ETEK MICROELECTRONICS ET5H133T
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.14 | $0.14 |
| 15+ | $0.14 | $2.10 |
| 25+ | $0.14 | $3.50 |
| 50+ | $0.13 | $6.50 |
| 100+ | $0.11 | $11.00 |
| N+ | $0.02 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | ETEK MICROELECTRONICS |
| Product Series | ET5H1XX |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 30V |
| Voltage - Output (Min/Fixed) | 3.3V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.95V @ 150mA |
| Current - Output | 150mA |
| Current - Quiescent (Iq) | 3 µA |
| Current - Supply (Max) | - |
| PSRR | 55dB (1kHz) |
| Control Features | - |
| Protection Features | Short Circuit |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| ROHS |
The ET5H133T is a fixed 3.3V LDO regulator from ETEK Microelectronics, offering 150mA output current. Its standout feature is an ultra-low quiescent current of just 3µA, ideal for battery-powered and energy-harvesting applications. Dropout voltage is 0.95V at full load, and PSRR is 55dB at 1kHz. The SOT-23-5 package is compact and widely used.
- Industry-Leading Low IQ (3µA): Dramatically extends battery life in always-on devices.
- Low Dropout (0.95V): Maximizes usable battery voltage range.
- Compact SOT-23-5: Fits space-constrained designs with minimal footprint.
- Stable 3.3V Rail: Reliable power for MCUs and RF modules.
Coin-Cell Powered Devices
The 3µA quiescent current maximizes battery life in key fobs, remote controls, and small wearables powered by CR2032 cells.
IoT Edge Nodes
Provides stable 3.3V for sensors and wireless transceivers in smart agriculture or building automation, with minimal power draw.
Portable Audio Players
Low dropout (0.95V) allows operation from a single Li-ion cell down to 4.25V, ensuring clean power for audio codecs.
Medical Patches
Ultra-low IQ supports long-term continuous monitoring in disposable health patches, reducing battery size.
Standby Power Circuits
Ideal for always-on RTC or wake-up circuits in appliances, consuming negligible current while maintaining system readiness.
- Q: What is the output voltage of the ET5H133T?
- A: It provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: It can deliver up to 150mA.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified; typically up to 5.5V for 3.3V LDOs, but verify with datasheet.
- Q: What is the dropout voltage?
- A: Dropout is 0.95V at 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is only 3µA, making it extremely efficient.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.
- Q: What is the output voltage of the ET5H133T?
- A: It provides a fixed 3.3V output.
- Q: What is the maximum output current?
- A: It can deliver up to 150mA.
- Q: What is the input voltage range?
- A: The input voltage range is not explicitly specified; typically up to 5.5V for 3.3V LDOs, but verify with datasheet.
- Q: What is the dropout voltage?
- A: Dropout is 0.95V at 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is only 3µA, making it extremely efficient.
- Q: What package is available?
- A: It comes in a SOT-23-5 package.

ET5H133T.pdf