|
|
RFケーブルアセンブリ SMP St Plg to SMP RA Plg 0.086 CfCbl 6in
- 095-725-118-006
- Amphenol RF
-
1:
¥7,587.2
-
3在庫
-
36予想2026/02/25
|
Mouser 部品番号
523-095-725-118-006
|
Amphenol RF
|
RFケーブルアセンブリ SMP St Plg to SMP RA Plg 0.086 CfCbl 6in
|
|
3在庫
36予想2026/02/25
|
|
|
¥7,587.2
|
|
|
¥6,140.8
|
|
|
¥5,876.8
|
|
|
¥5,388.8
|
|
|
表示
|
|
|
¥5,176
|
|
|
¥5,062.4
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
SMP
|
Plug (Male)
|
Straight
|
SMP
|
Plug (Male)
|
Right Angle
|
152.4 mm (6 in)
|
50 Ohms
|
20 GHz
|
0.086 Conformable
|
Gray
|
Bulk
|
|
|
|
RFケーブルアセンブリ SMP St Plg to SMP RA Plg 0.047 CfCbl 4in
- 095-725-120-004
- Amphenol RF
-
1:
¥7,019.2
-
17在庫
|
Mouser 部品番号
523-095-725-120-004
|
Amphenol RF
|
RFケーブルアセンブリ SMP St Plg to SMP RA Plg 0.047 CfCbl 4in
|
|
17在庫
|
|
|
¥7,019.2
|
|
|
¥6,148.8
|
|
|
¥5,369.6
|
|
|
¥4,945.6
|
|
|
¥4,697.6
|
|
最低： 1
複数： 1
|
|
|
SMP
|
Plug (Male)
|
Straight
|
SMP
|
Plug (Male)
|
Right Angle
|
101.6 mm (4 in)
|
50 Ohms
|
20 GHz
|
0.047 Conformable Semi-Rigid
|
Gray
|
Bulk
|
|
|
|
RFケーブルアセンブリ BNC Right Angle Plug to SMB Straight Plug RG-174 50 Ohm 72 inches (1829 mm)
- 095-850-237-072
- Amphenol RF
-
1:
¥6,334.4
-
19在庫
|
Mouser 部品番号
523-095-850-237-072
|
Amphenol RF
|
RFケーブルアセンブリ BNC Right Angle Plug to SMB Straight Plug RG-174 50 Ohm 72 inches (1829 mm)
|
|
19在庫
|
|
|
¥6,334.4
|
|
|
¥5,548.8
|
|
|
¥5,139.2
|
|
|
¥4,913.6
|
|
|
表示
|
|
|
¥4,894.4
|
|
|
¥4,889.6
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
BNC
|
Plug (Male)
|
Right Angle
|
SMB
|
Plug (Male)
|
Straight
|
1.829 m (6 ft)
|
50 Ohms
|
1 GHz
|
RG-174
|
Black
|
Bulk
|
|
|
|
RFケーブルアセンブリ BNC BLKHD STRGT RG-58 Cable, .75 M
- 095-850-246M075
- Amphenol RF
-
1:
¥4,516.8
-
25在庫
|
Mouser 部品番号
523-095-850-246M075
|
Amphenol RF
|
RFケーブルアセンブリ BNC BLKHD STRGT RG-58 Cable, .75 M
|
|
25在庫
|
|
|
¥4,516.8
|
|
|
¥3,940.8
|
|
|
¥3,768
|
|
|
¥3,587.2
|
|
|
表示
|
|
|
¥3,398.4
|
|
|
¥3,286.4
|
|
|
¥3,273.6
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
BNC
|
Jack (Female)
|
Bulkhead
|
SMA
|
Plug (Male)
|
Straight
|
750 mm (29.528 in)
|
50 Ohms
|
3 GHz
|
RG-58
|
Black
|
Bulk
|
|
|
|
RFケーブルアセンブリ BNC Straight Jack to BNC Straight Jack RG-174 50 Ohm 24 Inches (610 mm)
- 095-850-261-024
- Amphenol RF
-
1:
¥4,377.6
-
10在庫
|
Mouser 部品番号
523-095-850-261-024
|
Amphenol RF
|
RFケーブルアセンブリ BNC Straight Jack to BNC Straight Jack RG-174 50 Ohm 24 Inches (610 mm)
|
|
10在庫
|
|
|
¥4,377.6
|
|
|
¥3,721.6
|
|
|
¥3,440
|
|
|
¥3,251.2
|
|
|
表示
|
|
|
¥3,142.4
|
|
|
¥3,038.4
|
|
|
¥2,984
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
BNC
|
Jack (Female)
|
Straight
|
BNC
|
Jack (Female)
|
Straight
|
610 mm (24.016 in)
|
50 Ohms
|
6 GHz
|
RG-174
