness of 0.118" (3.00mm) compared to 0.122" (3.10mm). Lead spacing is 0.199" (5.05mm) versus 0.201" (5.10mm). These tolerances remain within acceptable substitution parameters for through-hole radial disc mounting.

Q: Are there differences in approval certifications between substitute parts?

A: Yes. MF-R010-AP-99 carries cURus and TUV approvals. MF-R010-AP-17 includes additional certifications: cUL, cURus, TUV, and UL, plus AEC-Q200 automotive qualification. RXEF010-AP carries CQC, CSA, TUV, and UL approvals. 60R010XPR carries cURus approval. Select based on specific regulatory or application requirements.

Q: What packaging options are available for these substitute parts?

A: MF-R010-AP is available in Cut Tape (CT). MF-R010-AP-17 is available in Tape & Box (TB). RXEF010-AP and 60R010XPR are both available in Cut Tape (CT). Packaging selection depends on procurement and assembly requirements.

Q: Are all substitute parts currently in active production?

A: Yes. MF-R010-AP, MF-R010-AP-17, RXEF010-AP, and 60R010XPR are all listed as active products. The original MF-R010-AP-99 is obsolete, making these active alternatives necessary for system support and new designs.

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