ASO241 Solid State Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The ASO241 is a Solid State Relay (SSR) manufactured by Sensata-Crydom, configured as SPST-NO (1 Form A) in a 4-SIP package. This through-hole mounted component operates with input voltage of 4–10VDC and supports AC loads from 12V to 280V at 1.5A with zero-cross switching. The part is Active status and ROHS3 compliant. Substitute parts are identified to provide alternative sourcing options when the ASO241 becomes unavailable or when design requirements necessitate different electrical specifications within compatible parameters.

Substiute Parts

ASO241

Sensata-CrydomIn Stock: 1255ASO241 Datasheet

Current PartRFQ

AQG22105

Panasonic Electric WorksIn Stock: 2948AQG22105 Datasheet

MFR RecommendedRFQ

AQG22112

Panasonic Electric WorksIn Stock: 2331AQG22112 Datasheet

MFR RecommendedRFQ

ASR-SC240D2ZP-F

Altran Magnetics, LLCIn Stock: 877ASR-SC240D2ZP-F Datasheet

MFR RecommendedRFQ

AQG22105

Panasonic Electric WorksIn Stock: 2948AQG22105 Datasheet

MFR RecommendedRFQ

AQG22112

Panasonic Electric WorksIn Stock: 2331AQG22112 Datasheet

MFR RecommendedRFQ

ASR-SC240D2ZP-F

Altran Magnetics, LLCIn Stock: 877ASR-SC240D2ZP-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ASO241 are qualified based on the following criteria:

• Circuit configuration must be SPST-NO (1 Form A)
• Output type must be AC with zero-cross switching
• Package must be 4-SIP with through-hole PC pin termination
• Load voltage range must encompass or overlap the ASO241 range (12V–280V)
• Load current must be equal to or greater than 1.5A
• Input voltage must be compatible with system design requirements
• Product status must be Active
• RoHS3 compliance is required

The identified substitutes meet these criteria with variations in input voltage ranges and load current ratings that provide functional equivalence or enhanced capability.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory and supply chain continuity.

AQG22105 and AQG22112 are both Panasonic Electric Works AQ-G series relays with 2A load current capability. AQG22105 operates with 4–6VDC input and is packaged in Tube format. AQG22112 operates with 9.6–14.4VDC input and is packaged in Bulk format. Both support load voltage from 75V to 264V. Selection between these two depends on input voltage availability in the target application.

ASR-SC240D2ZP-F is an Altran Magnetics SC series relay with fixed 12VDC input and 2A load current. It supports load voltage from 24V to 280V, providing the widest load voltage range overlap with the ASO241. This part is packaged in Box format.

All substitutes provide equal or enhanced load current (2A versus 1.5A), ensuring capability to handle the ASO241 design envelope. Input voltage compatibility must be verified against system supply specifications.

Frequently Asked Questions (FAQ)

Q: Can AQG22105 directly replace ASO241 in all applications?

A: AQG22105 is functionally equivalent in circuit configuration, output type, and package. However, its input voltage range (4–6VDC) is narrower than ASO241 (4–10VDC). Substitution is valid only if the system input voltage remains within 4–6VDC. Its load voltage range (75V–264V) does not extend to 12V, so applications requiring loads below 75V are not compatible.

Q: What is the difference between AQG22105 and AQG22112?

A: Both are Panasonic AQ-G series SPST-NO relays with identical circuit configuration and 2A load current. The primary difference is input voltage: AQG22105 operates at 4–6VDC, while AQG22112 operates at 9.6–14.4VDC. Load voltage range is identical (75V–264V) for both. Selection depends on available input voltage in the application.

Q: Is ASR-SC240D2ZP-F suitable for low-voltage loads below 24V?

A: No. ASR-SC240D2ZP-F has a minimum load voltage of 24V. Applications requiring loads at 12V–23V are not compatible with this substitute. The ASO241 supports loads from 12V, making it necessary to retain the original part or select AQG22105/AQG22112 if input voltage permits.

Q: Do all substitutes maintain the same physical footprint?

A: All substitutes use 4-SIP package with through-hole PC pin termination, ensuring identical PCB footprint and mounting compatibility with ASO241.

Q: Are there compliance differences between substitutes?

A: All substitutes are ROHS3 compliant. AQG22105 and AQG22112 have MSL rating of 1 (Unlimited). ASR-SC240D2ZP-F has MSL listed as Not Applicable. All are classified under ECCN EAR99. REACH status varies: AQG22105 is REACH Unaffected, AQG22112 is Vendor Undefined, and ASR-SC240D2ZP-F is REACH Unaffected.