2JQ 1-R Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The 2JQ 1-R is a 1 A, 350 V AC / 140 V DC fast-blow glass cartridge fuse manufactured by Bel Fuse Inc. in the 2AG package format (5mm x 15mm). This fuse is designed for applications requiring fast response protection in circuits rated up to 350 V AC or 140 V DC. The part is currently active in production with full RoHS3 compliance and international approvals (CE, CSA, cURus, PSE). Equivalent and substitute parts are identified for applications where component availability, inventory levels, or specific electrical characteristics require alternative sourcing options.

Substiute Parts

2JQ 1-R

Bel Fuse Inc.In Stock: 8752JQ 1-R Datasheet

Current PartRFQ

0208001.MXP

Littelfuse Inc.In Stock: 12390208001.MXP Datasheet

SimilarRFQ

0225001.MXP

Littelfuse Inc.In Stock: 43240225001.MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2JQ 1-R are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Current Rating: 1 A (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 2AG, 5mm x 15mm (exact match required)
• Response Time: Fast Blow (exact match required)
• Voltage Rating - AC: 350 V minimum
• Voltage Rating - DC: 140 V minimum (where applicable)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

Two substitute parts meet these criteria with allowable variations in secondary electrical characteristics (melting I²t, breaking capacity, and DC cold resistance) that do not affect functional compatibility within the specified voltage and current ratings.

Parameter Comparison

Engineering Selection Recommendations

0208001.MXP (Littelfuse Inc., Series 208) is suitable as a substitute for applications operating at 350 V AC where DC voltage rating is not a critical specification or where DC operation does not exceed the unspecified DC rating of this part. This substitute maintains identical current rating, package format, response time, and operating temperature range. Approval agencies include CE, cURus, and PSE; CSA certification is not present on this variant.

0225001.MXP (Littelfuse Inc., Series 225) is suitable for applications operating at 250 V AC or lower and 125 V DC or lower. This substitute is not appropriate for circuits designed for the full 350 V AC or 140 V DC ratings of the 2JQ 1-R. However, this part offers the broadest approval agency coverage (CE, CSA, PSE, UL) and is recommended where UL certification is required. Current rating, package format, response time, and operating temperature range remain identical.

Selection between substitutes depends on the actual voltage requirements of the application circuit and required regulatory certifications.

Frequently Asked Questions (FAQ)

Q: Can 0208001.MXP be used in place of 2JQ 1-R in all applications?

A: 0208001.MXP is suitable for applications operating at 350 V AC. However, the DC voltage rating is not specified for this part. If the application requires 140 V DC operation, the DC rating of 0208001.MXP must be confirmed with the manufacturer before substitution.

Q: Is 0225001.MXP a direct replacement for 2JQ 1-R?

A: 0225001.MXP is not a direct replacement for circuits designed for 350 V AC or 140 V DC operation. This substitute is rated for 250 V AC maximum and 125 V DC maximum. Use 0225001.MXP only in applications where the circuit voltage does not exceed these ratings.

Q: What are the key parameters that must match for substitution?

A: Current rating (1 A), fuse type (cartridge glass), package format (2AG, 5mm x 15mm), response time (fast blow), and operating temperature range (-55°C ~ 125°C) must remain identical. Voltage ratings must meet or exceed the application requirements.

Q: Do all substitute parts have the same approval certifications?

A: No. The 2JQ 1-R includes CSA certification, which is not present on 0208001.MXP. The 0225001.MXP includes UL certification, which is not present on the 2JQ 1-R. Verify that the selected substitute meets all required regulatory certifications for your application.

Q: Are there differences in electrical characteristics between these parts?

A: Yes. Melting I²t values differ (0.62 for 2JQ 1-R versus 2.22 for both Littelfuse substitutes), and DC cold resistance values vary slightly. These differences do not affect functional compatibility within the specified voltage and current ratings but may influence thermal behavior in specific circuit designs.