FH453K and FH453L have a 1mm contact grid, a 2.1mm body-height reference and two rows of 2–40 contacts per row. FH453L adds underside locating posts and a selective gold-flash option. Select the exact version before assigning PCB locating holes or specifying the contact finish.
| Characteristic | Both models |
|---|---|
| Contact arrangement | 2×2–2×40; 4–80 total contacts |
| Mating pitch and row centres | 1mm × 1mm |
| Rated current | 3A |
| Contact resistance | ≤20mΩ |
| Insulation resistance | ≥1000MΩ |
| Dielectric withstand test | 500VAC RMS for 60 seconds |
| Operating temperature | -45°C to +110°C |
| Retention | ≥500gf |
| Insulator | High-temperature material with 30% glass fibre; base polymer unspecified; material group I; UL94V-0 |
| Contacts / housing colour | Copper alloy / black |
The withstand test does not specify an operating-voltage rating. A storage-temperature range and soldering profile are unspecified.
For either model, the fields follow the model code in this order: contact arrangement, contact finish, housing colour, pickup support and packing type.
| Field | FH453K | FH453L |
|---|---|---|
| Contacts | 2×2–2×40 | 2×2–2×40 |
| Contact finish | 8: full gold flash; 6: full tin | 8: full gold flash; 6: full tin; 0: selective gold flash |
| Housing colour | B: black | B: black |
| Pickup support | S: with; X: without | S: with; X: without |
| Packing | T: tray; R: tape on reel; B: tube | T: tray; R: tape on reel; B: tube |
| Locating posts | Not shown | Included in the FH453L outline; no separate post-selection code |
N is the number of contacts per row, or half the total contacts. Body-length and contact-span formulas below give dimensions in millimetres. The PCB pad pattern is shared, while FH453L requires the illustrated locating holes.
| Reference | FH453K | FH453L |
|---|---|---|
| Body length | (N+0.5)mm | (N+0.5)mm |
| Contact span | (N−1)mm | (N−1)mm |
| Along-row tail pitch | 1.00±0.1mm | 1.00±0.1mm |
| Body width / height | 2.50mm / 2.10mm | 2.50mm / 2.10mm |
| Side seating reference | 2.25mm | 2.25mm |
| Terminal spread / section | 3.90mm / 0.10×0.30mm | 3.90mm / 0.10×0.30mm |
| PCB pads | 0.60mm width; 1mm pitch; 1.50mm inner gap and 4.50mm outer transverse extent | 0.60mm width; 1mm pitch; 1.50mm inner gap and 4.50mm outer transverse extent |
| Locating posts | None illustrated | Ø0.40mm; 0.70mm projection; centre spacing (N−2)mm |
| PCB locating holes | None illustrated | Two Ø0.60mm holes at (N−2)mm centre spacing |
| PCB layout tolerance | ±0.05mm | ±0.05mm |
