DG401BDY Equivalent & Substitute Parts

Part Overview

The DG401BDY is a 2-circuit SPST-NO analog switch IC manufactured by Vishay Siliconix, housed in a 16-SOIC surface mount package. This component operates as a 1:1 multiplexer/demultiplexer with 45Ohm on-state resistance, designed for signal routing and switching applications across industrial and commercial temperature ranges (-40°C to 85°C).

The DG401BDY is classified as obsolete. Equivalent substitute parts are available to maintain design continuity and ensure long-term component availability for new designs and production support.

Substiute Parts

DG401BDY

Vishay SiliconixIn Stock: 1220DG401BDY Datasheet

Current PartRFQ

DG401BDY-E3

Vishay SiliconixIn Stock: 1105DG401BDY-E3 Datasheet

Parametric EquivalentRFQ

DG401DY-E3

Vishay SiliconixIn Stock: 838DG401DY-E3 Datasheet

Parametric EquivalentRFQ

DG401DYZ

Renesas Electronics CorporationIn Stock: 1161DG401DYZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DG401BDY is determined by strict parametric matching across the following critical criteria:

Mandatory Matching Parameters:

• Switch circuit type: SPST - NO
• Number of circuits: 2
• Multiplexer configuration: 1:1
• On-state resistance: 45Ohm maximum
• Package type: 16-SOIC surface mount
• Operating temperature range: -40°C to 85°C minimum
• Supply voltage ranges: Single supply 13V–36V and dual supply ±7V–22V

Acceptable Variation Parameters:

• Channel-to-channel matching (ΔRon): Not specified for main part; DG401DYZ specifies 3Ohm
• Crosstalk performance: DG401DYZ specifies -90dB @ 1MHz (versus -94.8dB for main part)
• Moisture sensitivity level: DG401BDY-E3 and DG401DY-E3 specify MSL 1; DG401DYZ specifies MSL 3
• Product status and RoHS compliance: Varies by substitute

All substitute parts maintain identical electrical performance within the specified parameter ranges and are pin-compatible in 16-SOIC packaging.

Parameter Comparison

Engineering Selection Recommendations

DG401BDY-E3 (Vishay Siliconix)

This is the direct parametric equivalent with identical electrical specifications. DG401BDY-E3 is actively manufactured and ROHS3 compliant, making it the primary substitute for new designs and production continuity. It maintains the same MSL 1 rating as the original part. Select this part for applications requiring RoHS compliance and long-term availability assurance.

DG401DY-E3 (Vishay Siliconix)

This part is functionally equivalent with identical electrical performance and active product status. ROHS3 compliance and MSL 1 rating match DG401BDY-E3. This part is suitable as an alternative when DG401BDY-E3 availability is constrained.

DG401DYZ (Renesas Electronics)

This part meets all core electrical requirements with identical on-state resistance, switch timing, and charge injection specifications. However, DG401DYZ is classified as obsolete and carries MSL 3 (168-hour moisture sensitivity), requiring controlled storage conditions. The supply voltage range is slightly broader for single supply (5V–34V versus 13V–36V) but narrower for dual supply (±5V–17V versus ±7V–22V). Crosstalk performance is -90dB @ 1MHz versus -94.8dB for the primary part. Use DG401DYZ only when existing inventory is available and storage conditions can be maintained.

Frequently Asked Questions (FAQ)

Q: Can DG401BDY-E3 be used as a direct replacement for DG401BDY?

A: Yes. DG401BDY-E3 is a parametric equivalent with identical electrical specifications, pin configuration, and 16-SOIC package. The primary difference is active product status and ROHS3 compliance of DG401BDY-E3 versus the obsolete, non-compliant status of DG401BDY.

Q: What are the key differences between DG401DYZ and DG401BDY-E3?

A: Both parts share identical on-state resistance (45Ohm), switch timing (150ns/100ns), and charge injection (60pC). DG401DYZ differs in: (1) manufacturer (Renesas versus Vishay), (2) product status (obsolete versus active), (3) MSL rating (3 versus 1), (4) single supply voltage range (5V–34V versus 13V–36V), and (5) crosstalk performance (-90dB versus -94.8dB @ 1MHz).

Q: Are all substitute parts pin-compatible?

A: Yes. All substitute parts use the 16-SOIC surface mount package with identical pinout and electrical interface. No PCB layout modifications are required for substitution.

Q: Which substitute part should be selected for new designs?

A: DG401BDY-E3 or DG401DY-E3 are recommended for new designs. Both are actively manufactured, ROHS3 compliant, and carry MSL 1 ratings. DG401DYZ should be avoided for new designs due to obsolete status and higher moisture sensitivity requirements.

Q: What is the impact of MSL 3 rating on DG401DYZ?

A: MSL 3 requires storage at controlled temperature and humidity (typically ≤30°C / ≤60% RH) with a 168-hour floor life after moisture exposure. This necessitates bake-out procedures before reflow soldering. MSL 1 parts (DG401BDY-E3, DG401DY-E3) have unlimited floor life and do not require moisture control.

Q: Can DG401DYZ be used in applications requiring RoHS compliance?

A: Yes. DG401DYZ carries ROHS3 compliance certification. However, its obsolete status and higher MSL rating make it less suitable than active alternatives for new production.