Compare | Image | Name | Manufacturer | Pricing(USD) | Quantity | Weight(Kg) | Size(LxWxH) | Part Status | Series | Mount | Mounting Type | Operating Temperature | Packaging | Moisture Sensitivity Level (MSL) | Termination | Max Operating Temperature | Min Operating Temperature | Voltage - Rated | RoHS Status | Published | Datasheet | Voltage - Rated DC | Current Rating | Length | Height | Width | Voltage - Rated AC | Operating Supply Voltage | Color | Lead Free | Depth | Number of Terminations | Factory Lead Time | Approval Agency | REACH SVHC | Number of Pins | Lifecycle Status | 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 | Empty Shell | ELV | Sealable | Housing Color | Contact Finish - Mating | Orientation | Number of Ports | Flammability Rating | ECCN Code | Contact Material | Contact Plating | Housing Material | Total Number of Contacts | Radiation Hardening | Reach Compliance Code | Max Voltage Rating (DC) | HTS Code | Wire/Cable Gauge | Max Current Rating | Feature | Reference Standard | Subcategory | Pitch | Max Voltage Rating (AC) | Contact Current Rating | Connector Support Type | Assembly Item Name | Body Length or Diameter | Body Breadth | Number of Rows | Wire Gauge (Max) | Wire Gauge (Min) | Row Spacing | Wire/Cable Type | Number of Conductors | Current Rating (Amps) | Insulation Diameter | Rated Voltage(DC) | Rated Voltage(AC) | Reliability | Plating Thickness | Circuit Application | UL Flammability Code | Fastening Type | Contact Retention | Number of Power Positions | Contact Type | PCB Mount Retention | Glow Wire Compliant | Material - Insulation | Contact Termination | Note | Stacking Direction |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1604062-4 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 180 | Free Hanging | Free Hanging (In-Line) | -20°C~105°C | Bulk | 1 (Unlimited) | RoHS Compliant | 2008 | /files/teconnectivityampconnectors-16040622-datasheets-6479.pdf | 180A | 82.6mm | 28.2448mm | 26.924mm | 600V | Red | Not Applicable | 82.6mm | 15 Weeks | UL | ACTIVE (Last Updated: 1 week ago) | yes | Non-Gendered | 1 | NO | NO | NO | NO | NO | GENERAL PURPOSE | NO | Compliant | No | Straight | UL94 V-0 | Copper | Silver | Polycarbonate | 1 | 180A | Stackable | 600V | Discrete | 18 mm | Power | Spring Retention | Without | Polycarbonate (PC) | Crimp | Contacts Not Included | |||||||||||||||||||||||||||||||||||||||||||||||||
1510340016 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | EXTreme Guardian 151034 | Free Hanging (In-Line) | -40°C~105°C | Tray | 1 (Unlimited) | ROHS3 Compliant | 2016 | /files/molex-1510340016-datasheets-7568.pdf | Black | 10 Weeks | yes | Receptacle | 6 | NO | NO | GENERAL PURPOSE | MULTIPLE MATING PARTS AVAILABLE | NO | NOT SPECIFIED | EAR99 | NOT SPECIFIED | 6 | UL | 0.433 11.00mm | 2.772 inch | 0.858 inch | 1 | 80A | 94V-0 | Latch Lock | Female Blade Socket | Polybutylene Terephthalate (PBT) | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0945504104 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | 94550 | Free Hanging | Free Hanging (In-Line) | -40°C~85°C | Bulk | 1 (Unlimited) | Crimp | 85°C | -40°C | ROHS3 Compliant | /files/molex-0945504104-datasheets-7634.pdf | 20mm | Natural | 27.15mm | 16 Weeks | Receptacle | 4 | Natural | Straight | Nylon | 0.197 5.00mm | 1 | Latch Lock | Female Blade Socket | Polyamide (PA66), Nylon 6/6 | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1827685-2 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Panel Mount | Tray | 1 (Unlimited) | RoHS Compliant | 2009 | /files/teconnectivityamp-18276852-datasheets-4282.pdf | Black | ACTIVE (Last Updated: 5 months ago) | Receptacle | 7 | 7 | Compliant | No | Black | UL94 V-0 | Gold | Thermoplastic | 6A | Stackable | 0.079 2.00mm | 1 | Non-Gendered | Without | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
