Product Search

    SEARCH NOW FOR ALL YOUR ANALOG DEVICES SOLUTIONS

    Radwell is here to supply you with all your plant floor needs.

    Radwell is not an authorised distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorisation by any rights holder.

    Filter Results
    Results 701-750 of 983.
    ANALOG DEVICES DAC8800FSZ

    ANALOG DEVICES

    DAC8800FSZ

    IC, DAC, 8BIT, 1.25MSPS, SOIC-20
    ✓ IN STOCK!
    £32.25 Price with VAT: £38.70 Buy Surplus As Low As £19.35 Price with VAT: £23.22
    £19.35 Price with VAT: £23.22
    ANALOG DEVICES DAC8512FSZ

    ANALOG DEVICES

    DAC8512FSZ

    IC, DAC, 12BIT, 62.5KSPS, SOIC-8; RESOLUTION (BITS) :12BIT; SAMPLING RATE:62.5KSPS; INPUT CHANNEL TYPE:SERIAL; DATA INTERFACE:3-WIRE, SERIAL; SUPPLY V
    ✓ IN STOCK!
    £9.51 Price with VAT: £11.41 Buy Surplus As Low As £5.70 Price with VAT: £6.84
    £5.70 Price with VAT: £6.84
    ANALOG DEVICES DAC8412FPCZ

    ANALOG DEVICES

    DAC8412FPCZ

    IC, DIGITAL TO ANALOG CONVERTER, 12 BIT, 167 KSPS, LCC-28, PARALLEL INPUT; SUPPLY VOLTAGE RANGE: 4.75 V TO 5.25 V / 14.25 V TO 15.75 V, ROHS COMPLIANT: YES
    ✓ IN STOCK!
    £113.37 Price with VAT: £136.04 Buy Surplus As Low As £66.19 Price with VAT: £79.43
    £66.19 Price with VAT: £79.43
    ANALOG DEVICES ADM233LJNZ

    ANALOG DEVICES

    ADM233LJNZ

    TRANSCEIVER, RS-232, PDIP20, 233, DEVICE TYPE:RS232 TRANSCEIVER, IC INTERFACE TYPE:RS232, NO. OF DRIVERS:2DRIVERS, NO. OF RECEIVERS:2RECEIVERS, SUPPLY VOLTAGE MIN:4.5V, SUPPLY VOLTAGE MAX:5. ...
    ✓ IN STOCK!
    £6.38 Price with VAT: £7.66 Buy Surplus As Low As £3.04 Price with VAT: £3.65
    £3.04 Price with VAT: £3.65
    ANALOG DEVICES ADM1485JRZ

    ANALOG DEVICES

    ADM1485JRZ

    LINE TRANSCEIVER, 1 FUNC, 1 DRIVER, 1 RCVR, BICMOS, SOIC-8
    ✓ IN STOCK!
    £3.04 Price with VAT: £3.65 Buy Surplus As Low As £1.83 Price with VAT: £2.20
    £1.83 Price with VAT: £2.20
    ANALOG DEVICES ADM1232ARNZ

    ANALOG DEVICES

    ADM1232ARNZ

    VOLTAGE SUPERVISOR/RESET IC, FIXED, 1 CHANNEL, +4.37,4.62V, HYBRID, SOIC-8
    ✓ IN STOCK!
    £3.26 Price with VAT: £3.91 Buy Surplus As Low As £1.96 Price with VAT: £2.35
    £1.96 Price with VAT: £2.35
    ANALOG DEVICES ADM709LARZ

    ANALOG DEVICES

    ADM709LARZ

    VOLTAGE SUPERVISOR/RESET IC, FIXED, 1 CHANNEL, SOIC-8
    ✓ IN STOCK!
    £2.04 Price with VAT: £2.45 Buy Surplus As Low As £1.22 Price with VAT: £1.46
    £1.22 Price with VAT: £1.46
    ANALOG DEVICES AD7400YRWZ

    ANALOG DEVICES

    AD7400YRWZ

    IC, MODULATOR ISOLATED, SMD, SOIC16; RESOLUTION (BITS) :16BIT; SAMPLING RATE:10MSPS; INPUT CHANNEL TYPE:DIFFERENTIAL; DATA INTERFACE:SERIAL; SUPPLY VO
    ✓ IN STOCK!
    £7.89 Price with VAT: £9.47 Buy Surplus As Low As £5.72 Price with VAT: £6.86
    £5.72 Price with VAT: £6.86
    ANALOG DEVICES AD823ARZ

