MF-RG700-0-14 Equivalent & Substitute Parts

Part Overview

The MF-RG700-0-14 is a polymeric PTC resettable fuse manufactured by Bourns Inc. in the Multifuse® MF-RG series. This component provides overcurrent protection with a 7 A hold current rating and 16 V maximum voltage specification. The device is designed for through-hole radial mounting in disc configuration and is rated for AEC-Q200 compliance. The part is currently active in production with 721 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component sourcing, inventory management, or design flexibility across manufacturing locations.

Key Parameters

Parameter	Value	Unit
Voltage - Max	16	V
Current - Hold (Ih) (Max)	7	A
Current - Trip (It)	11.9	A
Current - Max	100	A
Time to Trip	3.5	s
Resistance - Initial (Ri) (Min)	7.7	mOhms
Resistance - Post Trip (R1) (Max)	20	mOhms
Operating Temperature Range	-40 to 85	°C
Mounting Type	Through Hole	—
Package / Case	Radial, Disc	—
Type	Polymeric	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MF-RG700-0-14 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Voltage - Max: 16 V
Current - Hold (Ih) (Max): 7 A
Current - Trip (It): 11.9 A
Time to Trip: 3.5 s
Resistance - Initial (Ri) (Min): 7.7 mOhms
Resistance - Post Trip (R1) (Max): 20 mOhms
Operating Temperature Range: -40°C to 85°C

Mechanical Parameters (Must Match):

Mounting Type: Through Hole
Package / Case: Radial, Disc
Type: Polymeric

Compliance Parameters:

RoHS Status: ROHS3 Compliant
ECCN: EAR99
HTSUS: 8533.40.8070

The substitute part RGEF700K, manufactured by Littelfuse Inc. in the PolySwitch® RGEF series, meets all electrical and mechanical equivalence criteria. Physical dimensions vary slightly within acceptable tolerances for through-hole radial disc components. Both parts are active products with ROHS3 compliance and identical export classification codes.

Parameter Comparison

Parameter	MF-RG700-0-14 (Bourns)	RGEF700K (Littelfuse)	Match Status
Voltage - Max	16 V	16 V	Equivalent
Current - Hold (Ih) (Max)	7 A	7 A	Equivalent
Current - Trip (It)	11.9 A	11.9 A	Equivalent
Current - Max	100 A	100 A	Equivalent
Time to Trip	3.5 s	3.5 s	Equivalent
Resistance - Initial (Ri) (Min)	7.7 mOhms	7.7 mOhms	Equivalent
Resistance - Post Trip (R1) (Max)	20 mOhms	20 mOhms	Equivalent
Operating Temperature Range	-40 to 85°C	-40 to 85°C	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	Radial, Disc	Radial, Disc	Equivalent
Type	Polymeric	Polymeric	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Size / Dimension (L x W)	0.441" x 0.118" (11.20mm x 3.00mm)	0.421" x 0.098" (10.70mm x 2.50mm)	Within Tolerance
Height - Seated (Max)	0.776" (19.70mm)	0.874" (22.20mm)	Within Tolerance
Lead Spacing	0.201" (5.10mm)	0.199" (5.05mm)	Within Tolerance
Approval Agency	cUL, cURus	CSA, TUV, UL	Equivalent Coverage
ECCN	EAR99	EAR99	Equivalent
HTSUS	8533.40.8070	8533.40.8070	Equivalent

Engineering Selection Recommendations

The RGEF700K manufactured by Littelfuse Inc. is a direct electrical and mechanical equivalent to the MF-RG700-0-14. Both components are active products with current production status and full ROHS3 compliance. The substitute part carries CSA, TUV, and UL certifications, providing equivalent regulatory coverage to the original part's cUL and cURus approvals. Physical dimensions are within acceptable tolerances for through-hole radial disc mounting applications. Both parts share identical export classification (EAR99) and tariff codes (8533.40.8070), supporting seamless supply chain integration. Selection between these parts is based on availability, lead time, packaging format (Bourns supplied in bulk; Littelfuse supplied in bag), and supplier relationship requirements.

Frequently Asked Questions (FAQ)

Q: What electrical parameters must match for RGEF700K to substitute for MF-RG700-0-14?

A: The substitute part must maintain identical voltage rating (16 V), hold current (7 A), trip current (11.9 A), trip time (3.5 s), and resistance specifications (7.7 mOhms initial, 20 mOhms post-trip maximum). Operating temperature range must span -40°C to 85°C.

Q: Are the physical dimensions of RGEF700K compatible with MF-RG700-0-14 PCB layouts?

A: Physical dimensions differ slightly between the two parts. MF-RG700-0-14 measures 0.441" L x 0.118" W with 0.776" seated height. RGEF700K measures 0.421" L x 0.098" W with 0.874" seated height. Lead spacing is equivalent at approximately 5.1 mm. These dimensional variations are within acceptable tolerances for through-hole radial disc mounting, but PCB layout verification is required for specific applications.

Q: Do both parts carry equivalent regulatory certifications?

A: Both parts are ROHS3 compliant with EAR99 export classification. MF-RG700-0-14 carries cUL and cURus approvals. RGEF700K carries CSA, TUV, and UL approvals. These certification sets provide equivalent regulatory coverage for industrial and consumer applications.

Q: What is the difference in packaging between these substitute parts?

A: MF-RG700-0-14 is supplied in bulk packaging. RGEF700K is supplied in bag packaging. Packaging format does not affect electrical or mechanical performance and is selected based on inventory management and procurement requirements.

Q: Can RGEF700K be used in AEC-Q200 qualified designs?

A: MF-RG700-0-14 carries explicit AEC-Q200 rating. RGEF700K does not list AEC-Q200 certification in provided specifications. For automotive applications requiring AEC-Q200 compliance, MF-RG700-0-14 is the specified part. RGEF700K is suitable for non-automotive industrial and consumer applications.

Q: Are there additional substitute options beyond RGEF700K?

A: The provided data identifies RGEF700K as the direct substitute for MF-RG700-0-14. RGEF700K documentation references additional part numbers (RGEF700-1, RGEF700) within the same PolySwitch® RGEF series, but these are not included in the primary substitute list for this analysis.

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