|
|
微調電阻器 - 表面貼裝 1/4W 100ohm 10% Top Adj
- TSM4YL101KB25
- Vishay / Sfernice
-
1:
NT$376.43
-
440庫存量
|
Mouser 元件編號
72-TSM4YL101KB25
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 1/4W 100ohm 10% Top Adj
|
|
440庫存量
|
|
|
NT$376.43
|
|
|
NT$290.74
|
|
|
NT$274.61
|
|
|
NT$273.54
|
|
|
檢視
|
|
|
NT$251.67
|
|
|
NT$227.29
|
|
|
NT$214.38
|
|
最少： 1
倍數： 1
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
11 Turn
|
Cermet
|
Top Slot
|
100 Ohms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Bulk
|
|
|
|
微調電阻器 - 表面貼裝 TSM4YL202KR05
- TSM4YL202KR05
- Vishay / Sfernice
-
1:
NT$212.59
-
846庫存量
|
Mouser 元件編號
75-TSM4YL202KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 TSM4YL202KR05
|
|
846庫存量
|
|
|
NT$212.59
|
|
|
NT$196.82
|
|
|
NT$184.99
|
|
|
NT$177.46
|
|
|
NT$146.63
|
|
最少： 1
倍數： 1
:
200
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
|
Cermet
|
Top Slot
|
2 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 20Kohms 10%
- TSM4YL203KR05
- Vishay / Sfernice
-
1:
NT$290.74
-
946庫存量
|
Mouser 元件編號
72-TSM4YL203KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 20Kohms 10%
|
|
946庫存量
|
|
|
NT$290.74
|
|
|
NT$241.99
|
|
|
NT$212.59
|
|
|
NT$186.06
|
|
|
NT$185.70
|
|
|
檢視
|
|
|
NT$172.80
|
|
|
NT$153.44
|
|
最少： 1
倍數： 1
:
200
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
|
Cermet
|
Top Slot
|
20 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
|
|
Reel, Cut Tape
|
|
|
|
微調電阻器 - 表面貼裝 4MM SQ 10% 50K
- TSM4YJ503KR05
- Vishay / Sfernice
-
1:
NT$248.08
-
399庫存量
|
Mouser 元件編號
72-TSM4YJ503KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 4MM SQ 10% 50K
|
|
399庫存量
|
|
|
NT$248.08
|
|
|
NT$206.50
|
|
|
NT$181.40
|
|
|
NT$171.36
|
|
|
NT$158.46
|
|
|
檢視
|
|
|
NT$144.83
|
|
|
NT$141.97
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
50 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 65 C
|
+ 150 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 50Kohms 10%
- TSM4YL503KR05
- Vishay / Sfernice
-
1:
NT$293.61
-
784庫存量
|
Mouser 元件編號
72-TSM4YL503KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 50Kohms 10%
|
|
784庫存量
|
|
|
NT$293.61
|
|
|
NT$244.50
|
|
|
NT$214.38
|
|
|
NT$191.44
|
|
|
NT$180.33
|
|
|
檢視
|
|
|
NT$172.80
|
|
|
NT$158.10
|
|
最少： 1
倍數： 1
:
200
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
|
Cermet
|
Top Slot
|
50 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 2Kohms 12-TURN TOP ADJUST 10%
- TSM4YJ202KR05
- Vishay / Sfernice
-
1:
NT$296.48
-
525庫存量
|
Mouser 元件編號
72-TSM4YJ202KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 2Kohms 12-TURN TOP ADJUST 10%
|
|
525庫存量
|
|
|
NT$296.48
|
|
|
NT$247.01
|
|
|
NT$216.53
|
|
|
NT$204.70
|
|
|
NT$186.42
|
|
|
檢視
|
|
|
NT$171.36
|
|
|
NT$161.33
|
|
|
報價
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
2 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 65 C
|
+ 150 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 10Kohms 10%
- TSM4ZL103KR10
- Vishay / Sfernice
-
1:
NT$296.84
-
464庫存量
|
Mouser 元件編號
72-TSM4ZL103KR10
