GDP02 DIP Switch SPST Piano Actuator Equivalent & Substitute Parts

Part Overview

The GDP02 is a single-pole single-throw (SPST) DIP switch manufactured by TE Connectivity ALCOSWITCH Switches. This 2-position piano actuator switch is rated for 25mA at 24VDC and features through-hole, right-angle mounting with gold-plated copper alloy contacts. The GDP02 is classified as obsolete, making identification of compatible substitute components necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

GDP02

TE Connectivity ALCOSWITCH SwitchesIn Stock: 937GDP02 Datasheet

Current PartRFQ

194-2MST

CTS ElectrocomponentsIn Stock: 2585194-2MST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GDP02 is determined by electrical and mechanical compatibility within the DIP switch category. The primary substitution criteria are:

Electrical Parameters:

• Circuit configuration must remain SPST
• Voltage rating must equal or exceed 24VDC
• Current rating must equal or exceed 25mA
• Contact finish must be gold-plated for equivalent performance

Mechanical Parameters:

• Number of positions must be 2
• Actuator type must be piano
• Mounting type must be through-hole, right-angle
• Termination style must be PC pin
• Pitch must be 0.100" (2.54mm)

Environmental Parameters:

• Operating temperature range must encompass or exceed -30°C ~ 85°C
• Washable construction required

The CTS Electrocomponents 194-2MST satisfies all substitution criteria with enhanced electrical performance (50mA current rating) and extended electrical life (7,000 cycles).

Parameter Comparison

Engineering Selection Recommendations

The 194-2MST from CTS Electrocomponents is a direct functional substitute for the obsolete GDP02. Both components share identical circuit configuration, voltage rating, actuator type, mounting geometry, and pitch specifications.

The 194-2MST provides enhanced electrical performance with a 50mA current rating, exceeding the GDP02's 25mA specification. This higher current capacity ensures compatibility with applications originally designed for the GDP02 without derating concerns.

The 194-2MST maintains active product status, ensuring long-term availability and supply chain continuity. The component achieves ROHS3 compliance, addressing regulatory requirements that may not have applied to the original GDP02 design.

Operating temperature range extends to -40°C on the lower end, providing improved performance in cold environments compared to the GDP02's -30°C minimum.

Electrical life is rated at 7,000 cycles for the 194-2MST, substantially exceeding the GDP02's 1,000-cycle specification. This extended life rating reflects improved contact durability and reliability.

Physical height above board differs by 0.008" (0.20mm), with the 194-2MST measuring 0.311" versus the GDP02's 0.303". Actuator level differs (raised versus flush/recessed), which may affect tactile feedback and accessibility in confined spaces. PCB layout verification is required to confirm clearance compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 194-2MST directly replace the GDP02 in existing designs?

A: The 194-2MST is electrically and mechanically compatible with the GDP02 for SPST switching applications at 24VDC. Both components feature identical circuit configuration, pitch, mounting type, and termination style. Physical height and actuator level differ slightly; PCB layout review is necessary to confirm clearance and accessibility requirements.

Q: What is the significance of the current rating difference between 25mA and 50mA?

A: The 194-2MST's 50mA current rating exceeds the GDP02's 25mA specification. This higher rating provides additional margin for applications originally designed for the GDP02 and accommodates potential future design modifications without component substitution.

Q: Does the 194-2MST meet modern regulatory requirements?

A: The 194-2MST is ROHS3 compliant, whereas the GDP02 is RoHS non-compliant. Both components maintain REACH Unaffected status. For applications subject to RoHS regulations, the 194-2MST satisfies current compliance requirements.

Q: How do the operating temperature ranges compare?

A: The 194-2MST operates from -40°C to 85°C, extending 10°C lower than the GDP02's -30°C to 85°C range. Both components cover standard industrial temperature specifications. The 194-2MST provides enhanced performance in cold environments.

Q: What is the difference between flush/recessed and raised actuator levels?

A: The GDP02 features a flush, recessed actuator level, while the 194-2MST has a raised actuator. Raised actuators provide easier manual access and tactile feedback. Flush actuators occupy less vertical space and may be preferred in confined applications. Mechanical design review is required to confirm compatibility with enclosure geometry and user interface requirements.

Q: Are there packaging differences between these components?

A: The GDP02 is supplied in standard packaging (not specified), while the 194-2MST is supplied in tube packaging. Tube packaging is standard for DIP switch distribution and does not affect component functionality or performance.

Q: What does the extended electrical life rating mean for the 194-2MST?

A: The 194-2MST is rated for 7,000 electrical cycles compared to the GDP02's 1,000 cycles. This specification indicates the number of on-off switching operations the component can perform while maintaining specified electrical characteristics. The higher rating reflects improved contact durability and longer operational life in high-cycle applications.

Q: Are both components washable?

A: Yes, both the GDP02 and 194-2MST are washable, supporting post-assembly cleaning processes without component degradation.