1. Pengenalan
The HI-Link HLK-2M03 is a compact, high-efficiency AC-DC power supply module designed for various electronic applications. It converts a universal input voltage (90-245Vac) to a stable 3.3Vdc output with a maximum current of 600mA. This module features low power consumption, high reliability, and robust protection mechanisms, making it suitable for smart home devices, automation control, communication equipment, and instrumentation.

Rajah 1: Depan view of the HLK-2M03 Power Supply Module, showing input and output pins.
2. Ciri-ciri Utama
- Ultra-compact and small form factor.
- Input universal voltage range: 90 ~ 245Vac.
- Low power consumption with no-load loss less than 0.1W.
- Keluaran riak dan bunyi yang rendah.
- Integrated output short circuit and overcurrent protection with automatic recovery.
- High efficiency and power density.
- Input and output isolation withstand voltage: 3000Vac.
- 100% full load aging and testing for reliability.
- Long operational life, exceeding 100,000 hours of continuous working time.
- Environmentally sealed with waterproof and thermally conductive adhesive potting, meeting IP65 standard for moisture and vibration resistance.
- Operates without requiring external circuitry.
3. Spesifikasi Teknikal
| Parameter | Nilai |
|---|---|
| Input Voltage Julat | 90 ~ 245Vac |
| Keluaran Voltage | 3.3Vdc |
| Arus Keluaran | 600mA (Maks) |
| Kuasa Keluaran | 2W |
| Kehilangan tanpa beban | < 0.1W |
| Isolasi Voltage | 3000Vac (Input to Output) |
| Suhu Operasi | -25°C hingga +60°C |
| Suhu Penyimpanan | -40°C hingga +80°C |
| Kelembapan Relatif | 5-95% |
| Kaedah Penyejukan | Penyejukan semula jadi |
| Tekanan Atmosfera | 80-106 Kpa |
| Ketinggian | < 2000J |
| Vibration Coefficient | 10 ~ 500Hz, 2G10min./1cycle, 60min.each along X, Y, Z axes |
| Perlindungan | Output Short Circuit, Output Overcurrent (110-150% of max load) |
| Dimensi (L x W x H) | Approx. 30mm x 19mm x 16.5mm (Refer to Figure 2) |
| Pensijilan | CE, UL |

Figure 2: HLK-2M03 Power Supply Module with approximate dimensions (30mm x 19mm x 16.5mm).
4. Persediaan dan Pemasangan
The HLK-2M03 module is designed for PCB mounting and requires careful wiring. Ensure all power is disconnected before proceeding with installation.
Konfigurasi 4.1 Pin
Refer to the module markings for correct pin identification:
- AC (x2): Input terminals for AC power (90-245Vac). These pins are interchangeable for live and neutral connections.
- -Vo: Negative output terminal (0V).
- +Vo: Positive output terminal (+3.3Vdc).

Rajah 3: Atas view of the HLK-2M03 module, indicating AC input and -Vo/+Vo output pins.
4.2 Langkah Pemasangan
- Pemutusan Kuasa: Ensure the main power supply is completely disconnected before handling the module.
- Melekap: Solder the module securely onto a printed circuit board (PCB) using the designated pin holes. Ensure proper alignment and mechanical stability.
- Pendawaian Input: Connect the AC input lines (Live and Neutral) to the two "AC" pins on the module. Observe local electrical codes and safety standards.
- Pendawaian Output: Connect the load requiring 3.3Vdc to the "+Vo" (positive) and "-Vo" (negative) output pins. Ensure correct polarity.
- Pengesahan: Double-check all connections for correctness and security to prevent short circuits or improper operation.
Amaran: Incorrect wiring can lead to damage to the module, connected devices, or pose an electrical hazard. If you are unsure, consult a qualified electrician or electronics technician.
5. Operasi
Once the HLK-2M03 module is correctly installed and wired, apply the specified AC input voltage (90-245Vac). The module will automatically convert this to a stable 3.3Vdc output. The module is designed for continuous operation within its specified environmental conditions and load limits.
- Ensure the connected load does not exceed the maximum output current of 600mA to prevent overcurrent protection activation or module damage.
- The module operates with natural cooling; ensure adequate airflow around the module if it is enclosed to prevent excessive heat buildup, especially under full load.
6. Penyelenggaraan
The HLK-2M03 power supply module is designed for long-term, maintenance-free operation. However, adhering to the following guidelines can help ensure its longevity:
- Keadaan Persekitaran: Operate the module within the specified temperature and humidity ranges. Avoid exposure to extreme conditions, direct sunlight, or corrosive environments.
- Kebersihan: Keep the module free from dust and debris. If cleaning is necessary, use a soft, dry brush or compressed air. Do not use liquid cleaners.
- Pemeriksaan Fizikal: Periodically inspect the module and its connections for any signs of physical damage, loose wiring, or discoloration.
- Pengudaraan: Ensure that any enclosure housing the module provides sufficient ventilation for natural cooling.
No user-serviceable parts are inside the module. Do not attempt to open or repair the module, as this will void any warranty and may pose a safety risk.
7. Penyelesaian masalah
If you encounter issues with your HLK-2M03 module, refer to the following common troubleshooting steps:
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Tiada keluaran voltage |
|
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| Keluaran voltage is unstable or low |
|
|
| Module repeatedly shuts down or restarts |
|
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8. Maklumat Keselamatan
Please read and understand all safety instructions before installing or operating the HLK-2M03 module. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Bahaya Elektrik: This module operates with high AC voltages. Always disconnect power before making any connections or performing maintenance.
- Kakitangan Berkelayakan: Installation and wiring should only be performed by qualified personnel familiar with electrical safety standards.
- Pengasingan: The module provides input-to-output isolation. Do not bypass this isolation.
- Persekitaran: Do not expose the module to water, moisture, or flammable materials. Ensure it is installed in a well-ventilated area.
- Perlindungan Lebihan: Do not exceed the specified output current (600mA). Overloading can cause damage or fire.
- Pembumian yang betul: Ensure the system incorporating this module is properly grounded according to local electrical codes.
9. Waranti dan Sokongan
9.1 Waranti
The manufacturer provides a warranty for this product. Specific warranty terms and duration (e.g., "1" year as indicated in specifications) are typically provided at the point of purchase or by the seller. Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by improper installation, misuse, unauthorized modifications, or operation outside of specified parameters.
9.2 Sokongan Teknikal
For technical assistance or inquiries not covered in this manual, please contact your product supplier or the manufacturer, HI-Link, through their official support channels. Provide your product model number (HLK-2M03) and a detailed description of the issue when seeking support.