
The MB105025 is the slimmest 100 x 50 mm size in the MB Series of two-tone fixed panel enclosures. It is a rugged instrument box for mounting printed circuit boards in hand-held, desktop or wall mount applications, and suits electronics hobbyists, OEM engineers and panel builders who need a low-height housing.
The enclosure is molded in polystyrene, with a smooth light gray lid (RAL 7035) over a smooth dark gray base (RAL 7012). The front and rear panels are an integral part of the bottom unit. Four cover screws (drawing call-out M3-0.5 x 14mm) thread into integrated brass inserts and sit hidden in a recess in the base, so the lid can be removed and refitted repeatedly.
Outside dimensions are 3.94 x 1.97 x 0.98 in (100 x 50 x 25 mm). Inside, the box offers 94 mm of length, 44 mm of width and 18 mm of depth. The solid lid gives an IP40 rating, and the material carries a UL94 HB flame rating.
Each MB105025 comes boxed with the box, lid, four cover screws and four P.C. board screws (M3 x 7 mm self-tapping for the internal standoffs). Recommended cover screw torque is 2.5 lbf-in (30 cN-m). The part is RoHS and REACH compliant, weighs 0.13 lbs (0.06 kg), and can be factory modified by milling, drilling or printing.
| Type | General Purpose |
| Series | MB Series Two Tone Fixed Panel Enclosures |
| Ventilated Lid | No |
| Long Description | enclosure - plastic |
| Short Description | MULTI BOX ENCLOSURE |
| Enclosure Family (Drawing) | MB1050 Regular Enclosure |
| Internal Depth | 18 mm |
| Internal Width | 44 mm |
| Size L X W X H | 3.94 in x 1.97 in x 0.98 in (100 mm x 50 mm x 25 mm) |
| Internal Length | 94 mm |
| Outside Depth (Ordering Table) | 25 mm |
| Outside Width (Ordering Table) | 50 mm |
| Outside Length (Ordering Table) | 100 mm |
| UPC | 623980135496 |
| UNSPSC | 39121301 |
| Part Number | MB105025 |
| Purchased Assembly Includes | Box, lid, 4 cover screws and 4 P.C. board screws |
| Solid Models | Available in STEP or IGES |
| Factory Modification | Milling, drilling, printing etc. available from the factory on request |
| Packaging Type | Box |
| Shipping Weight | 0.13 lbs (0.06 kg) |
| Color | Gray (two-tone) |
| Panels | Front and rear panels are an integral part of the bottom unit |
| Material | Polystyrene |
| Lid Finish | Smooth light gray (RAL 7035) |
| Bottom Finish | Smooth dark gray (RAL 7012) |
| Cover Fastening | Screws threaded into integrated brass inserts; screws hidden in a recess in the base |
| Internal Standoff Screws | Four M3 x 0.276" (7 mm) self-tapping screws |
| Cover Screw (Drawing Call-Out) | M3-0.5 x 14mm |
| Recommended Cover Screw Torque | 2.5 lbf-in (30 cN-m) |
| IP Rating | IP40 |
| Flame Rating | UL94 HB |
| Chemical Resistance Note | Some chemicals can damage or weaken plastic; see the manufacturer's Chemical Resistance Statement |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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94 mm long, 44 mm wide and 18 mm deep.
It has a solid lid and an IP40 rating.
The box, lid, 4 cover screws and 4 P.C. board screws. The series lists four M3 x 0.276" (7 mm) self-tapping screws for the internal standoffs.
Polystyrene with a UL94 HB flame rating.
Yes, the MB105040 shares the 100 x 50 mm footprint with a 40 mm depth.

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