DG186AP/883 Equivalent & Substitute Parts

Part Overview

The DG186AP/883 is a single-circuit SPDT (Single Pole Double Throw) analog switch manufactured by Vishay Siliconix, designed for 2:1 multiplexing applications with a maximum on-state resistance of 10Ohm. This component operates with dual supply voltages (±15V) and features switching times of 400ns (Ton) and 200ns (Toff). The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Switch Circuit Type	SPDT
Multiplexer/Demultiplexer Configuration	2:1
Number of Circuits	1
On-State Resistance (Max)	10Ohm
Dual Supply Voltage (V±)	±15V
Switch Time - Ton (Max)	400ns
Switch Time - Toff (Max)	200ns
Channel Capacitance - CS(off)	21pF
Channel Capacitance - CD(off)	17pF
Leakage Current - IS(off) (Max)	10nA
Operating Temperature Range	-55°C to 125°C
Package Type	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the DG186AP/883 is determined by the following critical parameters:

Functional Equivalence Criteria:

Switch circuit topology (SPDT)
Multiplexer configuration (2:1)
Single circuit count
Through-hole mounting compatibility
14-pin DIP package footprint

Electrical Performance Boundaries:

On-state resistance must not exceed application requirements (DG186AP/883: 10Ohm maximum)
Dual supply voltage range must encompass ±15V operation
Switch timing characteristics (Ton, Toff) must meet or exceed performance specifications
Leakage current specifications must be compatible with signal integrity requirements

The identified substitute parts (DG301AAK/883B and DG301ACJ+) maintain SPDT 2:1 switching topology and through-hole DIP packaging. However, both substitutes feature higher on-state resistance (50Ohm) and operate within a narrower dual supply voltage range (±5V to ±18V). These differences require evaluation against specific application constraints.

Parameter Comparison

Parameter	DG186AP/883 (Main)	DG301AAK/883B	DG301ACJ+
Manufacturer	Vishay Siliconix	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit	SPDT	SPDT	SPDT
Multiplexer Configuration	2:1	2:1	2:1
Number of Circuits	1	1	1
On-State Resistance (Max)	10Ohm	50Ohm	50Ohm
Dual Supply Voltage (V±)	±15V	±5V to ±18V	±5V to ±18V
Switch Time - Ton (Max)	400ns	300ns	300ns
Switch Time - Toff (Max)	200ns	250ns	250ns
Channel Capacitance - CS(off)	21pF	14pF	14pF
Channel Capacitance - CD(off)	17pF	14pF	14pF
Leakage Current - IS(off) (Max)	10nA	1nA	5nA
Crosstalk	Not specified	-74dB @ 500kHz	-74dB @ 500kHz
Charge Injection	Not specified	12pC	12pC
Operating Temperature Range	-55°C to 125°C	-55°C to 125°C	0°C to 70°C
Package Type	14-DIP	14-CDIP	14-DIP (14-PDIP)
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	Non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

DG301ACJ+ (Primary Substitute): This part is recommended as the primary substitute for new designs and system upgrades. It maintains active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The 14-DIP package provides direct footprint compatibility with the original DG186AP/883. The ±5V to ±18V supply range encompasses the ±15V requirement of the original design. However, the 50Ohm on-state resistance represents a five-fold increase from the DG186AP/883 specification; applications with impedance-sensitive signal paths require circuit-level analysis to confirm compatibility. The operating temperature range (0°C to 70°C) is narrower than the original (-55°C to 125°C), limiting use in extended-temperature environments.

DG301AAK/883B (Secondary Substitute): This part offers identical electrical performance to the DG301ACJ+ with extended operating temperature range (-55°C to 125°C), matching the original specification. The 14-CDIP package maintains mechanical compatibility with through-hole mounting. However, the part remains non-compliant with RoHS3 standards. Selection of this variant is appropriate only when extended temperature operation is mandatory and RoHS compliance is not a design requirement.

Frequently Asked Questions (FAQ)

Q: Can the DG301ACJ+ directly replace the DG186AP/883 in existing designs?

A: Mechanical and functional compatibility exists for SPDT 2:1 switching applications. The 14-DIP package footprint is identical. However, the 50Ohm on-state resistance of the DG301ACJ+ is significantly higher than the 10Ohm specification of the DG186AP/883. Applications where switch resistance directly affects signal amplitude, noise performance, or power dissipation require circuit analysis to confirm acceptable performance margins.

Q: What is the difference between the DG301AAK/883B and DG301ACJ+ packages?

A: The DG301AAK/883B uses a 14-CDIP (ceramic DIP) package, while the DG301ACJ+ uses a 14-DIP (plastic DIP, designated 14-PDIP). Both are through-hole mounted with identical 0.300" (7.62mm) pitch. The DG301AAK/883B supports the full -55°C to 125°C temperature range; the DG301ACJ+ is limited to 0°C to 70°C. Ceramic packages (CDIP) typically offer superior thermal and environmental performance compared to plastic packages (PDIP).

Q: Is the DG301ACJ+ suitable for applications requiring -55°C operation?

A: No. The DG301ACJ+ operating temperature range is 0°C to 70°C. For applications requiring -55°C operation, the DG301AAK/883B must be selected, as it supports -55°C to 125°C.

Q: How does the increased on-state resistance affect circuit performance?

A: The DG301 series parts feature 50Ohm on-state resistance compared to the DG186AP/883 specification of 10Ohm. In high-impedance signal paths or applications with low source impedance, this difference may be negligible. In low-impedance circuits or applications where switch resistance contributes significantly to signal attenuation or power loss, detailed circuit analysis is required to confirm acceptable performance.

Q: Are the DG301 substitutes RoHS compliant?

A: The DG301ACJ+ is ROHS3 compliant. The DG301AAK/883B is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the DG301ACJ+ is the appropriate selection.

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