MINISMDC050F-02 Equivalent & Substitute Parts

Part Overview

The MINISMDC050F-02 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. in the PolySwitch® miniSMD series. This surface mount component operates at 24V with a 500 mA hold current and provides automatic circuit protection through thermal response characteristics. The part is active in production and widely used in electronic circuits requiring overcurrent protection with automatic recovery capability.

Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and packaging standards that ensure functional equivalence in circuit applications.

Substiute Parts

MINISMDC050F-02

Littelfuse Inc.In Stock: 16124MINISMDC050F-02 Datasheet

Current PartRFQ

MINIASMDC050F-2

Littelfuse Inc.In Stock: 6302MINIASMDC050F-2 Datasheet

Parametric EquivalentRFQ

MINISMDC050F-2

LittelfuseIn Stock: 805277MINISMDC050F-2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MINISMDC050F-02 are qualified based on the following criteria:

Electrical Parameters (Critical for Substitution):

• Voltage rating: 24V maximum
• Hold current (Ih): 500 mA maximum
• Trip current (It): 1 A
• Time to trip: 150 ms
• Initial resistance (Ri): 150 mOhms minimum
• Post-trip resistance (R1): 1 Ohms maximum
• Operating temperature range: -40°C to 85°C

Mechanical Parameters (Critical for Substitution):

• Package type: 1812 (4532 Metric), Concave
• Physical dimensions: 0.179" L x 0.128" W (4.55mm x 3.24mm)
• Thickness: 0.024" (0.62mm) maximum
• Mounting type: Surface Mount

Compliance Parameters:

• RoHS3 compliance
• Moisture sensitivity level: 2A (4 Weeks)

All identified substitute parts match these parameters exactly, ensuring direct functional and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three parts—MINISMDC050F-02, MINIASMDC050F-2, and MINISMDC050F-2—are active products from Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

Approval Agency Certifications:

• MINISMDC050F-02 and MINISMDC050F-2 carry CSA, TUV, and UL approvals
• MINIASMDC050F-2 does not list approval agency certifications but includes AEC-Q200 automotive qualification

Packaging Availability:

• MINISMDC050F-02: Standard packaging (inventory: 16,108 pcs)
• MINIASMDC050F-2: Tape & Reel packaging (inventory: 6,233 pcs)
• MINISMDC050F-2: Tape & Reel packaging (inventory: 805,200 pcs)

Compliance Status:

• MINIASMDC050F-2 and MINISMDC050F-2 include REACH Unaffected status documentation
• All parts are ROHS3 compliant

For applications requiring specific approval certifications, MINISMDC050F-02 or MINISMDC050F-2 are appropriate. For automotive applications with AEC-Q200 requirements, MINIASMDC050F-2 is qualified. For high-volume procurement with Tape & Reel packaging, MINISMDC050F-2 offers the largest available inventory.

Frequently Asked Questions (FAQ)

Q: Can MINIASMDC050F-2 be used as a direct replacement for MINISMDC050F-02?

A: Yes. Both parts share identical electrical parameters (24V, 500 mA hold current, 1 A trip current, 150 ms trip time), mechanical dimensions (1812 package, 4.55mm x 3.24mm), and thermal characteristics (-40°C to 85°C). The primary difference is packaging format and approval certifications. MINIASMDC050F-2 includes AEC-Q200 automotive qualification, while MINISMDC050F-02 carries CSA, TUV, and UL approvals.

Q: What is the difference between MINISMDC050F-02 and MINISMDC050F-2?

A: These parts are electrically and mechanically identical. The primary difference is packaging: MINISMDC050F-02 is supplied in standard packaging, while MINISMDC050F-2 is supplied in Tape & Reel format. Both carry CSA, TUV, and UL certifications. MINISMDC050F-2 has significantly higher inventory availability.

Q: Are all three parts RoHS3 compliant?

A: Yes. MINISMDC050F-02, MINIASMDC050F-2, and MINISMDC050F-2 are all ROHS3 compliant. MINIASMDC050F-2 and MINISMDC050F-2 additionally document REACH Unaffected status.

Q: What is the moisture sensitivity level, and does it affect storage?

A: All three parts have a Moisture Sensitivity Level (MSL) of 2A with a 4-week floor life. This means components must be stored in controlled humidity conditions and used within 4 weeks of opening the original packaging. Proper moisture barrier packaging and desiccant storage are required.

Q: Can these parts be used in automotive applications?

A: MINIASMDC050F-2 is qualified to AEC-Q200 automotive standards. MINISMDC050F-02 and MINISMDC050F-2 do not list AEC-Q200 qualification but carry industrial certifications (CSA, TUV, UL). Application suitability depends on specific automotive qualification requirements.

Q: What is the difference between hold current (Ih) and trip current (It)?

A: Hold current (Ih) of 500 mA is the maximum continuous current the fuse can carry without tripping. Trip current (It) of 1 A is the threshold at which the fuse activates thermal protection. Currents between 500 mA and 1 A may cause tripping depending on duration and thermal conditions.