PI5A100W Equivalent & Substitute Parts

Part Overview

The PI5A100W is a 4-circuit SPDT analog switch manufactured by Diodes Incorporated, designed for general-purpose signal routing and multiplexing applications. This part operates with a single supply voltage of 2V to 6V and features 10Ohm on-state resistance with 230MHz bandwidth. The PI5A100W is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

PI5A100W

Diodes IncorporatedIn Stock: 984PI5A100W Datasheet

Current PartRFQ

PI5A100WE

Diodes IncorporatedIn Stock: 1313PI5A100WE Datasheet

DirectRFQ

TS3A5018D

Texas InstrumentsIn Stock: 4383TS3A5018D Datasheet

MFR RecommendedRFQ

TS3A5018DR

Texas InstrumentsIn Stock: 19121TS3A5018DR Datasheet

MFR RecommendedRFQ

TS3L100DR

Texas InstrumentsIn Stock: 10150TS3L100DR Datasheet

MFR RecommendedRFQ

TS5L100D

Texas InstrumentsIn Stock: 1066TS5L100D Datasheet

MFR RecommendedRFQ

TS5L100DR

Texas InstrumentsIn Stock: 1643TS5L100DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PI5A100W is determined by the following critical parameters:

Mandatory Matching Parameters:

• Switch Circuit: SPDT
• Number of Circuits: 4
• Multiplexer/Demultiplexer Circuit: 2:1
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Allowable Parameter Variations:

• On-State Resistance (Max): 10Ohm to 19Ohm
• Voltage - Supply, Single (V+): Overlapping or compatible ranges
• -3dB Bandwidth: 230MHz or higher
• Operating Temperature: -40°C ~ 85°C or compatible ranges

Substitute parts are grouped into two categories:

Category 1: Direct Functional Equivalents (Diodes Incorporated & Texas Instruments TS3A5018 Series) These parts maintain the core 10Ohm on-state resistance specification and operate within overlapping voltage ranges. PI5A100WE is a direct Diodes Incorporated variant with improved RoHS compliance. TS3A5018D and TS3A5018DR (Texas Instruments) provide enhanced performance with lower channel-to-channel matching and reduced charge injection.

Category 2: Functional Substitutes with Parameter Deviations (Texas Instruments TS3L100 & TS5L100 Series) These parts maintain SPDT 4-circuit 2:1 multiplexer topology and 16-SOIC packaging but operate at different voltage ranges and on-state resistance values. TS3L100DR operates at 3V ~ 3.6V with 15Ohm resistance. TS5L100D and TS5L100DR operate at 6V ~ 6.5V with 19Ohm resistance. These are suitable only when voltage supply specifications can accommodate the narrower operating ranges.

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: PI5A100WE (Diodes Incorporated) provides the most direct replacement with identical electrical specifications and improved regulatory compliance. TS3A5018DR (Texas Instruments) is the recommended active substitute, offering superior performance characteristics including lower channel-to-channel matching (300mOhm vs. 800mOhm), reduced charge injection (2pC vs. 10pC), and lower leakage current (100nA vs. 10µA). TS3A5018DR is currently in active production status with 19,100 units in stock.

For Extended Temperature Range (-40°C ~ 85°C): PI5A100W, PI5A100WE, TS3A5018D, and TS3A5018DR all support the full -40°C ~ 85°C operating temperature range. TS3L100DR, TS5L100D, and TS5L100DR are limited to 0°C ~ 70°C and are unsuitable for applications requiring extended low-temperature operation.

For Voltage Supply Compatibility:

• 2V ~ 6V supply range: PI5A100W, PI5A100WE only
• 1.65V ~ 3.6V supply range: TS3A5018D, TS3A5018DR (narrower range, suitable for low-voltage applications)
• 3V ~ 3.6V supply range: TS3L100DR (narrowest range)
• 6V ~ 6.5V supply range: TS5L100D, TS5L100DR (high-voltage only)

For Active Production Status: TS3A5018DR is the only substitute currently in active production. All other alternatives are either obsolete, discontinued, or in last-time-buy status.

Frequently Asked Questions (FAQ)

Q: Can TS3A5018DR directly replace PI5A100W in all applications?

A: TS3A5018DR is electrically compatible for applications operating within the 1.65V ~ 3.6V supply range. The narrower voltage specification requires verification that your design operates within this range. All other parameters—switch circuit topology, number of circuits, on-state resistance, package, and mounting type—are identical. TS3A5018DR offers superior performance with lower channel-to-channel matching and reduced charge injection.

Q: Why do TS3L100DR and TS5L100 series have different on-state resistance values?

A: TS3L100DR and TS5L100 series are designed for networking applications (10/100 Base-T Ethernet) and operate at different voltage supplies. TS3L100DR operates at 3V ~ 3.6V with 15Ohm on-state resistance, while TS5L100D and TS5L100DR operate at 6V ~ 6.5V with 19Ohm on-state resistance. These are functional substitutes only when your application can accommodate the specified voltage ranges and higher on-state resistance values.

Q: Is the 16-SOIC package identical across all substitute parts?

A: Yes. All parts listed use the 16-SOIC package with 0.154" (3.90mm) width. PCB layout and footprint are identical. Packaging format differs (Tube, Cut Tape, Digi-Reel) but does not affect component compatibility.

Q: What is the impact of lower channel-to-channel matching in TS3A5018DR?

A: TS3A5018DR provides 300mOhm channel-to-channel matching compared to 800mOhm in PI5A100W. Lower matching values indicate better uniformity across the four switch circuits, reducing signal distortion and crosstalk in precision multiplexing applications. This is a performance improvement.

Q: Can I use TS5L100DR in a design originally specified for PI5A100W?

A: Only if your application meets all of the following criteria: (1) supply voltage is 6V ~ 6.5V, (2) operating temperature range is 0°C ~ 70°C, and (3) on-state resistance of 19Ohm is acceptable. TS5L100DR is not suitable for applications requiring the full -40°C ~ 85°C temperature range or 2V ~ 6V supply flexibility of the original PI5A100W.

Q: What is the current availability status of substitute parts?

A: TS3A5018DR (Texas Instruments) is the only actively produced substitute with 19,100 units in stock. PI5A100WE has 1,208 units available but is discontinued at DiGi Electronics. TS3A5018D, TS5L100D, and TS5L100DR are in last-time-buy status. For new designs, TS3A5018DR is the recommended choice for long-term supply assurance.