1206SFP300F/32-2 Equivalent & Substitute Parts

Part Overview

The 1206SFP300F/32-2 is a 3A 32VDC surface mount board mount fuse in 1206 (3216 Metric) package manufactured by Littelfuse Inc. This part is classified as Obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity. Equivalent parts must maintain identical electrical ratings and mechanical compatibility to ensure proper circuit protection without redesign requirements.

Substiute Parts

1206SFP300F/32-2

Littelfuse Inc.In Stock: 11661206SFP300F/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 1206SFP300F/32-2 are qualified based on the following critical parameters:

Primary Substitution Criteria:

• Current Rating: 3 A (exact match required)
• Package / Case: 1206 (3216 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Fuse Type: Board Mount (Cartridge Style Excluded) (exact match required)
• DC Cold Resistance: 0.035 Ohms (exact match required)
• Melting I²t: 1.35 (exact match required)
• Breaking Capacity @ Rated Voltage: 50A (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Approval Agency: UL (exact match required)

Secondary Compatibility Factors:

• Voltage Rating - DC: Must be equal to or greater than 32V
• Operating Temperature Range: Must encompass or exceed -55°C ~ 125°C
• Manufacturer: Alternative qualified manufacturers acceptable

Two substitute parts meet these criteria with full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

SF-1206HI300M-2 (Bourns Inc.) is the primary recommended substitute. This part maintains exact electrical specifications including 3A current rating, 32V DC voltage rating, 1.35 melting I²t, 0.035 Ohms DC cold resistance, and 50A breaking capacity. The 1206 (3216 Metric) package provides identical mechanical compatibility. Operating temperature range extends to 150°C, exceeding the original specification. UL approval and ROHS3 compliance are maintained. Product status is Active, ensuring long-term availability and supply chain stability.

0483003.DR (Littelfuse Inc.) is an alternative substitute from the original manufacturer. This part maintains the 3A current rating and 1206 (3216 Metric) package. The voltage rating is elevated to 65V, providing additional margin above the 32V requirement. ROHS3 compliance is confirmed. However, breaking capacity, melting I²t, and DC cold resistance specifications are not provided in the available data. Product status is Active. This option is suitable when manufacturer continuity is prioritized.

Both substitutes are available in Tape & Reel (TR) packaging, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SF-1206HI300M-2 directly replace 1206SFP300F/32-2 without circuit modification?

A: Yes. SF-1206HI300M-2 maintains identical current rating (3A), voltage rating (32V), package (1206), and critical electrical parameters (melting I²t 1.35, DC cold resistance 0.035 Ohms, breaking capacity 50A). Direct substitution is supported without design changes.

Q: Why does 0483003.DR have a higher voltage rating (65V vs 32V)?

A: Higher voltage ratings provide additional safety margin in the circuit. A 65V-rated fuse operates safely at 32V and below. This does not affect circuit protection characteristics at the design voltage.

Q: Are both substitutes available in the same package format?

A: Yes. Both SF-1206HI300M-2 and 0483003.DR are supplied in Tape & Reel (TR) packaging, compatible with standard surface mount assembly equipment.

Q: What is the significance of the 1206 (3216 Metric) package designation?

A: This is the industry-standard surface mount package size for these fuses. All three parts use identical footprints and land patterns, ensuring mechanical compatibility on PCBs designed for the original 1206SFP300F/32-2.

Q: Does the extended operating temperature range of SF-1206HI300M-2 (-55°C to 150°C vs -55°C to 125°C) affect compatibility?

A: No. The extended range indicates the substitute can operate reliably across a wider temperature spectrum. It fully covers the original specification range and provides additional thermal margin.

Q: Are both substitutes RoHS3 compliant?

A: Yes. Both SF-1206HI300M-2 and 0483003.DR are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original part.

Q: What is the product status significance for long-term procurement?

A: The original 1206SFP300F/32-2 is Obsolete, indicating discontinued production. Both substitutes are Active, confirming ongoing manufacturing and supply availability for future orders and design revisions.