SCF9550-30-10 Equivalent & Substitute Parts

Part Overview

The SCF9550-30-10 is a triggerable board mount surface mount fuse manufactured by Eaton - Electronics Division. This component is rated for 30A at 62 VDC with fast blow response characteristics and is designed for battery protection applications. The part is currently active in production with 3590 units in stock.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across different manufacturers. Alternative sources for this component may be required due to supply chain considerations, lead time requirements, or design flexibility needs.

Substiute Parts

SCF9550-30-10

Eaton - Electronics DivisionIn Stock: 3639SCF9550-30-10 Datasheet

Current PartRFQ

ITV9550L4030MR

Littelfuse Inc.In Stock: 753ITV9550L4030MR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCF9550-30-10 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Current Rating: 30A (exact match required)
• Voltage Rating (DC): 62 VDC (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 80A (exact match required)

Mechanical Compatibility Requirements:

• Mounting Type: Surface Mount (exact match required)
• Fuse Type: Board Mount (exact match required)
• Package Type: Nonstandard SMD (exact match required)

Regulatory & Compliance Requirements:

• RoHS Status: ROHS3 Compliant (exact match required)
• Approval Agency: cURus certification (minimum requirement)

Application Requirements:

• Primary Application: Battery Protection (exact match required)
• Triggerable Voltage Range: 28 ~ 47V operational window (substitute must fall within or overlap this range)

The ITV9550L4030MR from Littelfuse Inc. meets all substitution criteria for the SCF9550-30-10.

Parameter Comparison

Engineering Selection Recommendations

SCF9550-30-10 (Eaton - Electronics Division)

Primary selection for applications requiring the original specification. This component carries cURus approval and is actively manufactured. Current inventory of 3590 units supports immediate availability. Operating temperature range of -20°C to 60°C accommodates standard industrial and consumer battery protection applications.

ITV9550L4030MR (Littelfuse Inc.)

Direct substitute for the SCF9550-30-10 with equivalent electrical and mechanical performance. This component carries dual certifications (cURus and TUV), providing additional regulatory coverage. The POLYSWITCH® series designation indicates active product line support from Littelfuse. Operating temperature range of -10°C to 65°C extends the upper thermal limit by 5°C. Current inventory of 713 units supports secondary sourcing requirements. The triggerable voltage range of 28 ~ 46.9V remains functionally compatible with the 28 ~ 47V specification of the primary part.

Both components are ROHS3 compliant, carry MSL 1 rating, and maintain identical current, voltage, and breaking capacity specifications. Dimensional differences (9.50mm vs. 9.30mm length; 2.30mm vs. 2.00mm height) are within acceptable tolerances for nonstandard SMD board mount applications. DC cold resistance variance (0.001 Ohms vs. 0.0025 Ohms) remains within acceptable operational parameters for battery protection circuits.

Frequently Asked Questions (FAQ)

Q: Can the ITV9550L4030MR be used as a direct replacement for the SCF9550-30-10 in existing designs?

A: Yes. Both components share identical current rating (30A), voltage rating (62 VDC), response time (Fast Blow), breaking capacity (80A), and mounting type (Surface Mount). Electrical performance and board mount compatibility are equivalent. Dimensional differences are minor and within acceptable tolerances for nonstandard SMD packages.

Q: What is the significance of the triggerable voltage range difference (28 ~ 47V vs. 28 ~ 46.9V)?

A: The triggerable voltage ranges are functionally compatible. The SCF9550-30-10 operates within 28 ~ 47V, while the ITV9550L4030MR operates within 28 ~ 46.9V. Both ranges overlap completely across the critical operational window, ensuring equivalent battery protection performance in typical 28V to 46.9V DC systems.

Q: Are there any compliance or certification differences between these parts?

A: Both components are ROHS3 compliant and carry cURus approval. The ITV9550L4030MR additionally carries TUV certification, providing supplementary regulatory coverage. Both components maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: How do the physical dimensions affect PCB layout compatibility?

A: The SCF9550-30-10 measures 9.50mm L x 5.00mm W x 2.30mm H, while the ITV9550L4030MR measures 9.30mm L x 5.00mm W x 2.00mm H. The width dimension is identical. Length and height differences are minor (0.20mm and 0.30mm respectively) and are within acceptable tolerances for nonstandard SMD board mount applications. Existing PCB footprints designed for either component will accommodate the other without modification.

Q: What is the operational temperature range difference, and does it affect application suitability?

A: The SCF9550-30-10 operates from -20°C to 60°C, while the ITV9550L4030MR operates from -10°C to 65°C. The ITV9550L4030MR provides a 5°C extension at the upper temperature limit. For applications operating within -20°C to 60°C, both components are suitable. For applications requiring operation below -10°C or above 60°C, the SCF9550-30-10 is the appropriate selection.

Q: Is the DC cold resistance difference (0.001 Ohms vs. 0.0025 Ohms) significant for battery protection circuits?

A: The DC cold resistance variance is within acceptable operational parameters for battery protection applications. Both values represent minimal resistance in the conduction state and do not materially affect circuit performance or thermal characteristics in typical 30A battery protection designs.

Q: Can these parts be interchanged mid-production without design review?

A: Both components meet identical electrical specifications, carry equivalent regulatory approvals, and maintain compatible mechanical dimensions. Substitution between SCF9550-30-10 and ITV9550L4030MR does not require design modification. Standard component change procedures and documentation updates are appropriate for production transitions.