| Part Number: | ULO | - | DR478 | - | B | N | 0 | S |
|---|---|---|---|---|---|---|---|---|
| Explanation: |
Brand ULO - ULO |
Model DR478 - 24+1 right-angle PCB receptacle |
Colour W - White |
Shell Plating N - Nickel |
Contact Plating 0 - Selective gold flash |
Screws X - Without screw |
The DR478 and DR479 family contains five through-hole PCB receptacles. Choose the contact face and mounting orientation together; the drawings preserve each model's tail geometry and rear-body arrangement.
| Model | Contact layout | PCB orientation | Mechanical arrangement |
|---|---|---|---|
| ULO-DR478 | 24+1 | Right angle | Socket with bent PCB tails |
| ULO-DR479 | 24+5 | Right angle | Socket with additional-contact tails |
| ULO-DR479A | 24+5 | Right angle | Rear shielding over the termination area |
| ULO-DR479B | 24+5 illustrated | Vertical | Straight tails and a 5mm rear-body reference |
| ULO-DR479C | 24+5 illustrated | Vertical | Extended rear support structure with a 10mm reference |
| Characteristic | Value |
|---|---|
| Rated current | 1A |
| Contact resistance | ≤50mΩ |
| Insulation resistance | 1000MΩ |
| Dielectric withstand test | 500VAC RMS for 1 minute |
| Insulator | PBT with 30% glass fibre, material group I |
| Material flammability | UL94V-0 |
| Contact material | Copper alloy |
Working voltage, operating temperature and soldering profile are unspecified. Contact layout alone does not specify video bandwidth or supported resolutions.
All five models use four ordering fields: insulator colour, shell finish, contact finish and screw option.
| Field | Code | Selection |
|---|---|---|
| Insulator colour | W / B / V | White / black / ivory |
| Shell finish | N / 6 | Nickel / tin |
| Contact finish | 0 | Selective gold flash |
| Screw option | X | Without screw |
| Screw option | S | With UNC 4-40 screw |
| Screw option | D | Rivet type with screw supplied in bulk packaging |
The separate UNC 4-40 screw drawing gives an 11.8mm total reference and 4.8mm head reference.
Dimensions below are in millimetres. The rear views show the connector's contact and structural references. They are not a complete PCB drill specification.
| Reference | DR478 | DR479 | DR479A |
|---|---|---|---|
| Overall flange width | 37.3 | 37.3 | 37.3 |
| Mounting-centre span | 32.51 | 32.51 | 32.51 |
| Mating-face width | 24.03 | 24.03 | 24.03 |
| Mating-face / flange height | 7.6 / 9.91 | 7.6 / 9.91 | 7.6 / 9.91 |
| Body depth | 18.03 | 18.03 | 18.4 |
| Mating projection | 6.4 | 6.4 | 6.4 |
| Tail projection | 2.81 | 2.81 | 2.81 |
| Front-view structural span / offset | 30.73 / 2.9 | 30.73 / 2.9 | 30.73 / 2.9 |
| Main contact pitch / seven-interval span | 1.905 / 13.335 | 1.905 / 13.335 | 1.905 / 13.335 |
| Main row pitch / outer row span | 1.905 / 3.81 | 1.905 / 3.81 | 1.905 / 3.81 |
| Rear hole reference / centre span | Ø1.7 / 19.05 | Ø1.7 / 19.05 | Ø1.7 / 19.05 |
| Rear-view longitudinal references | 5.83 and 2.53 | 5.83 and 3.3 | 5.83 and 3.3 |
| Additional-contact pitch / outer span | Not applicable | 2.54 / 5.08 | 2.54 / 5.08 |
| Rear shield width reference | Unspecified | Unspecified | 27.9 |
DR478 has the 24+1 mating face and its own right-angle tail arrangement. The 2.53mm rear-view reference belongs to this model and is retained separately from DR479.
DR479 and DR479A include the additional-contact section. DR479A adds rear shielding and has a larger 18.4mm body-depth reference. The additional-contact tail layout includes a 19.05mm horizontal span reference and separate 2.54mm spacing.
Both vertical model drawings illustrate the 24+5 face, 37.3mm flange width, 24.03mm face width, 7.6mm face height, 9.91mm flange height and 6.4mm mating projection. Their main-contact pitch is 1.905mm with a 3.81mm outer row span. Rear views show a 13.335mm main-row span, 19.05mm additional-contact reference, 2.54mm additional-contact pitch and 32.51mm mounting-centre span.
| Vertical-model reference | DR479B | DR479C |
|---|---|---|
| Rear-body or support extent | 5mm | 10mm |
| Individual signal-tail width | 0.50mm | 0.50mm |
| Signal-tail projection reference | 3mm | 3mm |
| Body-to-tail-end extent | 8mm | See separate 10mm body and 3mm tail references |
| Additional retention projection reference | Unspecified | 3.70mm |
