LC241R Solid State Relay SPST-NO 1.5A 12-280V Equivalent & Substitute Parts

Part Overview

The LC241R is a solid state relay (SSR) manufactured by Sensata Technologies, configured as a single-pole single-throw normally open (SPST-NO) switch with a 1.5A load capacity and input voltage range of 4–10VDC. The device operates with AC load voltages from 12V to 280V and is packaged in a 4-SIP through-hole configuration with PC pin termination.

The LC241R is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality and ensure continued availability for repair, replacement, and new design implementations where this relay specification remains applicable.

Substiute Parts

LC241R

Sensata TechnologiesIn Stock: 1408LC241R Datasheet

Current PartRFQ

ASO241R

Sensata-CrydomIn Stock: 1809ASO241R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LC241R is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: SPST-NO (1 Form A) — the relay must provide single-pole, single-throw, normally open switching functionality
• Output Type: AC — the relay must be rated for AC load switching
• Voltage - Input: 4–10VDC — the control input voltage range must match or encompass this specification
• Voltage - Load: 12V–280V — the relay must support this full AC load voltage range
• Load Current: 1.5A — the relay must be rated for at least 1.5A continuous load current
• Mounting Type: Through Hole — the relay must use through-hole mounting for PCB compatibility
• Package / Case: 4-SIP — the relay must be housed in a 4-pin single in-line package
• Termination Style: PC Pin — the relay must use PC pin termination for direct PCB insertion

The ASO241R meets all of these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The ASO241R is the direct substitute for the LC241R. Both relays are manufactured by Sensata Technologies (Sensata-Crydom division) and share identical electrical and mechanical specifications across all critical parameters.

The ASO241R carries an active product status, ensuring ongoing availability and supply chain continuity. The ASO241R is ROHS3 compliant, providing enhanced environmental and regulatory compliance compared to the obsolete LC241R. Both parts maintain REACH Unaffected status and share the same export classification (EAR99) and tariff code (8536.49.0055).

For new designs or replacement applications, the ASO241R is the recommended selection. For legacy systems currently using the LC241R, direct substitution with the ASO241R requires no circuit modifications or design changes.

Frequently Asked Questions (FAQ)

Q: Can the ASO241R be used as a direct replacement for the LC241R without circuit modifications?

A: Yes. The ASO241R is electrically and mechanically identical to the LC241R across all specified parameters: input voltage (4–10VDC), load voltage (12V–280V), load current (1.5A), circuit configuration (SPST-NO), output type (AC), package (4-SIP), and termination style (PC Pin). No circuit changes are required.

Q: What is the difference between the LC241R and ASO241R?

A: The primary differences are product status and compliance certification. The LC241R is obsolete; the ASO241R is active. The ASO241R is ROHS3 compliant, while the LC241R compliance status is not specified. Both are manufactured by Sensata Technologies and are functionally equivalent.

Q: Are there any packaging differences between the LC241R and ASO241R?

A: The ASO241R is supplied in tube packaging. The LC241R packaging specification is not provided. Both relays use identical 4-SIP through-hole packages with PC pin termination, ensuring compatibility with the same PCB footprints and assembly processes.

Q: Is the ASO241R suitable for new product designs?

A: Yes. The ASO241R is an active product with ROHS3 compliance, making it suitable for new designs requiring a 1.5A SPST-NO solid state relay with 4–10VDC input control and 12V–280V AC load switching capability.

Q: What certifications and compliance standards apply to these relays?

A: Both the LC241R and ASO241R are REACH Unaffected and classified under ECCN EAR99. The ASO241R is additionally ROHS3 compliant. Both share the same HTSUS tariff code (8536.49.0055).