6810G3 | Anderson Power Products, Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | SB® 120 | Free Hanging (In-Line) | -20°C~105°C | Bulk | 1 (Unlimited) | 600V | ROHS3 Compliant | 2002 | /files/andersonpowerproductsinc-6810g2bk-datasheets-6526.pdf | 190A | Red | 2 Weeks | No SVHC | Non-Gendered | 2 | Male | NOT SPECIFIED | EAR99 | NOT SPECIFIED | 8536.69.40.30 | 1 | 120A | Spring Retention | Polycarbonate (PC) | Crimp | Contacts Not Included | Side to Side | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0436803005 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Sabre 43680 | Free Hanging (In-Line) | -45°C~75°C | Bulk | 1 (Unlimited) | 600V | ROHS3 Compliant | /files/molex-0431600104-datasheets-1312.pdf | Black | 8 Weeks | yes | Plug | 5 | NOT SPECIFIED | EAR99 | NOT SPECIFIED | 0.295 7.50mm | 1 | 12A | Locking Ramp | Male Blade | Polyamide (PA), Nylon | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1445994-2 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 120 | Panel, Through Hole | Panel Mount | -20°C~105°C | Bulk | 1 (Unlimited) | Crimp, Solder | 105°C | -20°C | 600V | RoHS Compliant | 2006 | /files/teconnectivityampconnectors-14459941-datasheets-5968.pdf | 48V | 120A | 63.45mm | 20.6mm | 44.2976mm | 600V | Blue | Not Applicable | 44.31mm | 2 | 16 Weeks | UL | 2 | ACTIVE (Last Updated: 1 day ago) | Non-Gendered | 2 | 2 | Male | Compliant | No | Blue | Straight | 1 | UL94 V-0 | Copper | Silver | Polycarbonate | No | 2 AWG | 1 | 6 AWG | 2 AWG | Discrete | Power | Spring Retention | Without | Non-Gendered | Polycarbonate (PC) | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||
0355250200 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | 35525 | Free Hanging (In-Line) | -40°C~120°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | /files/molex-0355250200-datasheets-7585.pdf | Natural | Receptacle | 2 | 0.244 6.20mm | 1 | Latch Lock | Male Blade | Polybutylene Terephthalate (PBT) | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1744188-1 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 15/30/45 | Free Hanging (In-Line) | Bulk | 1 (Unlimited) | RoHS Compliant | 2009 | /files/teconnectivityampconnectors-17441883-datasheets-7506.pdf | 13 Weeks | Non-Gendered | 3 | Stackable | 1 | Non-Gendered | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1744188-2 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 15/30/45 | Free Hanging | Free Hanging (In-Line) | Bulk | 1 (Unlimited) | RoHS Compliant | 2009 | /files/teconnectivityampconnectors-17441883-datasheets-7506.pdf | Black, Red, Yellow | 13 Weeks | Non-Gendered | 3 | 1 | Spring Retention | Non-Gendered | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2173200-2 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Free Hanging (In-Line) | -40°C~125°C | Bulk | RoHS Compliant | 2016 | 20A | 60V | Black | ACTIVE (Last Updated: 1 week ago) | Receptacle | No | Vertical | UL94 V-0 | Silver | PBT | Panel Lock | 0.307 7.80mm | 20A | 2 | 0.246 (6.25mm) | 3μm | Power | Latch Lock | With | 4 | Female Blade Socket | Polybutylene Terephthalate (PBT), Glass Filled | Crimp | Contacts Not Included | Top to Bottom and Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0436803006 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Sabre 43680 | Free Hanging (In-Line) | -45°C~75°C | Bulk | 1 (Unlimited) | 600V | ROHS3 Compliant | /files/molex-0436803003-datasheets-7484.pdf | Black | 8 Weeks | yes | Plug | 6 | NOT SPECIFIED | EAR99 | NOT SPECIFIED | 0.295 7.50mm | 1 | 12A | Locking Ramp | Male Blade | Polyamide (PA), Nylon | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0444413004 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Sabre 44441 | Free Hanging (In-Line) | -40°C~75°C | Bulk | 1 (Unlimited) | 600V | ROHS3 Compliant | /files/molex-0431600104-datasheets-1313.pdf | Black | 8 Weeks | yes | Receptacle | 4 | NOT SPECIFIED | EAR99 | NOT SPECIFIED | 0.295 7.50mm | 1 | 10A | Latch Lock | Female Blade Socket | Polyamide (PA), Nylon | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0444413005 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Sabre 44441 | Free Hanging (In-Line) | -40°C~75°C | Bulk | 1 (Unlimited) | 600V | ROHS3 Compliant | /files/molex-0431600104-datasheets-1313.pdf | Black | 8 Weeks | yes | Receptacle | 5 | NOT SPECIFIED | NOT SPECIFIED | 0.295 7.50mm | 1 | 10A | Latch Lock | Female Blade Socket | Polyamide (PA), Nylon | Crimp | Contacts Not Included | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1726733004 