Equivalent & Substitute Parts for BK1/TDC11-1.5-R

Part Overview

The BK1/TDC11-1.5-R is a 1.5 A, 250 V AC/DC glass cartridge fuse manufactured by Eaton - Electronics Division. This slow-blow fuse is designed for applications requiring overcurrent protection in circuits rated up to 250 V. The part is actively produced and maintained in inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component sourcing, inventory management, or supply chain continuity.

Substiute Parts

BK1/TDC11-1.5-R

Eaton - Electronics DivisionIn Stock: 788BK1/TDC11-1.5-R Datasheet

Current PartRFQ

3SB 1.5-R

Bel Fuse Inc.In Stock: 29563SB 1.5-R Datasheet

Parametric EquivalentRFQ

TSA-1.5A

OptiFuseIn Stock: 2572TSA-1.5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK1/TDC11-1.5-R are qualified based on the following critical parameters:

• Current Rating: 1.5 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Physical Dimensions: 0.250" Dia x 1.252" L (exact match required)

All identified substitute parts meet these core electrical and mechanical specifications, ensuring direct compatibility in applications designed for the BK1/TDC11-1.5-R.

Parameter Comparison

Engineering Selection Recommendations

All three parts—BK1/TDC11-1.5-R, 3SB 1.5-R, and TSA-1.5A—are active products with equivalent electrical and mechanical specifications. Selection among these parts should be based on:

Compliance and Certifications: The 3SB 1.5-R carries CE, CSA, cULus, and PSE approvals. The TSA-1.5A carries cULus and UL 248 approvals. Applications requiring specific regional certifications should reference the approval agency requirements.

RoHS Compliance: All parts meet RoHS requirements. The BK1/TDC11-1.5-R is RoHS Compliant; both 3SB 1.5-R and TSA-1.5A are ROHS3 Compliant.

Breaking Capacity: The 3SB 1.5-R offers 200A breaking capacity, the TSA-1.5A offers 100A, and the BK1/TDC11-1.5-R offers 15A. Applications with higher fault current requirements should select accordingly.

Inventory Availability: The BK1/TDC11-1.5-R has 749 units in stock, the 3SB 1.5-R has 2883 units, and the TSA-1.5A has 2544 units.

Frequently Asked Questions (FAQ)

Q: Can the 3SB 1.5-R or TSA-1.5A be used as a direct replacement for the BK1/TDC11-1.5-R?

A: Yes. All three parts share identical electrical ratings (1.5 A, 250 V AC), fuse type (cartridge, glass), response time (slow blow), and physical dimensions (0.250" Dia x 1.252" L). They are mechanically and electrically interchangeable in applications designed for the BK1/TDC11-1.5-R.

Q: What is the significance of the different breaking capacities listed for each part?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt at its rated voltage. The BK1/TDC11-1.5-R has a 15A breaking capacity, the TSA-1.5A has 100A, and the 3SB 1.5-R has 200A. Applications with higher fault currents should select a part with appropriate breaking capacity.

Q: Do all three parts require the same holder?

A: Yes. All three parts use the 3AB and 3AG package standard with 1/4" x 1-1/4" dimensions and require a compatible fuse holder for installation.

Q: Are there temperature operating range differences between these parts?

A: The BK1/TDC11-1.5-R does not specify an operating temperature range. The 3SB 1.5-R and TSA-1.5A both specify -55°C ~ 125°C. Applications with extreme temperature requirements should verify compatibility with the selected part.

Q: What certifications should I consider when selecting a substitute?

A: The 3SB 1.5-R carries CE, CSA, cULus, and PSE approvals. The TSA-1.5A carries cULus and UL 248 approvals. Select based on the regulatory requirements of your application region and industry standards.