.hide-partial { max-height: none; } .show-more { display: none; }

Tube Oscillators

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Oscillators

List Images

Results: 1,527

Applied Filters:

Packaging = Tube

Manufacturer

Product Type

Package/Case

Frequency

Frequency Stability

Load Capacitance

Supply Voltage - Min

Supply Voltage - Max

Output Format

Termination Style

Minimum Operating Temperature

Maximum Operating Temperature

Length

Width

Height

Qualification

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Package/Case	Frequency	Frequency Stability	Load Capacitance	Supply Voltage - Min	Supply Voltage - Max	Output Format	Termination Style	Minimum Operating Temperature	Maximum Operating Temperature	Length	Width	Height	Qualification	Packaging
Standard Clock Oscillators MEMS OSC, AUTO, LVDS, 125MHz, 50ppm, 2.5-3.3V, -40 to 125C, 2.5x2.0mm DSA1123DA1-125.0000VAO Microchip Technology 1: $2.07 Non-Stocked Lead-Time 8 Weeks New Product	Mfr. Part No. DSA1123DA1-125.0000VAO Mouser Part No 579-A1123DA112500O New Product	Microchip Technology	Standard Clock Oscillators MEMS OSC, AUTO, LVDS, 125MHz, 50ppm, 2.5-3.3V, -40 to 125C, 2.5x2.0mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$2.07 $1.73 $1.72	Min.: 1 Mult.: 1		VDFN-6	125 MHz	50 PPM		2.25 V	3.6 V	LVDS	SMD/SMT	- 40 C	+ 125 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.9 mm (0.035 in)		Tube
MEMS Oscillators MEMS OSC, AUTO, LVDS, 100MHz, 50PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm DSA1123DL1-100.0000VAO Microchip Technology 280: $1.49 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1123DL1-100.0000VAO Mouser Part No 579-A1123DL1-100Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, LVDS, 100MHz, 50PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.49	Min.: 280 Mult.: 280	MEMS Oscillators	VDFN-6	100 MHz	50 PPM	2 pF	2.25 V	3.63 V	LVDS		- 40 C	+ 105 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, LVDS, 100MHz, 20PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm DSA1123DL3-100.0000VAO Microchip Technology 280: $1.61 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1123DL3-100.0000VAO Mouser Part No 579-A1123DL3-100Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, LVDS, 100MHz, 20PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.61	Min.: 280 Mult.: 280	MEMS Oscillators	VDFN-6	100 MHz	20 PPM	2 pF	2.25 V	3.63 V	LVDS		- 40 C	+ 105 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, LVDS, 125MHz, 20PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm DSA1123DL3-125.0000VAO Microchip Technology 280: $1.61 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1123DL3-125.0000VAO Mouser Part No 579-A1123DL3-125Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, LVDS, 125MHz, 20PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.61	Min.: 280 Mult.: 280	MEMS Oscillators	VDFN-6	125 MHz	20 PPM	2 pF	2.25 V	3.63 V	LVDS		- 40 C	+ 105 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 100MHz, 25PPM, 2.5-3.3V, -40 to 105C, 3.2 x 2.5mm DSA1124CL2-100.0000VAO Microchip Technology 330: $1.50 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1124CL2-100.0000VAO Mouser Part No 579-A1124CL2-100Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 100MHz, 25PPM, 2.5-3.3V, -40 to 105C, 3.2 x 2.5mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.50	Min.: 330 Mult.: 330	MEMS Oscillators	VDFN-6	100 MHz	25 PPM	2 pF	2.25 V	3.6 V	HCSL		- 40 C	+ 105 C	3.2 mm (0.126 in)	2.5 mm (0.098 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 100MHz, 50PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm DSA1124DL1-100.0000VAO Microchip Technology 280: $1.40 