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DG418AK
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Product Detailed Parameters
- Description：IC SW SPST-NOX1 35OHM 8CERDIP
- Series：-
- Mfr：Vishay Siliconix
- Package：Tube
- Switch Circuit：SPST - NO
- Multiplexer/Demultiplexer Circuit：1:01
- On-State Resistance (Max)：35Ohm
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：12V
- Voltage - Supply, Dual (V±)：±15V
- Switch Time (Ton, Toff) (Max)：175ns, 145ns
- -3db Bandwidth：-
- Charge Injection：60pC
- Channel Capacitance (CS(off), CD(off))：8pF, 8pF
- Current - Leakage (IS(off)) (Max)：250pA
- Crosstalk：-
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Through Hole
- Package / Case：8-CDIP (0.300", 7.62mm)
- Supplier Device Package：8-CERDIP
- Number of Circuits：1
- Grade：-
- Qualification：-
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Overview
The DG418AK is a single-channel, precision CMOS analog switch manufactured by Vishay Siliconix. It features a Single Pole Single Throw (SPST) configuration housed in an 8-lead Ceramic Dual In-Line Package (CDIP-8). The device supports dual supply voltages ranging from ±15 V to ±15 V and operates within a temperature range of -55°C to +125°C. Key electrical specifications include a maximum on-resistance of 35 Ohms, a maximum power dissipation of 600 mW, and a maximum supply current of 1 µA. Switching times are characterized by a maximum turn-on time of 175 ns and a maximum turn-off time of 145 ns.
Feature Summary
- Precision CMOS technology ensures low leakage and high isolation.
- Robust ceramic packaging supports extended industrial and military temperature ranges.
- Single-channel SPST architecture simplifies signal routing in compact designs.
Applications
- High-reliability aerospace instrumentation
- Military-grade data acquisition systems
- Industrial process control loops
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notices, as legacy ceramic packages may have limited availability. Validate lot traceability for critical applications requiring strict quality assurance protocols.
Selection Notes
Select the DG418AK when wide operating temperature extremes and high reliability are required. The CDIP-8 package offers superior thermal and mechanical stability compared to plastic variants. Ensure design compatibility with ±15 V dual supplies and verify that the 35 Ohm on-resistance meets circuit impedance requirements.
Part Context
This component belongs to the DG series of precision analog switches from Vishay Siliconix. It represents a legacy offering designed for demanding environments where ceramic packaging provides necessary protection against moisture and mechanical stress. The DG418AK serves as a robust alternative to modern plastic-packaged equivalents in specialized sectors.
Replacement Considerations
Direct pin-compatible replacements include DG418DJ-E3 (PDIP-8) and DG418DY-E3 (SOIC-8), though package differences require PCB layout adjustments. Verify switching speed and on-resistance tolerances when substituting with other DG series parts.
