TE Connectivity AMP MR (Miniature Rectangular) series, 640504-1, 20-position, 4-row, shrouded male header, 4.20 mm pitch, tin-plated phosphor bronze contacts, rated 6 A per circuit at 250 VAC, latch lock, through-hole solder, -55 °C to 105 °C.
| Parameter | Value |
|---|---|
| Series | MR (Miniature Rectangular) |
| Type | Male Pin |
| Mounting | Through Hole |
| Connector type | Header |
| Fastening type | Latch Lock |
| Voltage rating | 250VAC |
| Current rating | 6A |
| Operating temperature | -55°C ~ 105°C |
| Contact material | Phosphor Bronze |
| Insulation color | Black, Red |
| Insulation height | 0.531\" (13.50mm) |
| Insulation material | Polyamide (PA), Nylon |
| Parameter | Value |
|---|---|
| Material flammability rating | UL94 V-0 |
| Style | Board to Cable/Wire |
| Package | Bulk |
| Shrouding | Shrouded - 4 Wall |
| Termination | Solder |
| Applications | General Purpose |
| Contact shape | Circular |
| Rows | 4 |
| Pitch | 0.165\" (4.20mm) |
| Positions | 20 |
| Row spacing - mating | 0.165\" (4.20mm) |
| Contact finish - post | Tin |
| Contact length - post | 0.150\" (3.81mm) |
| Contact finish - mating | Tin |
| Contact length - mating | 0.220\" (5.59mm) |
It uses a 4.20 mm pitch, a common spacing for medium-current power and signal interconnects in industrial and general-purpose equipment.
This header mates with a corresponding MR series receptacle housing (crimp or IDC type) using the same 4.20 mm pitch and latch lock feature. Through-hole solder termination requires a 0.150-inch (3.81 mm) post length for the PCB hole.
Yes, it is a shrouded - 4 wall header.
Derate above 105 °C per the series derating curve.
The mating pitch is 0.165 inch (4.20 mm), with the same row-to-row spacing. This is the standard pitch for the MR series, matching the corresponding receptacle.