LSYJB5A-7A Equivalent & Substitute Parts

Part Overview

The LSYJB5A-7A is a snap action SPDT switch manufactured by Honeywell Sensing and Productivity Solutions, rated for 10A at 120V AC operation with chassis mount configuration. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing system support and new designs. The HDLS series switch features spring rod actuation with plug-in termination and operates across a temperature range of -40°C to 93°C. Due to its obsolete status, active alternative components are available from both Honeywell and Omron manufacturers that maintain functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

LSYJB5A-7A

Honeywell Sensing and Productivity SolutionsIn Stock: 900LSYJB5A-7A Datasheet

Current PartRFQ

LSJ1A-7A

Honeywell Sensing and Productivity SolutionsIn Stock: 36769LSJ1A-7A Datasheet

SimilarRFQ

D4A-3112N

Omron Automation and SafetyIn Stock: 1030D4A-3112N Datasheet

SimilarRFQ

D4A-3115N

Omron Automation and SafetyIn Stock: 783D4A-3115N Datasheet

SimilarRFQ

D4A-3116N

Omron Automation and SafetyIn Stock: 980D4A-3116N Datasheet

SimilarRFQ

D4A-3315N

Omron Automation and SafetyIn Stock: 972D4A-3315N Datasheet

SimilarRFQ

D4A-3E15N

Omron Automation and SafetyIn Stock: 1004D4A-3E15N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LSYJB5A-7A is determined by strict adherence to the following electrical and mechanical parameters:

Primary Compatibility Criteria:

• Circuit configuration: SPDT (DB/DM)
• Switch function: On-Mom
• Current rating: 10A AC minimum
• Voltage rating: 120V AC minimum
• Mounting type: Chassis Mount
• RoHS compliance status

Substitute Categories:

Category 1: Direct Honeywell Equivalent The LSJ1A-7A maintains identical electrical specifications (10A AC at 120V, 800mA DC at 115V) with matching SPDT circuit configuration and On-Mom function. This part differs only in product status (active versus obsolete) and operating temperature range (-12°C to 93°C versus -40°C to 93°C). The LSJ1A-7A is the primary direct replacement with 36,706 units in stock.

Category 2: Omron D4A Series Alternatives The D4A-3112N, D4A-3115N, D4A-3116N, D4A-3315N, and D4A-3E15N represent functional substitutes with the following parameter variations:

• Voltage rating: 125V AC (exceeds 120V requirement)
• Current rating: 10A AC, 6A DC (meets or exceeds 10A AC requirement)
• Termination style: Screw Terminal (differs from plug-in)
• Ingress protection: IP67 (not specified in main part)
• Operating force: 100-150gf (differs from 283gf)
• Pretravel: 15° (differs from 1.000")
• Electrical life: 1,000,000 cycles (specified in substitutes only)

These Omron parts maintain SPDT circuit configuration, On-Mom function, and chassis mount configuration while introducing design variations in actuation characteristics and environmental protection.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The LSJ1A-7A is the recommended substitute for the obsolete LSYJB5A-7A. Both components are manufactured by Honeywell Sensing and Productivity Solutions within the HDLS series. The LSJ1A-7A maintains identical electrical specifications (10A AC at 120V, 800mA DC at 115V), SPDT circuit configuration, On-Mom function, and plug-in termination. The LSJ1A-7A is active in production with 36,706 units in stock, ensuring long-term availability. The operating temperature range of the LSJ1A-7A (-12°C to 93°C) covers the upper portion of the LSYJB5A-7A range; applications requiring operation below -12°C require evaluation of the original part's extended low-temperature capability.

For Alternative Substitution (When Direct Replacement Unavailable): The Omron D4A series (D4A-3112N, D4A-3115N, D4A-3116N, D4A-3315N, D4A-3E15N) provides functional alternatives with the following considerations:

All D4A variants maintain SPDT circuit configuration, On-Mom function, 10A AC current rating, and chassis mount configuration. The 125V AC rating exceeds the 120V requirement. However, termination style transitions from plug-in to screw terminal, requiring mechanical interface modification. Operating force ranges from 100gf to 150gf, differing from the 283gf specification. Pretravel measurement changes from linear (1.000") to angular (15°), indicating different actuation geometry. All D4A variants include IP67 ingress protection and 1,000,000 cycle electrical life specifications not present in the original part.