    ANALOG DEVICES

    AD823ARZ

    OPERATIONAL AMPLIFIER, 2 FUNC, 3500UV OFFSET-MAX, BIPOLAR, SOIC-8
    ✓ IN STOCK!
    £8.14 Price with VAT: £9.77 Buy Surplus As Low As £4.88 Price with VAT: £5.86
    £4.88 Price with VAT: £5.86
    ANALOG DEVICES AD8215YRZ

    ANALOG DEVICES

    AD8215YRZ

    OPERATIONAL AMPLIFIER, CURRENT SHUNT MONITOR, 1 FUNC, SOIC-8
    ✓ IN STOCK!
    £6.75 Price with VAT: £8.10 Buy Surplus As Low As £3.07 Price with VAT: £3.68
    £3.07 Price with VAT: £3.68
    ANALOG DEVICES AD7390ARZ

    ANALOG DEVICES

    AD7390ARZ

    D/A CONVERTER, 1 FUNC, SERIAL INPUT LOADING, 70US SETTLING TIME, SOIC-8
    ✓ IN STOCK!
    £19.00 Price with VAT: £22.80 Buy Surplus As Low As £9.18 Price with VAT: £11.02
    £9.18 Price with VAT: £11.02
    ANALOG DEVICES AD7303BRZ

    ANALOG DEVICES

    AD7303BRZ

    IC, DAC,8BIT,DUAL,R-R,8-SOIC; RESOLUTION (BITS):8BIT; SAMPLING RATE:833KSPS; INPUT CHANNEL TYPE:SERIAL; SUPPLY VOLTAGE RANGE:2.7V TO 5.5V; ADC / DAC CASE STYLE:SOIC; NO. OF PINS:8PINS; DATA ...
    ✓ IN STOCK!
    £7.23 Price with VAT: £8.68 Buy Surplus As Low As £4.46 Price with VAT: £5.35
    £4.46 Price with VAT: £5.35
    ANALOG DEVICES AD7237JNZ

    ANALOG DEVICES

    AD7237JNZ

    D/A CONVERTER, 2 FUNC, PARALLEL, WORD INPUT LOADING, PDIP24
    ✓ IN STOCK!
    £90.58 Price with VAT: £108.70 Buy Surplus As Low As £55.83 Price with VAT: £67.00
    £55.83 Price with VAT: £67.00
    ANALOG DEVICES AD706ARZ

    ANALOG DEVICES

    AD706ARZ

    IC, OPERATIONAL AMPLIFIER, 2 FUNC, 150UV OFFSET-MAX, BIPOLAR, SOIC-8
    ✓ IN STOCK!
    £7.01 Price with VAT: £8.41 Buy Surplus As Low As £4.21 Price with VAT: £5.05
    £4.21 Price with VAT: £5.05
    ANALOG DEVICES AD652KPZ

    ANALOG DEVICES

    AD652KPZ

    DISCONTINUED BY MANUFACTURER, VOLTAGE TO FREQUENCY CONVERTER, 1 FUNC, 4MHZ, PQCC20
    ✓ IN STOCK!
    £9.41 Price with VAT: £11.29 Buy Surplus As Low As £5.65 Price with VAT: £6.78
    £5.65 Price with VAT: £6.78
    ANALOG DEVICES AD7572AJNZ10

    ANALOG DEVICES

    AD7572AJNZ10

    ADC, SUCCESSIVE APPROXIMATION, 12-BIT, 1 FUNC, 1 CHANNEL, PARALLEL, WORD ACCESS, CMOS, PDIP24
    ✓ IN STOCK!
    £20.63 Price with VAT: £24.76 Buy Surplus As Low As £12.38 Price with VAT: £14.86
    £12.38 Price with VAT: £14.86
    ANALOG DEVICES AD7549JNZ

    ANALOG DEVICES

    AD7549JNZ

    D/A CONVERTER, 1 FUNC, PARALLEL, 4 BITS INPUT LOADING, 0.8US SETTLING TIME, PDIP20
    ✓ IN STOCK!
    £55.60 Price with VAT: £66.72 Buy Surplus As Low As £39.25 Price with VAT: £47.10
    £39.25 Price with VAT: £47.10
    ANALOG DEVICES AD7548JNZ

