| Compare | Image | Name | Manufacturer | Pricing(USD) | Quantity | Weight(Kg) | Size(LxWxH) | Part Status | Series | Mount | Mounting Type | Packaging | Moisture Sensitivity Level (MSL) | Termination | RoHS Status | Published | Datasheet | Color | Factory Lead Time | Pbfree Code | Connector Type | Number of Positions | Gender | MIL Conformance | DIN Conformance | IEC Conformance | Filter Feature | Mixed Contacts | Option | Number of Contacts | Mating Information | Contact Gender | ECCN Code | Additional Feature | Contact Material | Housing Material | Total Number of Contacts | Radiation Hardening | Body/Shell Style | HTS Code | Insulation Resistance | JESD-609 Code | Reference Standard | Operating Temperature (Min) | Subcategory | Pitch | Insulation Material | Body Breadth | Number of Rows | Row Spacing | Device Socket Type | Number of Conductors | Reliability | Number Of PCB Rows | PCB Contact Pattern | Contact Style | Contact Pattern | Rated Current (Signal) | Dielectric Withstanding Voltage | Plating Thickness | UL Flammability Code | Length - Tail | Contact Finish - Post (Mating) | Length - Stack Height | Length - Overall Pin | Length - Post (Mating) | Contact Finish Thickness - Post (Mating) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 342-90-117-00-592000 | Mill-Max Manufacturing Corp. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | 342 | Through Hole | Bulk | Not Applicable | Solder | Non-RoHS Compliant | Black | 3 Weeks | no | 17 | 17 | EAR99 | SOCKET HEADER | NOT SPECIFIED | POLYETHYLENE | 8536.90.40.00 | e0 | 0.100 2.54mm | 1 | IC SOCKET | 0.125 3.180mm | Tin-Lead | 0.335 8.500mm | 0.585 14.859mm | 0.125 3.180mm | 200.0μin 5.08μm | ||||||||||||||||||||||||||||||||||||
| HDWM-40-58-G-D-200 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, HDWM | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | https://pdf.utmel.com/r/datasheets/samtec-hdwm4058gd200-datasheets-5053.pdf | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 80 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | PHOSPHOR BRONZE | 80 | No | e4 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 0.120 3.048mm | Gold | 0.200 5.080mm | 0.705 17.907mm | 0.385 9.779mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||
| 342-40-117-00-592000 | Mill-Max Manufacturing Corp. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | 342 | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | 17 | 17 | EAR99 | SOCKET HEADER | NOT SPECIFIED | POLYETHYLENE | 8536.90.40.00 | e3 | 0.100 2.54mm | 1 | IC SOCKET | 0.125 3.180mm | Tin | 0.335 8.500mm | 0.585 14.859mm | 0.125 3.180mm | 200.0μin 5.08μm | ||||||||||||||||||||||||||||||||||||
| DWM-40-58-G-D-550 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DWM | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | https://pdf.utmel.com/r/datasheets/samtec-dwm4058gd550-datasheets-5054.pdf | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 80 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | PHOSPHOR BRONZE | 80 | No | e4 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 94V-0 | 0.120 3.048mm | Gold | 0.550 13.970mm | 0.705 17.907mm | 0.035 0.889mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||
| DWM-50-58-G-D-375 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DWM | Through Hole | Through Hole | Tube | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 100 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | PHOSPHOR BRONZE | 100 | No | e4 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 94V-0 | 0.120 3.048mm | Gold | 0.375 9.525mm | 0.705 17.907mm | 0.210 5.334mm | 10.0μin 0.25μm | |||||||||||||||||||||||||||||
| DWM-50-58-G-D-250 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DWM | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 100 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | EAR99 | PHOSPHOR BRONZE | 100 | No | RECEPTACLE | 8536.69.40.40 | e4 | UL, CSA | -55°C | Headers and Edge Type Connectors | 0.050 1.27mm | NYLON | 0.196 inch | 2 | 0.100 (2.54mm) | ONE | COMMERCIAL | 2 | RECTANGULAR | SQ PIN-SKT | RECTANGULAR | 10μin | 0.120 3.048mm | Gold | 0.250 6.350mm | 0.705 17.907mm | 0.335 8.509mm | 10.0μin 0.25μm | ||||||||||||||
| FW-49-05-L-D-500-065 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 98 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | LOW PROFILE | PHOSPHOR BRONZE | 98 | No | e3 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | Gold | 0.500 12.700mm | 0.565 14.351mm | 0.065 1.651mm | 10.0μin 0.25μm | |||||||||||||||||||||||||||||||
| FW-49-05-L-D-470-100 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | Black | 3 Weeks | BOARD STACKING CONNECTOR | 98 | NO | NO | NO | NO | NO | GENERAL PURPOSE | MALE | 98 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | 94V-0 | Gold | 0.470 11.938mm | 0.570 14.478mm | 0.100 2.540mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||||||||||
