MINISMDC075-2 Equivalent & Substitute Parts

Part Overview

The MINISMDC075-2 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc., rated for 13.2V maximum voltage with 750 mA hold current. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is housed in a 1812 (4532 Metric) surface mount package with concave geometry, suitable for automated assembly processes.

Key Parameters

Parameter	Value
Voltage - Max	13.2V
Current - Hold (Ih) (Max)	750 mA
Current - Trip (It)	1.5 A
Current - Max	100 A
Time to Trip	200 ms
Resistance - Initial (Ri) (Min)	110 mOhms
Resistance - Post Trip (R1) (Max)	450 mOhms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	1812 (4532 Metric), Concave
Size / Dimension	0.179" L x 0.128" W (4.55mm x 3.24mm)
Approval Agency	CSA, TUV, UL

Substitute Part Grouping Explanation

Substitute parts for the MINISMDC075-2 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Max: 13.2V (or higher)
Current - Hold (Ih) (Max): 750 mA
Current - Trip (It): 1.5 A
Resistance - Initial (Ri) (Min): 110 mOhms
Resistance - Post Trip (R1) (Max): 450 mOhms
Operating Temperature: -40°C ~ 85°C
Package / Case: 1812 (4532 Metric), Concave
Mounting Type: Surface Mount

Substitution Categories:

Parametric Equivalent: MINISMDC075F-2 (Littelfuse Inc.) — Identical electrical specifications with active product status and RoHS3 compliance.

Direct Manufacturer Alternatives: MF-MSMF075-2 (Bourns Inc.) — Matches all critical electrical parameters with AEC-Q200 rating and improved moisture sensitivity level.

Voltage-Rated Alternative: MF-MSMF075/24-2 (Bourns Inc.) — Rated for 24V maximum voltage; suitable only where circuit voltage does not exceed 13.2V and higher voltage margin is acceptable.

Manufacturer Recommended Alternatives: PFMF.075.2 (SCHURTER Inc.) and PTS181213V075 (Eaton - Electronics Division) — Both meet all electrical specifications with active status and RoHS3 compliance.

Parameter Comparison

Parameter	MINISMDC075-2	MINISMDC075F-2	MF-MSMF075-2	MF-MSMF075/24-2	PFMF.075.2	PTS181213V075
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Bourns Inc.	Bourns Inc.	SCHURTER Inc.	Eaton - Electronics Division
Voltage - Max	13.2V	13.2V	13.2V	24V	13.2V	13.2V
Current - Hold (Ih) (Max)	750 mA	750 mA	750 mA	750 mA	750 mA	750 mA
Current - Trip (It)	1.5 A	1.5 A	1.5 A	1.5 A	1.5 A	1.5 A
Current - Max	100 A	100 A	100 A	40 A	100 A	100 A
Time to Trip	200 ms	200 ms	200 ms	200 ms	200 ms	200 ms
Resistance - Initial (Ri) (Min)	110 mOhms	110 mOhms	110 mOhms	110 mOhms	110 mOhms	110 mOhms
Resistance - Post Trip (R1) (Max)	450 mOhms	450 mOhms	450 mOhms	450 mOhms	450 mOhms	450 mOhms
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	1812 (4532 Metric), Concave	1812 (4532 Metric), Concave	1812 (4532 Metric), Concave	1812 (4532 Metric), Concave	1812 (4532 Metric), Concave	1812 (4532 Metric), Concave
Thickness (Max)	0.024" (0.62mm)	0.024" (0.62mm)	0.033" (0.85mm)	0.033" (0.85mm)	0.033" (0.85mm)	0.027" (0.68mm)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	CSA, TUV, UL	CSA, TUV, UL	cURus, TUV	cURus, TUV	cURus, TUV	cURus, TUV

Engineering Selection Recommendations

Primary Recommendation: MINISMDC075F-2 (Littelfuse Inc.)

