LSYPB1AC Equivalent & Substitute Parts Reference

Part Overview

The LSYPB1AC is a snap action SPDT (Single Pole Double Throw) switch manufactured by Honeywell Sensing and Productivity Solutions, designed for chassis mount applications with cable lead termination. This component operates at 10A AC (120V) and 800mA DC (115V) with IP67 ingress protection rating, suitable for industrial control and switching applications requiring sealed, waterproof operation.

The LSYPB1AC has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain supply chain continuity for existing designs and support ongoing maintenance requirements for installed systems.

Substiute Parts

LSYPB1AC

Honeywell Sensing and Productivity SolutionsIn Stock: 771LSYPB1AC Datasheet

Current PartRFQ

LSYPB3KP-FP

Honeywell Sensing and Productivity SolutionsIn Stock: 1161LSYPB3KP-FP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LSYPB1AC are identified based on strict electrical and mechanical parameter matching within the HDLS series from Honeywell Sensing and Productivity Solutions. The substitution logic requires equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Circuit configuration: SPDT (DB/DM)
• Current rating: 10A AC minimum
• Voltage rating: 120V AC minimum
• Switch function: On-Mom (momentary operation)

Mechanical Parameters (Non-Negotiable):

• Actuator type: Side Rotary - No Lever
• Mounting type: Chassis Mount
• Termination style: Cable Leads
• Cable length: 12 feet

Environmental & Compliance Parameters (Required):

• Ingress protection: IP67 or equivalent
• RoHS compliance status
• Operating temperature range compatibility with application requirements

Substitute parts must maintain functional equivalence across all critical parameters while potentially differing in product status, packaging configuration, or minor mechanical specifications (such as overtravel angle within acceptable tolerances).

Parameter Comparison

Engineering Selection Recommendations

LSYPB3KP-FP is the qualified substitute for LSYPB1AC based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical electrical specifications across AC and DC ratings, circuit configuration, and switching function. The 10A AC at 120V rating and 800mA DC at 115V rating are preserved, ensuring direct functional replacement in existing circuit designs.

Mechanical Compatibility: Actuator type, mounting configuration, and termination method are identical. The 2-degree difference in overtravel (68° versus 66°) falls within acceptable mechanical tolerance for snap action switch operation and does not affect functional performance.

Environmental Sealing: Both parts carry IP67 ingress protection rating, maintaining dust-tight and waterproof operation required for industrial applications.

Regulatory Compliance: LSYPB3KP-FP maintains RoHS compliance status and MSL Level 1 rating, meeting current regulatory requirements for component procurement.

Product Status Advantage: LSYPB3KP-FP holds active product status with confirmed inventory availability (1117 pieces), whereas LSYPB1AC is obsolete. This substitution ensures long-term supply chain continuity.

Temperature Range Consideration: LSYPB3KP-FP operates within -1°C to 105°C, which is narrower than the original part's -40°C to 121°C range. Substitution is appropriate for applications operating within the -1°C to 105°C envelope. Applications requiring operation below -1°C or above 105°C require alternative component evaluation.

Frequently Asked Questions (FAQ)

Q: Can LSYPB3KP-FP directly replace LSYPB1AC in existing installations?

A: Yes, for applications operating within the -1°C to 105°C temperature range. All critical electrical and mechanical parameters match exactly. The substitute part maintains identical circuit configuration (SPDT), current rating (10A AC), voltage rating (120V AC), actuator type (Side Rotary - No Lever), mounting type (Chassis Mount), and termination style (Cable Leads).

Q: What is the significance of the 2-degree difference in overtravel specification?

A: The overtravel difference (66° versus 68°) represents a minor mechanical variation within normal manufacturing tolerance for snap action switches. This difference does not affect switching performance, contact engagement, or functional reliability in standard applications.

Q: Why does LSYPB3KP-FP have a narrower operating temperature range?

A: LSYPB3KP-FP operates from -1°C to 105°C compared to LSYPB1AC's -40°C to 121°C range. This reflects design or manufacturing differences in the active production version. For applications requiring operation outside the -1°C to 105°C window, alternative components must be evaluated.

Q: Are there packaging differences between these parts?

A: Both parts are supplied in bulk packaging. LSYPB3KP-FP has higher inventory availability (1117 pieces) compared to LSYPB1AC (682 pieces), though LSYPB1AC is obsolete and no longer in production.

Q: What compliance certifications apply to LSYPB3KP-FP?

A: LSYPB3KP-FP is RoHS compliant and carries MSL Level 1 (Unlimited) moisture sensitivity rating. ECCN classification is EAR99 and HTSUS code is 8536.50.9055.

Q: Can LSYPB3KP-FP be used in applications requiring the full -40°C to 121°C temperature range?

A: No. LSYPB3KP-FP is rated only to -1°C minimum and 105°C maximum. Applications requiring operation below -1°C or above 105°C require evaluation of alternative components with extended temperature specifications.

Q: What is the cable length for LSYPB3KP-FP?

A: Both LSYPB1AC and LSYPB3KP-FP feature 12-foot cable leads as standard termination.