TE Connectivity 3-435640-9 DIP Switch SPST Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3-435640-9 is an 8-position DIP switch with SPST circuit configuration, rocker actuator, and 60mA at 5VDC rating. This component is classified as Active product status with 934 units currently in stock. The part is housed in bulk packaging and features sealed construction with gold-plated copper alloy contacts suitable for through-hole PCB mounting.

Identification of equivalent and substitute parts becomes necessary when bulk packaging is unavailable, when alternative actuator types or electrical ratings better suit application requirements, or when RoHS compliance is mandated for new designs.

Substiute Parts

3-435640-9

TE Connectivity ALCOSWITCH SwitchesIn Stock: 10243-435640-9 Datasheet

Current PartRFQ

3-5435640-9

TE Connectivity ALCOSWITCH SwitchesIn Stock: 100233-5435640-9 Datasheet

DirectRFQ

5435802-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 18215435802-1 Datasheet

SimilarRFQ

78B08T

Grayhill Inc.In Stock: 351278B08T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3-435640-9 are classified into two categories based on electrical and mechanical compatibility:

Direct Electrical Equivalent (Identical Specifications): Part 3-5435640-9 maintains identical electrical parameters: SPST circuit, 8 positions, 60mA at 5VDC, rocker actuator, and through-hole mounting. The primary difference is packaging format (tube versus bulk) and product status (Last Time Buy versus Active). This part achieves RoHS3 compliance and MSL Level 1 rating, addressing regulatory requirements for the original part.

Functional Substitutes (Differing Electrical Ratings): Parts 5435802-1 and 78B08T share the core mechanical structure (8-position SPST DIP switch, through-hole mounting, 0.100" pitch) but differ in actuator type, current rating, voltage rating, and operating temperature range. These parts are suitable only when application requirements permit the specified electrical parameter changes.

Key Parameters Determining Substitution Eligibility:

• Circuit configuration (SPST)
• Number of positions (8)
• Mounting type (Through Hole)
• Pitch spacing (0.100")
• Contact material and finish (Copper Alloy, Gold)
• Length (0.880")

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): Part 3-5435640-9 is the direct equivalent to 3-435640-9, maintaining all electrical specifications including 60mA at 5VDC rating and rocker actuator configuration. This part is preferred when RoHS3 compliance is required for new designs or when tube packaging is acceptable. The part carries Last Time Buy status, indicating limited future availability; procurement planning should account for this designation.

For RoHS Compliance Requirement: When regulatory compliance with RoHS3 is mandatory, part 3-5435640-9 is the appropriate selection. Both substitute parts 5435802-1 and 78B08T also achieve RoHS3 compliance but require verification that their differing electrical ratings align with application specifications.

For Functional Substitution (Electrical Parameter Changes): Part 5435802-1 is suitable only when the application circuit can operate at 24VDC with reduced current capacity (25mA). The piano actuator type and right-angle mounting configuration differ from the original rocker design. Part 78B08T accommodates higher current requirements (150mA) and voltage (30VDC) but operates within a narrower temperature range (-40°C to 85°C) compared to the original part (-55°C to 105°C). The slide actuator type represents a different user interface from the rocker actuator.

Packaging and Availability Considerations: The original part 3-435640-9 is available in bulk packaging with 934 units in stock and Active product status. Part 3-5435640-9 offers significantly higher inventory (9913 units) in tube packaging but carries Last Time Buy status. Functional substitutes 5435802-1 and 78B08T maintain Active status with 1720 and 3409 units respectively.

Frequently Asked Questions (FAQ)

Q: Can 3-5435640-9 be used as a direct replacement for 3-435640-9? A: Yes. Part 3-5435640-9 maintains identical electrical specifications (SPST, 8 positions, 60mA at 5VDC), actuator type (rocker), and mechanical dimensions. The differences are packaging format (tube versus bulk) and product status (Last Time Buy versus Active). Electrical and mechanical compatibility is complete.

Q: What is the primary difference between the main part and its direct equivalent? A: The main part 3-435640-9 is RoHS non-compliant and supplied in bulk packaging. The direct equivalent 3-5435640-9 achieves RoHS3 compliance and is supplied in tube packaging. Both parts are electrically and mechanically identical.

Q: Can 5435802-1 replace 3-435640-9 in any application? A: Part 5435802-1 shares the same circuit configuration (SPST), position count (8), and pitch (0.100"), but differs in three critical parameters: voltage rating (24VDC versus 5VDC), current rating (25mA versus 60mA), and actuator type (piano versus rocker). Substitution is possible only when the application circuit operates at 24VDC with maximum current draw not exceeding 25mA.

Q: What are the temperature operating range differences among these parts? A: The main part 3-435640-9 and its direct equivalent 3-5435640-9 operate from -55°C to 105°C. Part 5435802-1 maintains the same range. Part 78B08T operates within a narrower range of -40°C to 85°C, making it unsuitable for applications requiring the full -55°C to 105°C specification.

Q: Why does 78B08T have a higher current rating than the original part? A: Part 78B08T is manufactured by Grayhill Inc. and belongs to the 78 series, representing a different product line from the TE Connectivity 7100 series. The 150mA rating reflects the design specifications of this alternative product family. This higher rating does not make it a direct equivalent; it is a functional substitute suitable only when higher current capacity is required.

Q: What is the significance of the Last Time Buy status on 3-5435640-9? A: Last Time Buy status indicates that TE Connectivity will discontinue this part after current inventory is depleted. While the part remains available with substantial inventory (9913 units), long-term procurement planning should account for this designation. For applications requiring extended component availability, the main part 3-435640-9 with Active status may be preferable despite RoHS non-compliance.

Q: Are all these parts suitable for washable PCB assembly processes? A: The main part 3-435640-9 is specified as washable. The direct equivalent 3-5435640-9 maintains this feature. Part 5435802-1 is not washable. Part 78B08T does not specify washable capability. Washability requirements must be confirmed before substitution.

Q: How do the mechanical life ratings compare? A: The main part 3-435640-9 and its direct equivalent 3-5435640-9 are rated for 2,000 mechanical cycles. Part 5435802-1 is rated for 7,000 cycles, providing extended mechanical life. Part 78B08T is rated for 2,000 cycles. Applications requiring high cycle counts should consider part 5435802-1 if electrical parameters permit.

Q: What packaging options are available? A: The main part 3-435640-9 is supplied in bulk packaging. The direct equivalent 3-5435640-9 and functional substitutes 5435802-1 and 78B08T are supplied in tube packaging. Bulk packaging is typically used for high-volume manufacturing, while tube packaging is standard for component distribution and lower-volume applications.