Call us: +86 0755-82563503

Currency: $ US Dollar

Items : %s%s

Potentiometers

Potentiometers are electronic components that are used to control the flow of electric current in a circuit. They are variable resistors that allow the user to adjust the resistance of the circuit by turning a knob or sliding a lever. Potentiometers are commonly used in audio equipment, such as volume controls and tone controls, as well as in industrial and scientific applications where precise control of electrical signals is required. They come in a variety of sizes and shapes, and can be mounted on circuit boards or used as standalone components. Potentiometers are an essential part of many electronic devices and are widely used in the electronics industry.

Compare Image Name Manufacturer Pricing(USD) Quantity Weight(Kg) Size(LxWxH) Datasheet Factory Lead Time Mount Packaging Published Series Pbfree Code Part Status Moisture Sensitivity Level (MSL) Number of Terminations Termination ECCN Code Max Operating Temperature Min Operating Temperature Color Depth Diameter Length RoHS Status Lead Free Contact Plating Voltage - Rated Radiation Hardening REACH SVHC Reach Compliance Code Height Width Resistance Mounting Type Weight Size / Dimension Voltage - Rated DC Technology Voltage - Rated AC HTS Code Packing Method Power Rating Type Lead Length JESD-609 Code Terminal Finish Base Part Number Subcategory Max Power Dissipation Terminal Shape Termination Style Composition Hole Diameter Tolerance Construction Temperature Coefficient Resistor Type Rated Power Dissipation (P) Working Voltage Size Code Rated Temperature Military Standard Number of Gangs Lead Diameter Actuator Type Number of Turns Actuator Orientation Ganging Number Power (Watts) Linearity Built in Switch Resistive Material Taper Rotation Angle Actuator Length Bushing Thread Actuator Diameter Adjustment Type Rotation Size - Body
3299P-1-104LF 3299P-1-104LF Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 7 Weeks PCB, Panel, Through Hole Tube 2007 Trimpot® 3299 - Sealed yes Active 1 (Unlimited) 3 Pin 125°C -55°C Blue 11.55mm ROHS3 Compliant Lead Free Tin 300V No No SVHC 6.096mm 100kOhm Through Hole 992.233309mg Rectangular - 0.240 x 0.375 Face x 0.240 H 6.10mmx9.53mmx6.10mm 500V 500mW 6.22mm e3 3299P Variable Resistors 500mW WIRE PC Pins ±10% Trimmer Pot ±100ppm/°C TRIMMER 0.5W 3824 70°C Not 0.51 mm SCREW 25 HORIZONTAL 0.5W 1/2W Cermet Linear 9000 deg Side Adjustment
97A2A-B28-A13/R51L 97A2A-B28-A13/R51L Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 8 Weeks Panel Tray 2013 97 yes Active 1 (Unlimited) PCB ROHS3 Compliant not_compliant 5kOhm Panel Mount 97A2A 2W PC Pins ±10% ±150ppm/°C Slotted 1 Rotary, DPST Cermet Linear 0.875 22.23mm 3/8-32 0.250 (6.35mm) Side Adjustment 300° Rectangular - 0.687 x 0.625 Face x 0.687 H 17.45mmx15.88mmx17.45mm
TU909YQ TU909YQ Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Obsolete 1 (Unlimited)
3352H-1-204LF 3352H-1-204LF Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks Through Hole Bulk 2005 Trimpot® 3352 - Open Frame yes Active 1 (Unlimited) 3 PC Pins EAR99 125°C -55°C Black 8.89mm ROHS3 Compliant Lead Free Tin 250V 3.81mm 200kOhm Through Hole 283.495231mg Round - 0.350Dia x 0.350 H 8.89mmx8.89mm 8533.40.80.50 500mW 4.75mm e3 3352H Variable Resistors 500mW WIRE Cermet ±20% Trimmer Pot 100 ppm/°C TRIMMER 0.5W 85°C SCREW 1 HORIZONTAL 0.5W 1/2W Linear 250 deg Side Adjustment
3009Y-1-503 3009Y-1-503 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 7 Weeks Panel, Through Hole Tube 2007 Trimpot® 3009 - Sealed no Active 1 (Unlimited) 3 Pin EAR99 150°C -55°C Blue Non-RoHS Compliant Contains Lead Lead, Tin not_compliant 50kOhm Through Hole 1.417476g Rectangular- 0.354 x 0.190 Facex0.750L 8.98mmx4.83mmx19.05mm 8533.40.80.50 750mW 5.33mm e0 Tin/Lead (Sn/Pb) 3009Y 750mW WIRE PC Pins ±10% ±100ppm/°C TRIMMER 0.75W 400V 70°C 0.51 mm SCREW 15 HORIZONTAL 1 0.75W 3/4W Cermet Linear 5400 deg Side Adjustment
