TL3300DF320Q Equivalent & Substitute Parts

Part Overview

The TL3300DF320Q is an active-status tactile switch manufactured by E-Switch, configured as a SPST-NO (Single Pole Single Throw - Normally Open) momentary contact device. This surface-mount component operates at 0.05A @ 12VDC with a 320gf operating force and 0.35mm switch travel. Finding equivalent or substitute parts becomes necessary when addressing supply chain constraints, design revisions requiring different electrical ratings, or application-specific environmental requirements such as temperature range or ingress protection specifications.

Substiute Parts

TL3300DF320Q

E-SwitchIn Stock: 741TL3300DF320Q Datasheet

Current PartRFQ

1571218-3

TE Connectivity ALCOSWITCH SwitchesIn Stock: 16291571218-3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TL3300DF320Q is determined by the following critical parameters:

• Circuit Configuration: Must remain SPST-NO to maintain functional compatibility
• Mounting Type: Must be Surface Mount to ensure PCB assembly compatibility
• Actuator Height & Outline: Must match 4.30mm vertical height and 12.00mm x 12.00mm footprint to prevent mechanical interference
• Switch Travel: Must be 0.35mm to maintain tactile feedback consistency
• Termination Style: Must be Gull Wing for solder joint compatibility

The substitute part 1571218-3 (TE Connectivity ALCOSWITCH Switches) meets these core mechanical and electrical compatibility criteria. However, differences exist in contact voltage rating (24VDC vs. 12VDC), operating force (160gf vs. 320gf), mechanical life (1,000,000 vs. 100,000 cycles), and environmental specifications (IP67 rating, extended temperature range, sealed construction).

Parameter Comparison

Engineering Selection Recommendations

Both the TL3300DF320Q and 1571218-3 maintain active product status and ROHS3 compliance, ensuring continued manufacturer support and regulatory alignment. The 1571218-3 substitute offers enhanced environmental durability through IP67 sealing and an extended operating temperature range (-35°C ~ 85°C versus -25°C ~ 70°C), making it suitable for applications requiring greater thermal or moisture tolerance. The substitute also provides superior mechanical longevity with 1,000,000 cycle rating compared to 100,000 cycles.

Selection between these parts depends on application voltage requirements: the main part operates at 12VDC while the substitute is rated for 24VDC. The 160gf operating force of the substitute is lower than the 320gf of the main part, resulting in reduced actuation effort. Packaging differs between the two: the main part is supplied in Tape & Reel format while the substitute is supplied in Cut Tape format.

Frequently Asked Questions (FAQ)

Q: Can the 1571218-3 be used as a direct replacement for the TL3300DF320Q in all applications?

A: Mechanical compatibility is confirmed through matching actuator height (4.30mm), outline dimensions (12.00mm x 12.00mm), switch travel (0.35mm), and surface-mount termination. However, electrical compatibility depends on circuit voltage: the substitute is rated for 24VDC while the main part is rated for 12VDC. Operating force differs (160gf vs. 320gf), which affects tactile feedback and actuation effort.

Q: What are the key differences in environmental performance?

A: The 1571218-3 provides IP67 ingress protection (dust tight, waterproof) with sealed construction, whereas the main part has no specified ingress protection rating. The substitute operates across -35°C ~ 85°C compared to -25°C ~ 70°C for the main part, offering broader thermal range coverage.

Q: How do mechanical life ratings compare?

A: The substitute part (1571218-3) is rated for 1,000,000 mechanical cycles, providing ten times the longevity of the main part (100,000 cycles). This difference reflects the sealed construction and enhanced durability design of the TE Connectivity component.

Q: Are there packaging format differences?

A: Yes. The TL3300DF320Q is supplied in Tape & Reel (TR) format, while the 1571218-3 is supplied in Cut Tape (CT) format. This affects handling, storage, and automated assembly processes.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent regulatory compliance. The main part carries REACH Unaffected status while the substitute shows Vendor Undefined REACH status.