FCC32252ADTP Equivalent & Substitute Parts

Part Overview

The FCC32252ADTP is a surface mount fuse chip manufactured by Kamaya Inc., rated for 2.5 A at 64 V DC with fast blow response characteristics. This component is designed for circuit protection in applications requiring reliable overcurrent interruption in compact form factors. The part maintains active product status with 1153 units in current inventory stock.

Substitute parts are identified to address supply chain continuity, inventory availability, or specific application requirements where electrical and mechanical parameters align within acceptable tolerances for the intended circuit protection function.

Substiute Parts

FCC32252ADTP

Kamaya Inc.In Stock: 1236FCC32252ADTP Datasheet

Current PartRFQ

SF-1206S250-2

Bourns Inc.In Stock: 13153SF-1206S250-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FCC32252ADTP are identified based on the following critical parameters that must align for functional equivalency:

Matching Parameters (Required for Substitution):

• Current Rating: 2.5 A (exact match)
• Package / Case: 1206 (3216 Metric) (exact match)
• Mounting Type: Surface Mount (exact match)
• Breaking Capacity @ Rated Voltage: 50 A (exact match)

Parameters with Acceptable Variance:

• Voltage Rating - DC: The main part operates at 64 V DC. Substitute parts operating at lower voltage ratings (such as 32 V DC) are suitable for applications where the circuit voltage does not exceed the substitute part's rating. The substitute must not be used in circuits exceeding its voltage specification.
• Response Time: The main part features fast blow response. Substitutes with different response characteristics (such as slow blow) are suitable only for applications where the response time requirement permits such variation.
• Operating Temperature Range: The main part operates from -55°C to 125°C. Substitutes with narrower temperature ranges are suitable for applications operating within the substitute's specified range.

Compliance Parameters:

• RoHS3 Compliant status maintained across all substitutes
• Regulatory certifications (UL, cUL, CSA) present on both main and substitute parts

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (FCC32252ADTP): The FCC32252ADTP is the specified component for applications requiring 2.5 A protection at 64 V DC with fast blow response. This part carries CSA, cUL, and UL certifications, providing the broadest regulatory approval coverage. The operating temperature range of -55°C to 125°C accommodates extended environmental conditions. This part is recommended for new designs and applications where the full voltage rating and extended temperature range are required.

Substitute Part Selection (SF-1206S250-2): The SF-1206S250-2 from Bourns Inc. is suitable as a substitute under the following conditions:

1. Circuit voltage does not exceed 32 V DC
2. Application requirements permit slow blow response characteristics instead of fast blow
3. Operating temperature remains within -20°C to 105°C
4. UL certification meets the application's regulatory requirements

The SF-1206S250-2 maintains identical current rating (2.5 A), package form factor (1206), mounting type (surface mount), and breaking capacity (50 A). This substitute is appropriate for supply chain alternatives or inventory management in applications meeting the above conditions.

Compliance Consideration: Both parts maintain ROHS3 compliance and carry UL certification. Applications requiring CSA or cUL certification must use the primary FCC32252ADTP part, as the substitute carries only UL approval.

Frequently Asked Questions (FAQ)

Q: Can the SF-1206S250-2 be used as a direct replacement for the FCC32252ADTP in all applications?

A: No. The SF-1206S250-2 has a lower voltage rating (32 V DC versus 64 V DC) and different response time characteristics (slow blow versus fast blow). The substitute is suitable only for applications where the circuit voltage does not exceed 32 V DC and where slow blow response is acceptable.

Q: What is the significance of the response time difference between fast blow and slow blow?

A: Response time determines how quickly the fuse interrupts current when an overcurrent condition occurs. Fast blow fuses respond rapidly to overcurrent, providing protection against sudden surges. Slow blow fuses tolerate temporary current spikes and respond more gradually, suitable for circuits with inrush currents. Application requirements determine which response type is appropriate.

Q: Are both parts physically compatible with the same PCB footprint?

A: Both parts use the 1206 (3216 Metric) package and surface mount technology. Physical dimensions are similar (FCC32252ADTP: 3.20mm x 1.60mm x 0.60mm; SF-1206S250-2: 3.10mm x 1.55mm x 0.60mm), making them compatible with the same PCB footprint. However, electrical parameters must still be verified for circuit compatibility.

Q: What certifications does each part carry?

A: The FCC32252ADTP carries CSA, cUL, and UL certifications. The SF-1206S250-2 carries UL certification. Applications requiring CSA or cUL approval must use the FCC32252ADTP.

Q: How do the DC cold resistance values affect circuit performance?

A: DC cold resistance affects voltage drop across the fuse during normal operation. The FCC32252ADTP has 0.045 Ohms resistance, while the SF-1206S250-2 has 0.026 Ohms. Lower resistance results in less voltage drop. For circuits sensitive to voltage drop, the substitute's lower resistance may be advantageous; however, this difference is typically negligible in most applications.

Q: Can the SF-1206S250-2 be used in applications operating below -20°C or above 105°C?

A: No. The SF-1206S250-2 is rated for -20°C to 105°C operation. Applications requiring operation outside this range must use the FCC32252ADTP, which is rated for -55°C to 125°C.

Q: What does the 50 A breaking capacity specification mean?

A: Breaking capacity indicates the maximum current the fuse can safely interrupt at its rated voltage without damage or hazard. Both parts have identical 50 A breaking capacity at their respective rated voltages, ensuring equivalent protection performance within their voltage specifications.