Equivalent & Substitute Parts for MF-R020-AP-99

Part Overview

The MF-R020-AP-99 is a Polymeric PTC Resettable Fuse manufactured by Bourns Inc. in the Multifuse® MF-R series. This component is rated for 60V maximum voltage with a 200 mA hold current and is designed for through-hole radial mounting in disc configuration. The part is currently listed as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement.

Substiute Parts

MF-R020-AP-99

Bourns Inc.In Stock: 914MF-R020-AP-99 Datasheet

Current PartRFQ

MF-R020-AP

Bourns Inc.In Stock: 2268MF-R020-AP Datasheet

Parametric EquivalentRFQ

MF-R020-AP-17

Bourns Inc.In Stock: 964MF-R020-AP-17 Datasheet

Parametric EquivalentRFQ

MF-RX020/72-AP-17

Bourns Inc.In Stock: 1111MF-RX020/72-AP-17 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MF-R020-AP-99 is determined by the following critical parameters:

• Voltage Rating: Maximum voltage must be equal to or greater than 60V
• Current - Hold (Ih): Must be 200 mA maximum
• Current - Trip (It): Must be 400 mA
• Resistance Characteristics: Initial resistance minimum 1.5 Ohms; Post-trip resistance maximum 4.4 Ohms
• Mounting Configuration: Through-hole radial disc package with 0.201" (5.10mm) lead spacing
• Physical Dimensions: 0.291" diameter x 0.122" thickness (7.40mm x 3.10mm)
• Operating Temperature Range: -40°C to 85°C

Substitute parts are grouped into two categories based on voltage rating compatibility:

Category 1 - Direct 60V Equivalents: Parts maintaining the original 60V maximum voltage specification with identical electrical and mechanical parameters.

Category 2 - Higher Voltage Equivalents: Parts with voltage ratings exceeding 60V, suitable for applications where the circuit voltage does not exceed 60V but higher-rated components are acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: MF-R020-AP

The MF-R020-AP is the direct parametric equivalent to the obsolete MF-R020-AP-99. All electrical characteristics, mechanical dimensions, and operating parameters are identical. The part is currently active with higher inventory availability (2208 pcs). The primary difference is packaging format (Cut Tape vs. original specification). This part maintains cURus and TUV certifications consistent with the original component.

Secondary Substitute: MF-R020-AP-17

The MF-R020-AP-17 provides identical electrical and mechanical specifications to the MF-R020-AP-99 with enhanced certification coverage. This part includes cUL and UL approvals in addition to cURus and TUV, and carries AEC-Q200 automotive qualification. Packaging is supplied in Tape & Box format. This option is suitable for applications requiring automotive-grade reliability or expanded regulatory compliance.

Alternative Substitute: MF-RX020/72-AP-17

The MF-RX020/72-AP-17 maintains all electrical and mechanical parameters of the MF-R020-AP-99 with the exception of maximum voltage rating (72V vs. 60V). This part is suitable for circuits operating at 60V or below where a higher voltage-rated component is acceptable. It includes AEC-Q200 qualification and expanded certifications (cUL, cURus, TUV, UL). Packaging is Tape & Box format.

Frequently Asked Questions (FAQ)

Q: Can MF-R020-AP be used as a direct replacement for MF-R020-AP-99?

A: Yes. The MF-R020-AP is a parametric equivalent with identical voltage rating (60V), current hold (200 mA), trip current (400 mA), resistance characteristics, physical dimensions, and operating temperature range. The only difference is packaging format (Cut Tape vs. original specification). Both parts are ROHS3 compliant and carry cURus and TUV certifications.

Q: What is the difference between MF-R020-AP-17 and MF-R020-AP?

A: Both parts share identical electrical and mechanical specifications. MF-R020-AP-17 includes additional certifications (cUL and UL) and carries AEC-Q200 automotive qualification. MF-R020-AP-17 is packaged in Tape & Box format, while MF-R020-AP is supplied in Cut Tape. Select MF-R020-AP-17 for applications requiring automotive-grade components or expanded regulatory compliance.

Q: Is MF-RX020/72-AP-17 compatible with circuits designed for MF-R020-AP-99?

A: Yes, for circuits operating at 60V or below. The MF-RX020/72-AP-17 has a maximum voltage rating of 72V compared to the original 60V specification. All other electrical parameters (200 mA hold current, 400 mA trip current, resistance characteristics) and mechanical dimensions are identical. The higher voltage rating does not affect performance in 60V applications.

Q: What packaging options are available for these substitutes?

A: MF-R020-AP is supplied in Cut Tape (CT) format. MF-R020-AP-17 and MF-RX020/72-AP-17 are supplied in Tape & Box (TB) format. Packaging selection depends on procurement volume and assembly line requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (MF-R020-AP, MF-R020-AP-17, and MF-RX020/72-AP-17) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status.