DG201BAK/883 Equivalent & Substitute Parts

Part Overview

The DG201BAK/883 is a 4-circuit SPST-NC (Single Pole Single Throw - Normally Closed) analog switch IC manufactured by Vishay Siliconix in a 16-CERDIP package. This component functions as a precision electronic switch with low on-state resistance of 85Ohm, designed for signal routing and multiplexing applications in analog circuits. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for new production runs and system maintenance.

Key Parameters

Parameter	Value
Manufacturer Part Number	DG201BAK/883
Manufacturer	Vishay Siliconix
Product Status	Obsolete
Switch Circuit Type	SPST - NC
Number of Circuits	4
On-State Resistance (Max)	85Ohm
Multiplexer/Demultiplexer Circuit	1:1
Voltage - Supply, Dual (V±)	±4.5V ~ 22V
Operating Temperature Range	-55°C ~ 125°C
Package / Case	16-CDIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DG201BAK/883 is determined by the following critical parameters:

Switch Architecture: SPST-NC topology with 4 independent circuits
Multiplexer Configuration: 1:1 circuit ratio
Package Compatibility: 16-CDIP through-hole form factor (0.300", 7.62mm)
Supply Voltage Range: Dual supply operation (±4.5V ~ 22V minimum requirement)
Operating Temperature: -55°C ~ 125°C range
Base Product Series: DG201 family designation

The DG201AAK/883B qualifies as a manufacturer-recommended substitute based on matching switch circuit topology (SPST-NC), circuit count (4), multiplexer configuration (1:1), package type (16-CDIP), and operating temperature range. Both parts share the same base product number (DG201) and are designed for identical functional applications within analog switching and signal routing.

Parameter Comparison

Parameter	DG201BAK/883 (Main Part)	DG201AAK/883B (Substitute)
Manufacturer	Vishay Siliconix	Analog Devices Inc./Maxim Integrated
Product Status	Obsolete	Active
Switch Circuit	SPST - NC	SPST - NC
Number of Circuits	4	4
Multiplexer/Demultiplexer Circuit	1:1	1:1
On-State Resistance (Max)	85Ohm	175Ohm
Channel-to-Channel Matching (ΔRon)	2Ohm	Not specified
Voltage - Supply, Dual (V±)	±4.5V ~ 22V	±4.5V ~ 18V
Switch Time - Ton (Max)	300ns	600ns
Switch Time - Toff (Max)	200ns	450ns
Charge Injection	1pC	20pC
Channel Capacitance (CS(off), CD(off))	5pF, 5pF	5pF, 5pF
Current - Leakage (IS(off)) (Max)	500pA	1nA
Crosstalk	-95dB @ 100kHz	-90dB @ 100kHz
Operating Temperature	-55°C ~ 125°C (TA)	-55°C ~ 125°C (TA)
Package / Case	16-CDIP (0.300", 7.62mm)	16-CDIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole
RoHS Status	RoHS non-compliant	RoHS non-compliant

Engineering Selection Recommendations

The DG201AAK/883B is the manufacturer-recommended substitute for the obsolete DG201BAK/883. Both parts maintain identical compliance profiles (RoHS non-compliant, REACH Unaffected, ECCN EAR99) and share the same moisture sensitivity level (MSL 1 - Unlimited).

The primary design consideration is the increased on-state resistance of the DG201AAK/883B (175Ohm versus 85Ohm). Applications requiring minimal signal attenuation or operating at the lower end of the supply voltage range should evaluate whether the higher resistance introduces unacceptable signal loss or impedance mismatch. The substitute part also exhibits longer switch times (600ns/450ns versus 300ns/200ns) and higher charge injection (20pC versus 1pC), which may impact high-frequency switching applications or precision timing-critical circuits.

The DG201AAK/883B offers the advantage of active product status, ensuring continued availability and manufacturing support from Analog Devices Inc./Maxim Integrated, whereas the DG201BAK/883 is no longer produced.

Frequently Asked Questions (FAQ)

Q: Can the DG201AAK/883B be used as a direct pin-for-pin replacement for the DG201BAK/883?

A: Yes. Both parts use the 16-CDIP package with identical pinout and through-hole mounting. No PCB layout modifications are required for physical substitution.

Q: What are the key electrical differences between these parts?

A: The DG201AAK/883B has higher on-state resistance (175Ohm vs. 85Ohm), longer switch times (600ns/450ns vs. 300ns/200ns), and higher charge injection (20pC vs. 1pC). The supply voltage range is slightly narrower (±4.5V ~ 18V vs. ±4.5V ~ 22V).

Q: Will the higher on-state resistance of the substitute affect my circuit?

A: On-state resistance affects signal attenuation and power dissipation. Applications with high impedance loads or operating at lower supply voltages may experience measurable signal loss. Circuit simulation or bench testing is appropriate to confirm performance within your specific application parameters.

Q: Are both parts compliant with the same regulatory standards?

A: Yes. Both the DG201BAK/883 and DG201AAK/883B share identical RoHS status (non-compliant), REACH status (Unaffected), and ECCN classification (EAR99).

Q: Why is the DG201BAK/883 obsolete?

A: The DG201BAK/883 has been discontinued by Vishay Siliconix. The DG201AAK/883B from Analog Devices Inc./Maxim Integrated is the active equivalent maintained for ongoing production and support.

Q: Can I use the DG201AAK/883B in applications requiring the faster switching speed of the original part?

A: The substitute has slower switching characteristics (600ns/450ns vs. 300ns/200ns). Applications with strict timing requirements should evaluate whether the increased switch time introduces unacceptable delays or timing violations in your circuit design.

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