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 10Kohms 10%
|
|
464庫存量
|
|
|
NT$296.84
|
|
|
NT$247.01
|
|
|
NT$216.89
|
|
|
NT$205.06
|
|
|
NT$179.25
|
|
|
檢視
|
|
|
NT$197.89
|
|
|
NT$163.83
|
|
最少： 1
倍數： 1
:
500
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
|
Cermet
|
Side Slot
|
10 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
|
|
Reel, Cut Tape
|
|
|
|
微調電阻器 - 表面貼裝 5Kohms 10%
- TSM4YL502KR05
- Vishay / Sfernice
-
1:
NT$293.97
-
766庫存量
|
Mouser 元件編號
72-TSM4YL502KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 5Kohms 10%
|
|
766庫存量
|
|
|
NT$293.97
|
|
|
NT$244.50
|
|
|
NT$214.74
|
|
|
NT$191.80
|
|
|
NT$181.04
|
|
|
檢視
|
|
|
NT$166.34
|
|
|
NT$158.46
|
|
最少： 1
倍數： 1
:
200
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
|
Cermet
|
Top Slot
|
5 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 10Kohms 10%
- TSM4ZJ103KR10
- Vishay / Sfernice
-
1:
NT$276.76
-
451庫存量
|
Mouser 元件編號
72-TSM4ZJ103KR10
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 10Kohms 10%
|
|
451庫存量
|
|
|
NT$276.76
|
|
|
NT$230.16
|
|
|
NT$202.19
|
|
|
NT$191.08
|
|
|
NT$176.74
|
|
|
檢視
|
|
|
NT$179.61
|
|
|
NT$163.83
|
|
|
NT$163.48
|
|
|
報價
|
|
最少： 1
倍數： 1
:
500
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
10 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 65 C
|
+ 150 C
|
Reel, Cut Tape
|
|
|
|
微調電阻器 - 表面貼裝 50Kohms 10%
- TSM4ZJ503KR10
- Vishay / Sfernice
-
1:
NT$296.84
-
1,039庫存量
|
Mouser 元件編號
72-TSM4ZJ503KR10
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 50Kohms 10%
|
|
1,039庫存量
|
|
|
NT$296.84
|
|
|
NT$247.01
|
|
|
NT$216.89
|
|
|
NT$205.06
|
|
|
NT$173.87
|
|
|
檢視
|
|
|
NT$190.01
|
|
|
NT$163.12
|
|
|
報價
|
|
最少： 1
倍數： 1
:
500
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
50 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 65 C
|
+ 150 C
|
Reel, Cut Tape
|
|
|
|
微調電阻器 - 表面貼裝 TSM4YL104KR05
- TSM4YL104KR05
- Vishay / Sfernice
-
1:
NT$296.84
-
742庫存量
-
200預期2026/9/29
|
Mouser 元件編號
75-TSM4YL104KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 TSM4YL104KR05
|
|
742庫存量
200預期2026/9/29
|
|
|
NT$296.84
|
|
|
NT$247.01
|
|
|
NT$216.89
|
|
|
NT$193.59
|
|
|
NT$182.48
|
|
|
檢視
|
|
|
NT$173.51
|
|
|
NT$159.89
|
|
最少： 1
倍數： 1
:
200
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Top Slot
|
100 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 500ohms 10%
- TSM4ZL501KR10
- Vishay / Sfernice
-
1:
NT$274.61
-
291庫存量
|
Mouser 元件編號
72-TSM4ZL501KR10
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 500ohms 10%
|
|
291庫存量
|
|
|
NT$274.61
|
|
|
NT$230.16
|
|
|
NT$202.19
|
|
|
NT$191.08
|
|
|
NT$176.74
|
|
|
檢視
|
|
|
NT$179.61
|
|
|
NT$163.83
|
|
最少： 1
倍數： 1
:
500
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
|
Cermet
|
Side Slot
|
500 Ohms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
|
|
Reel, Cut Tape
|
|
|
|
微調電阻器 - 表面貼裝 200ohms 10%
- TSM4YJ201KR05
- Vishay / Sfernice
-
1:
NT$190.01
-
194庫存量
|
Mouser 元件編號
72-TSM4YJ201KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 200ohms 10%
|
|
194庫存量
|
|
|
NT$190.01
|
|
|
NT$188.57
|