    ANALOG DEVICES

    AD7548JNZ

    DISCONTINUED BY MANUFACTURER, D/A CONVERTER, 1 FUNC, PARALLEL, 8 BITS INPUT LOADING, PDIP20
    ✓ IN STOCK!
    £51.21 Price with VAT: £61.45 Buy Surplus As Low As £28.41 Price with VAT: £34.09
    £28.41 Price with VAT: £34.09
    ANALOG DEVICES AD7528JNZ

    ANALOG DEVICES

    AD7528JNZ

    INTEGRATED CIRCUIT, DIGITAL TO ANALOG CONVERTER, 2 CHANNEL, 8 BIT, 5.6 MSPS, DIP-20
    ✓ IN STOCK!
    £18.83 Price with VAT: £22.60 Buy Surplus As Low As £13.18 Price with VAT: £15.82
    £13.18 Price with VAT: £15.82
    ANALOG DEVICES AD420AR-32

    ANALOG DEVICES

    AD420AR-32

    DISCONTINUED BY MANUFACTURER, D/A CONVERTER, 1 FUNC, SERIAL INPUT LOADING, 2500US SETTLING TIME, WSOIC-24
    ✓ IN STOCK!
    £52.68 Price with VAT: £63.22 Buy Surplus As Low As £31.61 Price with VAT: £37.93
    £31.61 Price with VAT: £37.93
    ANALOG DEVICES ADG508AKRZ

    ANALOG DEVICES

    ADG508AKRZ

    SINGLE-ENDED MULTIPLEXER, 1 FUNC, 8 CHANNEL, CMOS, SOIC-16
    ✓ IN STOCK!
    £10.82 Price with VAT: £12.98 Buy Surplus As Low As £6.49 Price with VAT: £7.79
    £6.49 Price with VAT: £7.79
    ANALOG DEVICES ADG408BRZ

    ANALOG DEVICES

    ADG408BRZ

    SINGLE-ENDED MULTIPLEXER, 1 FUNC, 8 CHANNEL, CMOS, SOIC-16
    ✓ IN STOCK!
    £9.59 Price with VAT: £11.51 Buy Surplus As Low As £5.75 Price with VAT: £6.90
    £5.75 Price with VAT: £6.90
    ANALOG DEVICES AD844ANZ

    ANALOG DEVICES

    AD844ANZ

    OP AMP, 60MHZ, 2000V/US, DIP-8; NO. OF AMPLIFIERS:1 AMPLIFIER; BANDWIDTH:60MHZ; SLEW RATE:2000V/ S; SUPPLY VOLTAGE RANGE: 4.5V TO 18V; AMPLIFIER CASE STYLE:DIP; NO. OF PINS:8PINS; OPERATING ...
    ✓ IN STOCK!
    £18.33 Price with VAT: £22.00 Buy Surplus As Low As £12.60 Price with VAT: £15.12
    £12.60 Price with VAT: £15.12
    ANALOG DEVICES AD825ARZ

    ANALOG DEVICES

    AD825ARZ

    OPERATIONAL AMPLIFIER, 1 FUNC, 5000UV OFFSET-MAX, BIPOLAR, SOIC-8
    ✓ IN STOCK!
    £6.07 Price with VAT: £7.28 Buy Surplus As Low As £3.64 Price with VAT: £4.37
    £3.64 Price with VAT: £4.37
    ANALOG DEVICES AD822BRZ

    ANALOG DEVICES

    AD822BRZ

    OPERATIONAL AMPLIFIER, DUAL, 1.8 MHZ, 2, 3 V/ S, 1.5V TO 18V, SOIC, 8 ROHS COMPLIANT: YES
    ✓ IN STOCK!
    £10.51 Price with VAT: £12.61 Buy Surplus As Low As £6.70 Price with VAT: £8.04
    £6.70 Price with VAT: £8.04
    ANALOG DEVICES AD822ARZ

