Part Number	Web Description	Sample Eligible	Circuits (Loaded)	Circuits (maximum)	Color - Resin	Durability (mating cycles max)	First Mate / Last Break	Flammability	Guide to Mating Part	Keying to Mating Part	Material - Metal	Material - Plating Mating	Material - Plating Termination	Material - Resin	Net Weight	Number of Columns	Number of Pairs	Number of Rows	Orientation	Packaging Type	PC Tail Length	PCB Locator	PCB Retention	PCB Thickness - Recommended	Pitch - Mating Interface	Pitch - Termination Interface	Plating min - Mating	Temperature Range - Operating
1717451107	Impel 90 Ohm, 2 Pair Vertical Backplane Header, 1.90mm Pitch, Unguided, Open Endwalls, 10 Columns, 40 Circuits, Pin Length 4.90mm, Plated Through Hole Dimension 0.36mm	Check Availability	40	40	Black	200	No	94V-0	No	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	3.231/g	10	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C
1717451207	Impel 90 Ohm, 2 Pair Vertical Backplane Header, 1.90mm Pitch, Unguided, Open Endwalls, 12 Columns, 48 Circuits, Pin Length 4.90mm, Plated Through Hole Dimension 0.36mm	No	48	48	Black	200	No	94V-0	No	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	4.107/g	12	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C
1717451208	Impel 90 Ohm, 2 Pair Vertical Backplane Header, 1.90mm Pitch, Unguided, Open Endwalls, 12 Columns, 48 Circuits, Pin Length 5.50mm, Plated Through Hole Dimension 0.36mm	No	48	48	Black	200	No		No	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	4.011/g	12	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C
1717451807	Impel 90 Ohm, 2 Pair Vertical Backplane Header, 1.90mm Pitch, Unguided, Open Endwalls, 8 Columns, 32 Circuits, Pin Length 4.90mm, Plated Through Hole Dimension 0.36mm	No	32	32	Black	200	No		No	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	2.665/g	8	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C
1717451837	Impel 90 Ohm, 2 Pair Vertical Backplane Header, 1.90mm Pitch, Unguided, Right Endwall, 8 Columns, 32 Circuits, Pin Length 4.90mm, Plated Through Hole Dimension 0.36mm	No	32	32	Black	200	No	94V-0	No	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	2.953/g	8	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C
1717453807	Impel 90 Ohm, 2 Pair Vertical Backplane Header, 1.90mm Pitch, Left Guided, 8 Columns, 32 Circuits, Pin Length 4.90mm, Plated Through Hole Dimension 0.36mm	No	32	32	Black	200	No	94V-0	No	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	3.413/g	8	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C
1717455107	Impel 90 Ohm 2 Pair Vertical Backplane Header, 1.90mm Pitch, Right Guided, 10 Columns, 40 Circuits, Pin Length 4.90mm, Plated Through Hole Dimension 0.36mm	No	40	40	Black	200	No		Yes	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	4.346/g	10	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C
1717455108	Impel 90 Ohm 2 Pair Vertical Backplane Header, 1.90mm Pitch, Right Guided, 10 Columns, 40 Circuits, Pin Length 5.50mm, Plated Through Hole Dimension 0.36mm	No	40	40	Black	200	No		Yes	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	6.375/g	10	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C
1717455208	Impel 90 Ohm 2 Pair Vertical Backplane Header, 1.90mm Pitch, Right Guided, 12 Columns, 48 Circuits, Pin Length 5.50mm, Plated Through Hole Dimension 0.36mm	No	48	48	Black	200	No		Yes	No	High Performance Alloy (HPA)	Gold	Tin	High Temperature Thermoplastic	6.643/g	12	2	4	Vertical	Tray	1.30mm	No	No	1.00mm	1.90mm	1.90mm	0.762µm	-55° to +85°C