Equivalent & Substitute Parts for 0659P2500-13

Part Overview

The 0659P2500-13 is a ceramic cartridge fuse manufactured by Bel Fuse Inc., rated for 2.5 A at 250 V AC/DC with slow-blow response characteristics. This through-hole component is designed for applications requiring overcurrent protection in industrial and consumer electronics. The part maintains active product status with 977 units in current inventory. Equivalent substitute parts are necessary to ensure supply chain continuity, support design flexibility across manufacturing partners, and maintain operational availability when primary sources experience allocation constraints.

Substiute Parts

0659P2500-13

Bel Fuse Inc.In Stock: 10150659P2500-13 Datasheet

Current PartRFQ

021502.5MXESPP

Littelfuse Inc.In Stock: 1583021502.5MXESPP Datasheet

Parametric EquivalentRFQ

TUC UDA-P 2.5A 250V (PF)

ConquerIn Stock: 2075TUC UDA-P 2.5A 250V (PF) Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0659P2500-13 is determined by strict equivalence across the following parameters:

• Current Rating: 2.5 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Package / Case: 5mm x 20mm (Axial) (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 1.5 kA (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the primary part number.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and comply with RoHS3 and REACH requirements. Selection among these interchangeable ceramic fuse cartridges should be based on:

• Approval agency requirements specific to the end application (CQC, cURus, PSE, VDE for 0659P2500-13; CE, CQC, CSA, KC, PSE, UR, VDE for 021502.5MXESPP; CCC, cURus, KC, PSE, TUV for TUC UDA-P 2.5A 250V)
• Current inventory availability and supply chain logistics
• DC cold resistance and melting I²t characteristics, which fall within acceptable tolerance ranges across all three options

Frequently Asked Questions (FAQ)

Q: Can 021502.5MXESPP be used as a direct replacement for 0659P2500-13?

A: Yes. Both parts are 2.5 A, 250 V AC/DC ceramic cartridge fuses in 5mm x 20mm axial packages with slow-blow response and 1.5 kA breaking capacity. Electrical and mechanical parameters are equivalent.

Q: What is the difference in melting I²t between these parts?

A: Melting I²t values are 25 (0659P2500-13), 22.29 (021502.5MXESPP), and 24.75 (TUC UDA-P 2.5A 250V). These variations fall within normal manufacturing tolerances for ceramic fuses and do not affect interchangeability for standard 2.5 A protection applications.

Q: Are there any compliance differences between the three parts?

A: Each part carries different approval agency certifications. Verify that the selected substitute meets all regulatory requirements for your specific application region and end-use classification.

Q: Do these parts require any PCB layout modifications?

A: No. All three parts share identical 5mm x 20mm axial through-hole package dimensions and mounting characteristics. Direct PCB footprint compatibility is maintained.

Q: What is the significance of DC cold resistance values?

A: DC cold resistance (0.036 Ohms for 0659P2500-13, 0.0386 Ohms for 021502.5MXESPP, 0.0385 Ohms for TUC UDA-P 2.5A 250V) represents the fuse element resistance at room temperature. Minor variations across these parts are within acceptable engineering tolerances and do not impact circuit performance in standard protection applications.