DG412LDY Equivalent & Substitute Parts

Part Overview

The DG412LDY is a 4-circuit SPST-NO IC switch manufactured by Vishay Siliconix in 16-SOIC surface mount packaging. This part features a 17Ohm on-state resistance and operates across 2.7V to 12V single supply or ±3V to ±6V dual supply configurations. The DG412LDY is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts maintain the same functional architecture (4-circuit 1:1 multiplexer configuration) while offering improved performance characteristics, extended supply voltage ranges, and active product status from current manufacturers.

Key Parameters

Parameter	DG412LDY
Switch Circuit Type	SPST - NO
Number of Circuits	4
Multiplexer Configuration	1:1
On-State Resistance (Max)	17Ohm
Supply Voltage Single (V+)	2.7V ~ 12V
Supply Voltage Dual (V±)	±3V ~ 6V
Switch Time Ton/Toff (Max)	19ns / 12ns
-3dB Bandwidth	280MHz
Charge Injection	5pC
Package / Case	16-SOIC (0.154", 3.90mm Width)
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the DG412LDY is determined by the following mandatory criteria:

Functional Requirements:

Switch circuit type: SPST - NO
Number of circuits: 4
Multiplexer configuration: 1:1
Package type: 16-SOIC surface mount

Electrical Compatibility Considerations:

On-state resistance: Substitute parts may have higher resistance values (17Ohm baseline) while maintaining functional equivalence
Supply voltage ranges: Substitute parts must support overlapping or extended voltage operating ranges
Charge injection and capacitance: Electrical characteristics that influence signal integrity
Leakage current: Maximum leakage specifications

Availability and Compliance:

Product status: Active parts are preferred over obsolete classifications
RoHS compliance: ROHS3-compliant substitutes are available
Packaging options: Tube and Tape & Reel configurations support different assembly workflows

The DG412 base product family encompasses multiple manufacturers and variants. Substitute parts listed below maintain the core 4-circuit SPST-NO architecture while offering improved electrical performance, extended operating ranges, and current manufacturing support.

Parameter Comparison

Parameter	DG412LDY	DG412CY+	DG412CY+T	DG412DY+	DG412DY+T	DG412DYZ	DG412DYZ-T	MAX4605CSE+
Manufacturer	Vishay Siliconix	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Renesas Electronics Corporation	Renesas Electronics Corporation	Analog Devices Inc./Maxim Integrated
Switch Circuit	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO	SPST - NO
Number of Circuits	4	4	4	4	4	4	4	4
Multiplexer Configuration	1:1	1:1	1:1	1:1	1:1	1:1	1:1	1:1
On-State Resistance (Max)	17Ohm	45Ohm	45Ohm	45Ohm	45Ohm	35Ohm	35Ohm	4Ohm
Supply Voltage Single (V+)	2.7V ~ 12V	10V ~ 30V	10V ~ 30V	10V ~ 30V	10V ~ 30V	5V ~ 44V	5V ~ 44V	4.5V ~ 36V
Supply Voltage Dual (V±)	±3V ~ 6V	±4.5V ~ 20V	±4.5V ~ 20V	±4.5V ~ 20V	±4.5V ~ 20V	±5V ~ 20V	±5V ~ 20V	±4.5V ~ 20V
Switch Time Ton/Toff (Max)	19ns / 12ns	175ns / 145ns	175ns / 145ns	175ns / 145ns	175ns / 145ns	175ns / 145ns	175ns / 145ns	120ns / 130ns
Charge Injection	5pC	5pC	5pC	5pC	5pC	5pC	5pC	225pC
Channel Capacitance (CS(off), CD(off))	5pF, 6pF	9pF, 9pF	9pF, 9pF	9pF, 9pF	9pF, 9pF	9pF, 9pF	9pF, 9pF	34pF, 34pF
Current - Leakage (IS(off)) (Max)	250pA	250pA	250pA	250pA	250pA	100pA	100pA	500pA
Crosstalk	-95dB @ 1MHz	-85dB @ 1MHz	-85dB @ 1MHz	-85dB @ 1MHz	-85dB @ 1MHz	-85dB @ 1MHz	-85dB @ 1MHz	-60dB @ 1MHz
Operating Temperature	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C
Package / Case	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC
Packaging Format	-	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	2 (1 Year)	1 (Unlimited)
Inventory Status	5504 Pcs New Original In Stock	2095 Pcs New Original In Stock	781 Pcs New Original In Stock	1104 Pcs New Original In Stock	7102 Pcs New Original In Stock	4242 Pcs New Original In Stock	3700 Pcs New Original In Stock	1168 Pcs New Original In Stock

Engineering Selection Recommendations

For Extended Supply Voltage Range Applications: DG412DYZ and DG412DYZ-T (Renesas) support 5V to 44V single supply operation, providing the widest voltage range among active substitutes. These parts maintain -40°C to 85°C operating temperature and ROHS3 compliance. DG412DYZ offers lower leakage current (100pA maximum) compared to the original DG412LDY (250pA maximum).

