MP120D3 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The MP120D3 is an active Sensata-Crydom solid state relay (SSR) featuring SPST-NO (1 Form A) switching configuration in a 4-SIP package. This through-hole mounted component operates with 3–32VDC input and handles AC loads from 12–140V at 3A with zero-cross switching. The part is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when inventory constraints, packaging requirements, or specific voltage/current specifications necessitate alternative component selection while maintaining circuit functionality.

Substiute Parts

MP120D3

Sensata-CrydomIn Stock: 928MP120D3 Datasheet

Current PartRFQ

GA8-6B02

Sensata-CrydomIn Stock: 2086GA8-6B02 Datasheet

DirectRFQ

ASR-SD240D3ZL

Altran Magnetics, LLCIn Stock: 910ASR-SD240D3ZL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters:

• Circuit configuration: SPST-NO (1 Form A) only
• Output type: AC with zero-cross switching
• Package: 4-SIP through-hole with PC pin termination
• Input voltage range: Must accommodate 3–32VDC control signal
• Load voltage range: Must span or exceed 12–140V
• Load current: Minimum 3A rating
• Compliance: ROHS3 and REACH Unaffected status

Two substitute parts meet these criteria with documented compatibility:

GA8-6B02 (Sensata-Crydom, Direct Substitute): Identical circuit, output type, and package. Input range 3–28VDC and load range 24–280V exceed MP120D3 specifications. Load current 4.6A exceeds minimum requirement.

ASR-SD240D3ZL (Altran Magnetics, LLC, Similar Substitute): Identical circuit, output type, and package. Input range 4–15VDC is narrower than MP120D3 but covers standard control voltages. Load range 24–280V and 3A current match core requirements.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and full compliance with ROHS3 and REACH requirements, ensuring regulatory alignment for current and future applications.

GA8-6B02 provides the broadest operational envelope with input range extending to 28VDC and load voltage capability to 280V. The 4.6A current rating offers additional margin above the 3A minimum. This part is suitable for applications requiring extended load voltage range or higher current headroom.

ASR-SD240D3ZL operates within a narrower input voltage window (4–15VDC) compared to MP120D3 (3–32VDC). Selection of this part requires verification that control signal voltage remains within the 4–15VDC band. Load voltage and current specifications are equivalent to MP120D3. This part is suitable for applications with fixed, mid-range control voltages.

Frequently Asked Questions (FAQ)

Q: Can GA8-6B02 replace MP120D3 in any application? GA8-6B02 shares identical circuit configuration, output type, and package. The extended input range (3–28VDC vs. 3–32VDC) and higher load current (4.6A vs. 3A) make it suitable for most MP120D3 applications. The higher load voltage capability (24–280V vs. 12–140V) does not restrict compatibility.

Q: What is the primary limitation of ASR-SD240D3ZL as a substitute? ASR-SD240D3ZL has a narrower input voltage range (4–15VDC) compared to MP120D3 (3–32VDC). Applications using control signals below 4VDC or above 15VDC cannot use this part. Verify control voltage specifications before selection.

Q: Are all three parts pin-compatible? All three parts use 4-SIP through-hole packages with PC pin termination. Physical and electrical pin compatibility is maintained across MP120D3, GA8-6B02, and ASR-SD240D3ZL.

Q: Do packaging differences affect substitution? MP120D3 is supplied in Bulk packaging. GA8-6B02 is supplied in Bulk packaging. ASR-SD240D3ZL is supplied in Box packaging. Packaging format does not affect electrical or mechanical compatibility; it reflects supplier distribution method only.

Q: Which part offers the best current margin? GA8-6B02 provides 4.6A rating, exceeding the 3A minimum by 0.5A. MP120D3 and ASR-SD240D3ZL both provide exactly 3A. For applications requiring current headroom, GA8-6B02 is preferred.

Q: Are all parts compliant with environmental and regulatory standards? All three parts are ROHS3 compliant and REACH Unaffected. MSL ratings are 1 (Unlimited) for MP120D3 and GA8-6B02, and Not Applicable for ASR-SD240D3ZL. All parts meet current regulatory requirements for industrial and commercial applications.