LL1105XF065Q Equivalent & Substitute Parts

Part Overview

The LL1105XF065Q is a tactile switch manufactured by E-Switch, classified as SPST-NO (Single Pole Single Throw - Normally Open) with side actuation and through-hole, right-angle mounting. This component is rated for 0.05A at 12VDC and is currently in active production status with 1,076 pieces in stock. The switch features a 5.85mm actuator length, 65gf operating force, and 5,000,000 mechanical life cycles. Substitute parts are necessary when the main part becomes unavailable, when alternative voltage ratings are required for system redesign, or when different mechanical specifications better suit application requirements.

Substiute Parts

LL1105XF065Q

E-SwitchIn Stock: 1091LL1105XF065Q Datasheet

Current PartRFQ

1825968-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 177521825968-2 Datasheet

MFR RecommendedRFQ

EVQ-PC205K

Panasonic Electronic ComponentsIn Stock: 2145EVQ-PC205K Datasheet

MFR RecommendedRFQ

EVQ-PC405K

Panasonic Electronic ComponentsIn Stock: 1434EVQ-PC405K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LL1105XF065Q is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration (SPST-NO)
• Switch function (Off-Mom momentary operation)
• Mounting type (Through Hole, Right Angle)
• Actuator orientation (Side Actuated)
• Termination style (PC Pin)
• Switch travel distance (0.25mm)

Secondary Compatibility Criteria:

• Contact rating voltage and current capacity
• Operating force range
• Mechanical life cycle rating
• Operating temperature range
• Physical outline dimensions
• Actuator length for right-angle mounting

The substitute parts listed (1825968-2, EVQ-PC205K, EVQ-PC405K) share the primary compatibility criteria with the main part. However, variations exist in contact rating voltage, operating force, mechanical life cycles, and actuator length. These variations determine the degree of functional equivalence and application suitability.

Parameter Comparison

Engineering Selection Recommendations

1825968-2 (TE Connectivity ALCOSWITCH Switches)

This part maintains active production status and ROHS3 compliance. The contact rating of 0.05A @ 24VDC exceeds the main part's 12VDC specification, providing higher voltage capability. The 6.35mm actuator length is 0.5mm longer than the LL1105XF065Q, which may affect PCB layout compatibility. The 160gf operating force is significantly higher than the 65gf of the main part. Mechanical life is rated at 100,000 cycles, substantially lower than the main part's 5,000,000 cycles. The extended operating temperature range (-35°C ~ 85°C) provides broader environmental tolerance. This part is suitable for applications requiring higher voltage operation and extended temperature performance, provided that the increased actuator length and operating force do not conflict with mechanical constraints.

EVQ-PC205K (Panasonic Electronic Components)

This part has obsolete product status and is no longer in active production. The contact rating of 0.02A @ 15VDC is lower than the main part's 0.05A @ 12VDC specification. The 4.75mm actuator length is 1.1mm shorter than the main part, which may provide better fit in space-constrained applications. The 160gf operating force is higher than the main part's 65gf. Mechanical life is 100,000 cycles. RoHS compliance is confirmed but not specifically ROHS3. Use of this part is limited to legacy system maintenance or when component availability from active manufacturers is exhausted.

EVQ-PC405K (Panasonic Electronic Components)

This part has obsolete product status and is no longer in active production. The contact rating of 0.02A @ 15VDC is lower than the main part's 0.05A @ 12VDC specification. The 4.75mm actuator length is 1.1mm shorter than the main part. The 100gf operating force is higher than the main part's 65gf but lower than the EVQ-PC205K. Mechanical life is 100,000 cycles. RoHS compliance is confirmed but not specifically ROHS3. Use of this part is limited to legacy system maintenance or when component availability from active manufacturers is exhausted.

Frequently Asked Questions (FAQ)

Q: Can the 1825968-2 be used as a direct replacement for the LL1105XF065Q?

A: The 1825968-2 shares the same circuit configuration (SPST-NO), switch function (Off-Mom), mounting type (Through Hole, Right Angle), and termination style (PC Pin). However, the 6.35mm actuator length differs from the 5.85mm of the main part, and the 160gf operating force is significantly higher than the 65gf of the main part. PCB layout and mechanical actuation characteristics must be verified before substitution.

Q: Why do the Panasonic parts (EVQ-PC205K and EVQ-PC405K) have lower contact ratings than the main part?

A: The Panasonic EVQPC series is rated for 0.02A @ 15VDC, which is a different electrical specification class than the LL1105XF065Q (0.05A @ 12VDC). These parts are suitable only for applications with lower current requirements. The voltage rating difference also affects circuit compatibility.

Q: What is the significance of the mechanical life cycle difference?

A: The LL1105XF065Q is rated for 5,000,000 mechanical cycles, while all substitute parts are rated for 100,000 cycles. This 50-fold difference indicates that the main part is designed for high-cycle applications. Substitution with lower-cycle-rated parts is appropriate only for applications with significantly lower actuation frequency.

Q: Are the Panasonic parts still available for new designs?

A: Both EVQ-PC205K and EVQ-PC405K have obsolete product status, indicating they are no longer in active production. These parts should not be selected for new designs. They are suitable only for legacy system maintenance or repair when original parts are unavailable.

Q: How does the actuator length affect substitution compatibility?

A: The actuator length determines the physical reach of the switch button from the PCB surface. The LL1105XF065Q has a 5.85mm actuator length. The 1825968-2 has 6.35mm (0.5mm longer), while both Panasonic parts have 4.75mm (1.1mm shorter). These differences affect PCB layout, enclosure design, and user interface ergonomics. Mechanical fit must be verified before substitution.

Q: What does ROHS3 compliance mean compared to general RoHS compliance?

A: ROHS3 refers to compliance with the third iteration of the Restriction of Hazardous Substances Directive, which includes additional restricted substances beyond earlier versions. The LL1105XF065Q and 1825968-2 are ROHS3 compliant. The Panasonic parts are RoHS compliant but not specifically designated as ROHS3. For applications requiring ROHS3 certification, the Panasonic parts may not meet regulatory requirements.

Q: Can the 1825968-2 be used in a 12VDC circuit designed for the LL1105XF065Q?

A: Yes, the 1825968-2 is rated for 0.05A @ 24VDC, which exceeds the 12VDC requirement of the original circuit. The higher voltage rating provides margin for the lower voltage application. However, the increased operating force (160gf vs. 65gf) and different actuator length must be considered for mechanical compatibility.