Equivalent & Substitute Parts for 600R160F

Part Overview

The 600R160F is a Polymeric PTC Resettable Fuse manufactured by Littelfuse Inc., rated for 60V maximum voltage with 160 mA hold current. This component is classified as Obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The 600R160F operates within the POLY-FUSE® 600R series and is designed for through-hole radial mounting in protective circuit applications.

Substiute Parts

600R160F

Littelfuse Inc.In Stock: 1136600R160F Datasheet

Current PartRFQ

TRF600-160

Littelfuse Inc.In Stock: 2062TRF600-160 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 600R160F is determined by the following critical parameters:

• Current - Hold (Ih) (Max): Must remain at 160 mA to maintain circuit protection threshold
• Resistance - Initial (Ri) and Post Trip (R1): Must match specified ranges to preserve circuit behavior
• Operating Temperature Range: Must support -40°C ~ 85°C operational envelope
• Mounting Type and Package: Must be Through Hole Radial, Disc configuration
• Physical Dimensions and Lead Spacing: Must accommodate existing PCB layouts

The TRF600-160 qualifies as a substitute based on matching hold current (160 mA), identical resistance specifications, compatible operating temperature range, and identical mounting configuration. The primary distinction is elevated maximum voltage rating (250V vs. 60V), which represents an enhancement rather than a limitation for substitution purposes.

Parameter Comparison

Engineering Selection Recommendations

The TRF600-160 is the designated manufacturer-recommended substitute for the obsolete 600R160F. Selection of TRF600-160 is supported by the following factors:

• Active product status ensures ongoing availability and manufacturer support
• Identical hold current (160 mA) and trip current (320 mA) preserve circuit protection characteristics
• Matching resistance specifications (Ri: 4 Ohms min, R1: 18 Ohms max) maintain electrical performance
• Compatible operating temperature range (-40°C ~ 85°C) supports equivalent thermal envelope
• Identical physical dimensions and mounting configuration enable direct PCB substitution
• Enhanced voltage rating (250V vs. 60V) provides additional design margin without performance degradation
• Expanded approval certifications (CSA, TUV, UL vs. cURus, TUV) broaden compliance scope
• ROHS3 compliance maintained across both components

Frequently Asked Questions (FAQ)

Q: Can TRF600-160 be used as a direct replacement for 600R160F in existing designs?

A: Yes. The TRF600-160 maintains identical hold current, trip current, resistance specifications, operating temperature range, and physical dimensions. Lead spacing variance (0.201" vs. 0.197") is minimal and does not preclude PCB compatibility.

Q: What is the primary reason for substitution?

A: The 600R160F is classified as Obsolete. The TRF600-160 is an Active product from the same manufacturer, ensuring continued availability and technical support.

Q: Does the higher voltage rating of TRF600-160 (250V vs. 60V) affect circuit operation?

A: No. A higher voltage rating does not degrade performance in lower-voltage applications. The TRF600-160 operates identically at 60V and below, with enhanced protection margin at higher voltages.

Q: Are there compliance differences between the two parts?

A: Both components are ROHS3 compliant. The TRF600-160 carries broader approval certifications (CSA, TUV, UL) compared to the 600R160F (cURus, TUV), providing expanded regulatory coverage.

Q: What are the critical parameters for substitution compatibility?

A: Hold current (160 mA), trip current (320 mA), initial resistance (4 Ohms min), post-trip resistance (18 Ohms max), operating temperature range (-40°C ~ 85°C), and through-hole radial mounting configuration must remain constant.

Q: Is the lead spacing difference significant?

A: The variance (0.201" to 0.197") is 0.004" and falls within standard PCB tolerance ranges for radial component mounting. No design modification is required.