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1124DL1-100.0000VAO Mouser Part No 579-A1124DL1-100Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 100MHz, 50PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm Learn More about Microchip Technology microchip dsa1104 24 hcsl oscillators	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.40	Min.: 280 Mult.: 280	MEMS Oscillators	VDFN-6	100 MHz	50 PPM	2 pF	2.25 V	3.6 V	HCSL		- 40 C	+ 105 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 24MHz, 25PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm DSA1124DL2-024.0000VAO Microchip Technology 280: $1.47 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1124DL2-024.0000VAO Mouser Part No 579-A1124DL2-024Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 24MHz, 25PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm Learn More about Microchip Technology microchip dsa1104 24 hcsl oscillators	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.47	Min.: 280 Mult.: 280	MEMS Oscillators	VDFN-6													AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 100MHz, 25PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm DSA1124DL2-100.0000VAO Microchip Technology 280: $1.47 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1124DL2-100.0000VAO Mouser Part No 579-A1124DL2-100Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 100MHz, 25PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm Learn More about Microchip Technology microchip dsa1104 24 hcsl oscillators	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.47	Min.: 280 Mult.: 280	MEMS Oscillators	VDFN-6	100 MHz	25 PPM	2 pF	2.25 V	3.6 V	HCSL		- 40 C	+ 105 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 12MHz, 50PPM, 2.5-3.3V, -40 to 125C, 3.2 x 2.5mm DSA1125CA1-012.0000VAO Microchip Technology 330: $1.04 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1125CA1-012.0000VAO Mouser Part No 579-A1125CA1-012Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 12MHz, 50PPM, 2.5-3.3V, -40 to 125C, 3.2 x 2.5mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.04	Min.: 330 Mult.: 330	MEMS Oscillators	VDFN-6	12 MHz	50 PPM	15 pF	2.25 V	3.63 V	CMOS		- 40 C	+ 125 C	3.2 mm (0.126 in)	2.5 mm (0.098 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 27MHz, 50PPM, 2.5-3.3V, -40 to 125C, 2.5 x 2.0mm DSA1125DA1-027.0000VAO Microchip Technology 420: $1.00 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1125DA1-027.0000VAO Mouser Part No 579-A1125DA1-027Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 27MHz, 50PPM, 2.5-3.3V, -40 to 125C, 2.5 x 2.0mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.00	Min.: 420 Mult.: 420	MEMS Oscillators	VDFN-6	27 MHz	50 PPM	15 pF	2.25 V	3.63 V	CMOS		- 40 C	+ 125 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 33.3333MHz, 50PPM, 2.5-3.3V, -40 to 125C, 2.5 x 2.0mm DSA1125DA1-033.3333VAO Microchip Technology 420: $1.00 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1125DA1-033.3333VAO Mouser Part No 579-A1125DA133.3333Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 33.3333MHz, 50PPM, 2.5-3.3V, -40 to 125C, 2.5 x 2.0mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.00	Min.: 420 Mult.: 420	MEMS Oscillators	VDFN-6	33.3333 MHz	50 PPM	15 pF	2.25 V	3.63 V	CMOS		- 40 C	+ 125 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, LVCMOS, 20MHz, 50PPM, 1.8-3.3V, -40 to 85C, 2.5 x 2.0mm DSA6003JI1B-020.0000VAO Microchip Technology 700: $0.603 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. DSA6003JI1B-020.0000VAO Mouser Part No 579-A6003JI1B-020Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, LVCMOS, 20MHz, 50PPM, 1.8-3.3V, -40 to 85C, 