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| PartNumber | MTSW-121-08-G-D-188 | MTSW-121-08-G-S-300 | MTSW-121-08-F-D-315 |
| Description | Headers & Wire Housings .100" Variable Post Height Terminal Strip | Headers & Wire Housings .100" Variable Post Height Terminal Strip | MODIFIED .025 SQUARE POST TERMINAL |
| Manufacturer | Samtec | Samtec | - |
| Product Category | Headers & Wire Housings | Headers & Wire Housings | - |
| RoHS | Y | Y | - |
| Product | Headers | Headers | - |
| Type | Pin Strip | Pin Strip | - |
| Number of Positions | 42 Position | 21 Position | - |
| Pitch | 2.54 mm | 2.54 mm | - |
| Number of Rows | 2 Row | 1 Row | - |
| Mounting Style | Straight Pin | Straight Pin | - |
| Termination Style | Through Hole | Through Hole | - |
| Mounting Angle | Straight | Straight | - |
| Contact Gender | Pin (Male) | Pin (Male) | - |
| Contact Plating | Gold | Gold | - |
| Series | MTSW | MTSW | - |
| Tradename | Flex Stack | Flex Stack | - |
| Packaging | Bulk | Bulk | - |
| Contact Type | - | - | - |
| Housing Material | Polyester | Polyester | - |
| Brand | Samtec | Samtec | - |
| Contact Material | Phosphor Bronze | Phosphor Bronze | - |
| Flammability Rating | UL 94 V-0 | UL 94 V-0 | - |
| Row Spacing | 2.54 mm | - | - |
| Housing Gender | - | - | - |
| Latching Type | Unlatched | Unlatched | - |
| Maximum Operating Temperature | + 125 C | + 125 C | - |
| Minimum Operating Temperature | - 55 C | - 55 C | - |
| Product Type | Headers & Wire Housings | Headers & Wire Housings | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Headers & Wire Housings | Headers & Wire Housings | - |