DG303ABWE+ Equivalent & Substitute Parts

Part Overview

The DG303ABWE+ is a dual-channel SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This 16-SOIC surface mount device provides 2:1 multiplexing functionality with 50Ohm on-state resistance, designed for signal routing and switching applications in analog circuits. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Identifying equivalent and substitute parts is necessary when addressing supply chain constraints, inventory optimization, or design flexibility requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

DG303ABWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1149DG303ABWE+ Datasheet

Current PartRFQ

DG303ABWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1149DG303ABWE+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DG303ABWE+ is determined by strict alignment with the following critical parameters:

• Switch circuit configuration: SPDT topology with 2:1 multiplexer/demultiplexer function
• Number of independent circuits: 2 channels
• On-state resistance specification: 50Ohm maximum
• Dual supply voltage range: ±5V ~ 18V
• Switching performance: Ton ≤ 300ns, Toff ≤ 250ns
• Charge injection: 12pC
• Channel capacitance: 14pF (CS(off) and CD(off))
• Leakage current: 5nA maximum
• Crosstalk isolation: -74dB @ 500kHz
• Operating temperature range: -25°C ~ 85°C
• Package format: 16-SOIC surface mount
• Compliance certifications: RoHS3, MSL 1

Only parts meeting all specified electrical characteristics and the 16-SOIC package requirement qualify as direct substitutes. No parameter relaxation or derating is permitted.

Parameter Comparison

Engineering Selection Recommendations

The DG303ABWE+ maintains Active product status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory compliance for current and future applications. The MSL 1 rating provides unlimited shelf life without moisture bake-out requirements, reducing logistics complexity.

When selecting equivalent parts, prioritize components with identical Active product status and matching RoHS3 certification. The 16-SOIC package footprint is fixed and non-negotiable for PCB compatibility. All electrical parameters—including the 50Ohm on-state resistance, ±5V ~ 18V dual supply range, and switching time specifications—must match exactly to ensure functional equivalence in signal routing and multiplexing applications.

Frequently Asked Questions (FAQ)

Q: What defines a valid substitute for the DG303ABWE+? A: A valid substitute must match all electrical specifications (SPDT 2:1 configuration, 50Ohm on-state resistance, ±5V ~ 18V supply, 300ns/250ns switching times, 12pC charge injection, 14pF channel capacitance, 5nA leakage, -74dB crosstalk) and be packaged in 16-SOIC surface mount format with Active product status and RoHS3 compliance.

Q: Can parts with different on-state resistance values substitute for the DG303ABWE+? A: No. The 50Ohm on-state resistance specification is a critical electrical parameter. Parts with different resistance values will alter signal attenuation and impedance matching characteristics, making them incompatible for direct substitution.

Q: Are there supply voltage variations that qualify as substitutes? A: No. The ±5V ~ 18V dual supply voltage range is a fixed requirement. Parts with different supply specifications cannot be used as direct substitutes, as they may not operate correctly in the intended circuit.

Q: Does the 16-SOIC package format allow for alternative package options? A: No. The 16-SOIC (0.295", 7.50mm Width) surface mount package is the specified format. Alternative packages, including different SOIC widths or other package types, are not compatible due to PCB footprint and pinout differences.

Q: What is the significance of the MSL 1 rating for component handling? A: MSL 1 indicates unlimited moisture sensitivity, meaning the component does not require moisture bake-out procedures before soldering. This simplifies inventory management and reduces handling complexity compared to higher MSL ratings.

Q: How does the -74dB crosstalk specification affect substitution decisions? A: The -74dB crosstalk isolation at 500kHz is a critical performance parameter for signal integrity in multiplexing applications. Substitute parts must meet or exceed this specification to prevent signal degradation between channels.