DG417DY Equivalent & Substitute Parts

Part Overview

The DG417DY is a single-circuit SPST-NC (Normally Closed) analog switch manufactured by Vishay Siliconix, housed in an 8-SOIC surface mount package. This interface component operates with dual supply voltages (±15V) and features a maximum on-state resistance of 35Ohm, making it suitable for signal routing and switching applications in analog circuits.

The DG417DY is classified as obsolete. Locating equivalent or substitute parts is necessary to support ongoing production, maintenance, or redesign efforts where this component is specified in existing designs.

Key Parameters

Parameter	Value
Switch Circuit Type	SPST - NC (Single Pole Single Throw - Normally Closed)
Multiplexer/Demultiplexer Circuit	1:1
Number of Circuits	1
On-State Resistance (Max)	35Ohm
Voltage - Supply, Single (V+)	12V
Voltage - Supply, Dual (V±)	±15V
Switch Time (Ton, Toff) (Max)	175ns, 145ns
Charge Injection	60pC
Channel Capacitance (CS(off), CD(off))	8pF, 8pF
Current - Leakage (IS(off)) (Max)	250pA
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DG417DY is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Switch circuit topology: SPST - NC
Multiplexer configuration: 1:1
On-state resistance: 35Ohm maximum
Supply voltage compatibility: ±15V dual supply operation
Package type: 8-SOIC surface mount
Leakage current: 250pA maximum
Operating temperature range: -40°C to 85°C minimum

Substitute Categories:

Category 1 - Direct Parametric Equivalents (Vishay Siliconix DG417 Series) Parts matching all electrical specifications with identical or superior performance characteristics and active product status.

Category 2 - Manufacturer Recommended Alternatives (Analog Devices ADG417 Series) Parts from alternative manufacturers meeting or exceeding all critical electrical parameters with active product status and modern compliance certifications.

Category 3 - Extended Range Alternatives (DG417CY+, DG417CY+T, MAX317 Series) Parts with enhanced specifications in charge injection, crosstalk, and channel-to-channel matching, suitable for applications requiring improved performance margins.

Parameter Comparison

Part Number	Manufacturer	Product Status	On-State Resistance (Max)	Voltage - Supply, Dual (V±)	Switch Time Ton/Toff (Max)	Charge Injection	Channel Capacitance (CS/CD)	Leakage Current (Max)	Operating Temperature	RoHS Status	Packaging
DG417DY	Vishay Siliconix	Obsolete	35Ohm	±15V	175ns / 145ns	60pC	8pF / 8pF	250pA	-40°C ~ 85°C	RoHS non-compliant	8-SOIC Tube
DG417DY-E3	Vishay Siliconix	Active	35Ohm	±15V	175ns / 145ns	60pC	8pF / 8pF	250pA	-40°C ~ 85°C	ROHS3 Compliant	8-SOIC Tube
ADG417BRZ	Analog Devices Inc.	Active	35Ohm	±15V	160ns / 100ns	7pC	6pF / 6pF	250pA	-40°C ~ 85°C	ROHS3 Compliant	8-SOIC Tube
ADG417BRZ-REEL	Analog Devices Inc.	Active	35Ohm	±15V	160ns / 100ns	7pC	6pF / 6pF	250pA	-40°C ~ 85°C	ROHS3 Compliant	8-SOIC Cut Tape & Digi-Reel
DG417CY+	Analog Devices Inc./Maxim Integrated	Active	35Ohm	±4.5V ~ 20V	175ns / 145ns	3pC	8pF / 8pF	250pA	0°C ~ 70°C	ROHS3 Compliant	8-SOIC Tube
DG417CY+T	Analog Devices Inc./Maxim Integrated	Active	35Ohm	±4.5V ~ 20V	175ns / 145ns	3pC	8pF / 8pF	250pA	0°C ~ 70°C	ROHS3 Compliant	8-SOIC Tape & Reel
DG417DY+	Analog Devices Inc./Maxim Integrated	Active	35Ohm	±4.5V ~ 20V	175ns / 145ns	3pC	8pF / 8pF	250pA	-40°C ~ 85°C	ROHS3 Compliant	8-SOIC Tube
MAX317CSA+	Analog Devices Inc./Maxim Integrated	Active	35Ohm	±4.5V ~ 20V	175ns / 145ns	3pC	8pF / 8pF	250pA	0°C ~ 70°C	ROHS3 Compliant	8-SOIC Tube
MAX317ESA+	Analog Devices Inc./Maxim Integrated	Active	35Ohm	±4.5V ~ 20V	175ns / 145ns	3pC	8pF / 8pF	250pA	-40°C ~ 85°C	ROHS3 Compliant	8-SOIC Tube