    ANALOG DEVICES

    AD822ARZ

    OPERATIONAL AMPLIFIER, 2 FUNC, 3000UV OFFSET-MAX, BIPOLAR, SOIC-8
    ✓ IN STOCK!
    £7.35 Price with VAT: £8.82 Buy Surplus As Low As £4.41 Price with VAT: £5.29
    £4.41 Price with VAT: £5.29
    ANALOG DEVICES AD7321BRUZ

    ANALOG DEVICES

    AD7321BRUZ

    IC, CONVERTER, ANALOG TO DIGITAL, 2 CHANNEL, 1 CONVERTER, 12 BITS, 500KS/S, 15V, 17MW, 14-TSSOP, 4.4MM WIDE
    ✓ IN STOCK!
    £9.25 Price with VAT: £11.10 Buy Surplus As Low As £4.66 Price with VAT: £5.59
    £4.66 Price with VAT: £5.59
    ANALOG DEVICES AD712JRZ

    ANALOG DEVICES

    AD712JRZ

    DISCONTINUED BY MANUFACTURER, OPERATIONAL AMPLIFIER, 2 FUNC, 4000UV OFFSET-MAX, BIPOLAR, SOIC-8
    ✓ IN STOCK!
    £8.58 Price with VAT: £10.30 Buy Surplus As Low As £4.82 Price with VAT: £5.78
    £4.82 Price with VAT: £5.78
    ANALOG DEVICES AD654JNZ

    ANALOG DEVICES

    AD654JNZ

    VOLTAGE TO FREQUENCY & FREQUENCY TO VOLTAGE IC, AD654 SERIES, 500 KHZ, PDIP-8, MOUNTING STYLE: THROUGH HOLE
    ✓ IN STOCK!
    £14.57 Price with VAT: £17.48 Buy Surplus As Low As £8.74 Price with VAT: £10.49
    £8.74 Price with VAT: £10.49
    ANALOG DEVICES AD8643ARZ

    ANALOG DEVICES

    AD8643ARZ

    IC, OP-AMP, 3.5MHZ, 3V/ S, SOIC-14; OP AMP TYPE:PRECISION; NO. OF AMPLIFIERS:4; BANDWIDTH:3.5MHZ; SLEW RATE:3V/ S; SUPPLY VOLTAGE RANGE:5V TO 26V; AMP
    ✓ IN STOCK!
    £6.27 Price with VAT: £7.52 Buy Surplus As Low As £4.18 Price with VAT: £5.02
    £4.18 Price with VAT: £5.02
    ANALOG DEVICES AD8604ARZ

    ANALOG DEVICES

    AD8604ARZ

    CMOS AMPLIFIER, 4 CIRCUIT, RAIL-TO-RAIL, 14-SOIC
    ✓ IN STOCK!
    £3.01 Price with VAT: £3.61 Buy Surplus As Low As £1.81 Price with VAT: £2.17
    £1.81 Price with VAT: £2.17
    ANALOG DEVICES AD7732BRUZ

    ANALOG DEVICES

    AD7732BRUZ

    ANALOG TO DIGITAL CONVERTER ADC, 24 BIT, 15.4KSPS, TSSOP-28; RESOLUTION (BITS):24BIT; SAMPLING RATE:15.4KSPS; SUPPLY VOLTAGE TYPE:SINGLE; SUPPLY VOLTAGE MIN:4.75V; SUPPLY VOLTAGE MAX:5.25V; ...
    ✓ IN STOCK!
    £15.17 Price with VAT: £18.20 Buy Surplus As Low As £11.24 Price with VAT: £13.49
    £11.24 Price with VAT: £13.49
    ANALOG DEVICES AD7705BRZ

    ANALOG DEVICES

    AD7705BRZ

    ADC, DELTA-SIGMA, 16-BIT, 1 FUNC, 2 CHANNEL, SERIAL ACCESS, CMOS, SOIC-16
    ✓ IN STOCK!
    £18.24 Price with VAT: £21.89 Buy Surplus As Low As £11.48 Price with VAT: £13.78
    £11.48 Price with VAT: £13.78
    ANALOG DEVICES ADM691AARWZ

    ANALOG DEVICES

    ADM691AARWZ

    POWER SUPPLY MANAGEMENT CIRCUIT, FIXED, 1 CHANNEL, CMOS, SOIC-16
    ✓ IN STOCK!
    £5.88 Price with VAT: £7.06 Buy Surplus As Low As £2.95 Price with VAT: £3.54
    £2.95 Price with VAT: £3.54
    ANALOG DEVICES ADG508AKNZ

