GDH02S Equivalent & Substitute Parts

Part Overview

The GDH02S 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 GDH02S is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical compatibility while meeting current manufacturing and compliance standards.

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 Finish	Gold
Operating Temperature Range	-30°C ~ 85°C

Substitute Part Grouping Explanation

Substitution of the GDH02S is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

Circuit configuration (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 finish (Gold)

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in secondary parameters such as body material, height above board, operating temperature range, and compliance status are documented to enable informed selection based on application requirements and design constraints.

Parameter Comparison

Parameter	GDH02S (Main)	1571983-1 (Direct)	218-2LPST (Direct)	97R02ST (Similar)	97R02T (Similar)
Manufacturer	TE Connectivity ALCOSWITCH	TE Connectivity ALCOSWITCH	CTS Electrocomponents	Grayhill Inc.	Grayhill Inc.
Product Status	Obsolete	Active	Active	Active	Active
Circuit	SPST	SPST	SPST	SPST	SPST
Number of Positions	2	2	2	2	2
Current Rating (Amps)	25mA	25mA	25mA	25mA	25mA
Voltage Rating	24VDC	24VDC	24VDC	24VDC	24VDC
Actuator Type	Slide (Standard)	Slide (Standard)	Slide (Standard)	Slide (Standard)	Slide (Standard)
Actuator Level	Flush, Recessed	Flush, Recessed	Flush, Recessed	Flush, Recessed	Flush, Recessed
Contact Material	Copper Alloy	Copper Alloy	Beryllium Copper	Copper Alloy	Copper Alloy
Contact Finish	Gold	Gold	Gold	Gold	Gold
Height Above Board	0.091" (2.30mm)	0.091" (2.30mm)	0.104" (2.65mm)	0.061" (1.55mm)	0.061" (1.55mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination Style	Gull Wing	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	0.050" (1.27mm), Half
Washable	Yes	Yes	Yes	Yes	No
Operating Temperature	-30°C ~ 85°C	-30°C ~ 85°C	-55°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Body Material	Polyphenylene Sulfide (PPS)	Polyphenylene Sulfide (PPS)	Not Specified	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Length	0.144" (3.67mm)	0.144" (3.67mm)	0.146" (3.71mm)	0.148" (3.77mm)	0.148" (3.77mm)
Mechanical Life	1,000 Cycles	1,000 Cycles	Not Specified	1,000 Cycles	1,000 Cycles
Electrical Life	1,000 Cycles	1,000 Cycles	1,000 Cycles	Not Specified	Not Specified
RoHS Status	RoHS Non-Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Not Applicable	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

1571983-1 (TE Connectivity ALCOSWITCH)

The 1571983-1 is the direct equivalent substitute for the GDH02S. This part maintains identical electrical specifications, physical dimensions, and operating temperature range. The 1571983-1 is classified as Active product status with ROHS3 compliance, providing a seamless transition from the obsolete GDH02S. This part is the preferred choice for applications requiring exact dimensional and electrical compatibility with minimal design modification.

218-2LPST (CTS Electrocomponents)

The 218-2LPST is a direct functional equivalent with identical electrical ratings and mounting characteristics. This part features an extended operating temperature range (-55°C to 85°C) compared to the GDH02S (-30°C to 85°C), making it suitable for applications requiring enhanced low-temperature performance. The 218-2LPST uses Beryllium Copper contacts and includes epoxy sealed terminals as an additional feature. Height above board is 0.104" (2.65mm) versus 0.091" (2.30mm) for the GDH02S. ROHS3 compliance is confirmed. This part is suitable for designs where the increased height and extended temperature range do not present constraints.

97R02ST (Grayhill Inc.)

The 97R02ST is a similar functional equivalent maintaining all critical electrical specifications. This part features a reduced height above board of 0.061" (1.55mm), which may be advantageous in space-constrained applications. The operating temperature range is -40°C to 85°C. Body material is Polyamide (PA) Nylon rather than PPS. Mechanical life is specified at 1,000 cycles. ROHS3 compliance is confirmed. This part is suitable for applications where reduced profile height is beneficial and the operating temperature range is acceptable.

97R02T (Grayhill Inc.)

The 97R02T is a similar functional equivalent with identical electrical specifications to the 97R02ST. This part differs in that it is not washable, whereas the GDH02S and other substitutes are washable. All other specifications including height (0.061"), operating temperature range (-40°C to 85°C), and body material (Polyamide PA Nylon) are identical to the 97R02ST. ROHS3 compliance is confirmed. This part is suitable for applications where washability is not required and reduced profile height is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the 1571983-1 be used as a direct replacement for the GDH02S without PCB layout modifications?

A: Yes. The 1571983-1 maintains identical pitch (0.050" / 1.27mm), height above board (0.091" / 2.30mm), length (0.144" / 3.67mm), and termination style (Gull Wing) as the GDH02S. No PCB layout modifications are required.

Q: What is the primary difference between the 218-2LPST and the GDH02S?

A: The 218-2LPST provides an extended operating temperature range (-55°C to 85°C versus -30°C to 85°C) and increased height above board (0.104" versus 0.091"). Contact material is Beryllium Copper rather than Copper Alloy. All electrical specifications remain equivalent.

Q: Why do the Grayhill 97R02ST and 97R02T parts have a lower profile?

A: The 97R02ST and 97R02T feature a height above board of 0.061" (1.55mm) compared to 0.091" (2.30mm) for the GDH02S. This reduced profile is a design characteristic of the Grayhill series and may be beneficial in applications with height constraints.

Q: Is washability a critical factor in selecting a substitute?

A: Washability depends on application requirements. The GDH02S, 1571983-1, 218-2LPST, and 97R02ST are all washable. The 97R02T is not washable. Select based on manufacturing process requirements.

Q: Are all substitute parts RoHS compliant?

A: The GDH02S is RoHS non-compliant. All substitute parts (1571983-1, 218-2LPST, 97R02ST, 97R02T) are ROHS3 compliant. This is a significant advantage for new designs and applications subject to RoHS regulations.

Q: What is the difference between Direct and Similar substitute classifications?

A: Direct substitutes (1571983-1, 218-2LPST) maintain all critical electrical and mechanical parameters with minimal dimensional variation. Similar substitutes (97R02ST, 97R02T) maintain all critical electrical parameters but have notable dimensional differences, specifically reduced height above board.

Q: Can the 97R02T be used in applications requiring washable components?

A: No. The 97R02T is not washable. If washability is required, select from the GDH02S, 1571983-1, 218-2LPST, or 97R02ST.

Q: What is the operating temperature range difference between substitutes?

A: The GDH02S operates from -30°C to 85°C. The 218-2LPST extends this to -55°C to 85°C. The Grayhill parts (97R02ST, 97R02T) operate from -40°C to 85°C. Select based on application thermal requirements.

Q: Are there any compliance or certification differences between the substitutes?

A: All parts maintain REACH Unaffected status and EAR99 ECCN classification. The primary compliance difference is RoHS status: the GDH02S is non-compliant, while all substitutes are ROHS3 compliant. MSL ratings are consistent across all parts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message