MF-USMD020-2 Equivalent & Substitute Parts

Part Overview

The MF-USMD020-2 is a Polymeric PTC Resettable Fuse manufactured by Bourns Inc., rated for 30V maximum voltage with 200 mA hold current. This component is designed for surface mount applications in the 1210 (3225 Metric) package format. The MF-USMD020-2 carries an Obsolete product status, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

MF-USMD020-2

Bourns Inc.In Stock: 991MF-USMD020-2 Datasheet

Current PartRFQ

MF-USMF020-2

Bourns Inc.In Stock: 93342MF-USMF020-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MF-USMD020-2 is determined by strict equivalence across the following critical parameters:

• Voltage rating: 30V maximum
• Current hold specification: 200 mA
• Current trip specification: 400 mA
• Package format: 1210 (3225 Metric) surface mount
• Component type: Polymeric PTC resettable fuse
• Operating temperature range: -40°C ~ 85°C
• Electrical characteristics: Initial resistance minimum 400 mOhms, post-trip resistance maximum 5 Ohms

The MF-USMF020-2 meets all electrical and mechanical substitution criteria. Differences in product status, compliance certifications, and packaging format (Concave variant) do not affect functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The MF-USMF020-2 is the direct functional equivalent for the obsolete MF-USMD020-2. All electrical parameters, thermal specifications, and mechanical dimensions are identical. The MF-USMF020-2 offers the advantage of Active product status, ensuring long-term availability and supply chain continuity.

For applications requiring RoHS3 compliance, the MF-USMF020-2 is the appropriate selection. The Concave package variant does not affect electrical performance or PCB footprint compatibility. Approval certifications (cURus, TUV) satisfy regulatory requirements for most industrial and consumer applications.

Frequently Asked Questions (FAQ)

Q: Can the MF-USMF020-2 replace the MF-USMD020-2 in existing designs?

A: Yes. The MF-USMF020-2 is electrically and mechanically equivalent. All critical parameters—voltage rating, current specifications, resistance characteristics, and operating temperature range—are identical. The Concave package variant is compatible with standard 1210 footprints.

Q: What is the difference between the standard and Concave package variants?

A: The Concave variant refers to the physical shape of the component body. This does not affect electrical performance, circuit functionality, or PCB assembly compatibility.

Q: Why is the MF-USMD020-2 listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The MF-USMF020-2 serves as the active replacement, maintaining identical electrical and mechanical specifications.

Q: Are there compliance differences between these parts?

A: The MF-USMD020-2 is RoHS non-compliant. The MF-USMF020-2 is ROHS3 compliant. For new designs or applications with RoHS requirements, the MF-USMF020-2 is the required selection.

Q: Will the MF-USMF020-2 work in circuits designed for the MF-USMD020-2?

A: Yes. Identical electrical characteristics ensure functional compatibility. No circuit modifications are required.