The 1590LLB is the shallowest of the small square 1590 Series diecast aluminum enclosures, measuring 1.99 in x 1.99 in x 0.98 in (51 mm x 51 mm x 25 mm). It shares the 51 mm footprint of the 1590LB but is 25 mm tall rather than 31 mm, making it well suited to thin boards, small sensors and slim modules.
From the drawing, outside dimensions are 50.50 mm [1.988 in] square and 25.00 mm [0.984 in] high. Inside, it provides 45.63 mm [1.796 in] of length and width and 21.00 mm [0.827 in] of height. The manufacturer lists a maximum P.C. board size of 44.83 mm x 44.83 mm, and side walls are drafted at 2° or less for easy board mounting.
The box and lid are diecast aluminum alloy, tough yet easy to machine. This natural version is vibra finished for a smooth surface without sharp edges. A lap joint where the lid meets the box protects against dust and splashing water, and the standard 1590LLB is designed to meet IP54. It has no mounting flanges; see the 1590LLBF for a flanged bottom plate.
Supplied with the box, lid and 4 cover screws in factory-tapped 6-32 UNC holes, with a recommended torque of 50-55 cN.m [71-78 ozf.in]. The optional 1590LBGASKET kit upgrades it to IP65 with lid screws at 25-30 cN.m [36-43 ozf.in], and a water-tight 1590WLLB is offered. RoHS and REACH compliant; 0.15 lbs (0.07 kg), shrink wrapped.
| Type | Die-cast box |
| Series | 1590 Series Diecast Aluminum Enclosures |
| Version | Standard |
| Description | enclosure - diecast |
| Part Number | 1590LLB |
| Mounting Style | No mounting flanges |
| Short Description | 50 X 50 X 25MM ALUMINUM BOX |
| Lid Height | 0.16" (4 mm) |
| Inside Width | 45.63 mm [1.796 in] |
| Inside Height | 21.00 mm [0.827 in] |
| Inside Length | 45.63 mm [1.796 in] |
| Ordering Table Width | 2.01 in (51 mm) |
| Max. P.C. Board Width | 44.83 mm |
| Ordering Table Height | 0.98 in (25 mm) |
| Ordering Table Length | 2.01 in (51 mm) |
| Side Wall Draft Angle | 2° or less |
| Max. P.C. Board Length | 44.83 mm |
| Nominal Size (L X W X H) | 1.99 in x 1.99 in x 0.98 in (51 mm x 51 mm x 25 mm) |
| Overall Box Width (Drawing) | 50.50 mm [1.988 in] |
| Overall Box Height (Drawing) | 25.00 mm [0.984 in] |
| Overall Box Length (Drawing) | 50.50 mm [1.988 in] |
| Related Versions | Black 1590LLBBK; flanged bottom 1590LLBF; flanged lid 1590LLBFL; water-tight 1590WLLB |
| Standard Cover Screws | 1590MS100 plated, 1590MS100BK black (6-32 x 1/2", Pkg 100) |
| Liquid Resistant Cover Screws | 1590WMS100 stainless, 1590WMS100BK black stainless (6-32 x 1/2" with O-ring, Pkg 100) |
| UPC | 623980808796 |
| UNSPSC | 39121301 |
| Packaging Type | shrink wrap |
| Shipping Weight | 0.15 lbs (0.07 kg) |
| Color | Natural Aluminum |
| Finish | Unpainted, vibra finished (smooth surface, no sharp edges) |
| Included | Box, lid and 4 cover screws |
| Material | Aluminum (Die-Cast Alloy) |
| CAD Models | Solid models available in STEP or IGES |
| Cover Screw Thread | 4X 6-32 UNC, factory-tapped holes |
| Joint Construction | Lap joint where lid and box meet |
| Factory Modification | Milling, drilling, printing etc. available by factory quote |
| Recommended Lid Screw Torque | 50-55 cN.m [71-78 ozf.in] |
| Recommended Torque With Gasket | 25-30 cN.m [36-43 ozf.in] |
| IP Rating | IP54 |
| Water-Tight Version | 1590WLLB (designed to meet IP65, gasket supplied loose) |
| Optional Replacement Gasket Kit | 1590LBGASKET (upgrades IP54 to IP65) |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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45.63 mm [1.796 in] inside length and width and 21.00 mm [0.827 in] inside height, per the drawing.
Maximum P.C. board size is 44.83 mm x 44.83 mm.
The 1590LBGASKET, which upgrades the enclosure to IP65 when properly installed.
Yes, 4 cover screws in factory-tapped 6-32 UNC holes.
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