Bourns MF-R065-2-99 PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The Bourns MF-R065-2-99 is a polymeric PTC resettable fuse rated for 60V maximum voltage and 650 mA hold current in a through-hole radial disc package. This part is classified as obsolete. Equivalent and substitute parts are available from Bourns and SCHURTER manufacturers with active product status, offering identical or enhanced electrical characteristics and improved availability.

Key Parameters

Parameter	Value
Voltage - Max	60V
Current - Hold (Ih) (Max)	650 mA
Current - Trip (It)	1.3 A
Current - Max	40 A
Time to Trip	5.3 s
Resistance - Initial (Ri) (Min)	270 mOhms
Resistance - Post Trip (R1) (Max)	720 mOhms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.382" Dia x 0.122" T (9.70mm x 3.10mm)
Lead Spacing	0.201" (5.10mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the MF-R065-2-99 are classified based on strict electrical and mechanical parameter matching:

Primary Substitutes (Identical Electrical & Mechanical Parameters):

Voltage: 60V maximum
Current Hold: 650 mA
Current Trip: 1.3 A
Resistance Initial: 270 mOhms minimum
Resistance Post Trip: 720 mOhms maximum
Operating Temperature: -40°C ~ 85°C
Package: Through Hole Radial Disc
Physical Dimensions: 0.382" Dia x 0.122" T (9.70mm x 3.10mm)
Lead Spacing: 0.201" (5.10mm)

Secondary Substitute (Enhanced Voltage Rating):

MF-RX065/72-2-17: Maintains all electrical parameters with increased voltage rating (72V vs 60V), suitable for higher voltage applications while maintaining backward compatibility in 60V circuits.

Cross-Manufacturer Substitute:

PFRA.065.2 (SCHURTER): Identical electrical and mechanical specifications with different manufacturer sourcing.

Parameter Comparison

Part Number	Manufacturer	Voltage - Max	Current - Hold (Ih)	Current - Trip (It)	Resistance - Initial (Ri)	Resistance - Post Trip (R1)	Operating Temp	Packaging	Product Status
MF-R065-2-99	Bourns Inc.	60V	650 mA	1.3 A	270 mOhms	720 mOhms	-40°C ~ 85°C	Radial, Disc	Obsolete
MF-R065-2	Bourns Inc.	60V	650 mA	1.3 A	270 mOhms	720 mOhms	-40°C ~ 85°C	Cut Tape (CT)	Active
MF-R065-2-17	Bourns Inc.	60V	650 mA	1.3 A	270 mOhms	720 mOhms	-40°C ~ 85°C	Tape & Reel (TR)	Active
MF-R065-AP	Bourns Inc.	60V	650 mA	1.3 A	270 mOhms	720 mOhms	-40°C ~ 85°C	Cut Tape (CT)	Active
MF-RX065/72-2-17	Bourns Inc.	72V	650 mA	1.3 A	270 mOhms	720 mOhms	-40°C ~ 85°C	Tape & Reel (TR)	Active
PFRA.065.2	SCHURTER Inc.	60V	650 mA	1.3 A	270 mOhms	720 mOhms	-40°C ~ 85°C	Cut Tape (CT)	Active

Engineering Selection Recommendations

For Direct Replacement (Obsolete Part Mitigation): Select MF-R065-2, MF-R065-2-17, or MF-R065-AP. All three maintain identical electrical specifications and physical dimensions. Choice depends on packaging requirements: Cut Tape for manual assembly, Tape & Reel for automated production.

For Enhanced Voltage Margin: MF-RX065/72-2-17 provides 72V maximum rating while maintaining all other parameters. This part carries AEC-Q200 automotive qualification and expanded approval agencies (cUL, cURus, TUV, UL), suitable for applications requiring higher voltage headroom or automotive compliance.

For Cross-Manufacturer Sourcing: PFRA.065.2 from SCHURTER provides identical electrical and mechanical compatibility with alternative supply chain access. This part is ROHS3 compliant and carries equivalent certifications.

Compliance Considerations: All active substitute parts maintain ROHS3 compliance and REACH unaffected status. MF-R065-2-17 and MF-RX065/72-2-17 include AEC-Q200 automotive qualification, providing additional reliability assurance for automotive and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can MF-R065-2-99 be directly replaced with MF-R065-2? A: Yes. Both parts share identical electrical parameters (60V, 650 mA hold current, 1.3 A trip current), resistance characteristics, and physical dimensions. The difference is packaging format: MF-R065-2 uses Cut Tape while MF-R065-2-99 uses standard radial packaging. Electrical performance is equivalent.

Q: What is the difference between MF-R065-2-17 and MF-R065-2? A: Electrical and mechanical specifications are identical. MF-R065-2-17 uses Tape & Reel packaging for automated assembly, while MF-R065-2 uses Cut Tape for manual handling. MF-R065-2-17 includes AEC-Q200 automotive qualification and expanded certifications (cUL, UL).

Q: Can MF-RX065/72-2-17 replace MF-R065-2-99 in a 60V circuit? A: Yes. The 72V rated MF-RX065/72-2-17 is backward compatible in 60V applications. All electrical parameters (650 mA hold, 1.3 A trip, resistance values) are identical. The higher voltage rating provides additional safety margin without affecting circuit operation.

Q: Is PFRA.065.2 from SCHURTER electrically equivalent? A: Yes. PFRA.065.2 maintains identical electrical specifications, resistance characteristics, and physical dimensions. It is a cross-manufacturer equivalent suitable for alternative sourcing while maintaining full functional compatibility.

Q: What packaging format should I select for production? A: For automated assembly lines, select Tape & Reel format (MF-R065-2-17 or MF-RX065/72-2-17). For manual assembly or low-volume applications, select Cut Tape format (MF-R065-2 or MF-R065-AP).

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

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