SLB1240R45 Equivalent & Substitute Parts

Part Overview

The SLB1240R45 is a slide switch with SPDT (Single Pole Double Throw) configuration manufactured by APEM Inc. It is rated for 300mA at 125V AC and 30V DC, featuring a through-hole right-angle mounting design with PC pin termination. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and design continuity in applications where this switch was originally specified.

Substiute Parts

SLB1240R45

APEM Inc.In Stock: 933SLB1240R45 Datasheet

Current PartRFQ

1825256-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8271825256-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLB1240R45 is determined by the following critical parameters that must match or exceed the original specification:

Mandatory Matching Parameters:

• Circuit configuration: SPDT
• Switch function: On-On
• Current rating: 300mA minimum
• Voltage rating - AC: 125V minimum
• Mounting type: Through Hole, Right Angle
• Termination style: PC Pin
• Actuator length: 4.50mm
• Switch travel: 4.00mm
• Operating temperature range: -20°C to 85°C minimum
• Contact finish: Silver
• Features: Epoxy Sealed Terminals

The substitute part 1825256-1 from TE Connectivity ALCOSWITCH Switches meets all mandatory parameters. This part is currently in active production status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The 1825256-1 from TE Connectivity ALCOSWITCH Switches is a direct functional equivalent to the obsolete SLB1240R45. Both parts are ROHS3 compliant and meet identical electrical and mechanical specifications for AC operation at 125V and 300mA. The substitute part offers extended electrical life (15,000 cycles versus 10,000 cycles), providing improved durability in cyclic applications.

The primary advantage of selecting 1825256-1 is its active production status. As an obsolete part, the SLB1240R45 faces supply constraints and eventual unavailability. The TE Connectivity substitute ensures reliable procurement for new designs, repairs, and field replacements.

Both parts feature identical physical dimensions, mounting configuration, and termination style, enabling direct PCB-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the 1825256-1 be used as a direct replacement for the SLB1240R45 in existing designs?

A: Yes. The 1825256-1 matches all critical electrical and mechanical parameters of the SLB1240R45, including circuit configuration (SPDT), current rating (300mA), AC voltage rating (125V), mounting type (through-hole right angle), termination style (PC pin), and physical dimensions (4.50mm actuator length, 4.00mm travel). No PCB or schematic modifications are required.

Q: What is the difference in electrical life between these parts?

A: The SLB1240R45 is rated for 10,000 electrical cycles, while the 1825256-1 is rated for 15,000 cycles. This means the substitute part has a 50% longer operational life in switching applications, providing improved reliability in high-cycle environments.

Q: Are both parts RoHS compliant?

A: Yes. Both the SLB1240R45 and 1825256-1 are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components.

Q: Why is the SLB1240R45 listed as obsolete?

A: The SLB1240R45 has been discontinued by APEM Inc. and is no longer in active production. Existing inventory may be available from authorized distributors, but long-term supply cannot be guaranteed. The 1825256-1 remains in active production by TE Connectivity, ensuring continued availability.

Q: Are there any packaging differences between these parts?

A: The SLB1240R45 is available in standard packaging, while the 1825256-1 is supplied in bulk packaging. Both use identical PC pin termination and through-hole mounting configuration. Packaging format does not affect electrical or mechanical compatibility.

Q: What is the contact material difference?

A: The SLB1240R45 uses silver contact finish with unspecified base material. The 1825256-1 uses copper alloy contacts with silver finish. Both provide equivalent electrical performance and reliability for the specified 300mA, 125V AC application.