| Part Number: | ULO | - | MU492 | - | B | N | C | S | R |
|---|---|---|---|---|---|---|---|---|---|
| Explanation: |
Brand |
Model MU491 - Four-contact SMT socket |
Housing Colour B - Black |
Shell Plating 6 - Tin |
Contact Plating O - Selective gold flash |
Face or Mylar 1 - Mating-face type 1; MU491 only |
Packing R - Tape on reel; MU492 only |
MU491 is a four-contact compact socket with two selectable mating-face profiles. MU492 is a five-contact Mini USB socket with an optional Mylar pickup support. Both use SMT signal terminals and metal-shell mounting pads. Their mating profiles, contact counts and board layouts differ and should be selected by exact model.
| Characteristic | MU491 | MU492 |
|---|---|---|
| Interface and contacts | Compact female socket; 4 contacts; face type 1 or 2 | Mini USB female socket; 5 contacts |
| Signal termination | SMT | |
| PCB signal pitch | 0.8mm | |
| Rated current | 0.5A | |
| Rated voltage | 30V; AC/DC designation unspecified | |
| Contact resistance | ≤50mΩ | |
| Insulation resistance | 100MΩ; minimum/maximum designation unspecified | |
| Dielectric withstand test | 100VAC for 1 minute | |
| Insulator | PA66; material group I; UL94V-0 | |
| Contact material | Copper alloy | |
The dielectric test is separate from the working-voltage rating. A USB generation, data rate and specific mating counterpart are unspecified; the four-contact MU491 profile should not be substituted for the five-contact MU492 profile.
| Field | Code | Both models |
|---|---|---|
| Housing colour | B | Black |
| Shell plating | 6 | Tin |
| N | Nickel | |
| 8 | Full gold | |
| Contact plating | O | Selective gold flash |
| C | Selective 3µin gold |
The four fields after MU491 specify housing colour, shell plating, contact plating and mating-face type, in that order.
| Field | Code | Selection |
|---|---|---|
| Mating-face type | 1 | Type 1 profile |
| 2 | Type 2 profile |
Dimensions are in millimetres. The recommended PCB-layout tolerance is ±0.05mm. The two mating-face profiles are shown separately in the drawing.
| Dimension or feature | MU491 |
|---|---|
| Body length; overall length with contact tails | 6mm; 7.50mm |
| Rear contact projection | 1.5mm |
| Body width; inner transverse reference | 7.30mm; 6.60mm |
| Side body height; mating-face outer reference | 3.90mm; 4.50mm |
| Shell mounting-tab longitudinal extent | 2.80mm |
| Longitudinal references | 4.45mm; 3.60mm; 1mm |
| Contact-tail pitch | 0.80±0.1mm |
| Recommended signal pad arrangement | 4 pads at 0.80mm pitch; 2.40mm first-to-last centre span |
| Locating holes | 2 × Ø1mm; 3mm centres |
| Outer shell-pad span | 10mm |
| PCB longitudinal references | 5.50mm; 4.45mm; 3.60mm |
Individual signal-pad width and length are not dimensioned in this footprint.
The five fields after MU492 specify housing colour, shell plating, contact plating, Mylar support and packing type.
| Field | Code | Selection |
|---|---|---|
| Mylar support | S | With Mylar |
| X | Without Mylar | |
| Packing type | R | Tape on reel |
| B | Tube |
Dimensions are in millimetres. The recommended PCB-layout tolerance is ±0.05mm. The footprint uses five signal pads, four shell pads and two locating holes.
| Dimension or feature | MU492 |
|---|---|
| Overall length; longitudinal locating reference | 9.23mm; 5.90mm |
| Body width; overall width across shell tabs | 7.70mm; 9.90mm |
| Overall height; front inner vertical reference | 3.95mm; 3.10mm |
| Lower front width reference | 5.87mm |
| Contact pitch and first-to-last span | 0.80mm; 3.20mm |
| Shell-tab longitudinal references | 5.50mm centres; 1.50mm tab extent; 2.95mm rear reference |
| Side local references | 1mm; 0.19mm REF |
| Locating posts | 2 × Ø0.80mm; 4.40mm centres |
| Locating holes | 2 × Ø1mm; 4.40mm centres |
| Signal pads | 5 pads, 0.50mm wide × 3.10mm long; 0.80mm pitch |
| Shell pads | One pair 2mm × 3.30mm; one pair 2mm × 2.50mm; 8.90mm transverse centres |
| PCB edge references | 6.50mm from inner edge of the longer shell-pad pair; 5.20mm from locating-hole line; 1mm beyond the shorter shell-pad pair |
