MF-R1100-0-99 Equivalent & Substitute Parts

Part Overview

The MF-R1100-0-99 is a polymeric PTC resettable fuse manufactured by Bourns Inc. in the Multifuse® MF-R series. This component is rated for 16V maximum voltage with an 11A hold current and is 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	16V
Current - Hold (Ih) (Max)	11 A
Current - Trip (It)	22 A
Current - Max	100 A
Time to Trip	20 s
Resistance - Initial (Ri) (Min)	3 mOhms
Resistance - Post Trip (R1) (Max)	14 mOhms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.953" L x 0.118" W (24.20mm x 3.00mm)
Lead Spacing	0.402" (10.20mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MF-R1100-0-99 is determined by strict equivalence across the following critical parameters:

Voltage - Max: 16V
Current - Hold (Ih) (Max): 11 A
Current - Trip (It): 22 A
Current - Max: 100 A
Time to Trip: 20 s
Resistance - Initial (Ri) (Min): 3 mOhms
Resistance - Post Trip (R1) (Max): 14 mOhms
Operating Temperature: -40°C ~ 85°C
Mounting Type: Through Hole
Package / Case: Radial, Disc
Physical dimensions and lead spacing

All identified substitute parts meet these electrical and mechanical specifications. Substitutes are grouped by manufacturer and product status to facilitate component selection based on availability and lifecycle requirements.

Parameter Comparison

Parameter	MF-R1100-0-99 (Main)	MF-R1100	MF-R1100-0-14	PFRA.1100
Manufacturer	Bourns Inc.	Bourns Inc.	Bourns Inc.	SCHURTER Inc.
Product Status	Obsolete	Active	Active	Active
Voltage - Max	16V	16V	16V	16V
Current - Hold (Ih) (Max)	11 A	11 A	11 A	11 A
Current - Trip (It)	22 A	22 A	22 A	22 A
Current - Max	100 A	100 A	100 A	100 A
Time to Trip	20 s	20 s	20 s	20 s
Resistance - Initial (Ri) (Min)	3 mOhms	3 mOhms	3 mOhms	3 mOhms
Resistance - Post Trip (R1) (Max)	14 mOhms	14 mOhms	14 mOhms	10 mOhms
Operating Temperature	-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
Package / Case	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc
Size / Dimension	0.953" L x 0.118" W (24.20mm x 3.00mm)	0.953" L x 0.118" W (24.20mm x 3.00mm)	0.953" L x 0.118" W (24.20mm x 3.00mm)	0.953" L x 0.118" W (24.20mm x 3.00mm)
Lead Spacing	0.402" (10.20mm)	0.402" (10.20mm)	0.402" (10.20mm)	0.402" (10.20mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	cURus, TUV	cURus, TUV	cUL, cURus, TUV, UL	cURus, TUV

Engineering Selection Recommendations

MF-R1100 (Bourns Inc., Active Status): This is the direct base product number for the obsolete MF-R1100-0-99. It maintains identical electrical and mechanical specifications and is currently in active production with bulk packaging availability. This part is the primary replacement for the obsolete variant.

MF-R1100-0-14 (Bourns Inc., Active Status): This parametric equivalent carries AEC-Q200 automotive qualification in addition to cUL, cURus, TUV, and UL approvals. It meets all electrical and mechanical requirements of the main part and is suitable for applications requiring automotive-grade reliability standards.

PFRA.1100 (SCHURTER Inc., Active Status): This cross-manufacturer substitute from SCHURTER Inc. meets all critical electrical parameters with a post-trip resistance maximum of 10 mOhms, which is lower than the 14 mOhms specification of the main part. It maintains identical voltage, current, temperature, and physical specifications. This part is suitable for applications where lower post-trip resistance is acceptable or beneficial.

Frequently Asked Questions (FAQ)

Q: Can MF-R1100 be used as a direct replacement for MF-R1100-0-99?

A: Yes. MF-R1100 is the active production base part number with identical electrical and mechanical specifications. The primary difference is product status: MF-R1100-0-99 is obsolete while MF-R1100 is active.

Q: What is the difference between MF-R1100-0-14 and MF-R1100-0-99?

A: Both parts share identical electrical and mechanical parameters. MF-R1100-0-14 includes AEC-Q200 automotive qualification and carries additional approval agencies (cUL, UL). MF-R1100-0-99 is obsolete while MF-R1100-0-14 is active.

Q: Can PFRA.1100 replace MF-R1100-0-99 in all applications?

A: PFRA.1100 meets all critical electrical and mechanical specifications. The post-trip resistance maximum is 10 mOhms compared to 14 mOhms for the main part. This lower resistance is within acceptable tolerance for most applications but should be evaluated for circuits with specific post-trip resistance requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 Compliant status.

Q: What are the packaging differences among substitute parts?

A: MF-R1100 and MF-R1100-0-14 are supplied in bulk packaging. PFRA.1100 is also supplied in bulk packaging. All parts maintain identical radial disc physical form factor and lead spacing.

Q: Which substitute part has the broadest approval certifications?

A: MF-R1100-0-14 carries the most comprehensive approval agency list: cUL, cURus, TUV, and UL. This makes it suitable for applications requiring multiple regulatory certifications.

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