ic芯片LTC6101品牌、價格、PDF參數(shù)

element14 - asia pacific • authorized distributor
元器件型號 廠商 描述 封裝14 # 數(shù)量 asia 價格 (usd)
ltc6101hvacs5#trmpbf linear technology ic, current s amp, hs, tsot23-5 1663920 2657
1 : $3.71
ltc6101hvahms8#pbf linear technology ic, sm, op amp, current sense 1330968 441
1 : $3.99
25 : $3.77
digi-key • ecia (neda) member • authorized distributor
元器件型號 廠商 描述 digi-key # 數(shù)量 價格
ltc6101hvbhs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvbhs5#trpbf-nd 0
2500 : $2.64
ltc6101acs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101acs5#trmpbf-nd 0
1000 : $1.65
ltc6101acms8#pbf linear technology ic amp current sense 8-msop ltc6101acms8#pbf-nd 0
900 : $1.65
ltc6101acms8#trpbf linear technology ic amp current sense 8-msop ltc6101acms8#trpbf-nd 0
2500 : $1.70
ltc6101acs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101acs5#trpbf-nd 0
2500 : $1.65
ltc6101ahms8#pbf linear technology ic amp current sense 8-msop ltc6101ahms8#pbf-nd 0
700 : $2.23
ltc6101ahms8#trpbf linear technology ic amp current sense 8-msop ltc6101ahms8#trpbf-nd 0
2500 : $2.28
ltc6101ahs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101ahs5#trmpbf-nd 0
1000 : $2.23
ltc6101hvaims8#trpbf linear technology ic amp current sense 8-msop ltc6101hvaims8#trpbf-nd 0
2500 : $2.53
ltc6101ahs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101ahs5#trpbf-nd 0
2500 : $2.23
ltc6101aims8#pbf linear technology ic amp current sense 8-msop ltc6101aims8#pbf-nd 0
750 : $1.98
ltc6101aims8#trpbf linear technology ic amp current sense 8-msop ltc6101aims8#trpbf-nd 0
2500 : $2.03
ltc6101ais5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101ais5#trmpbf-nd 1000
tape & reel
1000 : $1.98
ltc6101hvais5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvais5#trmpbfdkr-nd 3235
digi-reel®
1 : $4.82
25 : $4.30
100 : $3.87
ltc6101ais5#trpbf linear technology ic amp current sense tsot23-5 ltc6101ais5#trpbf-nd 0
2500 : $1.98
ltc6101bcs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101bcs5#trmpbf-nd 0
1000 : $1.59
ltc6101bcs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101bcs5#trpbf-nd 0
2500 : $1.59
ltc6101bhs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101bhs5#trmpbf-nd 0
1000 : $2.12
ltc6101hvbcs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvbcs5#trpbf-nd 0
2500 : $1.97
ltc6101bhs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101bhs5#trpbf-nd 0
2500 : $2.12
ltc6101bis5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101bis5#trmpbf-nd 0
1000 : $1.89
ltc6101bis5#trpbf linear technology ic amp current sense tsot23-5 ltc6101bis5#trpbf-nd 0
2500 : $1.89
ltc6101ccs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101ccs5#trmpbf-nd 0
1500 : $1.28
ltc6101hvchs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvchs5#trpbf-nd 0
2500 : $2.12
ltc6101ccs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101ccs5#trpbf-nd 0
2500 : $1.28
ltc6101chs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101chs5#trmpbf-nd 0
1000 : $1.71
ltc6101chs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101chs5#trpbf-nd 0
2500 : $1.71
ltc6101cis5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101cis5#trmpbf-nd 0
1000 : $1.53
ltc6101cis5#trpbf linear technology ic amp current sense tsot23-5 ltc6101cis5#trpbf-nd 0
2500 : $1.53
ltc6101hvacms8#pbf linear technology ic amp current sense 8-msop ltc6101hvacms8#pbf-nd 0
400 : $2.06
ltc6101hvacms8#trpbf linear technology ic amp current sense 8-msop ltc6101hvacms8#trpbf-nd 0
2500 : $2.2071
ltc6101hvacs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvacs5#trmpbfdkr-nd 4287
digi-reel®
1 : $4.03
25 : $3.60
100 : $3.24
ltc6101hvacs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvacs5#trmpbfct-nd 4287
cut tape
1 : $4.03
25 : $3.60
100 : $3.24
ltc6101hvacs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvacs5#trmpbftr-nd 4000
tape & reel
500 : $2.06
ltc6101hvacs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvacs5#trpbf-nd 0
2500 : $2.06
ltc6101hvahms8#pbf linear technology ic amp current sense 8-msop ltc6101hvahms8#pbf-nd 0
