Equivalent & Substitute Parts for 94HAC16

Part Overview

The 94HAC16 is a rotary DIP switch manufactured by Grayhill Inc., designed for hexadecimal complement applications requiring 16-position through-hole mounting. This component operates at 100mA and 50VDC with a sealed design suitable for tool-actuated environments. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar electrical and mechanical characteristics.

Key Parameters

Parameter	Value	Significance for Substitution
Circuit Type	Hexadecimal Complement	Defines encoding logic; must match for direct substitution
Number of Positions	16	Determines output resolution; critical for compatibility
Current Rating	100mA	Maximum load capacity; substitute must meet or exceed
Voltage Rating	50VDC	Maximum operating voltage; substitute must meet or exceed
Actuator Type	Rotary for Tool	Physical interface; must match for mechanical compatibility
Mounting Type	Through Hole	PCB integration method; must match for board compatibility
Pitch	0.100" (2.54mm)	Pin spacing; must match for footprint compatibility
Termination Style	PC Pin	Connection method; must match for assembly compatibility

Substitute Part Grouping Explanation

Substitution of the 94HAC16 is based on strict alignment of the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Circuit configuration must be hexadecimal complement with 16 positions
Mounting method must be through-hole with 0.100" (2.54mm) pitch
Actuator type must be rotary for tool operation
Termination must use PC pins

Electrical Compatibility Criteria:

Current rating of substitute must be sufficient for the application's maximum current draw
Voltage rating of substitute must be sufficient for the application's maximum voltage
Contact material and finish must support the intended electrical environment

The identified substitute part 1-1825007-1 meets all primary compatibility criteria. However, electrical parameter differences exist that must be evaluated against specific application requirements.

Parameter Comparison

Parameter	94HAC16 (Grayhill)	1-1825007-1 (TE Connectivity)	Compatibility Notes
Manufacturer	Grayhill Inc.	TE Connectivity ALCOSWITCH Switches	Different manufacturers
Circuit Type	Hexadecimal Complement	Hexadecimal Complement	Match
Number of Positions	16	16	Match
Current Rating	100mA	0.4VA	Substitute rated lower; application-dependent
Voltage Rating	50VDC	20VAC/DC	Substitute rated lower; application-dependent
Actuator Type	Rotary for Tool	Rotary for Tool	Match
Actuator Level	Flush, Recessed	Flush, Recessed	Match
Contact Material	Copper Alloy	Copper Alloy	Match
Contact Finish	Gold	Gold	Match
Height Above Board	0.225" (5.72mm)	0.256" (6.50mm)	Minor difference; verify clearance
Mounting Type	Through Hole	Through Hole	Match
Termination Style	PC Pin	PC Pin	Match
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Match
Washable	Yes	Yes	Match
Operating Temperature	-40°C ~ 85°C	-30°C ~ 85°C	Substitute has narrower range
Body Material	Plastic	Polyphenylene Sulfide (PPS)	Different materials; both suitable for DIP switches
Length	0.390" (9.91mm)	0.394" (10.00mm)	Negligible difference
Mechanical Life	10,000 Cycles	10,000 Steps	Match
Product Status	Obsolete	Active	Substitute is currently manufactured
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute meets current compliance
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Match

Engineering Selection Recommendations

Substitution Feasibility:

The 1-1825007-1 from TE Connectivity ALCOSWITCH Switches is mechanically and functionally compatible with the 94HAC16 for applications where electrical requirements do not exceed the substitute's ratings.

Critical Evaluation Points:

Electrical Ratings: The substitute part is rated at 0.4VA (20VAC/DC) compared to the original 100mA at 50VDC. Applications operating above 20V or requiring current approaching 100mA must be re-evaluated against the substitute's lower ratings.
Temperature Range: The substitute operates from -30°C to 85°C, compared to the original -40°C to 85°C. Applications requiring operation below -30°C are not suitable for this substitute.
Compliance Status: The substitute is ROHS3 compliant and currently in active production, providing supply chain continuity and regulatory alignment for new designs.
Physical Dimensions: Height above board differs by 0.031" (0.78mm). Verify clearance in applications with tight vertical constraints.
Availability: The substitute has 19,701 units in stock compared to 770 units of the original part, supporting volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1-1825007-1 directly replace the 94HAC16 in all applications?

A: Direct replacement is possible only when application electrical requirements do not exceed 20VAC/DC and 0.4VA. Applications requiring the full 50VDC and 100mA ratings of the original part require electrical redesign or alternative sourcing.

Q: What is the impact of the different body materials (Plastic vs. PPS)?

A: Polyphenylene Sulfide (PPS) used in the substitute provides superior chemical resistance and thermal stability compared to standard plastic. This represents an improvement for most industrial environments.

Q: Are the mechanical life specifications equivalent?

A: Both parts specify 10,000 cycles/steps of mechanical life, indicating equivalent durability for rotary actuation.

Q: Does the height difference affect PCB layout?

A: The 0.031" (0.78mm) height difference is minor but must be verified against board clearance requirements, particularly in applications with height constraints or conformal coating processes.

Q: Is the substitute suitable for new designs?

A: Yes. The substitute is in active production status with current RoHS3 compliance, making it suitable for new designs provided electrical requirements align with its ratings.

Q: What is the significance of the operating temperature range difference?

A: The substitute's -30°C lower limit is acceptable for most commercial and industrial applications. Only applications requiring operation below -30°C require alternative solutions.

Q: Are the pitch and termination specifications identical?

A: Yes. Both parts use 0.100" (2.54mm) pitch with PC pin termination, ensuring identical PCB footprint compatibility.

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