LTP260 Equivalent & Substitute Parts

Part Overview

The LTP260 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., rated for 24V maximum voltage with a 2.6A hold current. This component is designed for overcurrent protection in electronic circuits requiring automatic reset capability without manual intervention. The LTP260 operates across a temperature range of -40°C to 85°C and features a strap mounting configuration.

The LTP260 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

LTP260

Littelfuse Inc.In Stock: 1146LTP260 Datasheet

Current PartRFQ

MF-LS260

Bourns Inc.In Stock: 777MF-LS260 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTP260 is determined by strict equivalence across the following critical parameters:

• Voltage rating: 24V maximum
• Hold current (Ih): 2.6A maximum
• Trip current (It): 5.2A
• Time to trip: 5 seconds
• Initial resistance (Ri): 25 mOhms minimum
• Post-trip resistance (R1): 76 mOhms maximum
• Operating temperature range: -40°C to 85°C
• Package type: Strap configuration
• Physical dimensions: 25.00mm L x 11.35mm W x 1.00mm thickness maximum

The MF-LS260 manufactured by Bourns Inc. meets all specified electrical and mechanical parameters, making it a direct functional equivalent for the obsolete LTP260.

Parameter Comparison

Engineering Selection Recommendations

The MF-LS260 is the direct equivalent substitute for the LTP260. All electrical parameters, mechanical dimensions, and operating characteristics are identical. The MF-LS260 offers additional advantages: it maintains active product status with ongoing manufacturer support, and it achieves ROHS3 compliance, whereas the LTP260 is non-compliant. Both components carry TUV certification; the MF-LS260 additionally holds cURus approval. The MF-LS260 features improved moisture sensitivity rating (MSL 1, Unlimited versus MSL 2A, 4 Weeks), providing superior shelf-life stability.

Selection of the MF-LS260 is appropriate for new designs, redesigns, or maintenance applications requiring the LTP260 electrical and mechanical specifications.

Frequently Asked Questions (FAQ)

Q: Can the MF-LS260 be used as a direct replacement for the LTP260 in existing designs?

A: Yes. The MF-LS260 matches all critical electrical parameters (voltage, hold current, trip current, resistance values, and time to trip) and physical dimensions (strap package, 25.00mm x 11.35mm x 1.00mm). No circuit modifications are required.

Q: What are the key differences between the LTP260 and MF-LS260?

A: The primary differences are product status and compliance. The LTP260 is obsolete; the MF-LS260 is active. The MF-LS260 is ROHS3 compliant while the LTP260 is non-compliant. The MF-LS260 has superior moisture sensitivity rating (MSL 1 versus MSL 2A).

Q: Are there any certifications or approvals that differ between these parts?

A: Both components hold TUV certification. The MF-LS260 additionally carries cURus approval. Both are rated for the same voltage and current specifications under these certifications.

Q: Is the strap package configuration identical between both parts?

A: Yes. Both the LTP260 and MF-LS260 use identical strap mounting configuration with matching physical dimensions of 25.00mm length, 11.35mm width, and 1.00mm maximum thickness.

Q: What is the inventory status for these parts?

A: The LTP260 has 1085 pieces in stock (new original). The MF-LS260 has 761 pieces in stock (new original, bulk packaging).