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ SMA SJ to Blunt Cut .047 Con Cable 5 In
- 095-902-462-005
- Amphenol RF
-
1:
¥5,750.4
-
29在庫
|
Mouser 部品番号
523-095-902-462-005
|
Amphenol RF
|
RFケーブルアセンブリ SMA SJ to Blunt Cut .047 Con Cable 5 In
|
|
29在庫
|
|
|
¥5,750.4
|
|
|
¥4,718.4
|
|
|
¥4,315.2
|
|
|
¥3,902.4
|
|
|
表示
|
|
|
¥3,699.2
|
|
|
¥3,481.6
|
|
|
¥3,464
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
SMA
|
Jack (Female)
|
Straight
|
No Connector
|
|
|
127 mm (5 in)
|
50 Ohms
|
18 GHz
|
0.047 Conformable Semi-Rigid
|
Gray
|
Bulk
|
|
|
|
RFケーブルアセンブリ SMA SJ to Blunt Cut .047 Con Cable 8 In
- 095-902-462-008
- Amphenol RF
-
1:
¥5,915.2
-
1在庫
-
25予想2026/02/16
|
Mouser 部品番号
523-095-902-462-008
|
Amphenol RF
|
RFケーブルアセンブリ SMA SJ to Blunt Cut .047 Con Cable 8 In
|
|
1在庫
25予想2026/02/16
|
|
|
¥5,915.2
|
|
|
¥4,912
|
|
|
¥4,824
|
|
|
¥4,540.8
|
|
|
表示
|
|
|
¥4,486.4
|
|
|
¥4,412.8
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
SMA
|
Jack (Female)
|
Straight
|
No Connector
|
|
|
203.2 mm (8 in)
|
50 Ohms
|
18 GHz
|
0.047 Conformable Semi-Rigid
|
Gray
|
Bulk
|
|
|
|
RFケーブルアセンブリ SMA SJ to Blunt Cut .085 Con Cable 5 In
- 095-902-463-005
- Amphenol RF
-
1:
¥4,780.8
-
22在庫
|
Mouser 部品番号
523-095-902-463-005
|
Amphenol RF
|
RFケーブルアセンブリ SMA SJ to Blunt Cut .085 Con Cable 5 In
|
|
22在庫
|
|
|
¥4,780.8
|
|
|
¥4,062.4
|
|
|
¥3,560
|
|
|
¥3,313.6
|
|
|
表示
|
|
|
¥3,126.4
|
|
|
¥2,998.4
|
|
|
¥2,881.6
|
|
最低： 1
複数： 1
|
|
|
SMA
|
Jack (Female)
|
Straight
|
No Connector
|
|
|
127 mm (5 in)
|
50 Ohms
|
18 GHz
|
Coaxial
|
Gray
|
Bulk
|
|
|
|
RFケーブルアセンブリ SMA RA to SMA SP on LMR-240 Cbl .75M
- 095-902-480M075
- Amphenol RF
-
1:
¥9,224
-
22在庫
|
Mouser 部品番号
523-095-902-480M075
|
Amphenol RF
|
RFケーブルアセンブリ SMA RA to SMA SP on LMR-240 Cbl .75M
|
|
22在庫
|
|
|
¥9,224
|
|
|
¥8,094.4
|
|
|
¥7,782.4
|
|
|
¥7,523.2
|
|
|
¥7,107.2
|
|
最低： 1
複数： 1
|
|
|
SMA
|
Plug (Male)
|
Straight
|
SMA
|
Plug (Male)
|
Right Angle
|
750 mm (29.528 in)
|
50 Ohms
|
6 GHz
|
LMR-240
|
Black
|
Bulk
|
|
|
|
RFケーブルアセンブリ MMCX Str Pl to SMA S G-316 50 Ohm 18 Inch
- 095-902-529-018
- Amphenol RF
-
1:
¥4,609.6
-
40在庫
|
Mouser 部品番号
523-095-902-529-018
|
Amphenol RF
|
RFケーブルアセンブリ MMCX Str Pl to SMA S G-316 50 Ohm 18 Inch
|
|
40在庫
|
|
|
¥4,609.6
|
|
|
¥3,955.2
|
|
|
¥3,656
|
|
|
¥3,360
|
|
|
表示
|
|
|
¥3,195.2
|
|
|
¥3,120
|
|
|
¥3,097.6
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
MMCX
|
Plug (Male)
|
Straight
|
SMA
|
Jack (Female)
|
Bulkhead
|
457.2 mm (18 in)
|
50 Ohms
|
6 GHz
|
RG-316
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ RF Cable Assembly RP Inch Length 50 Ohms
- 095-902-535-036
- Amphenol RF
-
1:
¥5,112
-
25在庫
|
