Equivalent & Substitute Parts for 16R110BPR

Part Overview

The 16R110BPR is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., designed for circuit protection in applications requiring 16V, 1.1A hold current operation. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. The part operates through thermal-sensitive polymer technology, providing automatic reset capability after fault condition clearance. Substitute parts must maintain identical electrical performance characteristics and mechanical compatibility to ensure direct board-level replacement without design modification.

Substiute Parts

16R110BPR

Littelfuse Inc.In Stock: 121016R110BPR Datasheet

Current PartRFQ

RUSBF110-2

LittelfuseIn Stock: 5972RUSBF110-2 Datasheet

MFR RecommendedRFQ

PTR016V0110-TR

Eaton - Electronics DivisionIn Stock: 1057PTR016V0110-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 16R110BPR is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage rating: 16V maximum
• Hold current (Ih): 1.1A maximum
• Trip current (It): 2.2A
• Maximum current: 40A
• Time to trip: 2.3 seconds
• Initial resistance (Ri): 50 mOhms minimum
• Post-trip resistance (R1): 140 mOhms maximum
• Operating temperature range: -40°C to 85°C

Mechanical Equivalence Criteria:

• Mounting type: Through hole radial configuration
• Package type: Radial disc
• Lead spacing: 5.00–5.10 mm tolerance
• Physical dimensions: 7.40 mm length, 3.00–3.10 mm width, 14.20 mm maximum seated height
• Compliance: ROHS3 compliant

Two active substitute parts meet these criteria and are qualified for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts satisfy the complete electrical and mechanical parameter requirements for direct replacement of the obsolete 16R110BPR.

RUSBF110-2 (Littelfuse): This part maintains identical electrical specifications and mechanical dimensions to the original component. As an active product from the same manufacturer, it offers continuity of design intent and manufacturing process. The PolySwitch® series designation indicates current-generation polymeric PTC technology. Certifications include CSA, TUV, and UL approval. Cut tape packaging matches the original format. Inventory availability is substantial at 5938 units.

PTR016V0110-TR (Eaton - Electronics Division): This part provides equivalent electrical performance and mechanical compatibility within specified tolerances. Lead spacing of 5.00 mm falls within the acceptable range relative to the original 5.10 mm specification. The PTR016V series represents an alternative manufacturer source for polymeric PTC resettable fuses. TUV certification is provided. Tape & reel packaging format differs from the original cut tape format, requiring consideration for assembly process compatibility. Inventory availability is 1040 units.

Both parts are ROHS3 compliant and operate across the identical temperature range. Selection between these options depends on packaging format requirements, supply chain preferences, and certification scope alignment with end-application standards.

Frequently Asked Questions (FAQ)

Q: Can RUSBF110-2 or PTR016V0110-TR be used as direct replacements for 16R110BPR without PCB modification?

A: Yes. Both substitute parts maintain identical hold current (1.1A), trip current (2.2A), voltage rating (16V), and through-hole radial mounting configuration. Lead spacing tolerances (5.00–5.10 mm) are compatible with standard 5.08 mm (0.200 inch) PCB pad spacing. No design changes are required.

Q: What is the significance of the different lead spacing values (5.10 mm, 5.05 mm, 5.00 mm)?

A: Lead spacing variation within this range (5.00–5.10 mm) is typical for radial disc components and falls within standard PCB pad tolerance specifications. All three parts are mechanically compatible with boards designed for 5.08 mm (0.200 inch) standard spacing.

Q: Does the difference in packaging format (Cut Tape vs. Tape & Reel) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly process compatibility. Electrical and thermal characteristics remain identical. Tape & reel format (PTR016V0110-TR) is suitable for automated assembly lines, while cut tape format (RUSBF110-2) is compatible with manual or semi-automated processes.

Q: Are all three parts certified to the same standards?

A: Certification scope differs slightly. The original 16R110BPR carries cURus and TUV approval. RUSBF110-2 includes CSA, TUV, and UL certifications, providing broader regulatory coverage. PTR016V0110-TR carries TUV certification. Verify that the selected substitute meets the specific certification requirements of your end application and target market.

Q: Why is 16R110BPR classified as obsolete?

A: Obsolescence reflects manufacturer discontinuation of this specific part number. The electrical function and performance characteristics remain valid and are actively supported through equivalent part numbers from both Littelfuse and Eaton. Substitution ensures continued availability and supply chain stability.

Q: Can these parts be used interchangeably in existing inventory systems?

A: Yes, provided that your inventory management system and assembly documentation are updated to reflect the new part numbers. All three parts are functionally and mechanically equivalent for circuit protection applications requiring 16V, 1.1A hold current operation.