Professional environmental test chamber, dry storage cabinet and drying oven manufacturer

1%-5%RH Electronic Dry Cabinet TDU435F

<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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Description

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.

Humidity Issues in the Electronic Manufacturing Industry

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.

Application - TDU98BFD

How to prevent microcracks?

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.

Features

  • Humidity control
  • ESD safe function
  • Grounding function
  • Digital control and monitoring
  • Over-humidity alarm and door-opening alarm are available

Video

Specification

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

Working Principle

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.

Dry Box For Electronic Components 9

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.

Drying And Storage Cabinet 9

Application 

Dry cabinet for PCB plays an important role in:

  • Electronic and semiconductor manufacturing service
  • R&D laboratories & Institutes
  • Precision instruments
  • Medical
  • Communication

Advantages

  • Powerful desiccant with +15 years of service life
  • Electronically controlled dehumidifying system
  • User-friendly interface
  • No consumables, no need for replacement
  • ISO 9001:2015 and CE certified
Dry Box For Electronic Components 11

Recommended storage humidity

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

Q&A

Q: How do I calibrate the humidity settings? 

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.

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