PL420 sockets have 1.27mm package-contact pitch and are available in through-hole and SMT constructions. The 20, 28, 44, 52, 68 and 84-contact bodies are square; the 32-contact version has a rectangular outline. Match the package contact count and the PCB termination before selecting the profile.
| Construction | Contact counts | Height and terminal details | PCB connection |
|---|---|---|---|
| Through-hole | 20, 28, 32, 44, 52, 68, 84 | 8.15mm body height; 3.20mm projecting leads | Ø0.80mm holes on the illustrated 2.54mm grid |
| SMT | 20, 28, 32, 44, 52, 68, 84 | Profile H: 3.81mm, 4.3mm or 4.6mm | Model-specific surface-mount pad pattern |
The 1.27mm mating-contact pitch is distinct from the through-hole PCB grid. SMT profiles do not apply to the taller through-hole housing.
| Characteristic | Specification |
|---|---|
| Insulation resistance | ≥1000MΩ |
| Contact impedance | ≤20mΩ |
| Withstand test | 500VAC for 1 minute |
| Operating temperature | 0°C to +85°C |
| Storage temperature | -20°C to +70°C |
| Housing family | Thermoplastic; PPS specified in the SMT ordering options |
| Insulating material group | I |
| Flammability classification | UL94V-0 |
| Contact material | Copper alloy |
| Rated operating voltage and current | Unspecified |
The one-minute withstand test does not define a continuous operating-voltage rating.
| Field | Code and meaning |
|---|---|
| Contact count | 20, 28, 32, 44, 52, 68, 84 |
| Housing material | S: PPS |
| Mounting type | S: SMT |
| Housing colour | K: black; N: brown |
| Contact plating | T1: tin |
| Profile H | 1: 3.81mm; S: 4.3mm; L: 4.6mm |
| Packaging | A: tube; R: tape on reel |
The ordering sequence defines SMT versions. A through-hole ordering suffix, resin grade, finish and packaging selection are not separately specified.
These A/B/C/D/E references belong to the upper through-hole drawing. A is the end-contact span along a side, B is overall body width, C is the lead-row span, D is the diagonal dimension and E is the inner reference width. Values are in millimetres.
| Contacts | A ±0.2mm | B ±0.4mm | C ±0.2mm | D ±0.2mm | E ±0.2mm |
|---|---|---|---|---|---|
| 20 | 5.08 | 15.56 | 10.16 | 18.46 | 9.16 |
| 28 | 7.62 | 18.10 | 12.70 | 22.05 | 11.70 |
| 44 | 12.70 | 23.18 | 17.78 | 29.24 | 16.78 |
| 52 | 15.24 | 25.72 | 20.32 | 32.83 | 19.32 |
| 68 | 20.32 | 30.80 | 25.40 | 40.02 | 24.40 |
| 84 | 25.40 | 35.88 | 30.48 | 47.20 | 29.48 |
The separate rectangular outline has unequal side dimensions. Its PCB layout is shown separately from the square-body pattern.
| Feature | Dimensions |
|---|---|
| Outer body sides | 18.10mm × 20.64mm |
| Inner reference sides | 11.70mm × 14.24mm |
| End-contact spans | 7.62mm and 10.16mm |
| Lead-row spans | 12.70mm and 15.24mm |
| Diagonal | 23.91mm |
| Body height | 8.15mm |
| Projecting leads | 3.20mm |
The lower drawing uses a different reference scheme: A and B are the outer body sides, C and D are the end-contact spans, and E is the diagonal. Values are in millimetres.
| Contacts | A ±0.2mm | B ±0.4mm | C ±0.2mm | D ±0.2mm | E ±0.2mm |
|---|---|---|---|---|---|
| 20 | 15.24 | 15.24 | 5.08 | 5.08 | 16.70 |
| 28 | 17.78 | 17.78 | 7.62 | 7.62 | 20.30 |
| 32 | 17.78 | 20.32 | 7.62 | 10.16 | 22.50 |
| 44 | 22.86 | 22.86 | 12.70 | 12.70 | 27.50 |
| 52 | 25.40 | 25.40 | 15.24 | 15.24 | 31.10 |
| 68 | 30.82 | 30.82 | 20.32 | 20.32 | 38.30 |
| 84 | 35.90 | 35.90 | 25.40 | 25.40 | 45.50 |
The combined drawing retains the through-hole square pattern, the 32-contact rectangular pattern and the SMT pad pattern. Through-hole holes are Ø0.80mm with a 2.54mm grid; the SMT pattern uses the 1.27mm contact pitch. Recommended layout tolerance is ±0.05mm. Use the correct construction's reference dimensions and orientation marks.
