Nisshinbo Micro Devices Inc. RP103K121D-TR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.99 | $0.99 |
| 15+ | $0.23 | $3.45 |
| 25+ | $0.23 | $5.75 |
| 50+ | $0.21 | $10.50 |
| 100+ | $0.19 | $19.00 |
| N+ | $0.04 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Nisshinbo Micro Devices Inc. |
| Product Series | RP103x |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.25V |
| Voltage - Output (Min/Fixed) | 1.2V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.62V @ 150mA |
| Current - Output | 150mA |
| Current - Quiescent (Iq) | 50 µA |
| Current - Supply (Max) | - |
| PSRR | 75dB (1kHz) |
| Control Features | Enable |
| Protection Features | Over Current |
| Operating Temperature | -40°C ~ 85°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 4-UDFN Exposed Pad |
| Supplier Device Package | DFN(PL)1010-4 |
| ROHS |
The RP103K121D is a fixed 1.2V LDO regulator from Nisshinbo, capable of delivering 150mA. With a quiescent current of 50 µA and 75dB PSRR at 1kHz, it provides clean, stable power for sensitive electronics. The DFN(PL)1010-4 package is ideal for compact designs.
- High Noise Rejection: 75dB PSRR at 1kHz ensures clean output for analog circuits.
- Low Power: 50 µA quiescent current extends battery life.
- Compact Package: DFN(PL)1010-4 fits space-constrained PCBs.
Digital Core Supplies
Provides a stable 1.2V rail for low-voltage digital cores in MCUs and DSPs, with 75dB PSRR at 1kHz filtering supply noise.
Precision Analog Circuits
High PSRR ensures clean power for op-amps and ADCs requiring low noise at 1.2V.
Battery-Powered Instruments
50 µA quiescent current balances performance and efficiency for handheld meters.
RF Transceivers
Stable 1.2V supply with good ripple rejection improves RF signal integrity.
Portable Medical Devices
Compact DFN(PL)1010-4 package and reliable output support wearable health monitors.
- Q: What is the output voltage?
- A: The fixed output voltage is 1.2V.
- Q: What is the maximum current?
- A: The maximum output current is 150mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the official datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.62V at 150mA.
- Q: What is the quiescent current?
- A: The quiescent current is 50 µA.
- Q: What is the PSRR?
- A: The power supply rejection ratio is 75dB at 1kHz.
- Q: What is the output voltage?
- A: The fixed output voltage is 1.2V.
- Q: What is the maximum current?
- A: The maximum output current is 150mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the official datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.62V at 150mA.
- Q: What is the quiescent current?
- A: The quiescent current is 50 µA.
- Q: What is the PSRR?
- A: The power supply rejection ratio is 75dB at 1kHz.

RP103K121D-TR.pdf