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DG181AA/B
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Product Detailed Parameters
- Description：SPST; DUAL; 30 OHM
- Series：*
- Mfr：Rochester Electronics, LLC
- Package：Bulk
- Switch Circuit：-
- Multiplexer/Demultiplexer Circuit：-
- On-State Resistance (Max)：-
- Channel-to-Channel Matching (ΔRon)：-
- Voltage - Supply, Single (V+)：-
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：-
- -3db Bandwidth：-
- Charge Injection：-
- Channel Capacitance (CS(off), CD(off))：-
- Current - Leakage (IS(off)) (Max)：-
- Crosstalk：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Number of Circuits：-
- Grade：-
- Qualification：-
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Overview
The DG181AA/B is a dual single-pole single-throw (SPST) normally-closed analog switch manufactured by Vishay Siliconix and distributed by Rochester Electronics. Housed in a TO-100-10 metal can package, this component features two independent switching circuits with a maximum on-resistance of 30 ohms. It operates with dual supply voltages up to ±15V and supports an extended temperature range from -55°C to 125°C. Key electrical characteristics include a maximum off-leakage current of 1nA, channel capacitance of 9pF, and switching times of 150ns for turn-on and 130ns for turn-off.
Feature Summary
- Normally-closed SPST configuration ensures signal continuity when unpowered
- Metal can packaging provides robust shielding and thermal stability
- Extended industrial temperature rating suitable for harsh environments
Applications
- High-reliability aerospace signal routing
- Military instrumentation multiplexing
- Harsh environment test and measurement systems
Procurement Notes
Verify the specific suffix designation, as the DG181AA/B indicates a batch or lot code variation rather than a functional difference. Confirm RoHS compliance status, as standard versions are typically non-compliant. Validate the manufacturer origin, noting that while produced by Vishay Siliconix, distribution is handled by Rochester Electronics LLC for obsolete inventory.
Selection Notes
Select this component for applications requiring normally-closed logic in analog signal paths. The TO-100-10 package necessitates through-hole mounting and specialized handling due to the metal can construction. Ensure the system design accommodates the ±15V dual supply requirement and verifies that the 30-ohm on-resistance meets the signal integrity specifications.
Part Context
This part belongs to the DG181 family of dual SPST analog switches. The DG181 series is characterized by high reliability and radiation hardness, making it suitable for defense and space applications. The DG181AA variant specifically denotes the normally-closed configuration within this product line.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing footprints and control logic before considering alternative sources.
