GDH02STR Equivalent & Substitute Parts

Part Overview

The GDH02STR is a surface mount DIP slide switch manufactured by TE Connectivity ALCOSWITCH Switches. This component is a single-pole, single-throw (SPST) switch rated for 25mA at 24VDC with a 2-position slide actuator. The GDH02STR is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain electrical performance across the specified voltage and current ratings while accommodating surface mount assembly requirements.

Key Parameters

Parameter	Specification
Circuit Configuration	SPST (Single-Pole, Single-Throw)
Number of Positions	2
Current Rating	25mA
Voltage Rating	24VDC
Actuator Type	Slide (Standard)
Mounting Type	Surface Mount
Termination Style	Gull Wing
Pitch	0.050" (1.27mm), Half
Contact Material	Copper Alloy
Contact Finish	Gold
Operating Temperature Range	-30°C ~ 85°C
Mechanical Life	1,000 Cycles
Electrical Life	1,000 Cycles

Substitute Part Grouping Explanation

Substitute parts for the GDH02STR are classified based on strict electrical and mechanical compatibility. All substitute candidates must satisfy the following core parameters:

Mandatory Matching Parameters:

Circuit: SPST
Number of Positions: 2
Current Rating: 25mA
Voltage Rating: 24VDC
Actuator Type: Slide (Standard)
Mounting Type: Surface Mount
Termination Style: Gull Wing
Pitch: 0.050" (1.27mm), Half
Contact Material: Copper Alloy
Contact Finish: Gold

Allowable Variations:

Product Status: Active substitutes are preferred over obsolete parts
Packaging: Tape & Reel (TR) or standard packaging
Height Above Board: Minor dimensional variations acceptable within assembly constraints
Body Material: Polyphenylene Sulfide (PPS) or Polyamide (PA/Nylon)
Operating Temperature Range: Extended ranges acceptable
RoHS/REACH Compliance: Active parts with current compliance preferred

Parameter Comparison

Parameter	GDH02STR (Main)	1571983-3 (Direct)	97R02RT (Similar)	97R02SRT (Similar)
Manufacturer	TE Connectivity ALCOSWITCH	TE Connectivity ALCOSWITCH	Grayhill Inc.	Grayhill Inc.
Product Status	Obsolete	Active	Active	Active
Circuit	SPST	SPST	SPST	SPST
Number of Positions	2	2	2	2
Current Rating (Amps)	25mA	25mA	25mA	25mA
Voltage Rating	24VDC	24VDC	24VDC	24VDC
Actuator Type	Slide (Standard)	Slide (Standard)	Slide (Standard)	Slide (Standard)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination Style	Gull Wing	Gull Wing	Gull Wing	Gull Wing
Pitch	0.050" (1.27mm), Half	0.050" (1.27mm), Half	0.050" (1.27mm), Half	0.050" (1.27mm), Half
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy
Contact Finish	Gold	Gold	Gold	Gold
Height Above Board	0.091" (2.30mm)	0.091" (2.30mm)	0.061" (1.55mm)	0.061" (1.55mm)
Body Material	Polyphenylene Sulfide (PPS)	Polyphenylene Sulfide (PPS)	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Operating Temperature	-30°C ~ 85°C	-30°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mechanical Life	1,000 Cycles	1,000 Cycles	1,000 Cycles	1,000 Cycles
Electrical Life	1,000 Cycles	1,000 Cycles	Not Specified	Not Specified
Packaging	Standard	Tape & Reel (TR)	Standard	Tape & Reel (TR)
RoHS Status	Non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
Washable	Yes	Yes	No	Yes

Engineering Selection Recommendations

Primary Substitute: 1571983-3

The 1571983-3 is the direct equivalent substitute for the GDH02STR. Both parts are manufactured by TE Connectivity ALCOSWITCH Switches within the GDH series and share identical electrical specifications, mechanical dimensions, and contact characteristics. The 1571983-3 is classified as Active product status, ensuring ongoing availability and support. This part is ROHS3 compliant and carries Tape & Reel packaging, suitable for automated assembly processes. The 1571983-3 is the recommended first choice for direct replacement applications.

