MF-R1100-AP-99 Equivalent & Substitute Parts

Part Overview

The MF-R1100-AP-99 is a polymeric PTC resettable fuse manufactured by Bourns Inc. in the Multifuse® MF-R series. This component is rated for 16V maximum voltage with an 11A hold current and 22A trip current, designed for through-hole radial mounting in disc configuration. The part is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and component procurement.

Substiute Parts

MF-R1100-AP-99

Bourns Inc.In Stock: 976MF-R1100-AP-99 Datasheet

Current PartRFQ

MF-R1100-AP

Bourns Inc.In Stock: 843MF-R1100-AP Datasheet

Parametric EquivalentRFQ

MF-R1100-AP-14

Bourns Inc.In Stock: 771MF-R1100-AP-14 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MF-R1100-AP-99 is determined by strict equivalence across the following critical parameters:

• Voltage rating: 16V maximum
• Current hold specification: 11A
• Current trip specification: 22A
• Mounting configuration: Through hole radial disc
• Physical dimensions: 0.953" L x 0.118" W with 0.402" lead spacing
• Resistance characteristics: 3 mOhms initial minimum, 14 mOhms post-trip maximum
• Operating temperature range: -40°C to 85°C
• Polymeric PTC resettable fuse type

The identified substitute parts maintain identical electrical and mechanical specifications, ensuring direct functional replacement in circuit applications. Differences in product status and packaging format do not affect electrical performance or physical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both MF-R1100-AP and MF-R1100-AP-14 are active product alternatives to the obsolete MF-R1100-AP-99. Selection between these substitutes should be based on the following factors:

MF-R1100-AP is the direct parametric equivalent with identical electrical specifications and certifications (cURus, TUV). This part is suitable for applications requiring standard compliance levels.

MF-R1100-AP-14 provides expanded regulatory approvals including cUL, cURus, TUV, and UL certifications, plus AEC-Q200 automotive qualification rating. This variant is appropriate for applications requiring automotive-grade reliability or broader regulatory acceptance across multiple markets.

Both parts maintain ROHS3 compliance and identical electrical performance. The choice between them depends on specific application requirements and regulatory certifications needed for the end product.

Frequently Asked Questions (FAQ)

Q: Can MF-R1100-AP or MF-R1100-AP-14 be used as direct replacements for MF-R1100-AP-99?

A: Yes. Both substitute parts maintain identical electrical specifications including voltage rating, current hold and trip values, resistance characteristics, and operating temperature range. Physical dimensions and lead spacing are also identical, ensuring direct compatibility in through-hole radial mounting applications.

Q: What is the difference between MF-R1100-AP and MF-R1100-AP-14?

A: The primary differences are product status and regulatory certifications. MF-R1100-AP is an active product with cURus and TUV approvals. MF-R1100-AP-14 is also active and includes additional certifications (cUL, UL) plus AEC-Q200 automotive qualification. Electrical and mechanical specifications are identical.

Q: Does packaging format affect electrical performance?

A: No. MF-R1100-AP and MF-R1100-AP-14 are supplied in Tape & Box (TB) packaging, while MF-R1100-AP-99 packaging format is not specified. Packaging format does not affect component electrical performance or circuit functionality.

Q: Are there any temperature or voltage derating considerations when substituting these parts?

A: No. All three parts share identical operating temperature range (-40°C to 85°C) and maximum voltage rating (16V). No derating adjustments are required when substituting between these parts.

Q: Which substitute should be selected for new designs?

A: For new designs, either MF-R1100-AP or MF-R1100-AP-14 is appropriate based on application requirements. If automotive qualification or expanded regulatory approvals are needed, MF-R1100-AP-14 is the preferred selection. For standard industrial applications, MF-R1100-AP provides equivalent functionality.