For Reduced On-State Resistance: MAX4605CSE+ delivers 4Ohm on-state resistance with 200mOhm channel-to-channel matching, representing the lowest resistance option. This part supports 4.5V to 36V single supply and ±4.5V to ±20V dual supply. Operating temperature range is 0°C to 70°C, requiring verification for extended temperature applications.

For Balanced Performance and Availability: DG412DY+T (Tape & Reel format) and DG412DY+ (Tube format) from Analog Devices provide 45Ohm on-state resistance with extended supply ranges (10V to 30V single, ±4.5V to ±20V dual). Both maintain -40°C to 85°C operating temperature, ROHS3 compliance, and MSL 1 rating. DG412DY+T offers highest inventory availability (7102 pieces).

For Compliance-Critical Designs: All substitute parts listed are ROHS3 compliant, addressing regulatory requirements that the obsolete DG412LDY cannot meet. Moisture sensitivity levels range from MSL 1 (unlimited shelf life) to MSL 2 (1-year shelf life), with DG412DYZ and DG412DYZ-T requiring controlled storage conditions.

Packaging Considerations: Tube packaging (DG412CY+, DG412DY+, DG412DYZ, MAX4605CSE+) suits manual assembly and prototyping workflows. Tape & Reel formats (DG412CY+T, DG412DY+T, DG412DYZ-T) are optimized for automated pick-and-place production environments.

Frequently Asked Questions (FAQ)

Q: Can DG412LDY be directly replaced with any of these substitute parts?

A: Direct replacement requires matching the 4-circuit SPST-NO configuration and 16-SOIC package, which all listed substitutes provide. However, electrical parameter differences—particularly on-state resistance, supply voltage ranges, and operating temperature—must be evaluated against specific application requirements. The DG412DY+ and DG412DY+T maintain the closest operating temperature range (-40°C to 85°C) to the original part.

Q: What is the primary reason for substitution?

A: The DG412LDY is classified as obsolete and RoHS non-compliant. All substitute parts are active products with ROHS3 compliance, ensuring long-term availability and regulatory alignment for new designs and production continuity.

Q: How do on-state resistance differences affect circuit performance?

A: On-state resistance determines signal attenuation and power dissipation in switching applications. The DG412LDY specifies 17Ohm maximum. Substitutes range from 4Ohm (MAX4605CSE+) to 45Ohm (DG412CY+, DG412DY+). Lower resistance reduces signal loss and heat generation; higher resistance may require circuit redesign in bandwidth-critical or low-impedance applications.

Q: Which substitute supports the widest supply voltage range?

A: DG412DYZ and DG412DYZ-T support 5V to 44V single supply and ±5V to ±20V dual supply, providing the broadest voltage operating window among all listed substitutes.

Q: Are there temperature range limitations with any substitutes?

A: DG412CY+, DG412CY+T, and MAX4605CSE+ operate from 0°C to 70°C, which is narrower than the original DG412LDY (-40°C to 85°C). DG412DY+, DG412DY+T, DG412DYZ, and DG412DYZ-T maintain the full -40°C to 85°C range.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging contains loose components suitable for manual handling and small-volume assembly. Tape & Reel format provides components on continuous carrier tape for automated pick-and-place equipment, supporting high-volume production workflows. Both formats are available for most substitute parts.

Q: Do all substitutes have the same moisture sensitivity rating?

A: No. Most substitutes carry MSL 1 (unlimited shelf life). DG412DYZ and DG412DYZ-T are rated MSL 2, requiring storage below 30°C and 60% relative humidity with a 1-year shelf life limit after bag opening.

Q: Which substitute offers the lowest leakage current?

A: DG412DYZ and DG412DYZ-T specify 100pA maximum leakage current, compared to 250pA for the original DG412LDY and most other substitutes. MAX4605CSE+ specifies 500pA maximum leakage.

Q: Can MAX4605CSE+ be used in all applications where DG412LDY was used?

A: MAX4605CSE+ provides superior on-state resistance (4Ohm) and faster switching times (120ns/130ns). However, it operates only from 0°C to 70°C (versus -40°C to 85°C for DG412LDY), has higher charge injection (225pC versus 5pC), and exhibits lower crosstalk isolation (-60dB versus -95dB). Application-specific verification is required.

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