|
|
NT$161.68
|
|
|
NT$145.55
|
|
|
NT$130.14
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
200 Ohms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 65 C
|
+ 150 C
|
Reel, Cut Tape
|
|
|
|
微調電阻器 - 表面貼裝 1Kohms 10%
- TSM4YJ102KR05
- Vishay / Sfernice
-
1:
NT$293.61
-
752庫存量
|
Mouser 元件編號
72-TSM4YJ102KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 1Kohms 10%
|
|
752庫存量
|
|
|
NT$293.61
|
|
|
NT$246.29
|
|
|
NT$216.18
|
|
|
NT$204.35
|
|
|
NT$189.29
|
|
|
檢視
|
|
|
NT$172.80
|
|
|
NT$164.91
|
|
|
NT$161.33
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
1 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 500ohms 10%
- TSM4YJ501KR05
- Vishay / Sfernice
-
1:
NT$292.18
-
856庫存量
|
Mouser 元件編號
72-TSM4YJ501KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 500ohms 10%
|
|
856庫存量
|
|
|
NT$292.18
|
|
|
NT$243.06
|
|
|
NT$213.31
|
|
|
NT$196.10
|
|
|
NT$182.48
|
|
|
檢視
|
|
|
NT$164.91
|
|
|
NT$159.53
|
|
|
報價
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
500 Ohms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 5Kohms 10%
- TSM4YJ502KR05
- Vishay / Sfernice
-
1:
NT$296.12
-
639庫存量
|
Mouser 元件編號
72-TSM4YJ502KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 5Kohms 10%
|
|
639庫存量
|
|
|
NT$296.12
|
|
|
NT$246.29
|
|
|
NT$216.18
|
|
|
NT$204.35
|
|
|
NT$189.29
|
|
|
檢視
|
|
|
NT$172.80
|
|
|
NT$164.91
|
|
|
NT$160.97
|
|
|
報價
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
5 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Reel, Cut Tape
|
|
|
|
微調電阻器 - 表面貼裝 1Kohms 10%
- TSM4YL102KR05
- Vishay / Sfernice
-
1:
NT$290.39
-
854庫存量
|
Mouser 元件編號
72-TSM4YL102KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 1Kohms 10%
|
|
854庫存量
|
|
|
NT$290.39
|
|
|
NT$241.63
|
|
|
NT$212.23
|
|
|
NT$189.29
|
|
|
NT$178.53
|
|
|
檢視
|
|
|
NT$172.80
|
|
|
NT$164.91
|
|
|
NT$156.31
|
|
最少： 1
倍數： 1
:
200
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
|
Cermet
|
Top Slot
|
1 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
|
|
Reel, Cut Tape
|
|
|
|
微調電阻器 - 表面貼裝 10Kohms 10%
- TSM4YL103KB25
- Vishay / Sfernice
-
1:
NT$385.75
-
321庫存量
|
Mouser 元件編號
72-TSM4YL103KB25
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 10Kohms 10%
|
|
321庫存量
|
|
|
NT$385.75
|
|
|
NT$297.91
|
|
|
NT$281.06
|
|
|
NT$265.65
|
|
|
檢視
|
|
|
NT$246.29
|
|
|
NT$232.67
|
|
|
NT$219.76
|
|
最少： 1
倍數： 1
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
11 Turn
|
Cermet
|
Top Slot
|
10 kOhms
|
250 mW (1/4 W)
|
50 V
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Bulk
|
|
|
|
微調電阻器 - 表面貼裝 10Kohms 10%
- TSM4YL103KR05
- Vishay / Sfernice
-
1:
NT$285.37
-
1,027庫存量
|
Mouser 元件編號
72-TSM4YL103KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 10Kohms 10%
|
|
1,027庫存量
|
|
|
NT$285.37
|
|
|
NT$237.33
|
|
|
NT$208.29
|
|
|
NT$186.06
|
|
|
NT$185.70
|
|
|
檢視
|
|
|
NT$178.17
|
|
|
NT$153.44
|
|
最少： 1
倍數： 1
:
200
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
13 Turn
|
Cermet
|
Top Slot
|
10 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 1/4W 500ohm 10% Top Adj