300 : $2.79
ltc6101hvahms8#trpbf linear technology ic amp current sense 8-msop ltc6101hvahms8#trpbf-nd 0
2500 : $2.84
ltc6101hvbhs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvbhs5#trmpbf-nd 0
1000 : $2.64
ltc6101hvahs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvahs5#trmpbfct-nd 3724
cut tape
1 : $5.40
25 : $4.8252
100 : $4.3425
ltc6101hvahs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvahs5#trmpbfdkr-nd 3724
digi-reel®
1 : $5.40
25 : $4.8252
100 : $4.3425
ltc6101hvahs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvahs5#trmpbftr-nd 3500
tape & reel
500 : $2.79
ltc6101hvahs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvahs5#trpbf-nd 0
2500 : $2.79
ltc6101hvaims8#pbf linear technology ic amp current sense 8-msop ltc6101hvaims8#pbf-nd 0
600 : $2.48
ltc6101hvais5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvais5#trmpbftr-nd 3000
tape & reel
500 : $2.48
ltc6101hvais5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvais5#trmpbfct-nd 3235
cut tape
1 : $4.82
25 : $4.30
100 : $3.87
ltc6101hvais5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvais5#trpbf-nd 0
2500 : $2.48
ltc6101hvbcs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvbcs5#trmpbf-nd 0
1000 : $1.97
ltc6101hvbis5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvbis5#trmpbf-nd 0
1000 : $2.35
ltc6101hvbis5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvbis5#trpbf-nd 0
2500 : $2.35
ltc6101hvccs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvccs5#trmpbf-nd 0
1000 : $1.59
ltc6101hvccs5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvccs5#trpbf-nd 0
2500 : $1.59
ltc6101hvchs5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvchs5#trmpbf-nd 0
1000 : $2.12
ltc6101hvcis5#trmpbf linear technology ic amp current sense tsot23-5 ltc6101hvcis5#trmpbf-nd 0
1000 : $1.89
ltc6101hvcis5#trpbf linear technology ic amp current sense tsot23-5 ltc6101hvcis5#trpbf-nd 0
2500 : $1.89
newark • ecia (neda) member • authorized distributor
元器件型號 廠商 描述 newark # 數(shù)量 價格
ltc6101hvahms8#pbf linear technology ic, current sense amp, 200khz, msop-8, each 56m9889 183
1-24 : $4.74
25-99 : $3.38
100 or more : $2.79
ltc6101hvacs5#trmpbf linear technology ic, current s amp, hs, tsot23-5, each 19p0739 2277
1-49 : $4.99
50-99 : $4.49
100-249 : $4.12
250-499 : $3.8
500 or more : $3.54
see more
farnell • ecia (neda) member • authorized distributor
元器件型號 廠商 描述 farnell # 數(shù)量 asia 數(shù)量 europe 價格 (gbp)
ltc6101hvacs5#trmpbf linear technology ic, current s amp, hs, tsot23-5 1663920 380 2898
1 : £3.7
10 : £2.9
100 : £2.42
250 : £2.02
500 : £1.8
see more
ltc6101hvacs5#trmpbf linear technology ic, current s amp, hs, tsot23-5 1663920 380 2898
1 : £3.7
10 : £2.9
100 : £2.42
250 : £2.02
500 : £1.8
see more
ltc6101hvacs5#trmpbf linear technology ic, current s amp, hs, tsot23-5 1663920 380 2898
1 : £3.7
10 : £2.9
100 : £2.42
250 : £2.02
500 : £1.8
see more
ltc6101hvacs5#trmpbf linear technology ic, current s amp, hs, tsot23-5 1663920 380 2898
1 : £3.7
10 : £2.9
100 : £2.42
250 : £2.02
500 : £1.8
see more
ltc6101hvahms8#pbf linear technology ic, sm, op amp, current sense 1330968 20 529
1 : £5.45
10 : £4.26
100 : £3.46
250 : £3.03
500 : £2.69
see more
ltc6101hvahms8#pbf linear technology ic, sm, op amp, current sense 1330968 20 529
1 : £5.45
10 : £4.26
100 : £3.46
250 : £3.03
500 : £2.69
see more
ltc6101hvahms8#pbf linear technology ic, sm, op amp, current sense 1330968 20 529
1 : £5.45
10 : £4.26
100 : £3.46
250 : £3.03
500 : £2.69
see more
arrow electronics • ecia (neda) member • authorized distributor
元器件型號 廠商 描述 arrow# 數(shù)量 價格
ltc6101bhs5 linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101bhs5 0
$2.58
ltc6101acms8#pbf linear technology sp amp current sense amp single 60v 8-pin msop ltc6101acms8#pbf 0
$2.00
ltc6101chs5#pbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101chs5#pbf 0
call 1-800-833-3557 for quote
ltc6101acms8#trpbf linear technology sp amp current sense amp single 60v 8-pin msop t/r ltc6101acms8#trpbf 0