This part is the direct parametric equivalent with identical electrical specifications and mechanical dimensions. It maintains the same manufacturer lineage as the obsolete MINISMDC075-2, ensuring design continuity. The part is in active production status with RoHS3 compliance and carries the same regulatory approvals (CSA, TUV, UL).

Secondary Recommendations: MF-MSMF075-2 (Bourns Inc.) or PTS181213V075 (Eaton - Electronics Division)

Both parts meet all critical electrical and mechanical parameters with active product status and RoHS3 compliance. MF-MSMF075-2 includes AEC-Q200 automotive qualification. PTS181213V075 offers improved moisture sensitivity level (1 vs. 2A). Both are suitable for direct substitution in applications where circuit voltage remains at or below 13.2V.

Alternative Consideration: PFMF.075.2 (SCHURTER Inc.)

This part meets all electrical specifications and is in active production with RoHS3 compliance. Thickness tolerance differs slightly (0.033" vs. 0.024"), which may require PCB layout verification for space-constrained applications.

Not Recommended for Direct Substitution: MF-MSMF075/24-2 (Bourns Inc.)

While this part shares identical hold current, trip current, and resistance specifications, its 24V maximum voltage rating and reduced maximum current (40A vs. 100A) make it unsuitable as a direct replacement for the MINISMDC075-2 in circuits designed for 13.2V operation.

Frequently Asked Questions (FAQ)

Q: Can MINISMDC075F-2 be used as a direct replacement for MINISMDC075-2?

A: Yes. MINISMDC075F-2 is a parametric equivalent with identical electrical specifications, operating temperature range, and package geometry. The primary difference is product status (active vs. obsolete) and RoHS3 compliance.

Q: What is the difference between the Littelfuse and Bourns alternatives?

A: MINISMDC075F-2 (Littelfuse) maintains manufacturer continuity with the obsolete part. MF-MSMF075-2 (Bourns) offers equivalent electrical performance with AEC-Q200 automotive qualification and improved moisture sensitivity level (1 vs. 2A). Both are electrically interchangeable.

Q: Why is MF-MSMF075/24-2 listed as a substitute if it has different voltage and current ratings?

A: MF-MSMF075/24-2 is included in the substitute list due to matching hold current and trip current specifications. However, its 24V maximum voltage and 40A maximum current make it unsuitable for direct replacement in circuits designed for the MINISMDC075-2. Use only if circuit voltage does not exceed 13.2V and maximum current requirements do not exceed 40A.

Q: Are there thickness differences between substitute parts?

A: Yes. MINISMDC075-2 and MINISMDC075F-2 have a maximum thickness of 0.024" (0.62mm). MF-MSMF075-2, MF-MSMF075/24-2, and PFMF.075.2 have a maximum thickness of 0.033" (0.85mm). PTS181213V075 has a maximum thickness of 0.027" (0.68mm). Verify PCB layout clearance for space-constrained applications.

Q: Do all substitute parts have the same regulatory approvals?

A: No. MINISMDC075-2 and MINISMDC075F-2 carry CSA, TUV, and UL approvals. MF-MSMF075-2, MF-MSMF075/24-2, PFMF.075.2, and PTS181213V075 carry cURus and TUV approvals. Verify that substitute part certifications meet your application requirements.

Q: What is the moisture sensitivity level difference between parts?

A: MINISMDC075-2 and MINISMDC075F-2 are rated 2A (4 Weeks). MF-MSMF075-2 and PTS181213V075 are rated 1 (Unlimited). PFMF.075.2 is Not Applicable. Lower MSL ratings indicate less stringent moisture handling requirements during storage and assembly.

Q: Are all substitute parts RoHS3 compliant?

A: MINISMDC075-2 is RoHS non-compliant. All substitute parts (MINISMDC075F-2, MF-MSMF075-2, MF-MSMF075/24-2, PFMF.075.2, and PTS181213V075) are RoHS3 compliant.

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