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DG417LDY-T1-E3 Equivalent & Substitute Parts
Part Overview
The DG417LDY-T1-E3 is a single-circuit SPST-NC (Normally Closed) analog switch manufactured by Vishay Siliconix, housed in an 8-SOIC surface mount package. This component features a 20Ω on-state resistance and operates across supply voltages of 2.7V to 12V (single supply) or ±3V to ±6V (dual supply). The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts maintain the same package footprint and core switching functionality while offering enhanced electrical performance characteristics and active product status.
Substiute Parts
Key Parameters
| Parameter | DG417LDY-T1-E3 |
|---|---|
| Manufacturer | Vishay Siliconix |
| Switch Circuit Type | SPST - NC |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 20Ω |
| Voltage - Supply, Single (V+) | 2.7V ~ 12V |
| Voltage - Supply, Dual (V±) | ±3V ~ 6V |
| Switch Time (Ton, Toff) (Max) | 43ns, 31ns |
| Charge Injection | 1pC |
| Channel Capacitance (CS(off), CD(off)) | 5pF |
| Current - Leakage (IS(off)) (Max) | 1nA |
| Crosstalk | -71dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DG417LDY-T1-E3 is determined by the following mandatory criteria:
Core Functional Requirements:
- Switch circuit type: SPST - NC
- Multiplexer/Demultiplexer circuit: 1:1
- Number of circuits: 1
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting type: Surface Mount
Electrical Compatibility Parameters:
- On-state resistance must not exceed the application tolerance (reference: 20Ω baseline)
- Supply voltage ranges must encompass or exceed the original specification (2.7V ~ 12V single supply minimum)
- Operating temperature range: -40°C ~ 85°C
- Leakage current and crosstalk performance must meet or exceed original specifications
Compliance & Certification:
- RoHS3 compliance required
- MSL rating: 1 (Unlimited)
All substitute parts listed below meet these criteria and are available in active product status, ensuring long-term supply chain viability.
Parameter Comparison
| Parameter | DG417LDY-T1-E3 | DG417LEDY-T1-GE3 | ADG417BRZ | ADG417BRZ-REEL | DG417CY+ | DG417CY+T | DG417DY+ | DG417LDY+ | DG417LDY+T |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Vishay Siliconix | Vishay Siliconix | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Switch Circuit Type | SPST - NC | SPST - NC | SPST - NC | SPST - NC | SPST - NC | SPST - NC | SPST - NC | SPST - NC | SPST - NC |
| Multiplexer/Demultiplexer Circuit | 1:1 | 1:1 | 1:1 | 1:1 | 1:1 | 1:1 | 1:1 | 1:1 | 1:1 |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| On-State Resistance (Max) | 20Ω | Not specified | 35Ω | 35Ω | 35Ω | 35Ω | 35Ω | 35Ω | 35Ω |
| Voltage - Supply, Single (V+) | 2.7V ~ 12V | 3V ~ 16V | 12V | 12V | 10V ~ 30V | 10V ~ 30V | 10V ~ 30V | 9V ~ 36V | 9V ~ 36V |
| Voltage - Supply, Dual (V±) | ±3V ~ 6V | Not specified | ±15V | ±15V | ±4.5V ~ 20V | ±4.5V ~ 20V | ±4.5V ~ 20V | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 43ns, 31ns | Not specified | 160ns, 100ns | 160ns, 100ns | 175ns, 145ns | 175ns, 145ns | 175ns, 145ns | 175ns, 185ns | 175ns, 185ns |
| Charge Injection | 1pC | Not specified | 7pC | 7pC | 3pC | 3pC | 3pC | 15pC | 15pC |
| Channel Capacitance (CS(off), CD(off)) | 5pF | Not specified | 6pF, 6pF | 6pF, 6pF | 8pF, 8pF | 8pF, 8pF | 8pF, 8pF | 8pF, 8pF | 8pF, 8pF |
| Current - Leakage (IS(off)) (Max) | 1nA | Not specified | 250pA | 250pA | 250pA | 250pA | 250pA | 250pA | 250pA |
| Crosstalk | -71dB @ 1MHz | Not specified | Not specified | Not specified | -85dB @ 1MHz | -85dB @ 1MHz | -85dB @ 1MHz | Not specified | Not specified |
| Operating Temperature | -40°C ~ 85°C (TA) | Not specified | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 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) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Primary Recommendation: DG417LDY+ or DG417LDY+T
These parts are direct functional equivalents with active product status. Both maintain the same base product number (DG417) and 8-SOIC package. The DG417LDY+T variant is packaged in Tape & Reel format, suitable for automated assembly environments. Both support extended supply voltage ranges (9V ~ 36V single supply, ±4.5V ~ 20V dual supply) and full industrial temperature operation (-40°C ~ 85°C). RoHS3 compliance and MSL 1 rating are maintained.