3214J-1-203G 3214J-1-203G Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 7 Weeks Surface Mount Tape & Reel (TR) Trimpot® 3214 - Sealed yes Active 1 (Unlimited) 3 ROHS3 Compliant 3.7084mm 20kOhm Surface Mount Rectangular - 0.189 x 0.138 Face x 0.146 H 4.80mmx3.50mmx3.71mm TR, EMBOSSED, 13 INCH e3 Matte Tin (Sn) 3214J Variable Resistors 250mW J BEND J Lead ±10% Trimmer Pot ±100ppm/°C TRIMMER 1918 SCREW 5 HORIZONTAL 0.25W 1/4W Cermet 1800 deg Side Adjustment
3364X-1-503E 3364X-1-503E Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 14 Weeks Surface Mount Tape & Reel (TR) 2007 Trimpot® 3364 - Open Frame yes Obsolete 1 (Unlimited) 3 SMD/SMT EAR99 100°C -40°C Silver 4.5mm ROHS3 Compliant Contains Lead No No SVHC 1.4986mm 50kOhm Surface Mount 564mg Rectangular - 0.177 x 0.150 Face x 0.059 H 4.50mmx3.80mmx1.50mm 8533.40.80.50 TR, EMBOSSED, 7 INCH 200mW e3 Matte Tin (Sn) 3364X 200mW WRAPAROUND J Lead Cermet, Potentiometer ±25% ±250ppm/°C TRIMMER 0.2W 70°C Not SCREW 1 VERTICAL 0.2W 1/5W Cermet Linear 260 deg Top Adjustment
PDB181-K420K-203B PDB181-K420K-203B Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 16 Weeks Panel, Through Hole Bulk 2010 Pro Audio PDB18 Active 1 (Unlimited) 3 Pin EAR99 50°C -10°C 17mm 29.5mm ROHS3 Compliant No 20kOhm Panel Mount 8533.40.80.70 200mW Potentiometer e3 Tin (Sn) PDB181 200mW FLAT PC Pins ±20% Rotary 0.2W 200V Not Knurled and Slotted 1 HORIZONTAL 1 0.2W 1/5W None Carbon Linear 0.787 20.00mm M7 x 0.75 0.236 (6.00mm) Side Adjustment 300° Square - 0.670 x 0.650 Face x 0.650 H 17.00mmx16.50mmx16.50mm
3310Y-001-503L 3310Y-001-503L Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 12 Weeks Panel, Through Hole Bulk 2008 Pro Audio 3310 yes Active 1 (Unlimited) 3 Pin EAR99 125°C -40°C 9.53mm 9.53mm ROHS3 Compliant Lead Free No No SVHC 17.88mm 50kOhm Panel Mount 4.5g 200V 200V 8533.40.80.70 250mW Potentiometer e3 Matte Tin (Sn) 3310Y Variable Resistors 250mW WIRE PC Pins Conductive Plastic 6.35 mm ±20% ±1000ppm/°C 0.25W 3838 70°C Not Slotted 1 VERTICAL 1 0.25W 1/4W 5 % None Conductive Plastic Linear 0.500 12.70mm 1/4-32 0.125 (3.18mm) Top Adjustment 300° Square - 0.375 x 0.375 Face x 0.204 H 9.53mmx9.53mmx5.18mm
3386J-1-102LF 3386J-1-102LF Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 7 Weeks Through Hole Tube 2007 Trimpot® 3386 - Sealed Active 1 (Unlimited) Pin 125°C -55°C 4.83mm ROHS3 Compliant Tin 300V 9.525mm 1kOhm Through Hole 850.485694mg Square - 0.375 x 0.375 Face x 0.375 H 9.53mmx9.53mmx9.53mm 500mW 5.97mm e3 3386J POTENTIOMETER 500mW PC Pins ±10% Trimmer Pot ±100ppm/°C TRIMMER 0.5W Not 1 0.5W 1/2W Cermet 280 deg Side Adjustment
PTV09A-2020S-A103 PTV09A-2020S-A103 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 16 Weeks Snap in, Through Hole Tray 2013 Pro Audio PTV09 yes Active 1 (Unlimited) PCB ROHS3 Compliant 10kOhm Through Hole, Snap In PTV09A 50mW PC Pins, Board Locks ±20% Knurled and Slotted 1 0.05W 1/20W None Carbon Logarithmic 0.787 20.00mm 0.236 (6.00mm) Side Adjustment 280° Rectangular - 0.610 x 0.382 Face x 0.268 H 15.50mmx9.70mmx6.80mm
3224J-1-104G 3224J-1-104G Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 6 Weeks Surface Mount Tape & Reel (TR) 2011 Trimpot® 3224 - Sealed Active 1 (Unlimited) SMD/SMT 150°C -65°C 4.826mm ROHS3 Compliant 3.7084mm 4.572mm 100kOhms Surface Mount Rectangular - 0.181 x 0.138 Face x 0.146 H 4.60mmx3.50mmx3.71mm 250mW 3224J 250mW J Lead Cermet ±10% ±100ppm/°C 12 0.25W 1/4W Cermet Side Adjustment
3009Y-1-201LF 3009Y-1-201LF Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 7 Weeks Through Hole Tube 2007 Trimpot® 3009 - Sealed yes Active 1 (Unlimited) 3 Pin EAR99 150°C -55°C Blue ROHS3 Compliant Lead Free Tin not_compliant 200Ohm Through Hole 1.417476g Rectangular- 0.354 x 0.190 Facex0.750L 8.98mmx4.83mmx19.05mm 8533.40.80.50 750mW 5.33mm e3 3009Y 750mW WIRE PC Pins ±10% ±100ppm/°C TRIMMER 0.75W 400V 70°C 0.51 mm SCREW 15 HORIZONTAL 1 0.75W 3/4W Cermet 5400 deg Side Adjustment
