MF-R010-0-99 Equivalent & Substitute Parts

Part Overview

The MF-R010-0-99 is a polymeric PTC resettable fuse manufactured by Bourns Inc. in the Multifuse® MF-R series. This component provides overcurrent protection at 60V with a 100 mA hold current and 200 mA trip current in a through-hole radial disc package. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and production continuity. Active alternatives from multiple manufacturers offer identical electrical performance and mechanical compatibility.

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)
Type	Polymeric

Substitute Part Grouping Explanation

Substitution eligibility 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 type: Through hole
Package type: Radial disc
Lead spacing: 5.10mm (±0.10mm tolerance acceptable)
Polymeric PTC type

All substitute parts listed meet these criteria. Variations in physical dimensions (height, thickness) within the radial disc package envelope do not affect electrical substitutability. Packaging format (bulk, bag) represents inventory configuration only and does not impact functional equivalence.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage (Max)	Ih (Max)	It	Ri (Min)	R1 (Max)	Temp Range	Lead Spacing	Status
MF-R010-0-99	Bourns Inc.	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.201" (5.10mm)	Obsolete
MF-R010	Bourns Inc.	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.201" (5.10mm)	Active
MF-R010-0-17	Bourns Inc.	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.201" (5.10mm)	Active
MF-R010-0-A0	Bourns Inc.	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.201" (5.10mm)	Active
PTR060V0010-BK	Eaton - Electronics Division	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.197" (5.00mm)	Active
PTR060V0010-BK1	Eaton - Electronics Division	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.197" (5.00mm)	Active
RXEF010	Littelfuse	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.199" (5.05mm)	Active
0ZRR0010FF1E	Bel Fuse Inc.	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.201" (5.10mm)	Active
60R010XU	Littelfuse Inc.	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.201" (5.10mm)	Active
PFRA.010	SCHURTER Inc.	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.201" (5.10mm)	Active
RS60RB-010	OptiFuse	60V	100 mA	200 mA	2.5 Ohms	7.5 Ohms	-40°C ~ 85°C	0.201" (5.10mm)	Active

Engineering Selection Recommendations

All listed substitute parts are electrically and mechanically equivalent to MF-R010-0-99. Selection should prioritize active product status and compliance certifications:

Bourns Inc. alternatives (MF-R010, MF-R010-0-17, MF-R010-0-A0) provide direct manufacturer continuity with identical specifications. MF-R010-0-17 includes AEC-Q200 automotive qualification and expanded agency approvals (cUL, cURus, TUV, UL).

Littelfuse options (RXEF010, 60R010XU) offer high inventory availability. RXEF010 carries expanded certifications (CQC, CSA, TUV, UL) and is available in bag packaging. 60R010XU provides bulk availability with cURus approval.

Eaton PTR060V series (PTR060V0010-BK, PTR060V0010-BK1) deliver active status with cURus and TUV certifications. Lead spacing is 0.197" (5.00mm), representing a 0.10mm reduction from the original specification but within standard PCB tolerance for radial disc packages.

Bel Fuse 0ZRR0010FF1E includes AEC-Q200 automotive qualification with cURus, TUV, and UL approvals.

SCHURTER PFRA.010 and OptiFuse RS60RB-010 complete the substitute portfolio with full electrical equivalence and appropriate certifications.

Frequently Asked Questions (FAQ)

Q: Can MF-R010-0-99 be directly replaced with any of these substitutes?

A: Yes. All listed parts meet identical electrical specifications (60V, 100 mA hold, 200 mA trip, 4 s trip time) and mechanical requirements (through-hole radial disc, 5.10mm lead spacing nominal). Physical dimension variations (height, thickness) do not affect functional performance in standard PCB layouts.

Q: What is the difference between MF-R010, MF-R010-0-17, and MF-R010-0-A0?

A: These are all Bourns Multifuse® MF-R series variants with identical electrical and mechanical specifications. The suffix designations represent different packaging configurations and agency approvals. MF-R010-0-17 includes AEC-Q200 automotive qualification. All three are active products suitable for replacing the obsolete MF-R010-0-99.

Q: Are there any lead spacing compatibility issues?

A: Lead spacing is nominally 5.10mm across most substitutes. Eaton PTR060V parts specify 0.197" (5.00mm) and Littelfuse RXEF010 specifies 0.199" (5.05mm). These variations fall within standard PCB manufacturing tolerances for radial disc packages and do not require layout modifications.

Q: Which substitute offers the best availability?

A: Littelfuse RXEF010 shows the highest inventory (26,300 pcs). Bourns MF-R010 provides 17,180 pcs. Both are suitable for high-volume applications.

Q: Do all substitutes carry the same certifications as the original?

A: The original MF-R010-0-99 carries cURus and TUV approvals. Most substitutes meet or exceed these certifications. MF-R010-0-17 and RXEF010 include additional UL and CSA approvals. Verify specific certification requirements for your application before selection.

Q: Is RoHS compliance consistent across all options?

A: All substitutes are RoHS3 compliant or RoHS compliant. No lead-free conversion is required for any substitute.

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