EG1260CSQ Equivalent & Substitute Parts

Part Overview

The EG1260CSQ is an active SPDT slide switch manufactured by E-Switch, designed for surface mount, right-angle applications with a 300mA DC current rating at 4V. This component is a standard electromechanical switch suitable for on-on switching functions in compact form factors. Alternative equivalent parts may be required due to inventory constraints, specific contact finish requirements, or actuator material preferences in design specifications.

Substiute Parts

EG1260CSQ

E-SwitchIn Stock: 1049EG1260CSQ Datasheet

Current PartRFQ

CUS-12TB

Nidec Components CorporationIn Stock: 31895CUS-12TB Datasheet

MFR RecommendedRFQ

SK-12C0405-SG 1.5 RT

C&KIn Stock: 5373SK-12C0405-SG 1.5 RT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EG1260CSQ is determined by strict equivalence across the following critical parameters:

• Circuit configuration must be SPDT
• Current rating must be 300mA DC minimum
• Voltage rating must be 4V DC minimum
• Mounting type must be Surface Mount, Right Angle
• Termination style must be Gull Wing
• Actuator length must be 1.50mm
• Switch travel must be 1.50mm
• Electrical life must be 10,000 Cycles minimum
• RoHS3 compliance and MSL 1 rating required

The substitute parts CUS-12TB and SK-12C0405-SG 1.5 RT meet all mandatory electrical and mechanical parameters. Variations in contact finish (silver vs. gold), contact timing behavior (shorting vs. non-shorting), and actuator material do not preclude functional equivalence within the specified electrical operating envelope.

Parameter Comparison

Engineering Selection Recommendations

Both CUS-12TB and SK-12C0405-SG 1.5 RT are qualified equivalents to the EG1260CSQ based on electrical and mechanical parameter alignment. All three parts maintain ROHS3 compliance and MSL 1 ratings, ensuring compatibility with standard PCB assembly and storage protocols.

The CUS-12TB features gold contact finish and non-shorting contact timing, which may provide enhanced contact reliability in low-signal applications. The SK-12C0405-SG 1.5 RT maintains silver contact finish and matches the original operating force specification of 150gf, providing direct mechanical behavior equivalence.

Selection between these substitutes should be based on specific application requirements regarding contact finish preference, contact timing behavior, and actuator material compatibility with the PCB assembly process.

Frequently Asked Questions (FAQ)

Q: Can CUS-12TB be used as a direct replacement for EG1260CSQ?

A: Yes. Both parts share identical circuit configuration (SPDT), current rating (300mA DC), voltage rating (4V DC), mounting type (Surface Mount, Right Angle), termination style (Gull Wing), actuator length (1.50mm), switch travel (1.50mm), and electrical life (10,000 Cycles). Differences in contact finish and contact timing do not affect functional equivalence within the specified electrical envelope.

Q: What is the difference between shorting and non-shorting contact timing?

A: Shorting contact timing (MBB - Make Before Break) maintains electrical continuity between the two throw positions during switching. Non-shorting contact timing (BBM - Break Before Make) breaks the connection to the first position before establishing connection to the second position. The EG1260CSQ uses shorting timing; the CUS-12TB uses non-shorting timing. Application requirements determine which is appropriate.

Q: Does the gold contact finish of CUS-12TB affect compatibility?

A: No. Gold contact finish is a material enhancement that does not affect electrical or mechanical compatibility. Gold provides superior corrosion resistance compared to silver, making it suitable for applications requiring extended shelf life or exposure to corrosive environments.

Q: Are all three parts suitable for the same PCB assembly process?

A: Yes. All three parts are surface mount components with gull wing termination, MSL 1 rating, and ROHS3 compliance. They are compatible with standard reflow soldering processes and require no special handling beyond standard moisture-controlled storage.

Q: What is the significance of the 150gf vs. 204gf operating force difference?

A: Operating force indicates the mechanical effort required to actuate the switch. The EG1260CSQ and SK-12C0405-SG 1.5 RT both require 150gf. The CUS-12TB requires 204gf, representing approximately 36% higher actuation force. This difference may be relevant in applications with mechanical constraints or user interface considerations.