Littelfuse 0459.062ER Surface Mount Board Mount Fuse

Part Overview

The Littelfuse 0459.062ER is a surface mount board mount fuse rated at 62 mA with 125 V AC/DC voltage rating. This fast-blow fuse is designed for circuit protection in compact electronic applications requiring SMD mounting. The part is currently active in production with full inventory availability. Alternative part numbers may be required due to supply chain considerations, manufacturing location preferences, or specific procurement requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

0459.062ER

Littelfuse Inc.In Stock: 11420459.062ER Datasheet

Current PartRFQ

0459.062UR

LittelfuseIn Stock: 47780459.062UR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0459.062UR is a parametric equivalent to the 0459.062ER. Substitution is valid based on identical electrical and mechanical specifications across all critical parameters: current rating (62 mA), voltage ratings (125 V AC/DC), response time (fast blow), package type (2-SMD, J-Lead), breaking capacity (50 A AC / 300 A DC), operating temperature range (-55°C to 125°C), physical dimensions (0.285" x 0.170" x 0.120"), and DC cold resistance (7 Ohms). Both parts belong to the PICO® 459 series and carry identical certifications (CSA, UL) and compliance status (ROHS3 Compliant, REACH Unaffected). The substitution is based strictly on these matching parameters with no deviations in electrical performance or mechanical fit.

Parameter Comparison

Engineering Selection Recommendations

Both the 0459.062ER and 0459.062UR are active production parts from Littelfuse with full regulatory compliance. Selection between these parts should be based on procurement availability and supply chain requirements. Both parts meet CSA and UL certifications and comply with ROHS3 and REACH regulations. The 0459.062UR currently has higher inventory availability (4763 Pcs vs. 1096 Pcs), which may influence procurement decisions. No technical differentiation exists between these parts; they are direct parametric equivalents suitable for identical circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can the 0459.062UR be used as a direct replacement for the 0459.062ER?

A: Yes. Both parts are parametric equivalents with identical electrical ratings (62 mA, 125 V AC/DC), response characteristics (fast blow), mechanical dimensions (0.285" x 0.170" x 0.120"), and package type (2-SMD, J-Lead). They are interchangeable for circuit protection applications.

Q: Are there any differences in certifications or compliance between these parts?

A: No. Both parts carry identical certifications (CSA, UL) and compliance status (ROHS3 Compliant, REACH Unaffected). They meet the same regulatory requirements.

Q: What determines substitution validity for these fuses?

A: Substitution is valid when current rating, voltage ratings (AC and DC), response time, package type, breaking capacity, operating temperature range, physical dimensions, and DC cold resistance are identical. All these parameters match between the 0459.062ER and 0459.062UR.

Q: Does the packaging format affect substitution?

A: Both parts are supplied in Tape & Reel (TR) packaging. The package format is identical, ensuring compatibility with standard SMD assembly processes.

Q: Are there any temperature or environmental limitations that differ between these parts?

A: No. Both parts operate across the identical temperature range (-55°C to 125°C) and have the same Moisture Sensitivity Level (MSL 1 - Unlimited), indicating no special storage or handling requirements.