Is there a pin-compatible replacement for SE8533X2-HF?

Several LDOs like ME6215C33M5G use the same SOT-23-5 package and may have a compatible pinout. However, pin-to-pin compatibility must be verified against both datasheets, as electrical parameters like input voltage range differ significantly.

What risks should I check before replacing SE8533X2-HF?

The primary risks are a lower maximum input voltage and higher quiescent current. The SE8533X2-HF supports up to 35V; most alternatives support less than 20V. Also, verify the candidate's quiescent current (Iq) to ensure it meets your application's low-power requirements.

SE8533X2-HF Alternatives, Datasheet & Cross Reference | Seaward Elec

The SE8533X2-HF is a 3.3V, 200mA LDO voltage regulator in a SOT-23-5 package, notable for its wide 35V input range and ultra-low 2.5µA quiescent current. Finding a direct replacement requires careful matching of these key parameters.

AI replacement insight

Electrical riskhigh

Most alternatives have a much lower max input voltage (e.g., 18V vs 35V) and higher quiescent current.

Package risklow

SOT-23-5 is a common package, but pinout must always be verified.

Firmware risklow

These are simple LDOs with no firmware, so there is no associated risk.

Can it be replaced directly?

There are no known direct, drop-in replacements that match all key parameters of the SE8533X2-HF, especially its combination of wide input voltage and ultra-low quiescent current.

Best replacement path

The best path is to select a candidate like ME6215C33M5G if the system voltage is under 18V. For higher voltages, a redesign with a different part may be necessary.

Main risk

The main risk is a mismatch in the maximum input voltage and quiescent current.

Recommended alternatives

A functional alternative in the same package with higher output current, but a lower 18V max input voltage.

View details

Alternative comparison matrix

Feature / factor	SE8533X2-HF	ME6215C33M5G	ME6119C33M5G	Compatibility / risk
Package	SOT-23-5	SOT23-5	SOT23-5	SOT23-5 — Package matches, pinout requires verification.; ME6119C33M5G: Package matches.
Voltage	35V	18V	18V	18V — Significantly lower maximum input voltage.; ME6119C33M5G: Significantly lower maximum input voltage.
Current	2.5µA	6µA	60µA	6µA / 60µA — Quiescent current is higher, may impact ultra-low power designs.; ME6119C33M5G: Quiescent current is substantially higher.

Application & sourcing insights

Questions & answers

For applications with input voltage below 18V, ME6215C33M5G is a strong functional alternative. It offers higher output current in the same package, though with slightly higher quiescent current. No known direct drop-in replacement matches the 35V input and ultra-low quiescent current.