
Vishay Siliconix
A potential upgrade with lower on-resistance and higher bandwidth in the same package.
Find the best replacement for the Texas Instruments TS5A3159DCKR analog switch. This guide analyzes pin-compatible upgrades and functional alternatives from top manufacturers.
Multiple candidates use the same SC-70-6/SOT-363 package.
On-resistance, supply voltage, and bandwidth must be checked. Some candidates have narrower voltage ranges.
Alternatives are available from major manufacturers like Vishay and onsemi.
Several parts like DG4157EDL-T1-GE3 are strong candidates for replacing TS5A3159DCKR, offering better performance in the same package. However, pinout must be verified.
Upgrade to a part with lower On-Resistance, like Vishay's DG4157EDL-T1-GE3 or onsemi's FSA4159P6X.
The primary risk is ensuring pin-for-pin compatibility and that minor differences in electrical characteristics, like switching times or supply voltage range, are acceptable.

Vishay Siliconix
A potential upgrade with lower on-resistance and higher bandwidth in the same package.
| Feature / factor | TS5A3159DCKR | DG4157EDL-T1-GE3 | FSA4159P6X | DG4599EDL-T1-GE3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SC-70 (6) | SC-70-6 | SOT-363 | SC-70-6 | SC-70-6 / SOT-363 — Package matches, likely form-fit compatible.; FSA4159P6X: SOT-363 is equivalent to SC-70-6.; DG4599EDL-T1-GE3: Package matches.; DG2012EDL-T1-GE3: Package matches. |
| Supply Voltage | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.65 V to 5.5 V | 1.8 V to 5.5 V | 1.65 V to 5.5 V / 1.8 V to 5.5 V — Operating voltage range matches.; FSA4159P6X: Operating voltage range matches.; DG4599EDL-T1-GE3: Minimum supply voltage is higher; not suitable for 1.65V rails.; DG2012EDL-T1-GE3: Minimum supply voltage is higher (1.8V vs 1.65V). |
| On Resistance | 1.5 Ω | 0.86 Ω | 1.1 Ω | ~0.4 Ω | 0.86 Ω / 1.1 Ω / ~0.4 Ω / ~1 Ω — Lower on-resistance is a performance upgrade.; FSA4159P6X: Lower on-resistance is a performance improvement.; DG4599EDL-T1-GE3: Significantly lower on-resistance is a major upgrade.; DG2012EDL-T1-GE3: Lower on-resistance is an improvement. |
| Bandwidth | 100 MHz | 152 MHz | - | - | 152 MHz — Higher bandwidth improves signal integrity. |
The best alternatives for TS5A3159DCKR are DG4157EDL-T1-GE3 from Vishay and FSA4159P6X from onsemi. Both offer lower on-resistance in the same package and supply voltage range, representing a performance upgrade.