- TSM4YL501KB25
- Vishay / Sfernice
-
1:
NT$359.22
-
305庫存量
|
Mouser 元件編號
72-TSM4YL501KB25
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 1/4W 500ohm 10% Top Adj
|
|
305庫存量
|
|
|
NT$359.22
|
|
|
NT$277.48
|
|
|
NT$262.06
|
|
|
NT$247.37
|
|
|
檢視
|
|
|
NT$229.44
|
|
|
NT$219.76
|
|
|
報價
|
|
最少： 1
倍數： 1
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
11 Turn
|
Cermet
|
Top Slot
|
500 Ohms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Bulk
|
|
|
|
微調電阻器 - 表面貼裝 100ohms 10%
- TSM4YJ101KR05
- Vishay / Sfernice
-
1:
NT$282.14
-
236庫存量
-
250預期2026/8/11
|
Mouser 元件編號
72-TSM4YJ101KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 100ohms 10%
|
|
236庫存量
250預期2026/8/11
|
|
|
NT$282.14
|
|
|
NT$234.82
|
|
|
NT$206.14
|
|
|
NT$195.02
|
|
|
NT$180.33
|
|
|
檢視
|
|
|
NT$172.44
|
|
|
NT$164.91
|
|
|
NT$153.80
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Side Slot
|
100 Ohms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 65 C
|
+ 150 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 10Kohms 10%
- TSM4YJ103KR05
- Vishay / Sfernice
-
1:
NT$333.41
-
274庫存量
|
Mouser 元件編號
72-TSM4YJ103KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 10Kohms 10%
|
|
274庫存量
|
|
|
NT$333.41
|
|
|
NT$267.44
|
|
|
NT$244.86
|
|
|
NT$214.02
|
|
|
NT$196.10
|
|
|
檢視
|
|
|
NT$182.48
|
|
|
NT$170.65
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
Multiturn
|
Cermet
|
Top Slot
|
10 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
100 PPM / C
|
Vertical Adjustment
|
- 65 C
|
+ 150 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 4MM SQ 10% 100K
- TSM4YJ104KR05
- Vishay / Sfernice
-
1:
NT$293.97
-
239庫存量
|
Mouser 元件編號
72-TSM4YJ104KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 4MM SQ 10% 100K
|
|
239庫存量
|
|
|
NT$293.97
|
|
|
NT$244.50
|
|
|
NT$214.74
|
|
|
NT$202.91
|
|
|
NT$187.85
|
|
|
檢視
|
|
|
NT$172.44
|
|
|
NT$164.91
|
|
|
NT$159.89
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
11 Turn
|
Cermet
|
Side Slot
|
100 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 1/4W 1Mohm 10% Top Adj
- TSM4YJ105KR05
- Vishay / Sfernice
-
1:
NT$295.05
-
5庫存量
|
Mouser 元件編號
72-TSM4YJ105KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 1/4W 1Mohm 10% Top Adj
|
|
5庫存量
|
|
|
NT$295.05
|
|
|
NT$245.57
|
|
|
NT$215.46
|
|
|
NT$203.63
|
|
|
NT$189.65
|
|
|
檢視
|
|
|
NT$173.16
|
|
|
NT$161.68
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
11 Turn
|
Cermet
|
Side Slot
|
1 MOhms
|
40 mW
|
|
10 %
|
|
Vertical Adjustment
|
- 55 C
|
+ 125 C
|
Reel, Cut Tape, MouseReel
|
|
|
|
微調電阻器 - 表面貼裝 200Kohms 10%
- TSM4YJ204KR05
- Vishay / Sfernice
-
1:
NT$348.46
-
82庫存量
|
Mouser 元件編號
72-TSM4YJ204KR05
|
Vishay / Sfernice
|
微調電阻器 - 表面貼裝 200Kohms 10%
|
|
82庫存量
|
|
|
NT$348.46
|
|
|
NT$279.63
|
|
|
NT$255.97
|
|
|
NT$231.23
|
|
|
NT$196.10
|
|
|
檢視
|
|
|
NT$186.78
|
|
|
NT$180.68
|
|
|
報價
|
|
最少： 1
倍數： 1
:
250
|
|
|
TSM4
|
SMD/SMT
|
Multiturn
|
|
Cermet
|
Side Slot
|
200 kOhms
|
250 mW (1/4 W)
|
|
10 %
|
|
Vertical Adjustment
|
|
|
Reel, Cut Tape
|
|
臺灣