SCF9550-30-03 Equivalent & Substitute Parts

Part Overview

The SCF9550-30-03 is a 30A, 62 VDC triggerable fuse designed for board mount surface mount applications in battery protection circuits. Manufactured by Eaton - Electronics Division, this component features fast blow response characteristics and operates across a temperature range of -20°C to 60°C. The part is currently active in production with 1,028 units in stock.

Substitute parts are identified to provide alternative sourcing options when the primary component is unavailable, when supply chain diversification is required, or when design flexibility permits equivalent component selection based on matching electrical and mechanical specifications.

Substiute Parts

SCF9550-30-03

Eaton - Electronics DivisionIn Stock: 1123SCF9550-30-03 Datasheet

Current PartRFQ

ITV9550L1230MR

Littelfuse Inc.In Stock: 808ITV9550L1230MR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCF9550-30-03 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Current Rating: 30A (exact match)
• Voltage Rating (DC): 62 VDC (exact match)
• Response Time: Fast Blow (exact match)
• Triggerable Range: 8.4 ~ 13.2V (exact match)
• Breaking Capacity @ Rated Voltage: 80A (exact match)

Mechanical Equivalence Requirements:

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

Compliance Requirements:

• RoHS3 Compliant (exact match)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match)

The substitute part ITV9550L1230MR meets all electrical and mechanical equivalence criteria, enabling direct functional substitution in battery protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SCF9550-30-03 and ITV9550L1230MR are active production components with current availability and full RoHS3 compliance. Selection between these parts is based on the following engineering considerations:

SCF9550-30-03 (Eaton - Electronics Division):

• Approved by cURus certification authority
• Operating temperature range: -20°C to 60°C
• DC cold resistance: 0.001 Ohms
• Dimensions: 9.50mm x 5.00mm x 2.30mm
• Current inventory: 1,028 units

ITV9550L1230MR (Littelfuse Inc.):

• Approved by cURus and TUV certification authorities
• Operating temperature range: -10°C to 65°C
• DC cold resistance: 0.0025 Ohms
• Dimensions: 9.30mm x 5.00mm x 2.00mm
• Current inventory: 729 units
• REACH Unaffected status confirmed

Both components satisfy the electrical and mechanical requirements for battery protection applications. The Littelfuse component provides additional TUV certification and a wider upper operating temperature limit. The Eaton component offers lower DC cold resistance and extended lower temperature operation. Physical dimensions differ slightly; PCB layout verification is required prior to substitution.

Frequently Asked Questions (FAQ)

Q: Can ITV9550L1230MR be used as a direct replacement for SCF9550-30-03?

A: Yes. Both components share identical electrical specifications (30A, 62 VDC, fast blow, 8.4~13.2V triggerable, 80A breaking capacity) and mechanical characteristics (surface mount, board mount, nonstandard SMD package). Both are RoHS3 compliant with MSL 1 rating. Physical dimensions differ slightly (9.50mm vs. 9.30mm length; 2.30mm vs. 2.00mm height); verify PCB layout compatibility before implementation.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact equivalence in current rating (30A), voltage rating (62 VDC), response time (fast blow), triggerable range (8.4~13.2V), breaking capacity (80A), mounting type (surface mount), fuse type (board mount), package type (nonstandard SMD), and compliance status (RoHS3, MSL 1).

Q: Are there differences in operating temperature ranges between these parts?

A: Yes. The SCF9550-30-03 operates from -20°C to 60°C, while the ITV9550L1230MR operates from -10°C to 65°C. The Littelfuse component provides a higher upper temperature limit; the Eaton component provides a lower temperature limit. Application requirements determine which range is appropriate.

Q: What is the significance of the DC cold resistance difference?

A: The SCF9550-30-03 has 0.001 Ohms DC cold resistance, while the ITV9550L1230MR has 0.0025 Ohms. Both values are within acceptable tolerance for battery protection applications. The difference reflects manufacturing process variations between manufacturers and does not affect functional equivalence for this application category.

Q: Do both parts have the same certifications?

A: Both parts carry cURus certification. The ITV9550L1230MR additionally carries TUV certification, providing supplementary approval authority validation. Both are RoHS3 compliant.

Q: What packaging format is used for both components?

A: Both components are supplied in Tape & Reel (TR) packaging, standard for surface mount board assembly processes.

Q: Are there any REACH or environmental compliance differences?

A: The ITV9550L1230MR is confirmed as REACH Unaffected. Both components are RoHS3 compliant. No environmental compliance barriers exist for substitution.