    ANALOG DEVICES

    ADG508AKNZ

    IC, MULTIPLEXER, 8 CHANNEL, SUPPLY 16.5V, 10.8-16.5V, 1.5MA, 470MW, PROPAGATION DELAY TIME 300NS, ON OFF TIME 600NS, PDIP-16
    ✓ IN STOCK!
    £10.66 Price with VAT: £12.79 Buy Surplus As Low As £6.40 Price with VAT: £7.68
    £6.40 Price with VAT: £7.68
    ANALOG DEVICES ADG507AKRUZ

    ANALOG DEVICES

    ADG507AKRUZ

    DIFFERENTIAL MULTIPLEXER, 1 FUNC, 8 CHANNEL, CMOS, TSSOP-28
    ✓ IN STOCK!
    £19.01 Price with VAT: £22.81 Buy Surplus As Low As £13.42 Price with VAT: £16.10
    £13.42 Price with VAT: £16.10
    ANALOG DEVICES ADG451BNZ

    ANALOG DEVICES

    ADG451BNZ

    IC, ANALOG SWITCH, QUAD, SPST-NO, DIP-16; ANALOG SWITCH TYPE:SPST; NO. OF CHANNELS:4; ON STATE RESISTANCE MAX:5OHM; TURN OFF TIME:60NS; TURN ON TIME:7
    ✓ IN STOCK!
    £5.24 Price with VAT: £6.29 Buy Surplus As Low As £4.24 Price with VAT: £5.09
    £4.24 Price with VAT: £5.09
    ANALOG DEVICES ADG433BRZ

    ANALOG DEVICES

    ADG433BRZ

    IC, ANALOG SWITCH, 4 CHANNEL, 4 X SPST, 24OHMS, SUPPLY 5-13.2V, DUAL 13.5-16.5V, ON 165NS, OFF 130NS, 7.7UW, SOIC-16
    ✓ IN STOCK!
    £3.60 Price with VAT: £4.32 Buy Surplus As Low As £2.40 Price with VAT: £2.88
    £2.40 Price with VAT: £2.88
    ANALOG DEVICES ADG419BNZ

    ANALOG DEVICES

    ADG419BNZ

    ANALOG SWITCH, SINGLE, SPDT, DIP-8; ANALOG SWITCH TYPE:SPDT; NO. OF CHANNELS:1CHANNELS; ON STATE RESISTANCE MAX:35OHM; SUPPLY VOLTAGE RANGE:4.5V TO 5.5V; ANALOG SWITCH CASE:DIP; NO. OF PINS: ...
    ✓ IN STOCK!
    £3.37 Price with VAT: £4.04 Buy Surplus As Low As £2.02 Price with VAT: £2.42
    £2.02 Price with VAT: £2.42
    ANALOG DEVICES AD7524JRZ

    ANALOG DEVICES

    AD7524JRZ

    D/A CONVERTER, 1 FUNC, PARALLEL, 8 BITS INPUT LOADING, 0.5US SETTLING TIME, SOIC-16, ROHS
    ✓ IN STOCK!
    £11.96 Price with VAT: £14.35 Buy Surplus As Low As £9.64 Price with VAT: £11.57
    £9.64 Price with VAT: £11.57
    ANALOG DEVICES AD2S90APZ

    ANALOG DEVICES

    AD2S90APZ

    SYNCHRO OR RESOLVER TO DIGITAL CONVERTER, CMOS, PQCC20, ROHS
    ✓ IN STOCK!
    £97.12 Price with VAT: £116.54 Buy Surplus As Low As £55.11 Price with VAT: £66.13
    £55.11 Price with VAT: £66.13
    ANALOG DEVICES AD9225ARZ

    ANALOG DEVICES

    AD9225ARZ

    ANALOGUE TO DIGITAL CONVERTER, 12 BIT, 25 MSPS, DIFFERENTIAL, SINGLE ENDED, PARALLEL, SINGLE
    ✓ IN STOCK!
    £41.81 Price with VAT: £50.17 Buy Surplus As Low As £25.09 Price with VAT: £30.11
    £25.09 Price with VAT: £30.11
    ANALOG DEVICES AD9201ARSZ

