PI04190 DIP Switch SPST Piano Actuator Equivalent & Substitute Parts

Part Overview

The PI04190 is an APEM Inc. DIP switch featuring a 4-position SPST configuration with piano actuator, rated for 25mA at 24VDC. This component is designed for through-hole, right-angle mounting applications requiring sealed, washable switch functionality. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical ratings, mechanical configurations, and environmental specifications align with the original design requirements, enabling direct replacement in circuit applications without functional degradation.

Key Parameters

Parameter	Value
Circuit Configuration	SPST (Single Pole Single Throw)
Number of Positions	4
Current Rating	25mA
Voltage Rating	24VDC
Actuator Type	Piano, Raised Level
Mounting Configuration	Through Hole, Right Angle
Pitch	0.100" (2.54mm)
Contact Material	Copper Alloy with Gold Finish
Operating Temperature Range	-40°C to 85°C
Washable	Yes
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the PI04190 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence: Circuit type (SPST), position count (4), current rating (25mA minimum), and voltage rating (24VDC minimum) must match or exceed the original specification.

Mechanical Compatibility: Actuator type (piano), mounting method (through-hole, right-angle), pitch spacing (0.100"), and termination style (PC pin) must be identical to ensure PCB footprint compatibility.

Environmental Compliance: Operating temperature range must encompass or exceed -40°C to 85°C. RoHS3 compliance and MSL 1 rating are required for regulatory and manufacturing process alignment.

Contact Specifications: Copper alloy with gold finish contact material ensures equivalent electrical performance and corrosion resistance.

The substitute part 1571999-6 (TE Connectivity ALCOSWITCH) satisfies all substitution criteria within these defined parameters.

Parameter Comparison

Parameter	PI04190 (APEM Inc.)	1571999-6 (TE Connectivity)	Compatibility
Circuit Configuration	SPST	SPST	Equivalent
Number of Positions	4	4	Equivalent
Current Rating (Amps)	25mA	25mA	Equivalent
Voltage Rating	24VDC	24VDC	Equivalent
Actuator Type	Piano, Raised	Piano, Raised	Equivalent
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Equivalent
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Equivalent
Contact Material	Copper Alloy	Copper Alloy	Equivalent
Contact Finish	Gold	Gold	Equivalent
Termination Style	PC Pin	PC Pin	Equivalent
Washable	Yes	Yes	Equivalent
Operating Temperature	-40°C to 85°C	-30°C to 85°C	1571999-6 range narrower at low end
Mechanical Life	500 Cycles	1,000 Cycles	1571999-6 exceeds specification
Electrical Life	200 Cycles	1,000 Cycles	1571999-6 exceeds specification
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
MSL Rating	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

Both PI04190 and 1571999-6 maintain Active product status with full ROHS3 compliance and unlimited moisture sensitivity rating, confirming regulatory alignment for current and future production environments.

The PI04190 operates across -40°C to 85°C, while the 1571999-6 operates across -30°C to 85°C. Selection between these parts depends on application requirements at temperatures below -30°C. If the application does not require operation below -30°C, the 1571999-6 is functionally equivalent.

The 1571999-6 demonstrates superior mechanical life (1,000 cycles versus 500 cycles) and electrical life (1,000 cycles versus 200 cycles), providing extended operational durability in high-cycle applications. This represents a performance enhancement rather than a limitation.

Both parts share identical electrical ratings, actuator configuration, mounting geometry, and contact specifications, ensuring direct PCB footprint compatibility and circuit-level interchangeability within the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can 1571999-6 directly replace PI04190 in all applications?

A: Direct replacement is valid for applications operating between -30°C and 85°C. Applications requiring operation below -30°C must retain the PI04190 due to its extended low-temperature rating to -40°C.

Q: What are the key differences between these parts?

A: The primary differences are operating temperature range (PI04190: -40°C to 85°C; 1571999-6: -30°C to 85°C), mechanical life (PI04190: 500 cycles; 1571999-6: 1,000 cycles), and electrical life (PI04190: 200 cycles; 1571999-6: 1,000 cycles). All electrical and mechanical interface parameters are identical.

Q: Are the PCB footprints identical?

A: Yes. Both parts feature 0.100" (2.54mm) pitch, through-hole right-angle mounting, and PC pin termination, ensuring identical PCB footprint compatibility.

Q: Do both parts meet current compliance requirements?

A: Yes. Both PI04190 and 1571999-6 are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating, meeting current regulatory and manufacturing process requirements.

Q: Which part should be selected for new designs?

A: Selection depends solely on application operating temperature requirements. For temperatures at or above -30°C, either part is suitable. The 1571999-6 offers extended mechanical and electrical life cycles. For temperatures below -30°C, the PI04190 is required.

Q: Are there packaging differences?

A: PI04190 packaging is specified as "-" (not detailed in provided data). 1571999-6 is supplied in Tube packaging. Verify packaging requirements with procurement specifications before final selection.

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