TC33X-2-503G TC33X-2-503G Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 18 Weeks Surface Mount Tape & Reel (TR) 2011 Trimpot® TC33 - Open Frame yes Active 1 (Unlimited) 3 SMD/SMT 120°C -40°C ROHS3 Compliant No 1.1938mm 50kOhm Surface Mount Rectangular - 0.150 x 0.142 Face x 0.047 H 3.80mmx3.60mmx1.20mm 100mW e3 Matte Tin (Sn) TC33X 100mW WRAPAROUND J Lead Cermet, Potentiometer ±25% Trimmer Pot ±250ppm/°C TRIMMER 50V 70°C SCREW 1 VERTICAL 0.1W 1/10W Cermet Top Adjustment
91R2A-R22-B15/B15L 91R2A-R22-B15/B15L Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 20 Weeks Panel, Through Hole Tray 2010 91 yes Active 1 (Unlimited) PCB 125°C -40°C ROHS3 Compliant not_compliant 10kOhm Panel Mount 16.7g Potentiometer 91R2A 500mW PC Pins Conductive Plastic ±20% ±1000ppm/°C 2 Slotted 1 0.5W 1/2W None Conductive Plastic Linear 0.866 22.00mm M10 x 0.75 0.236 (6.00mm) Side Adjustment 300° Rectangular - 0.687 x 0.625 Face x 0.687 H 17.45mmx15.88mmx17.45mm
3059L-1-104MLF 3059L-1-104MLF Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 11 Weeks Panel, Wire Bulk 2005 Trimpot® 3059 - Sealed yes Active 1 (Unlimited) 3 Lead Wire 150°C -55°C 6.76mm ROHS3 Compliant Tin 100kOhm Panel Mount, Wire Leads 2.834952g Rectangular - 0.315 x 0.190 Facex1.250L 8.00mmx4.83mmx31.75mm 1W 152.4mm e3 3059L 1W FLEXIBLE WIRE Wire Leads ±10% ±100ppm/°C TRIMMER 1W 400V 70°C Not SCREW 22 HORIZONTAL 1 Cermet Linear 7920 deg Side Adjustment
PV32H501A02B00 PV32H501A02B00 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 6 Weeks Through Hole Bulk 2012 PV32 yes Active 1 (Unlimited) PC Pins ROHS3 Compliant 4.5974mm 500Ohm Through Hole Round - 0.260Dia x 0.181 H 6.60mmx4.60mm PV32H 500mW PC Pins Ceramic ±10% ±100ppm/°C 1 0.5W 1/2W Cermet Top Adjustment
6630S1D-B28-A203 6630S1D-B28-A203 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 7 Weeks Panel Bulk 2007 6630 yes Obsolete 1 (Unlimited) Solder ROHS3 Compliant not_compliant 20kOhm Panel Mount 6630S1D 1W Solder Lug Conductive Plastic ±15% ±500ppm/°C Slotted 1 None Conductive Plastic Linear 0.875 22.23mm 3/8-32 0.250 (6.35mm) User Defined 340° Round - 0.875Dia x 0.383 H 22.23mmx9.73mm
3303D-1-102E 3303D-1-102E Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tape & Reel (TR) 2011 Trimpot® 3303 - Open Frame yes Obsolete 1 (Unlimited) 3 SMD/SMT EAR99 125°C -40°C ROHS3 Compliant Tin 1.397mm 1kOhm Surface Mount Rectangular - 0.148 x 0.118 Face x 0.055 H 3.75mmx3.00mmx1.40mm 8533.40.80.50 TR, EMBOSSED, 7 INCH 150mW e3 3303D Variable Resistors 150mW WRAPAROUND J Lead ±25% Trimmer Pot ±250ppm/°C TRIMMER 50V 70°C SCREW 1 VERTICAL 0.15W Cermet 260 deg Top and Bottom Adjustment
PDB181-K415F-503B PDB181-K415F-503B Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 16 Weeks Panel Tray 2013 Pro Audio PDB18 yes Active 1 (Unlimited) PCB ROHS3 Compliant 50kOhm Panel Mount PDB181 200mW PC Pins ±20% Flatted 1 0.2W 1/5W None Carbon Linear 0.591 15.00mm M7 x 0.75 0.236 (6.00mm) Side Adjustment 300° Square - 0.670 x 0.650 Face x 0.650 H 17.00mmx16.50mmx16.50mm
3224G-1-504E 3224G-1-504E Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 6 Weeks Surface Mount Tape & Reel (TR) 2007 Trimpot® 3224 - Sealed yes Active 1 (Unlimited) 3 Gull Wing 150°C -65°C 6mm ROHS3 Compliant No SVHC 3.9116mm 500kOhm Surface Mount Rectangular - 0.181 x 0.138 Face x 0.154 H 4.60mmx3.50mmx3.90mm TR, EMBOSSED, 7 INCH 250mW e3 Matte Tin (Sn) 3224G 250mW Gull Wing Cermet, Potentiometer ±10% Trimmer Pot ±100ppm/°C TRIMMER 0.25W 1918 85°C Not SCREW 12 HORIZONTAL 0.25W 1/4W Cermet Linear 4320 deg Side Adjustment
