MF-MSMD110-2 Equivalent & Substitute Parts

Part Overview

The MF-MSMD110-2 is a polymeric PTC resettable fuse manufactured by Bourns Inc., rated for 6V maximum voltage with 1.1 A 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 and provides overcurrent protection with automatic reset capability after fault conditions are cleared.

Key Parameters

Parameter	Value
Voltage - Max	6V
Current - Hold (Ih) (Max)	1.1 A
Current - Trip (It)	2.2 A
Resistance - Initial (Ri) (Min)	40 mOhms
Resistance - Post Trip (R1) (Max)	210 mOhms
Operating Temperature Range	-40°C ~ 85°C
Time to Trip	300 ms
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the MF-MSMD110-2 is determined by the following critical parameters:

Voltage Rating (Max): 6V nominal, with 8V-rated alternatives acceptable for applications operating below 6V
Current - Hold (Ih): 1.1 A maximum (non-negotiable)
Current - Trip (It): 2.2 A (non-negotiable)
Resistance - Initial (Ri): 40 mOhms minimum
Resistance - Post Trip (R1): 210 mOhms maximum
Package / Case: 1812 (4532 Metric) surface mount
Operating Temperature: -40°C ~ 85°C

Substitute parts meeting these electrical and mechanical specifications are functionally equivalent for direct replacement in the same circuit application.

Parameter Comparison

Parameter	MF-MSMD110-2 (Main)	MF-MSMF110-2	0ZCG0110FF2C	PFMF.110.2	PTS18128V110
Manufacturer	Bourns Inc.	Bourns Inc.	Bel Fuse Inc.	SCHURTER Inc.	Eaton - Electronics Division
Voltage - Max	6V	6V	8V	6V	8V
Current - Hold (Ih) (Max)	1.1 A	1.1 A	1.1 A	1.1 A	1.1 A
Current - Trip (It)	2.2 A	2.2 A	2.2 A	2.2 A	2.2 A
Resistance - Initial (Ri) (Min)	40 mOhms	40 mOhms	40 mOhms	40 mOhms	40 mOhms
Resistance - Post Trip (R1) (Max)	210 mOhms	210 mOhms	210 mOhms	210 mOhms	210 mOhms
Time to Trip	300 ms	300 ms	300 ms	300 ms	300 ms
Operating Temperature	-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)	1812 (4532 Metric), Concave	1812 (4532 Metric), Concave	1812 (4532 Metric), Concave	1812 (4532 Metric), Concave
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	2A (4 Weeks)	Not Applicable	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts meet the core electrical specifications (voltage, current, resistance, and thermal characteristics) required for functional equivalence to the MF-MSMD110-2.

MF-MSMF110-2 (Bourns Inc.): Direct manufacturer alternative with identical voltage rating (6V), active product status, and ROHS3 compliance. Recommended for applications requiring same-manufacturer continuity and RoHS compliance.

0ZCG0110FF2C (Bel Fuse Inc.): 8V-rated alternative suitable for applications operating at or below 6V. Active product status with AEC-Q200 rating and ROHS3 compliance. MSL rating of 2A requires 4-week storage management.

PFMF.110.2 (SCHURTER Inc.): 6V-rated alternative with active product status and ROHS3 compliance. Suitable for direct replacement in applications matching the original voltage specification.

PTS18128V110 (Eaton - Electronics Division): 8V-rated alternative with active product status and ROHS3 compliance. Appropriate for applications operating below 6V nominal voltage.

All substitute parts are classified as active products, ensuring long-term availability and supply chain stability compared to the obsolete MF-MSMD110-2.

Frequently Asked Questions (FAQ)

Q: Can I use an 8V-rated PTC fuse (0ZCG0110FF2C or PTS18128V110) as a substitute for the 6V MF-MSMD110-2?

A: Yes, provided your circuit operates at or below 6V. The 8V rating indicates maximum voltage withstand capability; operation at lower voltages is within specification. All other electrical parameters (current, resistance, thermal response) are identical.

Q: What is the difference between the standard 1812 package and the concave variant?

A: The concave package variant affects physical dimensions and mounting surface profile. Both are 1812 (4532 Metric) form factors suitable for the same PCB footprint. Verify your assembly equipment and solder reflow profile compatibility with the specific package variant.

Q: Why is the MF-MSMD110-2 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active alternatives from Bourns (MF-MSMF110-2) and other manufacturers provide equivalent functionality with ongoing supply availability.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts are ROHS3 compliant. The original MF-MSMD110-2 is RoHS non-compliant. Compliance requirements for your application determine whether substitution is mandatory.

Q: What does MSL 2A (4 Weeks) mean for the 0ZCG0110FF2C?

A: Moisture Sensitivity Level 2A requires the component to be stored in controlled humidity conditions and used within 4 weeks of package opening. Implement appropriate moisture management procedures during storage and assembly.

Q: Can I mix substitute parts from different manufacturers in the same production run?

A: All listed parts meet identical electrical specifications and are mechanically compatible. Mixing manufacturers is acceptable from a functional standpoint; however, establish consistent sourcing practices for traceability and supply chain management.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message