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Super Sabre 172673 | Free Hanging (In-Line) | -40°C~125°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | 2014 | /files/molex-1720420307-datasheets-9326.pdf | Black | 6 Weeks | yes | Plug | 4 | NOT SPECIFIED | EAR99 | NOT SPECIFIED | 0.295 7.50mm | 1 | 34A | Locking Ramp | Male Blade | Polyamide (PA), Nylon | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0436803003 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Sabre 43680 | Free Hanging (In-Line) | -45°C~75°C | Bulk | 1 (Unlimited) | 600V | ROHS3 Compliant | /files/molex-0436803003-datasheets-7484.pdf | Black | 7 Weeks | yes | Plug | 3 | NOT SPECIFIED | EAR99 | NOT SPECIFIED | 0.295 7.50mm | 1 | 12A | Locking Ramp | Male Blade | Polyamide (PA), Nylon | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1726723006 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Super Sabre 172672 | Free Hanging | Free Hanging (In-Line) | -40°C~125°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | 2014 | /files/molex-1720420307-datasheets-9326.pdf | 34A | Black | 6 Weeks | No SVHC | yes | Receptacle | 6 | NOT SPECIFIED | NOT SPECIFIED | 0.295 7.50mm | 1 | Latch Lock | Female Blade Socket | Compliant | Polyamide (PA), Nylon | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
P5916-BK | Anderson Power Products, Inc. |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Powerpole® | Free Hanging (In-Line) | -20°C~105°C | Bulk | 1 (Unlimited) | 600V | ROHS3 Compliant | /files/andersonpowerproductsinc-75lokblkbk-datasheets-6461.pdf | Blue | 3 Weeks | CSA; CUL; UL | Non-Gendered | 1 | NO | NO | NO | Stackable | CONNECTOR ACCESSORY | HOUSING | 120A | 600V | 600V | Spring Retention | Polycarbonate (PC) | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1726733005 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Super Sabre 172673 | Free Hanging | Free Hanging (In-Line) | -40°C~125°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | 2014 | https://pdf.utmel.com/r/datasheets/molex-1720420307-datasheets-9326.pdf | 34A | Black | 6 Weeks | No SVHC | yes | Plug | 5 | NOT SPECIFIED | EAR99 | NOT SPECIFIED | unknown | 0.295 7.50mm | 1 | Locking Ramp | Male Blade | Compliant | Polyamide (PA), Nylon | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0351510619 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | VersaBlade 35151 | Free Hanging (In-Line) | -40°C~120°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | Natural | 10 Weeks | Receptacle | 6 | NOT SPECIFIED | NOT SPECIFIED | 0.287 7.30mm | 2 | 0.307 (7.80mm) | Latch Lock | Female Blade Socket, Male Blade | Polycarbonate (PC), Polyethylene Terephthalate (PET) | Crimp | Contacts Not Included | Top to Bottom and Side to Side | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0431805003 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | 43180 | Free Hanging (In-Line) | -40°C~75°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | /files/molex-0431805003-datasheets-7560.pdf | Black | 8 Weeks | yes | Plug | 3 | NOT SPECIFIED | NOT SPECIFIED | 0.295 7.50mm | 1 | Locking Ramp | Male Blade | Polyamide (PA6), Nylon 6 | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0945294110 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | 94529 | Free Hanging | Free Hanging (In-Line) | -40°C~105°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | https://pdf.utmel.com/r/datasheets/molex-0945294110-datasheets-7500.pdf | 6A | Natural | 17 Weeks | yes | Receptacle | 10 | NOT SPECIFIED | Straight | NOT SPECIFIED | Nylon | unknown | 0.197 5.00mm | 1 | Female Blade Socket | Polyamide (PA66), Nylon 6/6 | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0351800609 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | 35180 | Panel Mount | -40°C~120°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | Yellow | 10 Weeks | Plug | 6 | 0.335 8.50mm | 2 | 0.315 (8.00mm) | Locking Ramp | Female Blade Socket, Male Blade | Polycarbonate (PC), Polyethylene Terephthalate (PET) | Crimp | Contacts Not Included | Top to Bottom and Side to Side | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