The D4A-3315N and D4A-3E15N include status indicator features not present in the LSYJB5A-7A. The D4A-3E15N carries "Not applicable" RoHS status, whereas the LSYJB5A-7A is RoHS Compliant.

Compliance Considerations: All substitute parts maintain RoHS compliance status (with exception of D4A-3E15N) and MSL 1 (Unlimited) moisture sensitivity rating, matching the original component. All parts carry EAR99 ECCN classification.

Frequently Asked Questions (FAQ)

Q: Can the LSJ1A-7A directly replace the LSYJB5A-7A without modification?

A: The LSJ1A-7A is a direct electrical and mechanical equivalent with identical current ratings (10A AC, 800mA DC), voltage ratings (120V AC, 115V DC), circuit configuration (SPDT), switch function (On-Mom), mounting type (chassis mount), and termination style (plug-in). No modification is required for electrical or mechanical interface. The operating temperature range differs (-12°C to 93°C versus -40°C to 93°C); applications requiring operation below -12°C require assessment of temperature requirements.

Q: What are the key differences between the Honeywell LSJ1A-7A and Omron D4A series substitutes?

A: The LSJ1A-7A maintains identical specifications to the original LSYJB5A-7A with the exception of operating temperature range. The Omron D4A series introduces multiple parameter variations: termination changes from plug-in to screw terminal; operating force reduces from 283gf to 100-150gf; pretravel measurement changes from linear (1.000") to angular (15°); voltage rating increases to 125V AC; DC current rating increases to 6A; and ingress protection (IP67) is added. These differences require mechanical interface redesign and may affect actuation characteristics in the application.

Q: Are all substitute parts RoHS compliant?

A: Six of the seven substitute parts are RoHS Compliant: LSJ1A-7A, D4A-3112N, D4A-3115N, D4A-3116N, and D4A-3315N. The D4A-3E15N carries "Not applicable" RoHS status. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the difference between D4A-3315N and D4A-3E15N?

A: The D4A-3315N and D4A-3E15N are functionally identical with the following exception: D4A-3315N is RoHS Compliant, while D4A-3E15N carries "Not applicable" RoHS status. Both include status indicator features, operate at 150gf operating force, and maintain identical electrical specifications (10A AC at 125V, 6A DC at 30V).

Q: Can Omron D4A parts be used in applications requiring the original 283gf operating force?

A: No. The Omron D4A series operates at 100-150gf (depending on actuator type), which is significantly lower than the original 283gf specification. Applications with specific actuation force requirements must use the LSJ1A-7A, which maintains the 283gf operating force.

Q: What termination modifications are required when substituting with Omron D4A parts?

A: The LSYJB5A-7A and LSJ1A-7A use plug-in termination, while all Omron D4A variants use screw terminal termination. Mechanical interface redesign is required, including connector modification or replacement with screw terminal connectors compatible with the D4A series.

Q: Are there inventory considerations for long-term supply?

A: The LSJ1A-7A offers the highest inventory availability with 36,706 units in stock, ensuring long-term supply continuity. Omron D4A variants maintain active production status with inventory ranging from 723 to 945 units. The original LSYJB5A-7A, classified as obsolete, has limited inventory (806 units) with no ongoing production.

Q: Do all substitute parts support the full -40°C to 93°C operating temperature range of the original part?

A: No. The LSJ1A-7A operates from -12°C to 93°C, limiting low-temperature operation. Omron D4A-3112N, D4A-3115N, and D4A-3116N operate from -20°C to 100°C. Omron D4A-3315N and D4A-3E15N operate from -10°C to 80°C. Applications requiring operation below -12°C or above 100°C require evaluation against specific temperature requirements.