| FW-49-05-L-D-500-090 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | https://pdf.utmel.com/r/datasheets/samtec-fw4905ld500090-datasheets-5046.pdf | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 98 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | LOW PROFILE | PHOSPHOR BRONZE | 98 | No | e3 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | Gold | 0.500 12.700mm | 0.590 14.986mm | 0.090 2.286mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||||
| FW-49-05-L-D-490-100 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | Black | 3 Weeks | BOARD STACKING CONNECTOR | 98 | NO | NO | NO | NO | NO | GENERAL PURPOSE | MALE | 98 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | 94V-0 | Gold | 0.490 12.446mm | 0.590 14.986mm | 0.100 2.540mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||||||||||
| HDWM-40-58-G-D-412 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, HDWM | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | BOARD STACKING CONNECTOR | 80 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 0.120 3.048mm | Gold | 0.412 10.465mm | 0.705 17.907mm | 0.173 4.394mm | 10.0μin 0.25μm | |||||||||||||||||||||||||||||||||||||||||||
| DW-42-11-S-D-450 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DW | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 84 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | EAR99 | PHOSPHOR BRONZE | 84 | No | 8536.69.40.40 | e3 | 0.100 2.54mm | 2 | 0.100 (2.54mm) | 0.110 2.794mm | Gold | 0.450 11.430mm | 0.930 23.622mm | 0.370 9.400mm | 30.0μin 0.76μm | |||||||||||||||||||||||||||
| HW-30-14-S-Q-200-055 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, HW | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 60 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | EAR99 | PHOSPHOR BRONZE | 60 | 8536.69.40.40 | e3 | 0.100 2.54mm | 2 | 0.200 (5.08mm) | 0.055 1.400mm | Gold | 0.200 5.080mm | 1.430 36.322mm | 1.175 29.845mm | 30.0μin 0.76μm | ||||||||||||||||||||||||||||
| DWM-40-58-G-D-230 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DWM | Through Hole | Through Hole | Tube | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 80 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | PHOSPHOR BRONZE | 80 | No | e4 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 0.120 3.048mm | Gold | 0.230 5.842mm | 0.705 17.907mm | 0.355 9.017mm | 10.0μin 0.25μm | |||||||||||||||||||||||||||||
| HDWM-36-54-S-D-315-SM | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, HDWM | Surface Mount | Bulk | Solder | ROHS3 Compliant | https://pdf.utmel.com/r/datasheets/samtec-hdwm3654sd315sm-datasheets-5051.pdf | Black | 3 Weeks | BOARD STACKING CONNECTOR | 72 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | 72 | e3 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 94V-0 | Gold | 0.315 8.000mm | 0.600 15.240mm | 0.285 7.239mm | 30.0μin 0.76μm | ||||||||||||||||||||||||||||||||||
| HDWM-36-54-S-D-250-SM | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, HDWM | Surface Mount | Bulk | Solder | ROHS3 Compliant | https://pdf.utmel.com/r/datasheets/samtec-hdwm3654sd250sm-datasheets-5038.pdf | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 72 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | PHOSPHOR BRONZE | 72 | e3 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | Gold | 0.250 6.350mm | 0.535 13.589mm | 0.285 7.239mm | 30.0μin 0.76μm | ||||||||||||||||||||||||||||||||
| DWM-40-58-G-D-200 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DWM | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 80 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | EAR99 | PHOSPHOR BRONZE | 80 | No | 8536.69.40.40 | e4 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 0.120 3.048mm | Gold | 0.200 5.080mm | 0.705 17.907mm | 0.385 9.779mm | 10.0μin 0.25μm | |||||||||||||||||||||||||||
| DWM-50-58-G-D-200 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DWM | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | 2011 | https://pdf.utmel.com/r/datasheets/samtec-dwm5058gd200-datasheets-5040.pdf | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 100 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | PHOSPHOR BRONZE | 100 | No | e4 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 0.120 3.048mm | Gold | 0.200 5.080mm | 0.705 17.907mm | 0.385 9.779mm | 10.0μin 0.25μm | |||||||||||||||||||||||||||
| FW-49-05-L-D-550-100 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | Black | 3 Weeks | BOARD STACKING CONNECTOR | 98 | NO | NO | NO | NO | NO | GENERAL PURPOSE | MALE | 98 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | 94V-0 | Gold | 0.550 13.970mm | 0.650 16.510mm | 0.100 2.540mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||||||||||
