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DG418LEDQ-T1-GE3 Equivalent & Substitute Parts
Part Overview
The DG418LEDQ-T1-GE3 is a single-circuit SPST (Single Pole Single Throw) IC switch manufactured by Vishay Siliconix, designed for interface applications requiring low on-state resistance and fast switching performance. This component operates across a wide supply voltage range (3V to 16V single supply, or ±3V to ±8V dual supply) and is housed in an 8-TSSOP surface mount package. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when they maintain identical electrical performance characteristics and package specifications, ensuring direct functional replacement in circuit designs.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPST |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 9Ω |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| Voltage - Supply, Single (V+) | 3V ~ 16V |
| Voltage - Supply, Dual (V±) | ±3V ~ ±8V |
| Switch Time (Ton, Toff) (Max) | 40ns, 35ns |
| Charge Injection | 26pC |
| Channel Capacitance (CS(off), CD(off)) | 11pF, 32pF |
| Current - Leakage (IS(off)) (Max) | 10nA |
| Crosstalk | -72dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
The DG417LEDQ-T1-GE3 qualifies as a parametric equivalent to the DG418LEDQ-T1-GE3 based on the following substitution criteria:
Electrical Performance Match:
- Identical switch circuit topology (SPST, 1:1 multiplexer configuration)
- Matching on-state resistance specification (9Ω maximum)
- Identical supply voltage ranges (3V to 16V single supply; ±3V to ±8V dual supply)
- Matching switching time specifications (40ns Ton, 35ns Toff maximum)
- Identical charge injection (26pC)
- Matching channel capacitance values (11pF, 32pF)
- Identical leakage current specification (10nA maximum)
- Matching crosstalk performance (-72dB @ 1MHz)
- Identical operating temperature range (-40°C to 85°C)
Package and Mechanical Compatibility:
- Same package type: 8-TSSOP surface mount
- Identical package dimensions (0.173", 4.40mm width)
- Same mounting technology and footprint
Compliance and Regulatory Alignment:
- Both parts maintain ROHS3 compliance
- Both parts carry MSL 1 (Unlimited) moisture sensitivity rating
- Both parts are active production status
The substitution is based strictly on matching electrical parameters, package specifications, and regulatory compliance. Both parts are manufactured by Vishay Siliconix and share the same base product number series (DG4xx).
Parameter Comparison
| Parameter | DG418LEDQ-T1-GE3 | DG417LEDQ-T1-GE3 |
|---|---|---|
| Manufacturer | Vishay Siliconix | Vishay Siliconix |
| Switch Circuit | SPST | SPST |
| Number of Circuits | 1 | 1 |
| On-State Resistance (Max) | 9Ω | 9Ω |
| Multiplexer/Demultiplexer Circuit | 1:1 | 1:1 |
| Voltage - Supply, Single (V+) | 3V ~ 16V | 3V ~ 16V |
| Voltage - Supply, Dual (V±) | ±3V ~ ±8V | ±3V ~ ±8V |
| Switch Time Ton (Max) | 40ns | 40ns |
| Switch Time Toff (Max) | 35ns | 35ns |
| Charge Injection | 26pC | 26pC |
| Channel Capacitance CS(off) | 11pF | 11pF |
| Channel Capacitance CD(off) | 32pF | 32pF |
| Current - Leakage IS(off) (Max) | 10nA | 10nA |
| Crosstalk | -72dB @ 1MHz | -72dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) | 8-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the DG418LEDQ-T1-GE3 and DG417LEDQ-T1-GE3 are suitable for direct substitution in applications requiring SPST switching functionality with the specified electrical and thermal performance. Selection between these parts may be based on:
Availability and Packaging Format: The DG418LEDQ-T1-GE3 is supplied in Tape & Reel (TR) packaging, while the DG417LEDQ-T1-GE3 is available in Cut Tape (CT) and Digi-Reel® formats. Choose based on procurement volume and assembly line requirements.
Regulatory Compliance: Both parts maintain ROHS3 compliance and carry identical moisture sensitivity ratings, making them interchangeable from a regulatory standpoint. Both are suitable for applications requiring compliance with environmental and hazardous substance restrictions.
Production Status: Both parts are active in production, ensuring long-term availability and supply chain stability for new designs and production runs.
Frequently Asked Questions (FAQ)
Q: Can the DG417LEDQ-T1-GE3 be used as a direct replacement for the DG418LEDQ-T1-GE3?
A: Yes. Both parts share identical electrical specifications, including on-state resistance, supply voltage ranges, switching times, and all signal integrity parameters. The 8-TSSOP package footprint is identical, allowing direct PCB substitution without design modifications.
Q: What is the difference between these two part numbers?
A: The primary difference is the packaging format. The DG418LEDQ-T1-GE3 uses Tape & Reel (TR) packaging, while the DG417LEDQ-T1-GE3 is available in Cut Tape (CT) and Digi-Reel® formats. All electrical and thermal characteristics are identical.
Q: Are there any temperature or voltage operating differences between these parts?
A: No. Both parts operate across the identical temperature range (-40°C to 85°C) and support the same supply voltage specifications (3V to 16V single supply, or ±3V to ±8V dual supply).
Q: Do both parts meet the same compliance standards?
A: Yes. Both the DG418LEDQ-T1-GE3 and DG417LEDQ-T1-GE3 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, making them suitable for equivalent applications in regulated environments.
Q: Can these parts be used interchangeably in high-frequency applications?
A: Yes. Both parts maintain identical crosstalk performance (-72dB @ 1MHz) and charge injection specifications (26pC), supporting equivalent performance in signal switching and multiplexing applications across the specified frequency range.
Q: What packaging considerations should be made when selecting between these parts?
A: The DG418LEDQ-T1-GE3 in Tape & Reel format is optimized for high-volume automated assembly. The DG417LEDQ-T1-GE3 in Cut Tape and Digi-Reel® formats provides flexibility for lower-volume production or mixed-component procurement. Both use the same 8-TSSOP footprint and require identical PCB design considerations.
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