3269W-1-503G 3269W-1-503G Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 11 Weeks Surface Mount Tape & Reel (TR) 2005 Trimpot® 3269 - Sealed no Active 2 (1 Year) 3 Gull Wing EAR99 150°C -65°C Non-RoHS Compliant not_compliant 7.4422mm 50kOhm Surface Mount Rectangular - 0.250 x 0.170 Face x 0.293 H 6.35mmx4.32mmx7.44mm 8533.40.80.50 TR, EMBOSSED, 13 INCH 250mW e0 Tin/Lead (Sn/Pb) 3269W 250mW L BEND Gull Wing Cermet, Potentiometer ±10% Trimmer Pot ±100ppm/°C TRIMMER 0.25W 300V 2517 85°C SCREW 12 VERTICAL 1 0.25W 1/4W Cermet Linear Top Adjustment
PVG5H201A01R00 PVG5H201A01R00 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tape & Reel (TR) 2003 PVG5 Obsolete 1 (Unlimited) ROHS3 Compliant 200Ohm Surface Mount Rectangular - 0.189 x 0.146 Face x 0.146 H 4.80mmx3.70mmx3.70mm PVG5H J Lead ±10% ±100ppm/°C 11 0.25W 1/4W Cermet Side Adjustment
PVC6Q203C01B00 PVC6Q203C01B00 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Bulk 2012 PVC6 Obsolete 1 (Unlimited) ROHS3 Compliant 20kOhm Through Hole Rectangular - 0.315 x 0.272 Face x 0.315 H 8.00mmx6.90mmx8.00mm PVC6Q PC Pins ±10% ±100ppm/°C 1 0.5W 1/2W Ceramic Side Adjustment
3296X-1-203LF 3296X-1-203LF Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 5 Weeks PCB, Panel, Through Hole Tube 2005 Trimpot® 3296 - Sealed yes Active Not Applicable 3 Pin EAR99 125°C -55°C Blue 4.83mm ROHS3 Compliant Lead Free Tin No No SVHC 10.03mm 20kOhm Through Hole 850.485694mg Rectangular - 0.395 x 0.190 Face x 0.395 H 10.03mmx4.83mmx10.03mm 300V 8533.40.80.50 500mW 6.4mm e3 3296X 500mW WIRE PC Pins ±10% Multi-Turn ±100ppm/°C TRIMMER 0.5W 70°C Not 0.51 mm SCREW 25 HORIZONTAL 1 0.5W 1/2W Cermet Linear Side Adjustment
RJR24FP104P RJR24FP104P Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 14 Weeks Through Hole Tube 2012 Trimpot® RJ24/RJR24-Sealed no Active 1 (Unlimited) 3 Pin EAR99 150°C -55°C 11.55mm ROHS3 Compliant 300V No 4.826mm 100kOhm Chassis Mount 708.738078mg Rectangular - 0.375 x 0.190 Face x 0.190 H 9.53mmx4.83mmx4.83mm 8533.40.80.50 500mW 8.26mm e0 Tin/Lead (Sn/Pb) RJR24 Variable Resistors 500mW WIRE PC Pins ±10% Trimmer Pot ±100ppm/°C TRIMMER 0.5W 3839 85°C MIL-PRF-39035 0.51 mm SCREW 25 HORIZONTAL 0.5W 1/2W Cermet Linear 9000 deg Side Adjustment
3266W-1-103 3266W-1-103 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 7 Weeks PCB, Through Hole Tube 2006 Trimpot® 3266 - Sealed no Active 1 (Unlimited) 3 Pin 125°C -55°C Blue 4.5mm Non-RoHS Compliant Contains Lead No No SVHC 7.239mm 10kOhm Through Hole 425.242847mg Rectangular - 0.250 x 0.170 Face x 0.270 H 6.35mmx4.31mmx6.85mm 500V 250mW e0 Tin/Lead (Sn/Pb) 3266W 250mW WIRE PC Pins ±10% Multi-Turn ±100ppm/°C TRIMMER 0.25W 300V 70°C Not SCREW 12 VERTICAL 1 0.25W 1/4W Cermet Linear Top Adjustment
RJR26FA104R RJR26FA104R Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 11 Weeks Through Hole Tube 2007 Trimpot® RJ26/RJR26-Sealed Active 1 (Unlimited) Non-RoHS Compliant not_compliant 100kOhm Through Hole Rectangular - 0.250 x 0.170 Face x 0.270 H 6.35mmx4.31mmx6.85mm RJR26 PC Pins ±10% ±100ppm/°C 12 0.25W 1/4W Cermet Top Adjustment
PVC6H204A01B00 PVC6H204A01B00 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Bulk 2004 PVC6 Obsolete 1 (Unlimited) Non-RoHS Compliant 200kOhms Through Hole Rectangular - 0.315 x 0.272 Face x 0.315 H 8.00mmx6.90mmx8.00mm PVC6H PC Pins ±10% ±100ppm/°C 1 0.5W 1/2W Ceramic Side Adjustment
RT12C2P203 RT12C2P203 Bourns Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 7 Weeks Through Hole Tube 2007 Trimpot® RT12 - Sealed no Active 1 (Unlimited) 3 Pin EAR99 150°C -55°C 4.83mm ROHS3 Compliant No 8mm 20kOhm Chassis Mount 2.83g Rectangular - 0.315 x 0.190 Facex1.250L 8.00mmx4.83mmx31.75mm WIRE WOUND 8533.31.00.00 1W 12.7mm RT12C2 PC Pins ±5% ±50ppm/°C TRIMMER 1W 70°C MIL-PRF-27208 0.71 mm SCREW 22 HORIZONTAL 1 Wirewound 7920 deg Side Adjustment
Settings Need Help?
Top FAQ's

