SLV04 Equivalent & Substitute Parts

Part Overview

The SLV04 is a 4-position DIP slide switch manufactured by TE Connectivity ALCOSWITCH Switches, designed for through-hole mounting applications. This component features SPST (Single Pole Single Throw) switching with a 0.4VA current rating at 20VAC/DC, utilizing a standard slide actuator with flush, recessed positioning. The SLV04 is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain mechanical compatibility while meeting application-specific electrical requirements.

Substiute Parts

SLV04

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1129SLV04 Datasheet

Current PartRFQ

1977104-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11381977104-2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLV04 is determined by strict adherence to mechanical and electrical compatibility parameters. The primary substitute identified is the TE Connectivity part number 1977104-2, which maintains the following critical compatibility criteria:

Mechanical Compatibility Requirements:

• SPST circuit configuration (single pole, single throw switching)
• 4-position DIP switch architecture
• Standard slide actuator with flush, recessed actuation level
• Through-hole mounting with PC pin termination
• 0.100" (2.54mm) full pitch spacing
• Polyphenylene Sulfide (PPS) body material
• Gold-plated contact finish
• Operating temperature range of -30°C ~ 85°C
• 1,000 cycle mechanical and electrical life ratings

Electrical Compatibility Constraints: The SLV04 operates at 0.4VA / 20VAC/DC, while the 1977104-2 operates at 10mA / 5VDC. Substitution is valid only when the application electrical requirements fall within the lower voltage and current specifications of the substitute part. The substitute part represents a lower-power variant suitable for reduced-voltage applications.

Physical Dimensional Variance: The 1977104-2 exhibits a reduced height above board of 0.244" (6.20mm) compared to the SLV04's 0.315" (8.00mm), and a slightly increased length of 0.526" (13.35mm) versus 0.498" (12.65mm). These dimensional differences require PCB layout verification prior to implementation.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SLV04 is classified as obsolete, while the 1977104-2 maintains active product status with TE Connectivity. For new designs and production continuity, the 1977104-2 is the designated substitute when electrical requirements align with its 5VDC / 10mA specifications.

Regulatory Compliance: The SLV04 is RoHS non-compliant, whereas the 1977104-2 achieves RoHS3 compliance. Applications subject to RoHS directives or requiring compliant component documentation must utilize the 1977104-2. Both parts maintain MSL 1 (Unlimited) moisture sensitivity classification and EAR99 export control designation.

Electrical Requirement Verification: Substitution of the SLV04 with the 1977104-2 is valid exclusively when the application operates at or below 5VDC and 10mA per switch position. Applications requiring the full 0.4VA / 20VAC/DC capability of the SLV04 cannot utilize the 1977104-2 as a direct substitute and require alternative component sourcing.

Mechanical Integration: The reduced height above board (0.244" versus 0.315") and increased length (0.526" versus 0.498") of the 1977104-2 necessitate PCB layout verification. Clearance validation for adjacent components and enclosure constraints is required prior to design implementation.

Contact Material Variance: The SLV04 utilizes beryllium copper contacts, while the 1977104-2 employs copper alloy contacts. Both maintain gold plating and are suitable for standard switching applications within their respective electrical ratings.

Frequently Asked Questions (FAQ)

Q: Can the 1977104-2 directly replace the SLV04 in existing designs?

A: Direct replacement is possible only when the application electrical requirements do not exceed 5VDC and 10mA per switch position. The SLV04's 20VAC/DC / 0.4VA rating exceeds the 1977104-2's capability. PCB layout verification is required due to dimensional differences in height and length.

Q: What are the key mechanical compatibility factors between these parts?

A: Both parts share identical SPST 4-position configuration, standard slide actuator with flush/recessed actuation, through-hole mounting with PC pin termination, 0.100" pitch spacing, PPS body material, and gold-plated copper-based contacts. Operating temperature range and lifecycle ratings are identical.

Q: How do the electrical ratings differ between SLV04 and 1977104-2?

A: The SLV04 is rated for 0.4VA at 20VAC/DC, while the 1977104-2 is rated for 10mA at 5VDC. The substitute part operates at significantly lower voltage and current levels. Applications requiring higher electrical capacity must retain the SLV04 or identify alternative components.

Q: What packaging differences exist between these parts?

A: The SLV04 is supplied with unspecified packaging, while the 1977104-2 is packaged in tubes. Packaging format may affect procurement, handling, and integration into automated assembly processes.

Q: Are there RoHS compliance implications for substitution?

A: Yes. The SLV04 is RoHS non-compliant, while the 1977104-2 is RoHS3 compliant. Applications subject to RoHS directives or requiring compliant component documentation must utilize the 1977104-2. Both parts maintain identical MSL 1 (Unlimited) moisture sensitivity classification.

Q: What dimensional changes occur with the 1977104-2 substitute?

A: The 1977104-2 exhibits a height above board of 0.244" (6.20mm) compared to the SLV04's 0.315" (8.00mm), representing a 0.071" reduction. Length increases from 0.498" (12.65mm) to 0.526" (13.35mm), a 0.028" increase. PCB layout and clearance verification is required.

Q: Why is the SLV04 classified as obsolete?

A: The SLV04 is no longer in active production by TE Connectivity. The 1977104-2 represents the current active alternative for applications within its electrical specifications. For applications exceeding the 1977104-2's ratings, alternative component sourcing from current product lines is necessary.

Q: Can both parts be used interchangeably in the same circuit?

A: Interchangeability is limited to circuits operating at or below 5VDC and 10mA per switch position. Circuits requiring higher voltage or current operation cannot utilize the 1977104-2. Mechanical footprint differences also require PCB layout verification before implementation.