Equivalent & Substitute Parts Reference: MF-R090-2-17

Part Overview

The Bourns Inc. MF-R090-2-17 is a Polymeric PTC Resettable Fuse 60V 900 mA Ih Through Hole Radial, Disc, series Multifuse®, MF-R. This fuse is currently listed as Active and features automotive AEC-Q200 ratings, ROHS3 compliance, and approvals from cUL, cURus, TUV, and UL. Alternative models may be required to satisfy supply chain requirements, maintain design interchangeability, or meet specific compliance certifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	MF-R090-2-17
Manufacturer	Bourns Inc.
Type	Polymeric
Voltage - Max	60V
Current - Hold (Ih) (Max)	900 mA
Current - Trip (It)	1.8 A
Current - Max	40 A
Time to Trip	7.2 s
Resistance - Initial (Ri) (Min)	140 mOhms
Resistance - Post Trip (R1) (Max)	470 mOhms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.461" Dia x 0.122" T (11.70mm x 3.10mm)
Height - Seated (Max)	0.657" (16.70mm)
Lead Spacing	0.201" (5.10mm)
Approval Agency	cUL, cURus, TUV, UL
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8533.40.8070

Substitute Part Grouping Explanation

Substitute and equivalent parts for MF-R090-2-17 are grouped strictly based on matching the following allowed electrical and mechanical parameters: type (Polymeric), maximum hold current (Ih), trip current (It), maximum voltage rating, maximum current rating, initial and post-trip resistance, mounting type, package/case, physical dimensions, operating temperature range, and lead spacing. Approval agency and compliance certifications are included when specified. Only parts with identical or higher ratings and matching physical configuration and compliance status are recognized as substitutes.

Parameter Comparison

Parameter	MF-R090-2-17 Bourns Inc.	MF-RX090/72-2 Bourns Inc.	PFRA.090.2 SCHURTER Inc.
Type	Polymeric	Polymeric	Polymeric
Voltage - Max	60V	72V	60V
Current - Hold (Ih) (Max)	900 mA	900 mA	900 mA
Current - Trip (It)	1.8 A	1.8 A	1.8 A
Current - Max	40 A	40 A	40 A
Time to Trip	7.2 s	7.2 s	7.2 s
Resistance - Initial (Ri) (Min)	140 mOhms	140 mOhms	140 mOhms
Resistance - Post Trip (R1) (Max)	470 mOhms	470 mOhms	470 mOhms
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Disc	Radial, Disc	Radial, Disc
Size / Dimension	0.461" Dia x 0.122" T (11.70mm x 3.10mm)	0.461" Dia x 0.122" T (11.70mm x 3.10mm)	0.461" Dia x 0.122" T (11.70mm x 3.10mm)
Height - Seated (Max)	0.657" (16.70mm)	0.657" (16.70mm)	0.657" (16.70mm)
Lead Spacing	0.201" (5.10mm)	0.201" (5.10mm)	0.201" (5.10mm)
Approval Agency	cUL, cURus, TUV, UL	cURus, TUV	cURus, TUV
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Not Applicable
ECCN	EAR99	EAR99	EAR99
HTSUS	8533.40.8070	8533.40.8070	8533.40.8070

Engineering Selection Recommendations

All listed substitutes are Active, ROHS3 Compliant, and REACH Unaffected. They feature matched electrical characteristics and mechanical configurations. MF-R090-2-17 is AEC-Q200 rated and carries cUL, cURus, TUV, UL approvals. MF-RX090/72-2 and PFRA.090.2 provide cURus and TUV approvals. Moisture Sensitivity Level is specified as 1 (Unlimited) for MF-R090-2-17 and MF-RX090/72-2. PFRA.090.2 notes Not Applicable for MSL. Base engineering selection on product status, regulatory compliance, and required certification approvals per application needs.

Frequently Asked Questions (FAQ)

Q1: What electrical parameters must match for substitute selection in Polymeric PTC Resettable Fuses?
A1: Substitute selection requires matching type, maximum voltage rating, hold current (Ih), trip current (It), maximum current, time to trip, and resistance values.

Q2: Are mechanical dimensions and mounting critical for compatibility?
A2: Yes. Mechanical dimensions, package/case type, height seated, and lead spacing must correspond for form and fit compatibility.

Q3: What certifications and regulatory compliance should be verified?
A3: Review approval agencies (cUL, cURus, TUV, UL), RoHS status, REACH status, and AEC-Q200 ratings according to application and end-use requirements.

Q4: How do Moisture Sensitivity Levels (MSL) affect substitution?
A4: MSL in these through-hole radial PTC fuses generally does not impact reflow assembly; however, it is noted for inventory and handling reference.

Q5: Do all listed substitutes share identical inventory statuses?
A5: All listed parts are marked as Active, with quantity in stock indicated, supporting direct inventory substitutions.

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