CB61F8A-TR2 Equivalent & Substitute Parts

Part Overview

The CB61F8A-TR2 is an 8 A, 125 V AC/DC surface mount board mount fuse manufactured by Eaton - Electronics Division. This component is classified as a fast blow fuse in 2-SMD, square end block package configuration, designed for printed circuit board integration without cartridge style housing. The part maintains Active product status with 5758 units in current inventory stock.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across alternative packaging configurations within the same series and manufacturer specification set.

Substiute Parts

CB61F8A-TR2

Eaton - Electronics DivisionIn Stock: 5788CB61F8A-TR2 Datasheet

Current PartRFQ

CB61F8A-TR1

Eaton - Electronics DivisionIn Stock: 5922CB61F8A-TR1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CB61F8A-TR2 is determined by strict equivalence across the following parameters:

Electrical Parameters (Non-Negotiable):

• Current Rating: 8 A
• Voltage Rating - AC: 125 V
• Voltage Rating - DC: 125 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 100 A AC, 300 A DC
• Melting I²t: 19.5
• DC Cold Resistance: 0.008 Ohms

Mechanical Parameters (Non-Negotiable):

• Mounting Type: Surface Mount
• Package / Case: 2-SMD, Square End Block
• Size / Dimension: 0.240" L x 0.101" W x 0.101" H (6.10mm x 2.57mm x 2.57mm)

Compliance Parameters (Non-Negotiable):

• RoHS Status: ROHS3 Compliant
• Approval Agency: CQC, cULus, PSE
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Series Requirement:

• Series: CB61F

Substitute parts must maintain identical values across all listed parameters. Packaging configuration (Tape & Reel designation) may vary without affecting functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both CB61F8A-TR2 and CB61F8A-TR1 are Active status products manufactured by Eaton - Electronics Division within the CB61F series. Both parts satisfy identical electrical specifications (8 A, 125 V AC/DC, fast blow response, 19.5 melting I²t) and mechanical requirements (surface mount, 2-SMD square end block, 6.10mm x 2.57mm x 2.57mm dimensions).

Regulatory compliance is equivalent across both parts: ROHS3 compliant with CQC, cULus, and PSE approvals. Moisture sensitivity level is identical at MSL 1 (Unlimited), indicating no special handling requirements during storage or assembly.

The primary distinction between these parts is packaging configuration designation (TR2 versus TR1), which reflects tape and reel supply variations. This distinction does not affect functional performance, electrical characteristics, or mechanical compatibility in circuit board applications.

Selection between CB61F8A-TR2 and CB61F8A-TR1 is determined by supply chain availability and packaging procurement requirements rather than technical performance criteria.

Frequently Asked Questions (FAQ)

Q: Can CB61F8A-TR1 be used as a direct replacement for CB61F8A-TR2 in production assembly?

A: Yes. Both parts are electrically and mechanically identical. They share the same current rating (8 A), voltage ratings (125 V AC/DC), response time (fast blow), package configuration (2-SMD square end block), and physical dimensions (6.10mm x 2.57mm x 2.57mm). Both maintain Active product status and identical regulatory approvals.

Q: What does the TR designation indicate in these part numbers?

A: TR indicates Tape & Reel packaging format. TR2 and TR1 represent different tape and reel supply configurations from the manufacturer. This packaging distinction does not affect the electrical or mechanical performance of the fuse component itself.

Q: Are there any compliance or certification differences between CB61F8A-TR2 and CB61F8A-TR1?

A: No. Both parts carry identical regulatory approvals: CQC, cULus, and PSE. Both are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the breaking capacity of these fuses?

A: The breaking capacity is 100 A AC and 300 A DC at rated voltage (125 V AC/DC).

Q: What is the DC cold resistance specification?

A: The DC cold resistance for both CB61F8A-TR2 and CB61F8A-TR1 is 0.008 Ohms.

Q: Can these fuses be used in both AC and DC circuits?

A: Yes. Both parts are rated for 125 V AC and 125 V DC operation, making them suitable for dual-voltage applications within these specifications.

Q: What does the melting I²t value of 19.5 indicate?

A: The melting I²t value represents the thermal energy required to melt the fuse element. This value is identical for both parts and determines the fuse's response characteristics under overcurrent conditions.

Q: Are there any temperature operating range specifications provided?

A: Operating temperature specifications are not provided in the available technical parameters for either part.