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MDK55A1600V Anti-Reverse Diode Module 110A Photovoltaic DC Power Supply Blocking Diode
MDK55A1600V anti-reverse blocking diode module, 55-110A current rating, 1600V voltage rating. Glass passivated chip, electrical insulation between chip and baseplate (2500V AC). Prevents reverse current in PV combiner boxes. Ideal for solar PV systems, DC cabinets, inverter protection
Application features:
◆ Model
MDK55A1600V / MDK110A1600V
◆ Current Rating
55A / 110A (optional)
◆ Repetitive Peak Reverse Voltage (VRRM)
1600V (up to 3000V available)
◆ Peak Forward Voltage (VFM)
≤1.5V @ 170A
◆ Reverse Leakage Current (IRRM)
≤8mA
◆ Non-Repetitive Surge Current (IFSM)
1.30kA (10ms half sine wave)
◆ Insulation Voltage (Viso)
2500V AC (electrical insulation between chip and baseplate)
◆ Maximum Junction Temperature (Tjm)
150℃
◆ Thermal Resistance (Rjc)
0.70℃/W
◆ Mounting
M5/M6 screw fixing, heatsink required
MDK55A1600V Key Features
Electrical insulation between chip and baseplate, multiple modules can share one heatsink
German glass passivated chip, excellent temperature characteristics and power cycling capability
Press-pack structure, compact size, light weight
Low forward voltage drop, low power loss
MDK55A1600V Typical Applications
PV combiner box anti-reverse protection
Photovoltaic DC cabinet / DC power supply
Solar inverter protection
Telecom base station DC power supply
UPS uninterruptible power supply
MDK55A1600V Key Advantages
Prevents reverse current from battery panels at night or during shading
Multiple modules can be paralleled for higher current capacity
Industrial-grade reliability for long-term outdoor operation
Compliant with photovoltaic power station standards
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FAQ
1. What is the MDK55A1600V Anti-Reverse Diode Module?
The MDK55A1600V is a dual common-cathode anti-reverse diode module specifically designed for photovoltaic systems, featuring a plastic package with through-hole mounting. Its primary function is to prevent reverse current from flowing from the battery back to the solar panels when they are not generating power, avoiding energy loss and component damage. It also prevents reverse current flow between different branches of the PV array.
2. What are the key specifications of the MDK55A1600V module?
Average Forward Current (IF(AV)) : 55A (180° half sine wave, 50Hz, single-side cooling, Tc=100℃)
Non-Repetitive Peak Surge Current (IFSM) : 1.30kA (10ms base width, half sine wave)
3. What package does the MDK55A1600V module use?
It uses a plastic package with module outline 101F and weight of approximately 0.12kg. It features 3 screw terminals with a mounting hole diameter of 6.2mm/0.24". Mounting torque: 4N·m for M5 screws, 6N·m for M6 screws.
4. What applications is the MDK55A1600V module suitable for?
It is primarily used in PV combiner boxes, PV inverters, and PV DC distribution cabinets. Specific applications include PV string reverse current protection, new energy battery charging/discharging, AC-to-DC charging piles, UPS systems, frequency converters, and AC/DC motor control.
5. What development tools support the MDK55A1600V module?
This is a passive power device that requires no programming or software development tools. Designers should refer to the product datasheet for circuit design and thermal calculations. A heatsink is required for installation — at 55A continuous current, forward voltage drop is approximately 0.7V with power loss of about 38.5W. A heatsink is mandatory when ambient temperature exceeds 40℃.
6. What is the operating temperature range of the MDK55A1600V module?
The junction temperature (Tj) ranges from -40℃ to 150℃, with a storage temperature (Tstg) of -40℃ to 125℃. Ambient temperature should not exceed 40℃. The module maintains stable performance without derating under high-temperature and high-irradiation conditions.
7. What is the insulation performance of the MDK55A1600V module?
The chip is electrically insulated from the base plate, with insulation voltage of 2500V ~ 3000VAC. The insulation voltage between module terminals and the copper base plate exceeds 3.1KV RMS. This allows multiple modules to be mounted on the same heatsink or on grounded enclosures.
8. What should be noted when installing the MDK55A1600V module?
Heatsink is mandatory: Power dissipation is approximately 38.5W at 55A continuous current
Through-hole mounting is used, with screw terminal connections
Chip is electrically insulated from the base plate — multiple modules can share the same heatsink
9. What is the difference between MDK55A1600V and ordinary diodes?
Diffusion structure: More stable than point-contact diodes with stronger surge current capability
High-temperature stability: No derating under high-temperature/high-irradiation conditions, with over 40% improved stability
Specialized purpose: Designed specifically for PV system reverse current protection, physically blocking reverse current
High reliability: Uses German glass-passivated chip soldering with excellent temperature characteristics and power cycling capability
10. What interfaces and standards does the MDK55A1600V module support?
Electrical interface: 3 screw terminals (dual common-cathode inputs + common-anode output)
Mounting interface: M5/M6 screw mounting holes, 6.2mm diameter
Certifications: Products are TUV Rheinland and CE certified
Environmental standard: ROHS compliant
Applicable standards: Meets technical requirements for DC-side reverse protection in photovoltaic systems
- 原产地:
- Origin
- 品牌:
- QXW
- 型号:
- MDK55A1600V
- 系列:
- 模块
- 特征:
- -
- 安装方式:
- 标准
- 尺寸/尺寸:
- -
- 描述:
- 二极管模块 MDK55A1600V
- 应用:
- 通用型