Alternative Substitutes: 97R02RT and 97R02SRT

The Grayhill Inc. 97R02RT and 97R02SRT switches provide functional equivalence with the following considerations:

Both parts maintain identical electrical ratings (25mA, 24VDC, SPST, 2-position)
Both are Active product status with current RoHS compliance
Height above board is reduced to 0.061" (1.55mm) compared to 0.091" (2.30mm) on the GDH02STR, resulting in lower profile assembly
Operating temperature range extends to -40°C, providing wider environmental tolerance
Body material differs (Polyamide/Nylon versus Polyphenylene Sulfide)
The 97R02SRT includes Tape & Reel packaging and Tape Seal features; the 97R02RT uses standard packaging without washable designation

These Grayhill alternatives are suitable for applications where lower profile height is beneficial or where extended temperature range is required. The 97R02SRT is preferred over 97R02RT due to Tape & Reel packaging compatibility with modern assembly equipment.

Frequently Asked Questions (FAQ)

Q: Can the 1571983-3 be used as a direct replacement for GDH02STR in existing designs?

A: Yes. The 1571983-3 is electrically and mechanically identical to the GDH02STR. Both parts share the same circuit configuration (SPST), current rating (25mA), voltage rating (24VDC), actuator type (Slide Standard), mounting type (Surface Mount), termination style (Gull Wing), and pitch (0.050"). The primary difference is product status (Active versus Obsolete) and RoHS compliance level.

Q: What are the dimensional differences between the TE Connectivity and Grayhill substitutes?

A: The primary dimensional difference is height above board. The TE Connectivity GDH02STR and 1571983-3 measure 0.091" (2.30mm), while the Grayhill 97R02RT and 97R02SRT measure 0.061" (1.55mm). Length varies slightly: TE parts are 0.144" (3.67mm) versus Grayhill parts at 0.148" (3.77mm). These variations may affect PCB layout and enclosure clearance.

Q: Are there packaging differences between substitute options?

A: Yes. The GDH02STR is supplied in standard packaging. The 1571983-3 and 97R02SRT are supplied in Tape & Reel (TR) format, suitable for automated pick-and-place assembly. The 97R02RT is supplied in standard packaging. Tape & Reel packaging is preferred for high-volume production environments.

Q: What is the washable designation, and which substitutes support it?

A: Washable designation indicates the component can withstand aqueous cleaning processes used in PCB manufacturing. The GDH02STR, 1571983-3, and 97R02SRT are washable. The 97R02RT is not washable. This distinction is relevant for manufacturing processes that include post-solder cleaning steps.

Q: Do all substitutes maintain the same operating temperature range?

A: No. The GDH02STR and 1571983-3 operate from -30°C to 85°C. The Grayhill 97R02RT and 97R02SRT extend the lower limit to -40°C, providing a wider operating range. The upper limit remains 85°C across all parts.

Q: What compliance certifications differ between the main part and substitutes?

A: The GDH02STR is RoHS non-compliant. The 1571983-3 is ROHS3 compliant. Both Grayhill parts (97R02RT and 97R02SRT) are RoHS compliant. For applications requiring RoHS compliance, any of the three substitute options are suitable. All parts are classified as EAR99 for export control purposes.

Q: Can the Grayhill 97R02RT be used in applications requiring washable components?

A: No. The 97R02RT is not designated as washable. If post-solder aqueous cleaning is required, use the 1571983-3 or 97R02SRT instead.

Q: What is the mechanical life specification, and is it consistent across all parts?

A: Mechanical life is specified as 1,000 cycles for the GDH02STR, 1571983-3, 97R02RT, and 97R02SRT. This specification indicates the number of actuator cycles the switch can withstand under normal operating conditions.

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