Equivalent & Substitute Parts for 0217.040TXP

Part Overview

The 0217.040TXP is a 40 mA, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Littelfuse Inc. in the 217 series. This component is classified as obsolete, requiring identification of active equivalent parts for continued system support and procurement. The fuse is designed for 5mm x 20mm holder-based installations and provides circuit protection in applications requiring fast response characteristics.

Substiute Parts

0217.040TXP

Littelfuse Inc.In Stock: 11630217.040TXP Datasheet

Current PartRFQ

0034.1528

SCHURTER Inc.In Stock: 37080034.1528 Datasheet

DirectRFQ

BK/S500-40-R

Eaton - Electronics DivisionIn Stock: 811BK/S500-40-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0217.040TXP is determined by strict equivalence across the following parameters:

• Current Rating: 40 mA (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Breaking Capacity @ Rated Voltage: 35 A (exact match required)

Two substitute parts meet all substitution criteria and are identified as direct equivalents.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts satisfy all electrical and mechanical equivalence criteria for the 0217.040TXP.

The 0034.1528 (SCHURTER Inc., FSF 5x20 series) is an active product with full compliance documentation including CCC, cURus, and VDE certifications. This part carries 3622 units in current inventory.

The BK/S500-40-R (Eaton - Electronics Division, S500 series) is an active product with ROHS3 compliance and REACH unaffected status. This part carries 796 units in current inventory. Approval agency certifications are not specified for this part.

Selection between these two substitutes should be based on procurement availability, supply chain requirements, and certification requirements specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the 0034.1528 or BK/S500-40-R be used as direct replacements for the 0217.040TXP?

A: Yes. Both parts are direct electrical and mechanical equivalents, matching all critical parameters including current rating, voltage rating, fuse type, response time, package dimensions, and breaking capacity.

Q: Are there any differences in melting I²t values between the main part and substitutes?

A: Melting I²t values differ slightly between parts (0217.040TXP: 8E-05, 0034.1528: 0.000128, BK/S500-40-R: 0.00011). These variations fall within acceptable tolerance for fast-blow glass cartridge fuses of this rating and do not affect substitution eligibility.

Q: Do all three parts fit the same 5mm x 20mm holder?

A: Yes. All three parts share identical physical dimensions (0.205" Dia x 0.787" L / 5.20mm x 20.00mm) and require the same holder type.

Q: What certifications should I consider when selecting a substitute?

A: The 0034.1528 carries CCC, cURus, and VDE certifications. The BK/S500-40-R carries ROHS3 compliance and REACH unaffected status. Select based on your application's specific certification requirements.

Q: Is the 0217.040TXP still available?

A: The 0217.040TXP is classified as obsolete. However, 1068 units remain in current inventory. For new designs or long-term procurement, the active substitutes 0034.1528 or BK/S500-40-R are recommended.