Littelfuse 0218.063TXP Glass Cartridge Fuse 63mA 250VAC 5x20mm

Part Overview

The Littelfuse 0218.063TXP is a slow-blow glass cartridge fuse rated at 63 mA, 250 V AC/DC with a 5mm x 20mm form factor. This fuse is designed for circuits requiring overcurrent protection with delayed response characteristics. The part maintains active product status and is widely stocked in bulk packaging. Alternative equivalent models are available to support supply chain flexibility and application-specific requirements.

Substiute Parts

0218.063TXP

Littelfuse Inc.In Stock: 11000218.063TXP Datasheet

Current PartRFQ

0218.063HXP

Littelfuse Inc.In Stock: 10580218.063HXP Datasheet

Parametric EquivalentRFQ

0218.063MXP

Littelfuse Inc.In Stock: 19930218.063MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0218.063TXP are determined by strict equivalence across the following critical parameters:

• Current Rating: 63 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 5mm x 20mm (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Approval Agencies: Minimum compliance with CCC, CE, CSA, SEMKO, UL, VDE

The substitute parts 0218.063HXP and 0218.063MXP meet all critical electrical and mechanical parameters. Variations in DC Cold Resistance and Melting I²t values remain within acceptable tolerances for the specified application category and do not affect substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

All three parts—0218.063TXP, 0218.063HXP, and 0218.063MXP—are active Littelfuse products with full compliance to CCC, CE, CSA, SEMKO, UL, and VDE standards. Selection between these equivalents is based on inventory availability and application-specific requirements:

• 0218.063TXP: Primary specification with 1062 units in stock
• 0218.063HXP: Direct equivalent with 1045 units in stock
• 0218.063MXP: Direct equivalent with highest inventory at 1899 units in stock

All parts are ROHS3 compliant and REACH unaffected. The variations in DC Cold Resistance and Melting I²t do not affect functional equivalence for the specified 63 mA, 250 V AC/DC slow-blow cartridge fuse application.

Frequently Asked Questions (FAQ)

Q: Can 0218.063HXP and 0218.063MXP be used interchangeably with 0218.063TXP?

A: Yes. Both substitute parts meet all critical electrical and mechanical parameters: 63 mA current rating, 250 V AC voltage rating, slow-blow response, 5mm x 20mm form factor, and -55°C to 125°C operating temperature range. All three parts require a fuse holder for installation.

Q: What is the significance of the different DC Cold Resistance values?

A: DC Cold Resistance variations (14.268 Ohms for 0218.063TXP versus 17.65 Ohms for 0218.063HXP and 0218.063MXP) reflect internal design differences but do not affect substitution eligibility. Both values are within acceptable tolerances for this fuse category.

Q: Are there differences in approval certifications between these parts?

A: All three parts carry CCC, CE, CSA, SEMKO, UL, and VDE certifications. The 0218.063TXP includes KC approval, while 0218.063HXP and 0218.063MXP include K-MARK approval. These represent equivalent regional compliance standards.

Q: What does "Slow Blow" response time mean?

A: Slow Blow fuses tolerate temporary current surges without opening, responding only to sustained overcurrent conditions. This characteristic is identical across all three equivalent parts.

Q: Do these fuses require a specific holder type?

A: All three parts are cartridge fuses requiring a compatible 5mm x 20mm fuse holder. The holder must be selected separately based on circuit voltage and current requirements.

Q: Which part should be selected based on inventory?

A: 0218.063MXP offers the highest inventory availability at 1899 units. 0218.063TXP and 0218.063HXP are also well-stocked with 1062 and 1045 units respectively. Selection should be based on supply chain requirements and lead time considerations.