2.5 x 2.0mm	Datasheet	Non-Stocked Lead-Time 12 Weeks	$0.603	Min.: 700 Mult.: 700	MEMS Oscillators	VLGA-4													AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, LVCMOS, 32.768KHz, 25PPM, 1.8-3.3V, -40 to 85C, 2.5 x 2.0mm DSA6003JI2B-032K768VAO Microchip Technology 560: $0.629 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. DSA6003JI2B-032K768VAO Mouser Part No 579-A6003JI2B32K768Q	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, LVCMOS, 32.768KHz, 25PPM, 1.8-3.3V, -40 to 85C, 2.5 x 2.0mm	Datasheet	Non-Stocked Lead-Time 12 Weeks	$0.629	Min.: 560 Mult.: 560	MEMS Oscillators	VLGA-4													AEC-Q100	Tube
Standard Clock Oscillators MEMS OSC, AUTO, LVCMOS, 25MHz, 50ppm, 1.8-3.3V, -40 to 125C, 3.2x2.5mm DSA6141CA1B-025.0000VAO Microchip Technology 1: $0.96 Non-Stocked Lead-Time 8 Weeks New Product	Mfr. Part No. DSA6141CA1B-025.0000VAO Mouser Part No 579-A6141CA1B02500O New Product	Microchip Technology	Standard Clock Oscillators MEMS OSC, AUTO, LVCMOS, 25MHz, 50ppm, 1.8-3.3V, -40 to 125C, 3.2x2.5mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$0.96 $0.80 $0.795	Min.: 1 Mult.: 1			25 MHz	50 PPM		1.71 V	3.63 V	LVCMOS	SMD/SMT	- 40 C	+ 125 C	3.2 mm (0.126 in)	2.5 mm (0.098 in)	0.9 mm (0.035 in)		Tube
MEMS Oscillators MEMS OSC, LVDS, 287MHz, 50PPM, 2.5-3.3V, -55 to 125C, 7.0 x 5.0mm DSC1123AM1-287.0000 Microchip Technology 150: $2.66 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. DSC1123AM1-287.0000 Mouser Part No 579-C1123AM1-287	Microchip Technology	MEMS Oscillators MEMS OSC, LVDS, 287MHz, 50PPM, 2.5-3.3V, -55 to 125C, 7.0 x 5.0mm	Datasheet	Non-Stocked Lead-Time 12 Weeks	$2.66	Min.: 150 Mult.: 50	MEMS Oscillators	VDFN-6		50 PPM	2 pF	2.25 V	3.6 V	LVDS		- 55 C	+ 125 C	7 mm (0.276 in)	5 mm (0.197 in)	0.85 mm (0.033 in)		Tube
MEMS Oscillators MEMS OSC, LVDS, 166MHz, 50PPM, 2.5-3.3V, -55 to 125C, 5.0x3.2mm DSC1123BM1-166.0000 Microchip Technology 216: $2.06 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. DSC1123BM1-166.0000 Mouser Part No 579-C1123BM1-166	Microchip Technology	MEMS Oscillators MEMS OSC, LVDS, 166MHz, 50PPM, 2.5-3.3V, -55 to 125C, 5.0x3.2mm	Datasheet	Non-Stocked Lead-Time 12 Weeks	$2.06	Min.: 216 Mult.: 72	MEMS Oscillators	CDFN-6		50 PPM	2 pF	2.25 V	3.6 V	LVDS		- 55 C	+ 125 C	5 mm (0.197 in)	3.2 mm (0.126 in)	0.85 mm (0.033 in)		Tube
MEMS Oscillators MEMS OSC, LVDS, 287MHz, 50PPM, 2.5-3.3V, -55 to 125C, 5.0x3.2mm DSC1123BM1-287.0000 Microchip Technology 216: $2.40 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. DSC1123BM1-287.0000 Mouser Part No 579-C1123BM1-287	Microchip Technology	MEMS Oscillators MEMS OSC, LVDS, 287MHz, 50PPM, 2.5-3.3V, -55 to 125C, 5.0x3.2mm	Datasheet	Non-Stocked Lead-Time 12 Weeks	$2.40	Min.: 216 Mult.: 72	MEMS Oscillators	CDFN-6		50 PPM	2 pF	2.25 V	3.6 V	LVDS		- 55 C	+ 125 C	5 mm (0.197 in)	3.2 mm (0.126 in)	0.85 mm (0.033 in)		Tube
MEMS Oscillators MEMS OSC, LVDS, 375MHz, 50PPM, 2.5-3.3V, -55 to 125C, 3.2 x 2.5mm DSC1123CM1-375.0000 Microchip Technology 220: $2.53 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSC1123CM1-375.0000 Mouser Part No 579-C1123CM1-375	Microchip Technology	MEMS Oscillators MEMS OSC, LVDS, 375MHz, 50PPM, 2.5-3.3V, -55 to 125C, 3.2 x 2.5mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$2.53	Min.: 220 Mult.: 110	MEMS Oscillators	VDFN-6		50 PPM	2 pF	2.25 V	3.6 V	LVDS		- 55 C	+ 125 C	3.2 mm (0.126 in)	2.5 mm (0.098 in)	0.85 mm (0.033 in)		Tube
MEMS Oscillators MEMS OSC, LVCMOS DSC1521CI2A-24M57600 Microchip Technology 1: $1.24 Non-Stocked Lead-Time 12 Weeks New Product	Mfr. Part No. DSC1521CI2A-24M57600 Mouser Part No 579-C1521CI2A24M5760 New Product	Microchip Technology	MEMS Oscillators MEMS OSC, LVCMOS	Datasheet	Non-Stocked Lead-Time 12 Weeks	$1.24 $1.04 $1.03	Min.: 1 Mult.: 1		VDFN-4	24.576 MHz	25 PPM	10 pF	2.25 V	3.6 V	CMOS		- 40 C	+ 85 C	3.2 mm	2.5 mm	0.85 mm		Tube
