Equivalent & Substitute Parts for 1206SFP300FM/32-2

Part Overview

The 1206SFP300FM/32-2 is a surface mount board mount fuse manufactured by Littelfuse Inc., rated for 3A at 32VDC in a 1206 (3216 Metric) package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The fuse is designed for applications requiring fast-blow response characteristics with a breaking capacity of 50A at rated voltage.

Substiute Parts

1206SFP300FM/32-2

Littelfuse Inc.In Stock: 9111206SFP300FM/32-2 Datasheet

Current PartRFQ

0483003.DR

Littelfuse Inc.In Stock: 27170483003.DR Datasheet

MFR RecommendedRFQ

SF-1206HI300M-2

Bourns Inc.In Stock: 3722SF-1206HI300M-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1206SFP300FM/32-2 are qualified based on the following critical parameters:

• Current Rating: 3 A (exact match required)
• Package / Case: 1206 (3216 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Voltage Rating - DC: 32 V or higher (equal or greater acceptable)
• Breaking Capacity @ Rated Voltage: 50A (exact match required)
• Melting I²t: 1.35 (exact match required)
• DC Cold Resistance: 0.035 Ohms (exact match required)

Two substitute parts meet these criteria and are listed as manufacturer-recommended alternatives.

Parameter Comparison

Engineering Selection Recommendations

SF-1206HI300M-2 (Bourns Inc.) is the primary substitute for the 1206SFP300FM/32-2. This part maintains identical electrical specifications including 3A current rating, 32V DC voltage rating, 50A breaking capacity, and 1.35 melting I²t. The package dimensions are functionally equivalent at 1206 (3216 Metric), with a slightly reduced height (0.038" vs 0.046"). The part carries active product status with UL approval and ROHS3 compliance, providing long-term availability and regulatory support. Operating temperature range extends to 150°C, exceeding the original specification.

0483003.DR (Littelfuse Inc.) is an alternative substitute with identical current rating and package. This part features a higher voltage rating of 65V DC, making it suitable for applications where voltage margin is beneficial. However, breaking capacity and melting I²t specifications are not provided for this part. Product status is active with ROHS3 and REACH compliance.

Frequently Asked Questions (FAQ)

Q: Can SF-1206HI300M-2 be used as a direct replacement for 1206SFP300FM/32-2?

A: Yes. Both parts share identical current rating (3A), voltage rating (32V DC), breaking capacity (50A), melting I²t (1.35), and DC cold resistance (0.035 Ohms). Package dimensions are functionally equivalent in the 1206 (3216 Metric) form factor. The substitute has active product status and UL approval.

Q: What is the difference between SF-1206HI300M-2 and 0483003.DR?

A: SF-1206HI300M-2 maintains exact electrical parity with the original part. 0483003.DR has a higher voltage rating (65V vs 32V) but lacks published breaking capacity and melting I²t specifications. SF-1206HI300M-2 is the preferred substitute for direct replacement.

Q: Are there packaging differences between these parts?

A: All three parts use the 1206 (3216 Metric) surface mount package. SF-1206HI300M-2 has a slightly reduced height of 0.038" compared to the original 0.046", which may affect PCB layout in space-constrained applications.

Q: What compliance certifications apply to the substitute parts?

A: SF-1206HI300M-2 carries UL approval and ROHS3 compliance. 0483003.DR is ROHS3 compliant and REACH unaffected. Both meet the regulatory requirements of the original part.

Q: Why is the original part marked as obsolete?

A: The 1206SFP300FM/32-2 is classified as obsolete by the manufacturer. The listed substitutes are active products with equivalent or superior specifications, ensuring continued design support and procurement availability.