For moisture-sensitive devices: two humidity grades, five sizes.
Choosing the grade
The JHSX-C series comes in a 1–10% RH grade (general precision electronics) and a 1–3% RH grade (very low humidity). Each grade is offered in five sizes, JHSX-C100 to JHSX-C1450. Unlike household dry boxes (30–60% RH), these cabinets dehumidify actively so the inside really stays below 10% RH. Both grades share the same dimensions, shelves and power; the difference is the precision of the dehumidifying module.
Models
| Model | Outside W×D×H (mm) | Inside W×D×H (mm) | Rated power | Max. power | Shelves |
|---|---|---|---|---|---|
| JHSX-C100 | 450×400×700 | 446×370×620 | 19 W | 133 W | 1 |
| JHSX-C320 | 900×450×1010 | 896×420×850 | 50 W | 280 W | 3 |
| JHSX-C540 | 600×700×1480 | 596×670×1300 | 65 W | 420 W | 3 |
| JHSX-C900 | 900×600×1850 | 896×570×1700 | 90 W | 560 W | 5 |
| JHSX-C1450 | 1200×700×1890 | 1196×670×1700 | 120 W | 840 W | 5 |
All five sizes are available in both the 1–10% RH and 1–3% RH grades.
Key features
| Feature | Description |
|---|---|
| ARM-based controller | Self-diagnosis, calibration reminder, alarm on abnormal status |
| Honeywell sensor | Temperature ±1 °C, humidity ±3% RH |
| Dual dehumidification | Active module plus chemical desiccant backup; humidity rises no more than 10% within 24 h after power loss |
| ESD coating | Whole cabinet 10⁶–10⁹ Ω |
| Structure | 1.2 mm steel, overlapping seal; 5.0 mm tempered glass door |
| Casters | 360° conductive casters, two with brakes |
| Shelves | Adjustable spacing for boards, reels or parts |
Typical uses
| Use | Grade | Note |
|---|---|---|
| BGA / precision ICs (MSL 2–3) | 1–10% RH | Floor life and bake conditions per the component maker’s datasheet |
| Opened SMT reels | 1–10% RH | Prevents moisture pickup that causes popcorning in reflow |
| Optics / precision parts | 1–10% RH | Prevents oxidation and coating damage |
| Highly sensitive MSDs (MSL 4 / 5 / 5a) | 1–3% RH | Floor life and bake conditions per the component maker’s datasheet |
| Solder paste, underfill | Not suitable | Paste needs 0–10 °C refrigeration, underfill −40 °C freezing |
FAQ
Industrial vs. camera dry box? Camera dry boxes usually hold 30–60% RH. JHSX-C actively dehumidifies to 1–10% or 1–3% RH. 30–60% RH cabinets cannot prevent popcorning of moisture-sensitive parts.
What is MSL? The moisture sensitivity level is printed on the moisture barrier bag; a higher number means more sensitive. Floor life after opening, per IPC/JEDEC J-STD-033:
| MSL | Floor life | Conditions |
|---|---|---|
| 1 | Unlimited | ≤30 °C / 85% RH |
| 2 | 1 year | ≤30 °C / 60% RH |
| 2a | 4 weeks | ≤30 °C / 60% RH |
| 3 | 168 h | ≤30 °C / 60% RH |
| 4 | 72 h | ≤30 °C / 60% RH |
| 5 | 48 h | ≤30 °C / 60% RH |
| 5a | 24 h | ≤30 °C / 60% RH |
| 6 | Bake before use | Reflow within the time on the label |
1–10% or 1–3% RH? As a rule of thumb, lower MSL parts use 1–10% RH and MSL 4 and above use 1–3% RH. Each IC maker sets its own storage conditions; follow the datasheet.
Past floor life? Re-bake the parts; do not just leave them in the cabinet. Bake temperature and time follow the IC maker. Stricter lines add a nitrogen cabinet. Related: programmable oven JHSXH-480.
How to size it? Size by the number of opened reels or trays under control at the same time, not by total stock.
Power use? Rated 19–120 W; up to 133–840 W while the dehumidifier runs. Real consumption depends on door openings and room humidity.
Full rules: IPC/JEDEC J-STD-033 (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). This page is a selection reference; follow the component maker’s datasheet and your QA procedures.
Request a quote
Tell us the grade, size and quantity. Request a quote →