| Part Number: | ULO | - | DB424 | - | 09 | M | P | B | Si | P |
|---|---|---|---|---|---|---|---|---|---|---|
| Explanation: |
Brand ULO - ULO |
Model DB424 - IDC connector |
Contacts 09 - 9 contacts |
Connector Type M - Male |
Strain Relief / Latch P - With strain relief; DB424 and DB424C |
Colour U - Blue |
Contact Plating Si - Selective gold flash |
Rivet P - Threaded UNC #4-40; DB424 and DB424D |
The ULO-DB424 family uses IDC terminations with standard D-sub mating interfaces. Each model offers 9, 15, 25 or 37 contacts and male or female versions. Select the retention and cover arrangement with the connector model.
| Model | Construction | Selectable retention or hardware | Insulator material |
|---|---|---|---|
| ULO-DB424 | IDC connector | With or without strain relief; threaded or unthreaded rivet | Thermoplastic |
| ULO-DB424B | IDC connector with latch | Latch support included in the ordering options | PBT with 30% glass fibre |
| ULO-DB424C | IDC connector with shielding and cover | With or without strain relief | PBT with 30% glass fibre |
| ULO-DB424D | IDC connector with rivet and latch | With or without latch support; threaded or unthreaded rivet | PBT with 30% glass fibre |
| Characteristic | All four models |
|---|---|
| Insulation resistance | ≥1000MΩ |
| Contact impedance | ≤20mΩ |
| Dielectric withstand test | 500VAC for 1 minute |
| Operating temperature | 0°C to +85°C |
| Storage temperature | -20°C to +70°C |
| Durability | 300 cycles |
| Insulation material group | I |
| Material flammability grade | UL94V-0 |
| Contact material | Copper alloy |
| Shell material | Steel |
Rated current, working voltage and conductor-size limits are unspecified. The dielectric withstand value is a one-minute test condition.
| Field | Code and selection | Models |
|---|---|---|
| Contact count | 09: 9; 15: 15; 25: 25; 37: 37 | All four |
| Interface | M: male; F: female | All four |
| Insulator colour | U: blue; B: black | All four |
| Contact plating | Si: selective gold flash | All four |
| Strain relief | P: with; N: without | DB424 and DB424C |
| Latch support | P: with | DB424B |
| Latch support | P: with; N: without | DB424D |
| Rivet type | P: threaded, UNC #4-40; N: unthreaded | DB424 and DB424D |
Values are in millimetres. A is the IDC contact-span reference, B the flange length, C the mounting-centre distance and D the mating width. Male and female D dimensions are listed separately.
| Contacts | A ±0.1 | B ±0.2 | C ±0.2 | D male ±0.2 | D female ±0.2 | Cover E ±0.2, DB424 / DB424C | Latch span, DB424B / DB424D |
|---|---|---|---|---|---|---|---|
| 9 | 10.16 | 30.80 | 24.99 | 17.90 | 16.33 | 19.00 | 19.90 |
| 15 | 17.78 | 39.14 | 33.32 | 26.50 | 24.66 | 27.34 | 28.24 |
| 25 | 30.48 | 53.04 | 47.04 | 40.00 | 38.38 | 41.24 | 42.14 |
| 37 | 45.72 | 69.32 | 63.50 | 56.50 | 54.84 | 57.52 | 58.42 |
The mating contacts use 2.77mm pitch and 2.84mm row spacing. DB424 and DB424D additionally show a 1.385±0.10mm mating-contact stagger and IDC detail references of 2.54mm, 1.27mm and 2.15mm. The IDC references describe the termination geometry; cable conductor and insulation limits remain unspecified.
Choose the strain-relief and rivet fields separately. Male and female drawings show 6.1mm and 5.8mm mating projections, a 2.90mm rear reference, and a cover with 10.30mm width and 12.00mm overall height references. The upper-cover section also identifies 2.15mm, 1.55mm, 3.40mm and 4.40mm details.


DB424B provides latch support and a separate wire latch. The latch drawing shows an 11.10mm height, 3.60mm end projection and Ø1.20mm wire. The connector has two Ø3.00mm mounting holes, 6.00mm male or 5.80mm female mating projections and a 0.80mm rear reference.


DB424C combines the shielding construction with an upper cover and selectable strain relief. It has two Ø3.00mm mounting holes, 6.00mm male or 5.80mm female mating projections and a 0.80mm rear reference. Its upper cover uses the E dimensions above, with a 10.30mm width and 12.00mm height reference.


| Model | Item | Part | Material | Finish or grade |
|---|---|---|---|---|
| DB424B | 1 | Latch | Stainless steel | Unspecified |
| DB424C | 1 | Upper cover | PBT with 30% glass fibre | UL94V-0 |
| DB424B / DB424C | 2 | Middle cover | PBT with 30% glass fibre | UL94V-0 |
| DB424B / DB424C | 3 | Housing | PBT with 30% glass fibre | UL94V-0 |
| DB424B / DB424C | 4 | Washer | Steel | Tin plated |
| DB424B / DB424C | 5 | Shell | Steel | Nickel plated |
DB424D offers both latch-support and rivet-type fields. Its latch has a 10.50mm height reference, 3.60mm end projection and Ø1.20mm wire. This differs from the DB424B latch height even though their contact-count-dependent spans match. Male and female mating projections are 6.1mm and 5.8mm, with a 2.90mm rear reference.