| HDWM-40-58-G-D-250 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, HDWM | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | 2011 | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 80 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | EAR99 | HIGH TEMPERATURE | PHOSPHOR BRONZE | 80 | No | RECEPTACLE | 8536.69.40.40 | 5000000000Ohm | e4 | UL | -65°C | Headers and Edge Type Connectors | 0.050 1.27mm | NYLON | 0.196 inch | 2 | 0.100 (2.54mm) | ONE | COMMERCIAL | 2 | RECTANGULAR | SQ PIN-SKT | RECTANGULAR | 1A | 600VAC V | 10μin | 0.120 3.048mm | Gold | 0.250 6.350mm | 0.705 17.907mm | 0.335 8.509mm | 10.0μin 0.25μm | |||||||||
| DW-40-13-G-Q-450 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DW | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | 2016 | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 80 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | PHOSPHOR BRONZE | 80 | No | e4 | 0.100 2.54mm | 3 | 0.100 (2.54mm) | 0.110 2.794mm | Gold | 0.450 11.430mm | 1.230 31.242mm | 0.670 17.018mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||
| DW-42-11-S-D-400 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DW | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | 2016 | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 84 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | EAR99 | PHOSPHOR BRONZE | 84 | No | 8536.69.40.40 | e3 | 0.100 2.54mm | 2 | 0.100 (2.54mm) | 0.110 2.794mm | Gold | 0.400 10.160mm | 0.930 23.622mm | 0.420 10.668mm | 30.0μin 0.76μm | ||||||||||||||||||||||||||
| DW-32-20-S-Q-450 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DW | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | 2016 | https://pdf.utmel.com/r/datasheets/samtec-dw3220sq450-datasheets-5028.pdf | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 64 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | EAR99 | PHOSPHOR BRONZE | 64 | e3 | 0.100 2.54mm | 3 | 0.100 (2.54mm) | 0.110 2.794mm | Gold | 0.450 11.430mm | 1.130 28.702mm | 0.570 14.478mm | 30.0μin 0.76μm | |||||||||||||||||||||||||||
| FW-49-05-L-D-560-100 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | Black | 3 Weeks | BOARD STACKING CONNECTOR | 98 | NO | NO | NO | NO | NO | GENERAL PURPOSE | MALE | 98 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | 94V-0 | Gold | 0.560 14.224mm | 0.660 16.764mm | 0.100 2.540mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||||||||||
| FW-49-05-L-D-515-100 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | Black | 3 Weeks | BOARD STACKING CONNECTOR | 98 | NO | NO | NO | NO | NO | GENERAL PURPOSE | MALE | 98 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | 94V-0 | Gold | 0.515 13.081mm | 0.615 15.621mm | 0.100 2.540mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||||||||||
| DWM-40-58-G-D-460 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DWM | Through Hole | Through Hole | Tube | Not Applicable | Solder | ROHS3 Compliant | https://pdf.utmel.com/r/datasheets/samtec-dwm4058gd460-datasheets-5029.pdf | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 80 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | PHOSPHOR BRONZE | 80 | No | e4 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 0.120 3.048mm | Gold | 0.460 11.684mm | 0.705 17.907mm | 0.125 3.175mm | 10.0μin 0.25μm | |||||||||||||||||||||||||||||
| FW-49-05-L-D-460-100 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | Black | 3 Weeks | BOARD STACKING CONNECTOR | 98 | NO | NO | NO | NO | NO | GENERAL PURPOSE | MALE | 98 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | 94V-0 | Gold | 0.460 11.684mm | 0.560 14.224mm | 0.100 2.540mm | 10.0μin 0.25μm | ||||||||||||||||||||||||||||||||||||
| DW-32-20-S-Q-400 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DW | Through Hole | Through Hole | Bulk | Not Applicable | Solder | ROHS3 Compliant | https://pdf.utmel.com/r/datasheets/samtec-dw3220sq400-datasheets-5032.pdf | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 64 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | EAR99 | PHOSPHOR BRONZE | 64 | e3 | 0.100 2.54mm | 3 | 0.100 (2.54mm) | 0.110 2.794mm | Gold | 0.400 10.160mm | 1.130 28.702mm | 0.620 15.748mm | 30.0μin 0.76μm | ||||||||||||||||||||||||||||
| DWM-50-58-G-D-365 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, DWM | Through Hole | Through Hole | Tube | Not Applicable | Solder | ROHS3 Compliant | Black | 3 Weeks | yes | BOARD STACKING CONNECTOR | 100 | Male | NO | NO | NO | NO | NO | GENERAL PURPOSE | PHOSPHOR BRONZE | 100 | No | e4 | 0.050 1.27mm | 2 | 0.100 (2.54mm) | 94V-0 | 0.120 3.048mm | Gold | 0.365 9.271mm | 0.705 17.907mm | 0.220 5.588mm | 10.0μin 0.25μm | |||||||||||||||||||||||||||||
| FW-49-05-L-D-525-100 | Samtec Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Flex Stack, FW | Surface Mount | Bulk | Solder | ROHS3 Compliant | Black | 3 Weeks | BOARD STACKING CONNECTOR | 98 | NO | NO | NO | NO | NO | GENERAL PURPOSE | MALE | 98 | 0.050 1.27mm | 2 | 0.050 (1.27mm) | 94V-0 | Gold | 0.525 13.335mm | 0.625 15.875mm | 0.100 2.540mm | 10.0μin 0.25μm |
Please send RFQ , we will respond immediately.