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DG201BAK-E3 Equivalent & Substitute Parts
Part Overview
The DG201BAK-E3 is a 4-circuit IC switch with SPST-NC (Single Pole Single Throw - Normally Closed) configuration, manufactured by Vishay Siliconix. This interface component operates across a wide supply voltage range and features low on-state resistance of 85Ohm maximum. The product is classified as obsolete, necessitating identification of active substitute components for new designs and ongoing production requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | DG201BAK-E3 |
| Manufacturer | Vishay Siliconix |
| Category | Interface |
| Switch Circuit | SPST - NC |
| Number of Circuits | 4 |
| Multiplexer/Demultiplexer Circuit | 1:1 |
| On-State Resistance (Max) | 85Ohm |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 22V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Package / Case | 16-CDIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the DG201BAK-E3 is determined by the following critical parameters:
- Switch Configuration: SPST-NC topology with 4 independent circuits
- Circuit Ratio: 1:1 multiplexer/demultiplexer configuration
- On-State Resistance: Maximum 85Ohm specification
- Supply Voltage Compatibility: Dual supply operation within ±4.5V ~ 22V range
- Package Compatibility: 16-CDIP through-hole mounting
- Temperature Range: -55°C ~ 125°C operating window
The DG201AAK/883B qualifies as a manufacturer-recommended substitute based on matching switch circuit topology, circuit count, package form factor, and operating temperature range. However, electrical performance characteristics differ and must be evaluated for specific application requirements.
Parameter Comparison
| Parameter | DG201BAK-E3 | DG201AAK/883B |
|---|---|---|
| Manufacturer | Vishay Siliconix | Analog Devices Inc./Maxim Integrated |
| Switch Circuit | SPST - NC | SPST - NC |
| Number of Circuits | 4 | 4 |
| Multiplexer/Demultiplexer Circuit | 1:1 | 1:1 |
| On-State Resistance (Max) | 85Ohm | 175Ohm |
| Channel-to-Channel Matching (ΔRon) | 2Ohm | Not specified |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 22V | ±4.5V ~ 18V |
| Switch Time (Ton, Toff) (Max) | 300ns, 200ns | 600ns, 450ns |
| Charge Injection | 1pC | 20pC |
| Channel Capacitance (CS(off), CD(off)) | 5pF, 5pF | 5pF, 5pF |
| Current - Leakage (IS(off)) (Max) | 500pA | 1nA |
| Crosstalk | -95dB @ 100kHz | -90dB @ 100kHz |
| Operating Temperature | -55°C ~ 125°C (TA) | -55°C ~ 125°C (TA) |
| Package / Case | 16-CDIP (0.300", 7.62mm) | 16-CDIP (0.300", 7.62mm) |
| Mounting Type | Through Hole | Through Hole |
| Product Status | Obsolete | Active |
| RoHS Status | ROHS3 Compliant | RoHS non-compliant |
Engineering Selection Recommendations
The DG201AAK/883B is an active product from Analog Devices Inc./Maxim Integrated and serves as the manufacturer-recommended substitute for the obsolete DG201BAK-E3. Both components share identical switch topology, circuit count, and package specifications, enabling direct socket replacement in through-hole applications.
Key considerations for selection:
- Product Availability: DG201AAK/883B is active and currently in production, whereas DG201BAK-E3 is obsolete with limited remaining inventory.
- Compliance Differences: DG201BAK-E3 is ROHS3 compliant; DG201AAK/883B is RoHS non-compliant. Applications subject to RoHS requirements must account for this distinction.
- Electrical Performance Trade-offs: DG201AAK/883B exhibits higher on-state resistance (175Ohm vs. 85Ohm), longer switch times, and higher charge injection. Applications sensitive to these parameters require circuit-level evaluation.
- Supply Voltage Range: DG201AAK/883B operates within ±4.5V ~ 18V, compared to ±4.5V ~ 22V for DG201BAK-E3. Designs operating above 18V dual supply require the original part or alternative sourcing.
Frequently Asked Questions (FAQ)
Q: Can DG201AAK/883B directly replace DG201BAK-E3 in existing designs?
A: Physical and functional compatibility exists due to matching SPST-NC topology, 4-circuit configuration, and 16-CDIP package. However, electrical performance differs significantly. On-state resistance is doubled (175Ohm vs. 85Ohm), and switch timing is slower. Circuit-level validation is required before implementation.
Q: What is the primary limitation of using DG201AAK/883B as a substitute?
A: The maximum dual supply voltage is reduced from ±22V to ±18V. Applications requiring operation above ±18V cannot use this substitute without alternative component sourcing.
Q: Are there compliance implications when substituting DG201BAK-E3 with DG201AAK/883B?
A: Yes. DG201BAK-E3 is ROHS3 compliant, while DG201AAK/883B is RoHS non-compliant. Products destined for markets with RoHS mandates must verify compliance requirements before substitution.
Q: How do the electrical performance differences affect circuit design?
A: The doubled on-state resistance (175Ohm) increases signal attenuation and power dissipation. Slower switch times (600ns/450ns vs. 300ns/200ns) may impact timing-critical applications. Higher charge injection (20pC vs. 1pC) affects precision analog circuits. Application-specific testing is necessary.
Q: Is the 16-CDIP package identical between both parts?
A: Yes. Both components use 16-CDIP (0.300", 7.62mm) through-hole packaging, enabling direct PCB compatibility without layout modifications.
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