<5% Electronic Dry Cabinet
435L Desiccant Cabinet Low Humidity Storage Cabinet Dry Box
Model: TDU435F
Color: Black, ESD safe
Humidity Range: <5%RH automatic
Interior Dimension: W898×D572×H848mm
Exterior Dimension: W900×D600×H1010mm
Packing Dimension: W1000×D700×H1160mm
Shelves: 3pcs
Voltage: 110V/220V/230V/240V 50/60HZ
Remark: White color is not ESD safe
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A dry cabinet for PCB (Printed Circuit Boards) provides a controlled, low-humidity environment to protect PCBs from moisture damage, mold, and electrostatic discharge (ESD). These cabinets are essential for storing moisture-sensitive devices (MSDs) and unpopulated PCBs to maintain their quality, reliability, and performance, especially in electronics manufacturing and assembly settings.
High humidity leads to moisture absorption in electronic components during the reflow process. Once microcracks are formed, moisture is drawn deeper into the material through capillary action, further exacerbating the cracks. In semiconductors and high-precision electronics, this can cause additional contaminants and moisture to enter sensitive areas, degrading performance.

Ultra Low Humidity Storage: Storing electronics in controlled, low-humidity environments (such as PCB storage dry cabinets) can reduce exposure to moisture.
Protective Conformal Coatings: Conformal coatings applied over circuit boards can protect components from moisture.
Moisture-Resistant Materials: Using adhesives with low moisture absorption rates in manufacturing can prevent swelling and hydrolysis-induced weakening.
Model | Capacity | Interior Dimension (W×D×H,mm) | Exterior Dimension (W×D×H,mm) | Gross Weight (KG) | Average Power (Watts) | Max. Loading /Shelf(KG) |
TDU98 | 98L | 446×372×598 | 448×400×688 | 31 | 6 | 50 |
TDU98F | 98L | 446×372×598 | 448×400×688 | 31 | 6 | 50 |
TDU160 | 160L | 446×422×848 | 448×450×1010 | 43 | 10 | 50 |
TDU160F | 160L | 446×422×848 | 448×450×1010 | 43 | 10 | 50 |
TDU240 | 240L | 596×372×1148 | 598×400×1310 | 57 | 10 | 50 |
TDU240F | 240L | 596×372×1148 | 598×400×1310 | 57 | 10 | 50 |
TDU320 | 320L | 898×422×848 | 900×*450×1010 | 70 | 40 | 80 |
TDU320F | 320L | 898×422×848 | 900×450×1010 | 70 | 40 | 80 |
TDU435 | 435L | 898×572×848 | 900×600×1010 | 82 | 40 | 80 |
TDU435F | 435L | 898×572×848 | 900×600×1010 | 82 | 40 | 80 |
TDU540 | 540L | 596×682×1298 | 598×710×1465 | 95 | 60 | 80 |
TDU540F | 540L | 596×682×1298 | 598×710×1465 | 95 | 60 | 80 |
TDU718 | 718L | 596×682×1723 | 598×710×1910 | 105 | 60 | 80 |
TDU718F | 718L | 596×682×1723 | 598×710×1910 | 105 | 60 | 80 |
TDU870 | 870L | 898×572×1698 | 900×600×1890 | 130 | 80 | 100 |
TDU870F | 870L | 898×572×1698 | 900×600×1890 | 130 | 80 | 100 |
TDU1436-4 | 1436L | 1198×682×1723 | 1200×710×1910 | 189 | 120 | 100 |
TDU1436F-4 | 1436L | 1198×682×1723 | 1200×710×1910 | 189 | 120 | 100 |
TDU1436-6 | 1436L | 1198×682×1723 | 1200×710×1910 | 189 | 120 | 100 |
TDU1436F-6 | 1436L | 1198×682×1723 | 1200×710×1910 | 189 | 120 | 100 |
Option:
1) Over-humidity alarm buzzer
2) Door-opening alarm buzzer
3) Three-color alarm flashing light
4) Data logger with USB interface
Dry cabinet for PCB, or dry box for electronics, use the patented dehumidifying technology. The dehumidifying system is controlled by a microcomputer. When the internal humidity is high, it starts to absorb moisture; when the humidity reaches the set value, it stops absorbing water and discharges water outside. This process is automatic, and by maintaining low humidity and stable conditions, dehumidifying dry cabinets effectively protect valuable and sensitive items from the damage of moisture.

This chart shows, in the ambient 25 degree C, humidity 50%RH, open door 30 seconds and then close, the humidity can recover to the set point within 30 minutes.

Application
Dry cabinet for PCB plays an important role in:

Relative Humidity | Suggested storage items |
55%~45%RH | Tapes, CD, lenses, microscope,photograph, oil paintings, stamps, coins, antiques, leather goods, negative, drawings, album, slides, industrial design, etc |
45%~35%RH | Optical lenses, precision instruments, camera, lenses, measuring tools,capacitors, batteries, EI, light sources, crystal, PCB, detector, charger, microscopes, endoscopes, electronic appliance, magnetic tape, chemical, tea, coffee, seeds, cigarette, etc. |
35%~20%RH | Samples,filters, precision dies,measurement instruments, pollen, all electronic components, PCB, wafer, metallic powders, semiconductors, medical supplies etc. |
10%~20%RH | Electronic components, PCB, crystal, chemical, LED and other complicated electronic components, etc. |
10%-1%RH | IC, BGA, copper, silver, and materials very sensitive to humidity,etc |
A: We calibrate all dry cabinets before shipment, there is offset setting in our controller, pls contact us for guidance.
A: The dehumidifying unit lifespan is +15 years, it’s fixed onto the dry storage cabinet by screws, pls use a screwdriver to replace it, it’s easy to operate.
A: Flammable, explosive and corrosive products.
A: No consumables, no need replacement.
A: Yes, drying cabinets are used for long-term uninterrupted storage.
For more details about dry cabinet for PCB, please send an email to sales@netdrycabinet.com. We will reply to you as soon as possible.
Have any questions about our products?
Don’t hesitate to contact us. NetDry’s Product Specialists are very happy to help you and provide professional and reliable solutions to help you solve various problems.
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