2JQ 2.5 Equivalent & Substitute Parts

Part Overview

The 2JQ 2.5 is a fast-blow glass cartridge fuse rated at 2.5 A, 350 V AC, and 140 V DC, manufactured by Bel Fuse Inc. This component is designed for use in 2AG holder applications with a 5mm x 15mm form factor. The main part number 2JQ 2.5 is currently listed as obsolete, making identification of active equivalent parts essential for ongoing system support and procurement.

Substiute Parts

2JQ 2.5

Bel Fuse Inc.In Stock: 12192JQ 2.5 Datasheet

Current PartRFQ

2JQ 2.5-R

Bel Fuse Inc.In Stock: 27292JQ 2.5-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2JQ 2.5 is determined by strict equivalence across electrical and mechanical parameters. The substitute part 2JQ 2.5-R maintains identical specifications for current rating, voltage ratings (AC and DC), fuse type, response time, package dimensions, breaking capacity, melting I²t, operating temperature range, and regulatory approvals. Both parts are designed for 2AG holder mounting and share the same form factor (5mm x 15mm). The primary distinction is product status: the original 2JQ 2.5 is obsolete, while 2JQ 2.5-R is active and available in bulk packaging. Substitution is valid when these key parameters are matched.

Parameter Comparison

Engineering Selection Recommendations

The 2JQ 2.5-R is the direct active equivalent for the obsolete 2JQ 2.5. Both parts are manufactured by Bel Fuse Inc. and carry identical electrical and mechanical specifications, including current rating, voltage ratings, fuse type, response time, package form factor, breaking capacity, and melting I²t characteristics. Both parts hold the same regulatory approvals (CE, CSA, cURus, PSE).

The 2JQ 2.5-R offers improved compliance status: it is ROHS3 compliant, whereas the original 2JQ 2.5 is RoHS non-compliant. The DC cold resistance of 2JQ 2.5-R (0.031 Ohms) is marginally lower than the original (0.034 Ohms), which is within acceptable tolerance for this component class and does not affect functional equivalence.

For new designs and ongoing procurement, 2JQ 2.5-R is the appropriate selection due to its active product status and improved compliance profile.

Frequently Asked Questions (FAQ)

Q: Can 2JQ 2.5-R be used as a direct replacement for 2JQ 2.5?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical current ratings (2.5 A), voltage ratings (350 V AC, 140 V DC), fuse type (cartridge, glass), response time (fast blow), package dimensions (2AG, 5mm x 15mm), breaking capacity, and melting I²t. Both are approved by CE, CSA, cURus, and PSE.

Q: What is the primary reason for substitution?

A: The 2JQ 2.5 is obsolete. The 2JQ 2.5-R is the active equivalent part from the same manufacturer and series, ensuring continued availability and supply chain continuity.

Q: Are there packaging differences between these parts?

A: The original 2JQ 2.5 is available in standard packaging, while 2JQ 2.5-R is supplied in bulk packaging. Both parts are identical in form factor and holder requirements (2AG, 5mm x 15mm).

Q: Does the DC cold resistance difference affect performance?

A: No. The DC cold resistance of 2JQ 2.5-R (0.031 Ohms) versus 2JQ 2.5 (0.034 Ohms) represents a negligible difference within acceptable tolerance for this component class and does not impact functional performance or circuit behavior.

Q: What compliance improvements does 2JQ 2.5-R offer?

A: The 2JQ 2.5-R is ROHS3 compliant, whereas the original 2JQ 2.5 is RoHS non-compliant. Both parts maintain REACH unaffected status and EAR99 export classification.