FCC16631ABTP Equivalent & Substitute Parts

Part Overview

The FCC16631ABTP is a surface mount fuse chip manufactured by Kamaya Inc., rated at 630 mA with a 36 V DC voltage rating in a 0603 (1608 Metric) package. This component is designed for fast-blow protection in electronic circuits requiring compact form factor and high reliability. The part maintains Active product status with full RoHS3 compliance and CSA/UL approval certifications. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit voltage or performance parameter variations within acceptable operating ranges.

Substiute Parts

FCC16631ABTP

Kamaya Inc.In Stock: 827FCC16631ABTP Datasheet

Current PartRFQ

SF-0603F063-2

Bourns Inc.In Stock: 783SF-0603F063-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FCC16631ABTP is determined by the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 630 mA (exact match required)
• Package / Case: 0603 (1608 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Response Time: Fast Blow (exact match required)

Allowable Variation Parameters:

• Voltage Rating - DC: Substitute must equal or exceed the main part rating (36 V minimum)
• Operating Temperature Range: Substitute must support the application's required temperature envelope
• Approval Certifications: Substitute must maintain equivalent or superior compliance status

The substitute part SF-0603F063-2 manufactured by Bourns Inc. matches all mandatory parameters. The voltage rating of 32 V DC on the substitute is lower than the main part's 36 V DC specification; therefore, this substitute is suitable only for applications where the actual circuit voltage does not exceed 32 V DC.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (FCC16631ABTP): The FCC16631ABTP is the preferred choice for applications requiring the full 36 V DC voltage rating and extended operating temperature range (-55°C to 125°C). This part carries dual certifications (CSA and UL), providing broader regulatory acceptance. Select this part when circuit voltage may approach or reach 36 V DC or when operation in extreme temperature environments is required.

Substitute Part Selection (SF-0603F063-2): The SF-0603F063-2 is suitable as a substitute when the following conditions are met: (1) the circuit maximum voltage does not exceed 32 V DC, (2) the operating temperature range requirement falls within -20°C to 105°C, and (3) UL certification alone satisfies regulatory requirements. This substitute offers lower DC cold resistance (0.173 Ohms versus 0.28 Ohms) and higher breaking capacity (50 A versus 35 A), which may provide performance advantages in specific circuit topologies.

Both parts maintain Active product status and ROHS3 compliance, ensuring continued availability and environmental regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can SF-0603F063-2 be used in place of FCC16631ABTP in all applications?

A: No. The SF-0603F063-2 has a maximum DC voltage rating of 32 V, while the FCC16631ABTP is rated for 36 V DC. The substitute is suitable only when the circuit's maximum voltage does not exceed 32 V DC. Exceeding this voltage rating may result in premature fuse failure or failure to operate as designed.

Q: Are the physical dimensions compatible between these two parts?

A: Yes. Both parts use the 0603 (1608 Metric) package with identical length (0.063" / 1.60 mm) and height (0.018" / 0.45 mm). The width differs slightly (0.031" versus 0.032"), but this variance is negligible for PCB footprint compatibility and reflow soldering processes.

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

A: The FCC16631ABTP exhibits 0.28 Ohms cold resistance, while the SF-0603F063-2 exhibits 0.173 Ohms. Lower resistance reduces voltage drop across the fuse during normal operation, which may be advantageous in low-voltage, high-current applications. However, this parameter does not affect substitution eligibility when voltage and current ratings are satisfied.

Q: Does the substitute part have the same certifications?

A: The FCC16631ABTP carries CSA and UL approvals, while the SF-0603F063-2 carries UL approval only. If CSA certification is a regulatory requirement for your application, the substitute part does not meet this requirement. Verify certification requirements with your quality assurance or regulatory compliance department.

Q: What is the impact of the different operating temperature ranges?

A: The FCC16631ABTP operates from -55°C to 125°C, while the SF-0603F063-2 operates from -20°C to 105°C. If your application requires operation below -20°C or above 105°C, the substitute part is not suitable. The main part is required for extended temperature range applications.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Physical interchangeability is possible due to identical package dimensions and mounting type. However, electrical interchangeability depends on circuit voltage and temperature requirements. Perform a design review to confirm that the substitute part's voltage and temperature ratings satisfy your specific application before implementing the substitution.