MP120D2 Equivalent & Substitute Parts

Part Overview

The MP120D2 is a solid state relay (SSR) manufactured by Sensata-Crydom, configured as a SPST-NO (1 Form A) device in a 4-SIP package. This component operates with input voltage of 3–32VDC, load voltage of 12–140V AC, and a rated load current of 2A with zero-cross switching capability. The MP120D2 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and new design implementations.

Substiute Parts

MP120D2

Sensata-CrydomIn Stock: 741MP120D2 Datasheet

Current PartRFQ

MP120D3

Sensata-CrydomIn Stock: 928MP120D3 Datasheet

DirectRFQ

MP120D4

Sensata-CrydomIn Stock: 763MP120D4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MP120D2 is determined by strict equivalence across the following parameters:

• Circuit Configuration: Must remain SPST-NO (1 Form A)
• Output Type: Must maintain AC, Zero Cross switching
• Input Voltage Range: Must support 3–32VDC
• Load Voltage Range: Must support 12–140V
• Package / Case: Must be 4-SIP
• Mounting Type: Must be Through Hole
• Termination Style: Must be PC Pin

The MP120D2 specifies a 2A load current rating. Substitute parts within the Sensata-Crydom MP series that maintain all other parameters while offering equal or higher current ratings are considered direct substitutes. Parts with higher current ratings (3A, 4A) are functionally compatible in applications requiring the original 2A specification, as they provide equivalent or superior performance within the same electrical and mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

The MP120D2 is obsolete and no longer in active production. Both MP120D3 and MP120D4 are active products from the same manufacturer and series, maintaining identical electrical and mechanical specifications with the exception of load current rating.

MP120D3 (3A rating) is the direct functional equivalent for applications requiring the original 2A specification. This part is ROHS3 compliant and currently in production.

MP120D4 (4A rating) provides additional current capacity within the same package and electrical envelope. This part is also ROHS3 compliant and currently in production.

Both substitute parts are suitable for direct replacement in existing designs. Selection between MP120D3 and MP120D4 depends on application current requirements and thermal management considerations within the target system.

Frequently Asked Questions (FAQ)

Q: Can MP120D3 or MP120D4 be used as direct replacements for MP120D2?

A: Yes. Both parts maintain identical circuit configuration (SPST-NO), output type (AC, Zero Cross), input voltage range (3–32VDC), load voltage range (12–140V), package (4-SIP), mounting type (Through Hole), and termination style (PC Pin). The higher current ratings (3A and 4A respectively) are compatible with applications originally specified for 2A operation.

Q: What is the difference between MP120D3 and MP120D4?

A: The primary difference is load current rating: MP120D3 is rated for 3A, while MP120D4 is rated for 4A. All other electrical and mechanical parameters are identical. Selection depends on the maximum current required by the application.

Q: Are there any compliance differences between MP120D2 and the substitute parts?

A: MP120D3 and MP120D4 are both ROHS3 compliant, whereas the obsolete MP120D2 does not specify RoHS compliance status. Both substitute parts meet current regulatory requirements for electronic component manufacturing.

Q: Will the 4-SIP package dimensions remain the same across all three parts?

A: Yes. All three parts use the 4-SIP package with PC Pin termination and Through Hole mounting, ensuring mechanical compatibility with existing PCB layouts and socket configurations.

Q: What inventory status should be considered when selecting a substitute?

A: MP120D3 has 873 units in stock, and MP120D4 has 698 units in stock. Both are available as new original components. The obsolete MP120D2 should not be sourced for new applications.