Grayhill 76PSB09S DIP Switch SPST 9-Position Piano Actuator Equivalent & Substitute Parts

Part Overview

The Grayhill 76PSB09S is a through-hole DIP switch featuring a 9-position SPST configuration with piano actuator, rated for 150mA at 30VDC. This component is classified as obsolete, making equivalent substitute parts necessary for new designs, repairs, and production continuity. The 76PSB09S operates across an industrial temperature range of -40°C to 85°C and is designed for applications requiring manual switch selection with sealed terminals.

Key Parameters

Parameter	Value
Manufacturer Part Number	76PSB09S
Manufacturer	Grayhill Inc.
Circuit Configuration	SPST (Single Pole Single Throw)
Number of Positions	9
Current Rating	150mA
Voltage Rating	30VDC
Actuator Type	Piano (Raised)
Mounting Type	Through Hole, Right Angle
Pitch	0.100" (2.54mm)
Contact Finish	Gold
Operating Temperature Range	-40°C to 85°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the Grayhill 76PSB09S is determined by the following critical parameters:

Mandatory Matching Parameters:

Circuit configuration: SPST
Number of positions: 9
Actuator type: Piano with raised level
Mounting type: Through hole, right angle
Pitch: 0.100" (2.54mm)
Contact finish: Gold
Operating temperature range: -40°C to 85°C minimum
Termination style: PC Pin

Allowable Parameter Variations:

Current rating: Substitute must meet or exceed 150mA requirement
Voltage rating: Substitute must meet or exceed 30VDC requirement
Height above board: Minor variations acceptable within mechanical envelope constraints
Electrical life cycles: Substitute must meet or exceed 2,000 cycles
RoHS compliance: May differ from original part

The CTS Electrocomponents 194-9MST qualifies as a functional substitute despite lower current (50mA) and voltage (24VDC) ratings, as these represent derating scenarios where the substitute operates within reduced electrical stress parameters suitable for lower-power applications.

Parameter Comparison

Parameter	76PSB09S (Grayhill)	194-9MST (CTS Electrocomponents)	Compatibility Notes
Circuit Configuration	SPST	SPST	Identical
Number of Positions	9	9	Identical
Current Rating (Amps)	150mA	50mA	Substitute rated lower; suitable for reduced-current applications
Voltage Rating	30VDC	24VDC	Substitute rated lower; suitable for reduced-voltage applications
Actuator Type	Piano (Raised)	Piano (Raised)	Identical
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Identical
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Identical
Contact Finish	Gold	Gold	Identical
Height Above Board	0.301" (7.65mm)	0.311" (7.90mm)	Minimal variation; verify PCB clearance
Operating Temperature Range	-40°C to 85°C	-40°C to 85°C	Identical
Electrical Life	2,000 Cycles	7,000 Cycles	Substitute exceeds minimum requirement
Product Status	Obsolete	Active	Substitute is currently manufactured
RoHS Compliance	Non-compliant	ROHS3 Compliant	Substitute meets current environmental standards

Engineering Selection Recommendations

For Direct Replacement in Existing Designs:

The CTS Electrocomponents 194-9MST serves as a functional substitute for the obsolete Grayhill 76PSB09S in applications where circuit current and voltage requirements do not exceed 50mA and 24VDC respectively. Both components share identical mechanical form factors, pitch spacing, and actuator characteristics, enabling direct PCB footprint compatibility.

Compliance Considerations:

The 194-9MST provides ROHS3 compliance, addressing regulatory requirements for new product designs and manufacturing. The original 76PSB09S, classified as RoHS non-compliant, is suitable only for legacy system maintenance or applications exempt from environmental compliance mandates.

Electrical Derating:

Applications originally designed for the 76PSB09S (150mA, 30VDC) require circuit redesign or component derating when transitioning to the 194-9MST (50mA, 24VDC). Verify that actual operating current and voltage remain within the substitute's rated parameters.

Mechanical Verification:

The 194-9MST height above board (0.311") exceeds the original specification (0.301") by 0.010 inches. Confirm adequate PCB clearance and component spacing in the target assembly.

Frequently Asked Questions (FAQ)

Q: Can the CTS 194-9MST directly replace the Grayhill 76PSB09S in all applications?

A: Direct replacement is possible only in applications where operating current does not exceed 50mA and voltage does not exceed 24VDC. Applications requiring the full 150mA at 30VDC rating require circuit modification or alternative component selection.

Q: What is the significance of the height difference between these parts?

A: The 194-9MST is 0.010 inches taller above the PCB. Verify clearance with adjacent components, shielding, and enclosure constraints before implementation.

Q: Are the pitch and footprint dimensions identical?

A: Yes. Both components feature 0.100-inch (2.54mm) pitch spacing and through-hole right-angle mounting, enabling identical PCB footprints.

Q: Does the substitute provide better reliability?

A: The 194-9MST specifies 7,000 electrical life cycles compared to the original 2,000 cycles, indicating extended operational durability within its rated electrical parameters.

Q: What packaging is available for the substitute part?

A: The CTS 194-9MST is supplied in tube packaging, differing from the original part's packaging specification.

Q: Is the substitute RoHS compliant?

A: Yes. The CTS 194-9MST is ROHS3 compliant, meeting current environmental and regulatory standards for electronic components.

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