RLD60P017XF Equivalent & Substitute Parts

Part Overview

The RLD60P017XF is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., rated for 60V maximum voltage with a 170 mA hold current. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The part functions as a thermal protection device in through-hole radial configuration, suitable for circuit protection applications requiring automatic reset capability.

Substiute Parts

RLD60P017XF

Littelfuse Inc.In Stock: 827RLD60P017XF Datasheet

Current PartRFQ

RXEF017-AP

LittelfuseIn Stock: 1385RXEF017-AP Datasheet

DirectRFQ

60R017XU

LittelfuseIn Stock: 128760R017XU Datasheet

MFR RecommendedRFQ

60R017XPR

Littelfuse Inc.In Stock: 305760R017XPR Datasheet

Parametric EquivalentRFQ

MF-R017

Bourns Inc.In Stock: 3465MF-R017 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RLD60P017XF is determined by strict equivalence across the following critical parameters: maximum voltage rating (60V), hold current (170 mA), trip current (340 mA), maximum current (40 A), time to trip (3 s), initial resistance (3.3 Ohms minimum), post-trip resistance (8 Ohms maximum), operating temperature range (-40°C to 85°C), mounting type (through hole), package configuration (radial disc), and lead spacing (0.201" / 5.10mm).

The substitute parts are grouped as follows:

Direct Manufacturer Equivalent: RXEF017-AP (Littelfuse PolySwitch® series) maintains identical electrical specifications with minor dimensional variance in thickness (0.118" vs 0.122") and lead spacing (0.199" vs 0.201"), representing a direct functional replacement with enhanced compliance certifications.

Manufacturer Recommended Equivalents: 60R017XU (Littelfuse POLY-FUSE® 60R series) and 60R017XPR (Littelfuse POLY-FUSE® 60R series) provide identical dimensional and electrical characteristics to the original part, with active product status and improved RoHS compliance.

Cross-Manufacturer Equivalent: MF-R017 (Bourns Multifuse® series) delivers equivalent electrical performance with identical physical dimensions and lead spacing, with the exception of initial resistance specification (2 Ohms minimum vs 3.3 Ohms minimum).

Parameter Comparison

Engineering Selection Recommendations

For new designs and production transitions, 60R017XPR is the primary selection due to active product status, identical dimensional specifications, ROHS3 compliance, and availability of 2972 units in stock. This part maintains exact compatibility with the original RLD60P017XF footprint and electrical characteristics.

60R017XU serves as the manufacturer-recommended alternative, offering identical specifications with active status and 1190 units available. This part is suitable for applications where bulk packaging is preferred.

RXEF017-AP provides an active alternative with enhanced certification coverage (CQC, CSA, TUV, UL) and superior moisture sensitivity rating (MSL 1). Minor dimensional variations in thickness (0.118" vs 0.122") and lead spacing (0.199" vs 0.201") are within acceptable tolerance for standard through-hole PCB applications.

MF-R017 (Bourns) is a cross-manufacturer equivalent with active status and comprehensive certifications. The initial resistance specification of 2 Ohms (versus 3.3 Ohms) represents a lower baseline impedance that may affect circuit behavior in applications sensitive to initial resistance characteristics.

The RLD60P017XF's obsolete status and RoHS non-compliance status make transition to an active, compliant substitute necessary for regulatory adherence and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can RXEF017-AP be used as a direct replacement for RLD60P017XF despite the thickness and lead spacing differences?

A: Yes. The thickness variance (0.118" vs 0.122") and lead spacing variance (0.199" vs 0.201") fall within acceptable mechanical tolerances for standard through-hole PCB designs. All electrical parameters remain identical, ensuring functional equivalence.

Q: What is the primary difference between 60R017XU and 60R017XPR?

A: Both parts are electrically and dimensionally identical. The distinction is packaging format: 60R017XU is supplied in bulk, while 60R017XPR is supplied in cut tape. Selection depends on assembly process requirements and inventory management preferences.

Q: Why does MF-R017 have a lower initial resistance specification (2 Ohms vs 3.3 Ohms)?

A: MF-R017 is manufactured by Bourns using the Multifuse® technology platform, which has different baseline resistance characteristics than Littelfuse's POLY-FUSE® technology. Both meet the 8 Ohms maximum post-trip specification. Applications with strict initial resistance requirements should confirm compatibility with circuit design parameters.

Q: Is RLD60P017XF still available for purchase?

A: RLD60P017XF is classified as obsolete. However, 772 units are currently in stock. For new designs and long-term supply assurance, transition to an active substitute part is recommended.

Q: Which substitute part has the best regulatory compliance certifications?

A: RXEF017-AP carries the broadest certification coverage (CQC, CSA, TUV, UL) and the highest moisture sensitivity rating (MSL 1 - Unlimited). This part is optimal for applications requiring comprehensive international regulatory approval.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed (RXEF017-AP, 60R017XU, 60R017XPR, MF-R017) are ROHS3 compliant. The original RLD60P017XF is RoHS non-compliant, making compliance upgrade a key benefit of substitution.