Littelfuse 0307009.M Glass Cartridge Fuse 9A 32VAC 7AG

Part Overview

The Littelfuse 0307009.M is a fast-blow glass cartridge fuse rated for 9 amperes at 32 volts AC. This component is designed for circuits requiring AC protection in the SFE series and is mounted within a holder assembly using the standard 7AG form factor (1/4" x 7/8"). The part maintains active product status with full RoHS3 compliance and UL approval. Alternative equivalent parts may be required due to inventory availability, specific DC voltage requirements, or application-specific compliance needs.

Substiute Parts

0307009.M

Littelfuse Inc.In Stock: 8190307009.M Datasheet

Current PartRFQ

0SFE009.V

Littelfuse Inc.In Stock: 10650SFE009.V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0SFE009.V qualifies as a parametric equivalent to the 0307009.M based on the following critical substitution criteria:

Current Rating: Both parts are rated for 9 amperes, ensuring identical overcurrent protection thresholds.

Voltage Rating - AC: Both parts maintain 32 volts AC rating, preserving AC circuit protection capability.

Fuse Type and Response Time: Both are fast-blow glass cartridge fuses, providing identical circuit response characteristics.

Package / Case: Both use the 7AG form factor (1/4" x 7/8"), ensuring mechanical and electrical compatibility within existing holder assemblies.

Physical Dimensions: Both measure 0.250" diameter x 0.875" length (6.35mm x 22.23mm), confirming holder compatibility.

Series: Both belong to the SFE series, maintaining design consistency.

RoHS and Compliance Status: Both are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

The primary distinction is that the 0SFE009.V includes an explicit 32 volts DC rating, whereas the 0307009.M specifies only AC voltage. This addition does not restrict substitution in AC-only applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 0307009.M and 0SFE009.V are active Littelfuse products with full RoHS3 compliance and REACH unaffected status. The 0307009.M carries UL approval, while the 0SFE009.V does not specify an approval agency in the provided data. For applications requiring explicit UL certification, the 0307009.M remains the specified choice. The 0SFE009.V is suitable for AC-only circuits and offers the additional benefit of DC voltage rating capability, making it applicable to mixed-voltage environments. Both parts are mechanically and electrically interchangeable within 7AG holder assemblies for 9-ampere, 32-volt AC protection circuits.

Frequently Asked Questions (FAQ)

Q: Can the 0SFE009.V replace the 0307009.M in an AC-only circuit?

A: Yes. Both parts share identical current rating (9 A), AC voltage rating (32 V), response time (fast blow), and 7AG package form factor. The additional DC voltage rating on the 0SFE009.V does not affect AC circuit operation.

Q: What is the significance of the DC voltage rating on the 0SFE009.V?

A: The 0SFE009.V explicitly rates 32 volts DC, whereas the 0307009.M specifies only AC voltage. This allows the 0SFE009.V to be used in dual-voltage or DC applications where the 0307009.M may not be specified.

Q: Are both parts compatible with the same holder assembly?

A: Yes. Both parts use the 7AG form factor (1/4" x 7/8") and require a compatible 7AG holder. Physical dimensions are identical at 0.250" diameter x 0.875" length.

Q: What is the difference in approval certifications?

A: The 0307009.M carries UL approval. The 0SFE009.V does not specify an approval agency in available documentation. For applications requiring UL certification, the 0307009.M is the specified part.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance restrictions apply to substitution in either direction for regulatory purposes.

Q: What is the melting I²t value for the 0307009.M?

A: The melting I²t is 0.0089. This value is not provided for the 0SFE009.V in the available data.