MEMS Oscillators MEMS OSC, LVCMOS, 5.308416MHz, 50ppm, 2.5-3.3V, -20 to 70C, 7.0x5.0mm DSC1522AE1A-5M308416 Microchip Technology 1: $1.20 Non-Stocked Lead-Time 8 Weeks New Product	Mfr. Part No. DSC1522AE1A-5M308416 Mouser Part No 579-C1522AE1A5M30841 New Product	Microchip Technology	MEMS Oscillators MEMS OSC, LVCMOS, 5.308416MHz, 50ppm, 2.5-3.3V, -20 to 70C, 7.0x5.0mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.20 $1.00 $0.988	Min.: 1 Mult.: 1		VDFN-4	5.308416 MHz	50 PPM	10 pF	2.25 V	3.6 V	CMOS		- 20 C	+ 70 C	7 mm	5 mm	0.85 mm		Tube
MEMS Oscillators MEMS OSC, LVCMOS DSC1522CI2A-24M57600 Microchip Technology 1: $1.24 Non-Stocked Lead-Time 12 Weeks New Product	Mfr. Part No. DSC1522CI2A-24M57600 Mouser Part No 579-C1522CI2A24M5760 New Product	Microchip Technology	MEMS Oscillators MEMS OSC, LVCMOS	Datasheet	Non-Stocked Lead-Time 12 Weeks	$1.24 $1.04 $1.03	Min.: 1 Mult.: 1		VDFN-4	24.576 MHz	25 PPM	10 pF	2.25 V	3.6 V	CMOS		- 40 C	+ 85 C	3.2 mm	2.5 mm	0.85 mm		Tube
MEMS Oscillators MEMS OSC, LVCMOS, 25MHz, 50ppm, 1.8v, -40 to 105C, 3.2x2.5mm DSC1525CL1A-25M00000 Microchip Technology 1: $1.30 Non-Stocked Lead-Time 12 Weeks New Product	Mfr. Part No. DSC1525CL1A-25M00000 Mouser Part No 579-C1525CL1A25M0000 New Product	Microchip Technology	MEMS Oscillators MEMS OSC, LVCMOS, 25MHz, 50ppm, 1.8v, -40 to 105C, 3.2x2.5mm	Datasheet	Non-Stocked Lead-Time 12 Weeks	$1.30 $1.09 $1.08	Min.: 1 Mult.: 1		VDFN-4	25 MHz	50 PPM	10 pF	1.71 V	1.98 V	CMOS		- 40 C	+ 105 C	3.2 mm	2.5 mm	0.85 mm		Tube
MEMS Oscillators MEMS OSC, LVCMOS, 24.48MHz, 20ppm, 1.8-3.3V, -40 to 125C, 3.2x2.5mm DSC6152CA3B-024.4800 Microchip Technology 1: $0.92 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSC6152CA3B-024.4800 Mouser Part No 579-C6152CA3B0244800	Microchip Technology	MEMS Oscillators MEMS OSC, LVCMOS, 24.48MHz, 20ppm, 1.8-3.3V, -40 to 125C, 3.2x2.5mm	Datasheet	Non-Stocked Lead-Time 8 Weeks	$0.92 $0.76 $0.757	Min.: 1 Mult.: 1	MEMS Oscillators	VDFN-4	24.48 MHz	20 PPM	15 pF	1.71 V	3.63 V	CMOS		- 40 C	+ 125 C	3.2 mm (0.126 in)	2.5 mm (0.098 in)	0.85 mm (0.033 in)		Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 156.25MHz, 50PPM, 2.5-3.3V, -40 to 105C, 3.2 x 2.5mm DSA1104CL1-156.2500VAO Microchip Technology 550: $1.61 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1104CL1-156.2500VAO Mouser Part No 579-DS1104CL11562500	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 156.25MHz, 50PPM, 2.5-3.3V, -40 to 105C, 3.2 x 2.5mm Learn More about Microchip Technology microchip dsa1104 24 hcsl oscillators	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.61	Min.: 550 Mult.: 550	MEMS Oscillators	VDFN-6	156.25 MHz	50 PPM	2 pF	2.25 V	3.6 V	HCSL		- 40 C	+ 105 C	3.2 mm (0.126 in)	2.5 mm (0.098 in)	0.85 mm (0.033 in)	AEC-Q100	Tube
MEMS Oscillators MEMS OSC, AUTO, HCSL, 156.25MHz, 25PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm DSA1104DL2-156.2500VAO Microchip Technology 560: $1.62 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. DSA1104DL2-156.2500VAO Mouser Part No 579-DS1104DL21562500	Microchip Technology	MEMS Oscillators MEMS OSC, AUTO, HCSL, 156.25MHz, 25PPM, 2.5-3.3V, -40 to 105C, 2.5 x 2.0mm Learn More about Microchip Technology microchip dsa1104 24 hcsl oscillators	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1.62	Min.: 560 Mult.: 560	MEMS Oscillators	VDFN-6	156.25 MHz	25 PPM	2 pF	2.25 V	3.6 V	HCSL		- 40 C	+ 105 C	2.5 mm (0.098 in)	2 mm (0.079 in)	0.85 mm (0.033 in)	AEC-Q100	Tube