call 1-800-833-3557 for quote
ltc6101acs5#pbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101acs5#pbf**mult1 400
click buy for pricing
ltc6101acs5#trm linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101acs5#trm 0
$2.00
ltc6101acs5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101acs5#trmpbf 500
$2.00
ltc6101acs5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101acs5#trpbf 0
$2.00
ltc6101ahms8 linear technology sp amp current sense amp single 60v 8-pin msop ltc6101ahms8 0
$2.71
ltc6101ahms8#pbf linear technology sp amp current sense amp single 60v 8-pin msop ltc6101ahms8#pbf 0
$2.71
ltc6101ahms8#tr linear technology sp amp current sense amp single 60v 8-pin msop t/r ltc6101ahms8#tr 0
call 1-800-833-3557 for quote
ltc6101ahms8#trpbf linear technology sp amp current sense amp single 60v 8-pin msop t/r ltc6101ahms8#trpbf 0
call 1-800-833-3557 for quote
ltc6101ahs5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101ahs5#trmpbf 0
$2.71
ltc6101ahs5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101ahs5#trpbf 0
$2.71
ltc6101aims8 linear technology sp amp current sense amp single 60v 8-pin msop ltc6101aims8 0
$2.41
ltc6101aims8#pbf linear technology sp amp current sense amp single 60v 8-pin msop ltc6101aims8#pbf 333
$2.41
ltc6101aims8#trpbf linear technology sp amp current sense amp single 60v 8-pin msop t/r ltc6101aims8#trpbf 0
call 1-800-833-3557 for quote
ltc6101ais5 linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101ais5 0
$2.41
ltc6101ais5#pbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101ais5#pbf**mult1 175
click buy for pricing
ltc6101ais5#trm linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101ais5#trm 0
$2.41
ltc6101ais5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101ais5#trmpbf 0
$2.41
ltc6101ais5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101ais5#trpbf 0
$2.41
ltc6101bcs5 linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101bcs5 0
$1.93
ltc6101bcs5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bcs5#pbf**mult1 500
click buy for pricing
ltc6101bcs5#tr linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bcs5#tr 0
$1.93
ltc6101bcs5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bcs5#trmpbf 0
$1.93
ltc6101bcs5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bcs5#trpbf 0
$1.93
ltc6101bhs5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bhs5#trmpbf 0
$2.58
ltc6101bhs5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bhs5#trpbf 0
$2.58
ltc6101bis5#pbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101bis5#pbf**mult1 540
click buy for pricing
ltc6101bis5#tr linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bis5#tr 0
$2.30
ltc6101bis5#trm linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bis5#trm 0
$2.30
ltc6101bis5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bis5#trmpbf 1500
$2.30
ltc6101bis5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101bis5#trpbf 7500
$2.30
ltc6101ccs5 linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101ccs5 0
$1.56
ltc6101ccs5#pbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101ccs5#pbf**mult1 1249
click buy for pricing
ltc6101ccs5#tr linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101ccs5#tr 0
$1.56
ltc6101ccs5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101ccs5#trmpbf 0
$1.56
ltc6101ccs5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101ccs5#trpbf 0
$1.56
ltc6101chs5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101chs5#trmpbf 0
$2.07
ltc6101chs5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101chs5#trpbf 0
$2.07
ltc6101cis5 linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101cis5 0
$1.85
ltc6101cis5#pbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 ltc6101cis5#pbf**mult1 514
click buy for pricing
ltc6101cis5#trm linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101cis5#trm 0
$1.85
ltc6101cis5#trmpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101cis5#trmpbf 1000
$1.85
