Equivalent & Substitute Parts for Littelfuse 06641.25ZRLL

Part Overview

The Littelfuse 06641.25ZRLL is a 1.25 A, 250 V AC/DC board mount fuse with slow blow response characteristics, designed for through-hole radial mounting in a can-style vertical package. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production support and design updates. Substitute parts must maintain identical electrical ratings and mechanical compatibility to ensure proper circuit protection without redesign.

Substiute Parts

06641.25ZRLL

LittelfuseIn Stock: 85206641.25ZRLL Datasheet

Current PartRFQ

38211250000

LittelfuseIn Stock: 2011638211250000 Datasheet

DirectRFQ

0034.6916

SCHURTER Inc.In Stock: 153030034.6916 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

• Current Rating: 1.25 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package Style: Radial, Can, Vertical (exact match required)
• Breaking Capacity: 100 A @ Rated Voltage (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The following parts meet all substitution criteria:

1. Littelfuse 38211250000 (TR5® 382 Series) – Active status, Cut Tape packaging
2. SCHURTER 0034.6916 (MXT 250 Series) – Active status, Bulk packaging

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are classified as active products, ensuring long-term availability and ongoing manufacturer support. Selection between the two should be based on:

Littelfuse 38211250000: Maintains manufacturer continuity within the Littelfuse product line (TR5® 382 Series). Offers Cut Tape packaging suitable for automated assembly processes. Lower DC cold resistance (0.05 Ohms) compared to the original part. Holds broader approval certifications including cURus, KC, and PSE/JET in addition to CCC, SEMKO, and VDE.

SCHURTER 0034.6916: Cross-manufacturer alternative from SCHURTER Inc. (MXT 250 Series). Supplied in Bulk packaging. Melting I²t value (6.3) matches the original part exactly. Holds equivalent approval certifications including cURus, KC, and PSE/JET alongside CCC and VDE.

Both parts satisfy all electrical and mechanical requirements for direct substitution. Dimensional variations are within acceptable tolerances for through-hole radial mounting applications.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 38211250000 be used as a direct replacement for the obsolete 06641.25ZRLL?

A: Yes. Both parts share identical current rating (1.25 A), voltage rating (250 V AC), response time (Slow Blow), mounting type (Through Hole), package style (Radial, Can, Vertical), breaking capacity (100 A), and operating temperature range (-40°C to 85°C). Dimensional height differs by 0.018" (0.45mm), which does not affect through-hole mounting compatibility.

Q: What is the difference between the Littelfuse and SCHURTER substitutes?

A: Both parts meet all electrical and mechanical substitution criteria. The primary differences are manufacturer (Littelfuse vs. SCHURTER), packaging format (Cut Tape vs. Bulk), and minor variations in DC cold resistance and melting I²t values. Selection depends on supply chain preference and assembly process requirements.

Q: Are there packaging considerations when switching from the original part?

A: The original part packaging type is not specified in the technical data. The Littelfuse 38211250000 is supplied in Cut Tape (CT) format, suitable for pick-and-place assembly. The SCHURTER 0034.6916 is supplied in Bulk format. Confirm packaging compatibility with your assembly process before procurement.

Q: Do both substitute parts maintain RoHS3 compliance?

A: Yes. Both the Littelfuse 38211250000 and SCHURTER 0034.6916 are ROHS3 Compliant, matching the compliance status of the original 06641.25ZRLL.

Q: What approval certifications do the substitute parts hold?

A: Littelfuse 38211250000 holds CCC, cURus, KC, PSE/JET, SEMKO, and VDE certifications. SCHURTER 0034.6916 holds CCC, cURus, KC, PSE/JET, and VDE certifications. Both exceed the certification requirements of the original part.