
TECH PUBLIC
A strong alternative with identical key electrical parameters and package; likely a direct clone.
Find the best replacement for the RT9013-33GB-MS, a 3.3V 500mA LDO. This guide reviews pin-compatible alternatives, functional upgrades, and parametric options to help you make an informed choice.
While several candidates use the same SOT-23-5 package, pinout must be verified to ensure drop-in compatibility.
Strong candidates match key electricals. Weaker candidates have lower current ratings that must be checked against application load.
The availability of multiple cross-vendor alternatives suggests good sourcing flexibility for this function.
Direct replacement for RT9013-33GB-MS should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
TPRT9013-33GB is the most promising alternative, appearing to be a direct clone. SPX3819M5-L-3-3(MS) is also an excellent choice, offering upgraded performance.
The primary risk is pinout incompatibility. Even with identical packages, manufacturers can use different pin assignments. Always verify the pinout diagram in the datasheet.

TECH PUBLIC
A strong alternative with identical key electrical parameters and package; likely a direct clone.
| Feature / factor | RT9013-33GB-MS | TPRT9013-33GB | SPX3819M5-L-3-3(MS) | ME6119C33M5G | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23-5 | SOT23-5 | SOT-23-5 | SOT23-5 | SOT23-5 / SOT-23-5 — Package matches target.; SPX3819M5-L-3-3(MS): Package matches target.; ME6119C33M5G: Package matches target.; SE8533X2-HF: Package matches target. |
| Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V — Output voltage matches.; SPX3819M5-L-3-3(MS): Output voltage matches.; ME6119C33M5G: Output voltage matches.; SE8533X2-HF: Output voltage matches. |
| Current | 500mA | 500mA | 500mA | 400mA | 500mA / 400mA / 200mA — Output current matches.; SPX3819M5-L-3-3(MS): Output current matches.; ME6119C33M5G: Lower output current. Requires derating analysis.; SE8533X2-HF: Significantly lower output current. |
| Quiescent Current | 60uA | 60uA | 1.5uA | - | 60uA / 1.5uA / 2.5uA — Quiescent current matches.; SPX3819M5-L-3-3(MS): Significantly lower quiescent current is an upgrade.; SE8533X2-HF: Ultra-low quiescent current is a major benefit. |
| Pinout | Standard LDO | Unknown | - | - | Unknown — Pinout is likely identical but requires datasheet verification. |
| Temperature | -40°C to +85°C | - | -40°C to 125°C | - | -40°C to 125°C — Wider operating temperature range. |
Verified drop-in options for RT9013-33GB-MS 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.