2JQ 4.6-R Equivalent & Substitute Parts

Part Overview

The 2JQ 4.6-R is a fast-blow glass cartridge fuse manufactured by Bel Fuse Inc., rated at 4.6 A with 350 V AC and 140 V DC voltage ratings. This component is designed for applications requiring reliable overcurrent protection in the 2AG form factor (5mm x 15mm). The part maintains active product status with 1119 units in current inventory. Substitute parts are identified when equivalent current ratings, fuse type, and mechanical packaging are maintained while accommodating variations in voltage ratings and electrical characteristics within acceptable operating parameters.

Substiute Parts

2JQ 3.5-R

Bel Fuse Inc.In Stock: 11802JQ 3.5-R Datasheet

Current PartRFQ

022503.5MXP

LittelfuseIn Stock: 1764022503.5MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2JQ 4.6-R is determined by the following critical parameters:

• Current Rating: Must be 4.6 A (exact match required)
• Fuse Type: Must be Cartridge, Glass (exact match required)
• Response Time: Must be Fast Blow (exact match required)
• Package / Case: Must be 2AG, 5mm x 15mm (exact match required)
• Mounting Type: Must require holder compatibility (exact match required)

Voltage ratings (AC and DC) may vary within the substitute part, provided the substitute part's voltage ratings do not fall below the application requirements. The 022504.6MXP from Littelfuse meets all critical substitution criteria with identical current rating, fuse type, response time, and mechanical packaging. Variations in voltage ratings (250 V AC / 125 V DC versus 350 V AC / 140 V DC) and electrical characteristics (melting I²t, breaking capacity, DC cold resistance) are acceptable when the substitute part's ratings remain adequate for the intended circuit.

Parameter Comparison

Engineering Selection Recommendations

The 022504.6MXP from Littelfuse is a qualified substitute for the 2JQ 4.6-R based on matching current rating, fuse type, response time, and mechanical packaging. Both parts maintain active product status and comply with ROHS3 and REACH requirements. The substitute part carries CE, CSA, PSE, and UL certifications, providing equivalent regulatory compliance coverage. Selection between the main part and substitute should be based on circuit voltage requirements and application-specific breaking capacity needs. The 022504.6MXP exhibits higher DC breaking capacity (10kA versus 150A) and lower melting I²t (6.7 versus 9), which may be advantageous in circuits requiring enhanced fault protection characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 022504.6MXP replace the 2JQ 4.6-R in all applications?

A: The 022504.6MXP is mechanically and electrically compatible as a substitute when circuit voltage requirements do not exceed 250 V AC or 125 V DC. If the application circuit operates at voltages above these thresholds, the original 2JQ 4.6-R must be used to maintain proper voltage margin and safety compliance.

Q: What are the key differences between these two fuses?

A: Both fuses share identical current ratings (4.6 A), fuse type (cartridge glass), response time (fast blow), and mechanical packaging (2AG, 5mm x 15mm). The primary differences are voltage ratings (350 V AC / 140 V DC for the 2JQ 4.6-R versus 250 V AC / 125 V DC for the 022504.6MXP) and electrical characteristics including melting I²t and breaking capacity.

Q: Are both fuses compatible with the same holder?

A: Yes. Both the 2JQ 4.6-R and 022504.6MXP require the same 2AG holder and are mechanically interchangeable in terms of form factor and mounting requirements.

Q: What certifications apply to the substitute part?

A: The 022504.6MXP carries CE, CSA, PSE, and UL certifications. The original 2JQ 4.6-R carries CE, CSA, cURus, and PSE certifications. Both parts meet applicable regulatory standards for their respective voltage and current ratings.

Q: How do the melting I²t values affect substitution?

A: The melting I²t value (9 for the 2JQ 4.6-R and 6.7 for the 022504.6MXP) indicates the thermal energy required to melt the fuse element. The lower I²t of the substitute part results in faster response to overcurrent conditions, which may be beneficial in sensitive circuits but should be evaluated against specific application requirements.