How can I quickly find answers to my questions?

Please visit the Help & Support area of our website to find information regarding ordering, shipping, delivery and more.

What is my Order Status?

Registered users can track orders from their account dropdown, or click here. *Order Status may take 12 hours to update after initial order is placed.

How do I return product?

Users can begin the returns process by starting with our Returns Page.

How do I find price and availability?

Quotes can be created by registered users in myLists.

How do I create a 'HK JDW' Account?

Visit the Registration Page and enter the required information. You will receive an email confirmation when your registration is complete.

United Kingdom/GBP Summary
Fast Shipping Fast Delivery

Orders are typically delivered to United Kingdom within 48 hours depending on location.

Free Shipping Free Shipping

Free delivery to United Kingdom on orders of £33 or more. A delivery charge of £12 will be billed on all orders less than £33.

Incoterms Incoterms

DDP (Duty and customs paid by HK JDW)

Payment Options Payment Types

Credit account for qualified institutions and businesses

Payment in Advance by Wire Transfer

Visa Mastercard American Express PayPal Apple Pay Google Pay

Marketplace Marketplace Product

More Products From Fully Authorized Partners

Average Time to Ship 1-3 Days, extra ship charges may apply. Please see product page, cart, and checkout for actual ship speed.

Incoterms: CPT (Duty, customs, and applicable VAT/Tax due at time of delivery)

For more information visit Help & Support