RH129 SMD Power Inductor 33uH 4.25A ±20% 12x12mm
The RH129 SMD Power Inductor is a high-performance shielded surface-mount (SMD) power inductor designed for efficient power management in compact electronic devices. With an inductance of 33 µH and a ±20% tolerance, it supports a saturation current of up to 4.25A, ensuring stable performance under high loads. Its low DC resistance of 53mOhm max minimizes power loss, enhancing energy efficiency. The magnetically shielded design reduces electromagnetic interference (EMI), making it ideal for sensitive applications. With a robust operating temperature range of -40°C to +125°C this inductor meets the demands of modern electronics while adhering to environmental standards.
Features
- Ferrite Drum Core Construction: Ensures excellent magnetic properties for consistent inductance.
- Magnetically Shielded: Minimizes EMI for cleaner circuit performance in sensitive applications.
- Surface Mount Technology: Enables seamless integration into printed circuit boards (PCBs).
- Wide Operating Temperature Range: Operates reliably from -40°C to +125°C, including self-heating.
- Compact and Lightweight: Measures 12.5mm x 12.5mm x 10.0mm max and weighs 4.4g, ideal for space-constrained applications.
Specifications
| Parameter | Value |
|---|---|
| Inductance | 33 µH |
| Tolerance | ±20% |
| DC Resistance (DCR) | 53mOhm max |
| Saturation Current (Isat) | 4.25A at 25°C (5.30A at 125°C) |
| Temperature Rise Current | 3.60A at 25°C (4.10A at 125°C) |
| Operating Temperature | -40°C to +125°C |
| Dimensions | 12.5mm L x 12.5mm W x 10.0mm H |
| Weight | 4.4g |
| Material – Core | Ferrite |
| Shielding | Shielded |
| Inductance Frequency – Test | 100 kHz |
| Mounting Type | Surface Mount |
Applications
- Notebook PCs: Supports efficient power management in portable computing.
- LCD TVs: Ensures stable power delivery for display electronics.
- DVD Players: Enhances performance in multimedia devices.
- Game Machines: Provides reliable power conversion for gaming hardware.

