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Equivalent & Substitute Parts Reference – DG418LDY-T1-E3
Part Overview
DG418LDY-T1-E3 is an IC switch utilized in interface applications, featuring a Single Pole Single Throw Normally Open (SPST-NO) 1:1 configuration and a maximum on-state resistance of 20Ohm. Packaged in an 8-SOIC surface-mount form factor, this product is currently obsolete. This necessitates identification of alternative models that match the critical functional and physical properties required for application compatibility.
Substiute Parts
Key Parameters
| Parameter | DG418LDY-T1-E3 Value |
|---|---|
| Switch Circuit | SPST - NO |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 20Ohm |
| 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) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute IC switches are selected strictly based on the following matched parameters within this product category: switch circuit configuration (SPST-NO), multiplexer/demultiplexer type (1:1), number of channels (1), mounting type (surface mount), package (8-SOIC), RoHS compliance, and Moisture Sensitivity Level (MSL 1). Other performance criteria such as on-state resistance, supply voltage range, switching speed, and operating temperature are maintained within the scope of the provided data.
Parameter Comparison
| Parameter | DG418LDY-T1-E3 (Vishay Siliconix) | DG418CY+ (Analog Devices/Maxim) | DG418DY+ (Analog Devices/Maxim) | DG418LDY+ (Analog Devices/Maxim) |
|---|---|---|---|---|
| Switch Circuit | SPST - NO | SPST - NO | SPST - NO | SPST - NO |
| Multiplexer/Demux Circuit | 1:1 | 1:1 | 1:1 | 1:1 |
| Number of Circuits | 1 | 1 | 1 | 1 |
| On-State Resistance (Max) | 20Ohm | 35Ohm | 35Ohm | 35Ohm |
| Voltage - Supply, Single (V+) | 2.7V ~ 12V | 10V ~ 30V | 10V ~ 30V | 9V ~ 36V |
| Voltage - Supply, Dual (V±) | ±3V ~ 6V | ±4.5V ~ 20V | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 43ns, 31ns | 175ns, 145ns | 175ns, 145ns | 175ns, 185ns |
| Operating Temperature (TA) | -40°C ~ 85°C | 0°C ~ 70°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| 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) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
DG418LDY-T1-E3 is obsolete, making sourcing impractical. Substitute part numbers DG418CY+, DG418DY+, and DG418LDY+ each meet the requirements for RoHS3 compliance and Moisture Sensitivity Level 1 (Unlimited). These substitutes are available in the same 8-SOIC surface mount packaging.
Frequently Asked Questions (FAQ)
Q1: How is substitute compatibility determined between DG418LDY-T1-E3 and alternatives?
Substitutes must match the SPST-NO switch configuration, number of circuits, package type (8-SOIC), mounting (surface mount), and compliance certifications.
Q2: Do substitutes feature the same operational voltage ranges?
Voltage supply ranges differ; users must verify suitability based on explicit voltage parameters provided.
Q3: Are there differences in on-state resistance for substitute parts?
Substitute parts DG418CY+, DG418DY+, and DG418LDY+ have a maximum on-state resistance of 35Ohm. The original part has 20Ohm.
Q4: What are the packaging and mounting considerations for alternatives?
All substitute parts provided are 8-SOIC surface mount devices, consistent with DG418LDY-T1-E3.
Q5: Are all alternatives compliant with RoHS standards and MSL for high-volume manufacturing?
All substitutes are specified as ROHS3 compliant with MSL 1 (Unlimited), matching original compliance criteria.
Q6: What operating temperature ranges are supported by substitute parts?
Operating temperature for DG418DY+ and DG418LDY+ matches the original (-40°C ~ 85°C TA). DG418CY+ supports 0°C ~ 70°C TA.
Q7: Are substitute options active and available?
DG418CY+, DG418DY+, and DG418LDY+ are designated as active inventory.
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