Equivalent & Substitute Parts for 0ZCD0125FF2C

Part Overview

The 0ZCD0125FF2C is a polymeric PTC resettable fuse manufactured by Bel Fuse Inc., rated for 33V maximum voltage with 1.25A hold current. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part is designed for surface mount applications in the 2920 (7351 Metric) package format and provides overcurrent protection with automatic reset capability after fault conditions are cleared.

Substiute Parts

0ZCD0125FF2C

Bel Fuse Inc.In Stock: 11590ZCD0125FF2C Datasheet

Current PartRFQ

0ZCF0125FF2C

Bel Fuse Inc.In Stock: 21920ZCF0125FF2C Datasheet

DirectRFQ

MF-SM125-2

Bourns Inc.In Stock: 5414MF-SM125-2 Datasheet

DirectRFQ

SMD125F-2

Littelfuse Inc.In Stock: 7378SMD125F-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0ZCD0125FF2C is determined by the following critical parameters:

• Voltage Rating (Max): Must be 33V or higher to maintain circuit protection integrity
• Current - Hold (Ih): Must be 1.25A or higher to ensure equivalent protection threshold
• Current - Trip (It): Must be 2.5A to match trip characteristics
• Mounting Type: Surface mount required for PCB compatibility
• Operating Temperature Range: Must support -40°C ~ 85°C minimum
• Type: Polymeric PTC resettable fuse technology

Based on these criteria, the substitute parts are grouped as follows:

Group 1 - Direct Voltage Match (33V):

• 0ZCF0125FF2C (Bel Fuse Inc.) - Same manufacturer, active product status, identical electrical specifications with enhanced current capacity

Group 2 - Reduced Voltage (15V):

• MF-SM125-2 (Bourns Inc.) - Lower voltage rating, suitable only for circuits operating at 15V or below
• SMD125F-2 (Littelfuse Inc.) - Lower voltage rating, suitable only for circuits operating at 15V or below

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 0ZCF0125FF2C

The 0ZCF0125FF2C is the recommended direct substitute for the obsolete 0ZCD0125FF2C. Both parts are manufactured by Bel Fuse Inc. and share identical electrical specifications: 33V maximum voltage, 1.25A hold current, and 2.5A trip current. The 0ZCF0125FF2C maintains active product status, ensuring long-term availability and supply chain continuity. This part includes AEC-Q200 automotive qualification in addition to cURus and TUV certifications, and is ROHS3 compliant. The package format remains 2920 (7351 Metric), with the only physical difference being a concave top surface. Current capacity is enhanced to 100A compared to the original 40A specification.

Alternative Substitutes: MF-SM125-2 and SMD125F-2

The MF-SM125-2 (Bourns Inc.) and SMD125F-2 (Littelfuse Inc.) are functional alternatives only for applications where the circuit voltage does not exceed 15V. Both parts maintain the 1.25A hold current and 2.5A trip current specifications. These alternatives use different package formats (2-SMD versus 2920 Metric), requiring PCB layout modifications. MF-SM125-2 offers superior compliance certifications including AEC-Q200 and ROHS3 compliance. SMD125F-2 provides equivalent electrical performance but with lower maximum current capacity (40A) matching the original part.

Frequently Asked Questions (FAQ)

Q: Can I use MF-SM125-2 or SMD125F-2 as direct replacements for 0ZCD0125FF2C?

A: Only if your circuit operates at 15V or below. Both alternatives have a maximum voltage rating of 15V, compared to the original 33V specification. Using a lower-rated component in a higher-voltage circuit will result in premature device failure and loss of overcurrent protection.

Q: What is the difference between 0ZCD0125FF2C and 0ZCF0125FF2C?

A: Both parts are manufactured by Bel Fuse Inc. with identical electrical specifications. The primary differences are: 0ZCF0125FF2C is active (versus obsolete), includes AEC-Q200 certification, is ROHS3 compliant, has a concave package variant, and supports higher maximum current (100A versus 40A). All critical protection parameters remain identical.

Q: Will changing from 2920 (7351 Metric) to 2-SMD package affect my circuit?

A: Yes. The 2-SMD package format used by MF-SM125-2 and SMD125F-2 has different physical dimensions and footprint requirements than the 2920 Metric package. PCB layout modifications are necessary. Additionally, the 2-SMD package has greater thickness (0.118" versus 0.035"), which may affect board assembly clearances.

Q: Are all substitute parts ROHS3 compliant?

A: The 0ZCF0125FF2C, MF-SM125-2, and SMD125F-2 are all ROHS3 compliant. The original 0ZCD0125FF2C does not specify RoHS status.

Q: Which substitute has the best certification coverage?

A: The 0ZCF0125FF2C includes AEC-Q200 automotive qualification in addition to cURus and TUV certifications, providing the broadest approval agency coverage among all options.

Q: What is the moisture sensitivity level for these parts?

A: The 0ZCD0125FF2C, 0ZCF0125FF2C, and SMD125F-2 are rated MSL 2A (4 Weeks). The MF-SM125-2 has superior moisture handling with MSL 1 (Unlimited).