ltc6101cis5#trpbf linear technology sp amp current sense amp single 60v 5-pin tsot-23 t/r ltc6101cis5#trpbf 2500
$1.85
ltc6101hvacms8#pbf linear technology sp amp current sense amp single 100v 8-pin msop ltc6101hvacms8#pbf 0
$2.51
ltc6101hvacms8#trpbf linear technology sp amp current sense amp single 100v 8-pin msop t/r ltc6101hvacms8#trpbf 0
call 1-800-833-3557 for quote
ltc6101hvacs5#pbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 ltc6101hvacs5#pbf**mult1 364
click buy for pricing
ltc6101hvacs5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvacs5#trmpbf 0
$2.51
ltc6101hvacs5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvacs5#trpbf 0
$2.51
ltc6101hvahms#trpbf linear technology ltc6101hvahms#trpbf 0
call 1-800-833-3557 for quote
ltc6101hvahms8 linear technology sp amp current sense amp single 100v 8-pin msop ltc6101hvahms8 0
$3.38
ltc6101hvahms8#pbf linear technology sp amp current sense amp single 100v 8-pin msop ltc6101hvahms8#pbf 188
$3.38
ltc6101hvahms8#trpbf linear technology sp amp current sense amp single 100v 8-pin msop t/r ltc6101hvahms8#trpbf 0
call 1-800-833-3557 for quote
ltc6101hvahs5#pbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 ltc6101hvahs5#pbf**mult1 430
click buy for pricing
ltc6101hvahs5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvahs5#trmpbf 0
$3.38
ltc6101hvahs5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvahs5#trpbf 0
$3.38
ltc6101hvaims8#pbf linear technology sp amp current sense amp single 100v 8-pin msop ltc6101hvaims8#pbf 121
$3.01
ltc6101hvaims8#trpbf linear technology sp amp current sense amp single 100v 8-pin msop t/r ltc6101hvaims8#trpbf 0
call 1-800-833-3557 for quote
ltc6101hvais5#pbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 ltc6101hvais5#pbf**mult1 707
click buy for pricing
ltc6101hvais5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvais5#trmpbf 0
$3.01
ltc6101hvais5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvais5#trpbf 0
$3.01
ltc6101hvbcs5 linear technology sp amp current sense amp single 100v 5-pin tsot-23 ltc6101hvbcs5 0
$2.39
ltc6101hvbcs5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbcs5#pbf**mult1 450
click buy for pricing
ltc6101hvbcs5#trm linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbcs5#trm 0
$2.39
ltc6101hvbcs5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbcs5#trmpbf 0
$2.39
ltc6101hvbcs5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbcs5#trpbf 0
$2.39
ltc6101hvbhs5 linear technology sp amp current sense amp single 100v 5-pin tsot-23 ltc6101hvbhs5 0
$3.20
ltc6101hvbhs5#pbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 ltc6101hvbhs5#pbf**mult1 680
click buy for pricing
ltc6101hvbhs5#trm linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbhs5#trm 0
$3.20
ltc6101hvbhs5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbhs5#trmpbf 0
$3.20
ltc6101hvbhs5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbhs5#trpbf 0
$3.20
ltc6101hvbis5#pbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 ltc6101hvbis5#pbf**mult1 618
click buy for pricing
ltc6101hvbis5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbis5#trmpbf 0
$2.85
ltc6101hvbis5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvbis5#trpbf 0
$2.85
ltc6101hvccs5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvccs5#trmpbf 0
$1.93
ltc6101hvccs5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvccs5#trpbf 0
$1.93
ltc6101hvchs5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvchs5#trmpbf 0
$2.58
ltc6101hvchs5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvchs5#trpbf 0
$2.58
ltc6101hvcis5#pbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 ltc6101hvcis5#pbf**mult1 450
click buy for pricing
ltc6101hvcis5#trmpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvcis5#trmpbf 0
$2.30
ltc6101hvcis5#trpbf linear technology sp amp current sense amp single 100v 5-pin tsot-23 t/r ltc6101hvcis5#trpbf 2500
$2.30
gerber electronics • ecia (neda) member • authorized distributor
元器件型號 廠商 描述 數(shù)量 價格
ltc6101acms8#pbf linear technology 65
$2.31