    ANALOG DEVICES

    AD9201ARSZ

    ANALOG TO DIGITAL CONVERTER ADC, 10 BIT, 20MHZ, SSOP-28; RESOLUTION (BITS):10BIT; SAMPLING RATE:20MSPS; SUPPLY VOLTAGE TYPE:SINGLE; SUPPLY VOLTAGE MIN
    ✓ IN STOCK!
    £8.83 Price with VAT: £10.60 Buy Surplus As Low As £5.30 Price with VAT: £6.36
    £5.30 Price with VAT: £6.36
    ANALOG DEVICES AD790AQ

    ANALOG DEVICES

    AD790AQ

    DISCONTINUED BY MANUFACTURER, PRECISION COMPARATOR, SINGLE, 45NS, DIP-8 PINS, 4.5V TO 7V
    ✓ IN STOCK!
    £51.59 Price with VAT: £61.91 Buy Surplus As Low As £38.21 Price with VAT: £45.85
    £38.21 Price with VAT: £45.85
    ANALOG DEVICES ADG212AKNZ

    ANALOG DEVICES

    ADG212AKNZ

    ANALOG SWITCH, QUAD, SPST-NC, DIP-16; ANALOG SWITCH TYPE:SPST; NO. OF CHANNELS:4CHANNELS; ON STATE RESISTANCE MAX:115OHM; SUPPLY VOLTAGE RANGE: 15V; ANALOG SWITCH CASE:DIP; NO. OF PINS:16PIN ...
    ✓ IN STOCK!
    £4.48 Price with VAT: £5.38 Buy Surplus As Low As £2.69 Price with VAT: £3.23
    £2.69 Price with VAT: £3.23
    ANALOG DEVICES AD7245AARZ

    ANALOG DEVICES

    AD7245AARZ

    D/A CONVERTER, 1 FUNC, PARALLEL, WORD INPUT LOADING, 7US SETTLING TIME, SOIC-24
    ✓ IN STOCK!
    £31.57 Price with VAT: £37.88 Buy Surplus As Low As £18.94 Price with VAT: £22.73
    £18.94 Price with VAT: £22.73
    ANALOG DEVICES AD711JNZ

    ANALOG DEVICES

    AD711JNZ

    OPERATIONAL AMPLIFIER, 1 FUNC, 3000UV OFFSET-MAX, BIPOLAR, PDIP8
    ✓ IN STOCK!
    £6.60 Price with VAT: £7.92 Buy Surplus As Low As £3.96 Price with VAT: £4.75
    £3.96 Price with VAT: £4.75
    ANALOG DEVICES AD708AQ

    ANALOG DEVICES

    AD708AQ

    OPERATIONAL AMPLIFIER, 2 FUNC, 150UV OFFSET-MAX, BIPOLAR, CDIP8
    ✓ IN STOCK!
    £22.74 Price with VAT: £27.29 Buy Surplus As Low As £12.08 Price with VAT: £14.50
    £12.08 Price with VAT: £14.50
    ANALOG DEVICES AD679JN

    ANALOG DEVICES

    AD679JN

    ANALOG TO DIGITAL CONVERTER ADC, 14 BIT, 128KSPS, DIP-28; RESOLUTION (BITS):14BIT; SAMPLING RATE:128KSPS; SUPPLY VOLTAGE TYPE:-; SUPPLY VOLTAGE MIN:11
    ✓ IN STOCK!
    £86.77 Price with VAT: £104.12 Buy Surplus As Low As £52.11 Price with VAT: £62.53
    £52.11 Price with VAT: £62.53
    ANALOG DEVICES AD677JNZ

    ANALOG DEVICES

    AD677JNZ

    IC, ADC, 16BIT, DIP-16; RESOLUTION (BITS):16BIT; SAMPLING RATE:100KSPS; INPUT CHANNEL TYPE:SINGLE ENDED; DATA INTERFACE:SERIAL; SUPPLY VOLTAGE RANGE -
    ✓ IN STOCK!
    £40.04 Price with VAT: £48.05 Buy Surplus As Low As £24.03 Price with VAT: £28.84
    £24.03 Price with VAT: £28.84
    Previous Next
    10 11 12 13 14 15 16 17 18 19 20