Engineering Selection Recommendations

For Direct Replacement (Preferred): DG417DY-E3 is the primary substitute. It maintains identical electrical specifications and package configuration while offering active product status and ROHS3 compliance. This part is the most direct path for designs currently using the obsolete DG417DY.

For Enhanced Performance with Extended Temperature Range: DG417DY+ or MAX317ESA+ are suitable when the full -40°C to 85°C operating temperature range is required. Both parts offer superior charge injection characteristics (3pC vs. 60pC) and improved channel-to-channel matching, with ROHS3 compliance and active product status.

For Improved Switching Performance: ADG417BRZ or ADG417BRZ-REEL provide faster switching times (160ns/100ns vs. 175ns/145ns) and lower charge injection (7pC), with the REEL variant offering tape and reel packaging for high-volume production. Both maintain the full -40°C to 85°C temperature range and ROHS3 compliance.

For Standard Industrial Applications: MAX317CSA+ or DG417CY+ are acceptable alternatives when operating temperature is limited to 0°C to 70°C. These parts feature superior charge injection performance and are suitable for non-extended-temperature applications.

Compliance Consideration: All recommended substitutes are ROHS3 compliant, addressing the non-compliance status of the original DG417DY. Selection should account for supply voltage requirements, as some alternatives operate within ±4.5V to 20V rather than the fixed ±15V specification.

Frequently Asked Questions (FAQ)

Q: Can DG417DY-E3 be used as a direct drop-in replacement for DG417DY? A: Yes. DG417DY-E3 maintains identical electrical specifications, on-state resistance, supply voltage requirements, and 8-SOIC package configuration. The primary difference is active product status and ROHS3 compliance. Pin-to-pin compatibility is confirmed.

Q: What is the difference between ADG417BRZ and ADG417BRZ-REEL? A: Both parts are electrically identical. ADG417BRZ is supplied in tube packaging, while ADG417BRZ-REEL is supplied in cut tape and Digi-Reel format. Selection depends on production volume and assembly line requirements.

Q: Are DG417CY+ and DG417DY+ interchangeable? A: Both parts share identical electrical specifications and 8-SOIC packaging. The key difference is operating temperature range: DG417CY+ operates 0°C to 70°C, while DG417DY+ operates -40°C to 85°C. Selection depends on application temperature requirements.

Q: Why do some substitutes specify ±4.5V to 20V instead of ±15V? A: These parts feature wider supply voltage ranges that encompass the ±15V requirement. A ±4.5V to 20V rated part can operate at ±15V without limitation. The wider range provides design flexibility for applications with varying supply voltages.

Q: What is the significance of charge injection differences (60pC vs. 3pC)? A: Charge injection affects signal accuracy in precision analog switching applications. Lower charge injection (3pC in newer parts) results in reduced signal distortion and improved performance in sensitive measurement circuits. The DG417DY's 60pC specification is acceptable for standard switching applications but may be limiting in precision instrumentation.

Q: Is RoHS compliance mandatory for substitution? A: RoHS compliance is a regulatory requirement in many markets. All recommended substitutes are ROHS3 compliant, addressing the non-compliance status of the original DG417DY. Verify compliance requirements for your specific application and market.

Q: Can MAX317 series parts replace DG417 series parts? A: Yes, within specified operating temperature ranges. MAX317CSA+ and MAX317ESA+ meet all critical electrical parameters and package requirements. MAX317ESA+ is preferred when the full -40°C to 85°C range is required.

Q: What packaging options are available for high-volume production? A: ADG417BRZ-REEL and DG417CY+T offer tape and reel packaging suitable for automated assembly. DG417DY-E3, ADG417BRZ, DG417CY+, DG417DY+, MAX317CSA+, and MAX317ESA+ are available in tube packaging for lower-volume applications.

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