
Texas Instruments
A pin-compatible upgrade with a wider operating temperature range, suitable for more demanding environments.
Find the best replacements for the TPS3823-33DBVR, a 3.3V processor supervisor in a SOT-23-5 package. This guide covers pin-compatible upgrades and functional alternatives.
Must verify reset delay time. Some alternatives have 25ms delay vs. target's 200ms.
All viable candidates are in the same SOT-23-5 package.
Multiple manufacturers and family variants exist.
Direct replacement for TPS3823-33DBVR should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Start with Datasheet verified or Strong match candidates for TPS3823-33DBVR, then review parametric alternatives for package and electrical fit.
The main risk when substituting is mismatching the reset delay time. Some alternatives have a 25ms delay instead of the original 200ms.

Texas Instruments
A pin-compatible upgrade with a wider operating temperature range, suitable for more demanding environments.
| Feature / factor | TPS3823-33DBVR | TPS3823A-33DBVR | UM823SS | TPS3820-33DBVR | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 — Package is identical.; UM823SS: Package is identical.; TPS3820-33DBVR: Package is identical. |
| Voltage | 2.93 V | 2.93 V | 2.93 V | 2.93 V | 2.93 V — Reset threshold voltage matches.; UM823SS: Reset threshold matches.; TPS3820-33DBVR: Reset threshold matches. |
| Temperature | -40°C to 85°C | -40°C to 125°C | - | - | -40°C to 125°C — Wider operating temperature range. |
| Reset Delay Time | 200 ms | 200 ms | - | 25 ms | 200 ms / 25 ms — Reset delay time matches.; TPS3820-33DBVR: Reset delay is significantly shorter and may impact system timing. |
| Manufacturer | Texas Instruments | - | Union | - | Union — Cross-vendor alternative. |
| Current | 15 µA (Typ) | - | 3 µA | - | 3 µA — Significantly lower supply current. |
| Operating Voltage Range | 1.1 V to 5.5 V | - | 1 V to 7 V | - | 1 V to 7 V — Wider operating voltage range. |
Verified drop-in options for TPS3823-33DBVR are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.