Secondary Recommendation: DG417CY+ or DG417CY+T
These alternatives offer active product status with broader supply voltage capability (10V ~ 30V single supply, ±4.5V ~ 20V dual supply). The DG417CY+T is available in Tape & Reel packaging. Operating temperature range is limited to 0°C ~ 70°C, which may restrict use in extended temperature applications. Both parts demonstrate improved crosstalk performance (-85dB @ 1MHz) compared to the original specification.
Alternative: ADG417BRZ or ADG417BRZ-REEL
Manufactured by Analog Devices Inc., these parts provide active product status with identical package specifications. The ADG417BRZ-REEL variant is supplied in Cut Tape & Digi-Reel format. Supply voltage operation is limited to 12V single supply or ±15V dual supply, which may restrict compatibility with lower-voltage applications. Full industrial temperature range (-40°C ~ 85°C) is supported.
Packaging Considerations:
- Tube packaging: DG417LDY+, DG417CY+, DG417DY+, ADG417BRZ
- Tape & Reel (TR): DG417LDY+T, DG417CY+T
- Cut Tape & Digi-Reel: ADG417BRZ-REEL
- Direct Manufacturer: DG417LEDY-T1-GE3 (8-SO package variant)
All substitute parts maintain RoHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing and environmental standards.
Frequently Asked Questions (FAQ)
Q: Can DG417LDY-T1-E3 be directly replaced with DG417LDY+ or DG417LDY+T?
A: Yes. Both parts share identical switch circuit topology (SPST-NC, 1:1), package footprint (8-SOIC), and operating temperature range (-40°C ~ 85°C). The DG417LDY+ variants support extended supply voltage ranges and are available in active product status, making them suitable direct replacements for obsolete DG417LDY-T1-E3 applications.
Q: What is the difference between DG417LDY+T and DG417LDY+?
A: The primary difference is packaging format. DG417LDY+T is supplied in Tape & Reel (TR) format, optimized for automated pick-and-place assembly. DG417LDY+ is supplied in Tube format, suitable for manual assembly or lower-volume applications. Electrical specifications and performance are identical.
Q: Are ADG417BRZ and DG417LDY+ interchangeable?
A: Both parts are pin-compatible with identical 8-SOIC package dimensions and support the full industrial temperature range (-40°C ~ 85°C). However, ADG417BRZ operates at fixed supply voltages (12V single or ±15V dual), while DG417LDY+ supports broader ranges (9V ~ 36V single or ±4.5V ~ 20V dual). Verify supply voltage compatibility before substitution.
Q: Why do substitute parts show higher on-state resistance (35Ω vs. 20Ω)?
A: The original DG417LDY-T1-E3 specification of 20Ω represents a specific performance tier. Substitute parts with 35Ω on-state resistance are functionally equivalent for most switching applications. Verify on-state resistance requirements against circuit design specifications before selection.
Q: Is DG417LEDY-T1-GE3 a suitable replacement?
A: DG417LEDY-T1-GE3 is a direct Vishay Siliconix equivalent with active product status and identical 8-SOIC package. However, detailed electrical specifications (on-state resistance, switch time, charge injection) are not provided in available documentation. Consult manufacturer datasheets for complete parameter verification before design implementation.
Q: What is the significance of the operating temperature range difference between DG417CY+ (0°C ~ 70°C) and DG417LDY+ (-40°C ~ 85°C)?
A: DG417CY+ is rated for commercial temperature operation (0°C ~ 70°C), while DG417LDY+ supports full industrial temperature range (-40°C ~ 85°C). For applications requiring extended temperature operation, particularly in automotive or industrial environments, DG417LDY+ is the appropriate selection.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed maintain RoHS3 compliance and MSL 1 (Unlimited) rating, ensuring compatibility with modern manufacturing standards and environmental regulations.
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