FEMTOSMDC016F-02 Equivalent & Substitute Parts

Part Overview

The FEMTOSMDC016F-02 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. in the PolySwitch® femtoSMD series. This surface mount component is designed for overcurrent protection in 9V circuits with a 160 mA hold current rating. The part is active in production with full RoHS3 compliance and CSA/UL approval certifications. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical specifications.

Substiute Parts

FEMTOSMDC016F-02

Littelfuse Inc.In Stock: 4453FEMTOSMDC016F-02 Datasheet

Current PartRFQ

FEMTOSMDC016F-2

Littelfuse Inc.In Stock: 1891FEMTOSMDC016F-2 Datasheet

DirectRFQ

0ZCM0016FF2G

Bel Fuse Inc.In Stock: 409450ZCM0016FF2G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FEMTOSMDC016F-02 are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitutability:

Electrical Parameters (Must Match):

• Voltage - Max: 9V
• Current - Hold (Ih) (Max): 160 mA
• Current - Trip (It): 400 mA
• Current - Max: 40 A
• Time to Trip: 100 ms
• Resistance - Initial (Ri) (Min): 1 Ohms
• Resistance - Post Trip (R1) (Max): 4.2 Ohms

Mechanical Parameters (Must Match):

• Package / Case: 0603 (1608 Metric), Concave
• Mounting Type: Surface Mount
• Thickness (Max): 0.030" (0.75mm)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Approval Agencies: CSA, UL or equivalent certifications

All identified substitute parts meet these criteria and are suitable for direct replacement in applications designed for the FEMTOSMDC016F-02.

Parameter Comparison

Engineering Selection Recommendations

All three parts—FEMTOSMDC016F-02, FEMTOSMDC016F-2, and 0ZCM0016FF2G—are active production components with full RoHS3 compliance and recognized safety certifications. Selection between these parts should be based on the following factors:

Littelfuse FEMTOSMDC016F-02 and FEMTOSMDC016F-2: Both parts are from the same manufacturer and series with identical electrical specifications. The primary difference is packaging format. FEMTOSMDC016F-02 is available in standard packaging, while FEMTOSMDC016F-2 is supplied in Cut Tape and Digi-Reel formats. Both carry CSA and UL approvals with MSL rating of 1 (Unlimited).

Bel Fuse 0ZCM0016FF2G: This part meets all electrical and mechanical requirements with equivalent performance. It carries cURus and TUV certifications and is supplied in Tape & Reel format. The MSL rating is 2A (4 Weeks), which requires controlled storage conditions. This part offers the highest current inventory availability.

Selection should prioritize supply chain requirements, packaging preferences, and storage capability. All three parts are electrically and mechanically interchangeable for the specified application.

Frequently Asked Questions (FAQ)

Q: Can FEMTOSMDC016F-2 be used as a direct replacement for FEMTOSMDC016F-02?

A: Yes. Both parts are manufactured by Littelfuse Inc. with identical electrical specifications, operating temperature range, and mechanical dimensions. The difference is packaging format only. FEMTOSMDC016F-2 is supplied in Cut Tape and Digi-Reel formats, while FEMTOSMDC016F-02 uses standard packaging.

Q: Is the Bel Fuse 0ZCM0016FF2G electrically equivalent to the Littelfuse FEMTOSMDC016F-02?

A: Yes. The 0ZCM0016FF2G meets all electrical parameters: 9V maximum voltage, 160 mA hold current, 400 mA trip current, 100 ms trip time, and identical resistance specifications. Mechanical dimensions and package type are also compatible. The part carries cURus and TUV certifications.

Q: What is the difference in moisture sensitivity between these parts?

A: FEMTOSMDC016F-02 and FEMTOSMDC016F-2 have MSL rating 1 (Unlimited), meaning no moisture sensitivity restrictions. The 0ZCM0016FF2G has MSL rating 2A (4 Weeks), requiring storage in controlled humidity conditions and baking before reflow if exposed to ambient conditions for extended periods.

Q: Are the physical dimensions identical across all three parts?

A: The package type and thickness are identical (0603 Concave, 0.030" max thickness). Length and width dimensions are nominally the same (1.60mm length). The 0ZCM0016FF2G width is specified as 0.029" (0.73mm) compared to 0.032" (0.80mm) for the Littelfuse parts, which falls within standard 0603 package tolerances.

Q: Which part should be selected for highest inventory availability?

A: The Bel Fuse 0ZCM0016FF2G offers the highest current inventory at 40,863 pieces. FEMTOSMDC016F-02 has 4,400 pieces in stock, and FEMTOSMDC016F-2 has 1,810 pieces available.

Q: Do all parts have the same approval certifications?

A: No. FEMTOSMDC016F-02 and FEMTOSMDC016F-2 carry CSA and UL approvals. The 0ZCM0016FF2G carries cURus and TUV certifications. Both certification sets are recognized for overcurrent protection applications.