647845-3 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 50 | Cable, Free Hanging | Free Hanging (In-Line) | Bulk | 1 (Unlimited) | Crimp | 105°C | -20°C | 600V | RoHS Compliant | 2003 | 24V | 50A | 48.23mm | 15.88mm | 35.05mm | 600V | Red | Lead Free | 1 | 12 Weeks | UL | Unknown | ACTIVE (Last Updated: 1 day ago) | Non-Gendered | 2 | Hermaphroditic | 2 | Compliant | No | Red | Straight | 1 | UL94 V-0 | Copper | Silver | Polycarbonate | No | 600V | 600V | 1 | Discrete | 10 mm | Power | Spring Retention | Without | Non-Gendered | Polycarbonate (PC) | Crimp | Contacts Not Included | Side to Side | |||||||||||||||||||||||||||||||||||||||||||||||
1744188-3 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 15/30/45 | Free Hanging (In-Line) | Bulk | 1 (Unlimited) | RoHS Compliant | 2009 | /files/teconnectivityampconnectors-17441883-datasheets-7506.pdf | 9 Weeks | Non-Gendered | 3 | Panel Lock | 1 | Non-Gendered | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1604001-4 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 120 | Free Hanging | Free Hanging (In-Line) | -20°C~105°C | Bulk | 1 (Unlimited) | Crimp | 105°C | -20°C | 72V | RoHS Compliant | 2006 | /files/teconnectivityampconnectors-16040012-datasheets-6046.pdf | 72V | 120A | 22.4mm | 69.596mm | 22.4mm | 600V | Green | Not Applicable | 69.6mm | 11 Weeks | UL | ACTIVE (Last Updated: 3 days ago) | Non-Gendered | 1 | 1 | Compliant | No | Green | Straight | UL94 V-0 | Copper | Silver | Polycarbonate | 600.6kV | 2 AWG | Stackable | 600V | 1 | 6 AWG | 2 AWG | Discrete | 15 mm | Power | Spring Retention | Without | Non-Gendered | Polycarbonate (PC) | Crimp | Contacts Not Included | ||||||||||||||||||||||||||||||||||||||||||||||
1604342-2 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 50 | Free Hanging | Free Hanging (In-Line) | Bulk | 1 (Unlimited) | Crimp | 600V | RoHS Compliant | 2008 | /files/teconnectivityampconnectors-16043421-datasheets-6541.pdf | 600V | 50A | 55.98mm | 17.19mm | 35.05mm | 600V | 600V | White | Lead Free | 55.98mm | 15 Weeks | UL | No SVHC | ACTIVE (Last Updated: 4 days ago) | Non-Gendered | 2 | Male, Female | 8 | Compliant | No | White | Straight | UL94 V-0 | Polycarbonate | 600.6kV | 12 AWG | 600V | 1 | Discrete | 10 mm | Power | Spring Retention | Without | Non-Gendered | Polycarbonate (PC) | Crimp | Contacts Not Included | Side to Side | ||||||||||||||||||||||||||||||||||||||||||||||||||
0437965024 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | 43796 | Free Hanging | Free Hanging (In-Line) | -40°C~75°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | /files/molex-0437965024-datasheets-7513.pdf | 1.5A | 48.51mm | Black | 21.59mm | yes | Receptacle | 24 | YES | Natural | NOT SPECIFIED | Straight | EAR99 | NOT SPECIFIED | Nylon | 24 | UL, CSA | Headers and Edge Type Connectors | 0.220 5.59mm | 3 | ONE | COMMERCIAL | Latch Lock | Female Blade Socket | Polyamide (PA66), Nylon 6/6 | Crimp | Contacts Not Included | Top to Bottom and Side to Side | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1445957-4 | TE Connectivity AMP Connectors |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Power Series 15/30/45 | Free Hanging | Free Hanging (In-Line) | Bulk | 1 (Unlimited) | Crimp | 105°C | -20°C | 600V | RoHS Compliant | 2008 | /files/teconnectivityampconnectors-14459571-datasheets-5770.pdf | 24.6mm | 7.3914mm | 7.4mm | 600V | Green | Lead Free | 24.6mm | 9 Weeks | UL | No SVHC | ACTIVE (Last Updated: 2 days ago) | Non-Gendered | 1 | Receptacle | 1 | Male | Compliant | No | Green | Straight | 1 | UL94 V-0 | Tin | Polycarbonate | No | 600.6kV | 20 AWG | 40A | Stackable | 600V | 1 | 10 AWG | 20 AWG | Discrete | Power | Spring Retention | Without | Non-Gendered | Polycarbonate (PC) | Crimp | Contacts Not Included | |||||||||||||||||||||||||||||||||||||||||||||
1726733002 | Molex |
Min: 1 Mult: 1 |
0 | 0x0x0 | download | Super Sabre 172673 | Free Hanging (In-Line) | -40°C~125°C | Bulk | 1 (Unlimited) | ROHS3 Compliant | 2014 | /files/molex-1720420307-datasheets-9326.pdf | Black | 8 Weeks | yes | Plug | 2 | NOT SPECIFIED | NOT SPECIFIED | 0.295 7.50mm | 1 | 34A | Locking Ramp | Male Blade | Polyamide (PA), Nylon | Crimp | Contacts Not Included |
Please send RFQ , we will respond immediately.