| Specification |
|---|
| Manufacturer | Penn Engineering |
| Manufacturer's Part Number | SMTSOB-4.2-3ET |
| Description | SMTSOB-4.2-3ET ReelFast® microPEM® Surface Mount Nuts / Standoffs |
| Length | 3 mm ±0.13 mm |
| Material Specification | Brass |
| Finish Specification | Electro-Plated Tin, ASTM B545, Class A with Clear Preservative Coating, Annealed |
| Min. Sheet Thickness | 1.53 mm |
| For Use In Sheet Hardness | Not Applicable |
| A | 1.53 mm Max. |
| C | 6.22 mm Max. |
| E | 8.74 mm ± 0.13 mm |
| Hole Size in Sheet | 6.35 mm +0.08 |
| øD - Min. Solder Pad | 9.37 mm |
| Parts Per Reel | 800 |
| Reel Pitch | 16 mm |
| Reel Size | 330 mm |
| Tape Width | 24 mm |
| Reel Standard | Conform to EIA-481 |
| Special Note 1 | The tin deposit on type SMTSOB meets the requirements of ASTM B545, Class A and although the copper and nickel barrier layers used under the tin do not strictly comply with ASTM B545 thickness requirements they have proven effective at preventing zinc migration and providing the specified solderable shelf life. |