Mouser 部品番号
523-095-902-535-036
|
Amphenol RF
|
RFケーブルアセンブリ RF Cable Assembly RP Inch Length 50 Ohms
|
|
25在庫
|
|
|
¥5,112
|
|
|
¥4,859.2
|
|
|
¥4,769.6
|
|
|
¥4,436.8
|
|
|
表示
|
|
|
¥4,212.8
|
|
|
¥4,092.8
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
RP-SMA
|
Plug (Male)
|
Straight
|
RP-SMA
|
Jack (Female)
|
Bulkhead
|
914.4 mm (36 in)
|
50 Ohms
|
6 GHz
|
RG-316
|
Black
|
Bulk
|
|
|
|
RFケーブルアセンブリ SMB Str Plug to SMB Str Plug RG-58 50 Oh
- 095-700-38-072
- Amphenol RF
-
1:
¥6,702.4
-
10在庫
|
Mouser 部品番号
523-09570038072
|
Amphenol RF
|
RFケーブルアセンブリ SMB Str Plug to SMB Str Plug RG-58 50 Oh
|
|
10在庫
|
|
|
¥6,702.4
|
|
|
¥5,870.4
|
|
|
¥5,128
|
|
|
¥4,920
|
|
|
表示
|
|
|
¥4,857.6
|
|
|
¥4,512
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
SMB
|
Plug (Male)
|
Straight
|
SMB
|
Plug (Male)
|
Straight
|
1.829 m (6 ft)
|
50 Ohms
|
4 GHz
|
RG-58
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ AMC RA PI to RP-TNC Str Bkhd
- 095-850-263-050
- Amphenol RF
-
1:
¥5,473.6
-
23在庫
|
Mouser 部品番号
523-095850263050
|
Amphenol RF
|
RFケーブルアセンブリ AMC RA PI to RP-TNC Str Bkhd
|
|
23在庫
|
|
|
¥5,473.6
|
|
|
¥4,708.8
|
|
|
¥4,168
|
|
|
¥3,915.2
|
|
|
表示
|
|
|
¥3,753.6
|
|
|
¥3,681.6
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
AMC
|
Plug (Male)
|
Right Angle
|
RP-TNC
|
Jack (Female)
|
Bulkhead
|
50 mm (1.969 in)
|
50 Ohms
|
6 GHz
|
|
Black
|
Bulk
|
|
|
|
RFケーブルアセンブリ BNC Str Pl to BNC Str Pl LMR-195-UF 50 Ohm 24 In
- 095-850-277-024
- Amphenol RF
-
1:
¥4,334.4
-
20在庫
|
Mouser 部品番号
523-095850277024
|
Amphenol RF
|
RFケーブルアセンブリ BNC Str Pl to BNC Str Pl LMR-195-UF 50 Ohm 24 In
|
|
20在庫
|
|
|
¥4,334.4
|
|
|
¥3,683.2
|
|
|
¥3,200
|
|
|
¥3,104
|
|
|
表示
|
|
|
¥3,019.2
|
|
|
¥2,963.2
|
|
|
¥2,907.2
|
|
最低： 1
複数： 1
|
|
|
BNC
|
Plug (Male)
|
Straight
|
BNC
|
Plug (Male)
|
Straight
|
609.6 mm (24 in)
|
50 Ohms
|
3 GHz
|
LMR-195
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ BNC Str Pl to BNC Str Pl LMR-195-UF 50 Ohm 48 In
- 095-850-277-048
- Amphenol RF
-
1:
¥5,184
-
57在庫
|
Mouser 部品番号
523-095850277048
|
Amphenol RF
|
RFケーブルアセンブリ BNC Str Pl to BNC Str Pl LMR-195-UF 50 Ohm 48 In
|
|
57在庫
|
|
|
¥5,184
|
|
|
¥4,449.6
|
|
|
¥4,257.6
|
|
|
¥4,144
|
|
|
表示
|
|
|
¥3,723.2
|
|
|
¥3,654.4
|
|
|
¥3,592
|
|
最低： 1
複数： 1
|
|
|
BNC
|
Plug (Male)
|
Straight
|
BNC
|
Plug (Male)
|
Straight
|
1.219 m (4 ft)
|
50 Ohms
|
3 GHz
|
LMR-195
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ BNC Straight Bulkhead Jack IP67 to MCX Straight Plug RG-316 50 Ohm 500 mm (19.68 Inches)
- 095-850-304M050
- Amphenol RF
-
1:
¥5,379.2
-
2在庫
|
Mouser 部品番号
523-095850304M050
|
Amphenol RF
|
RFケーブルアセンブリ BNC Straight Bulkhead Jack IP67 to MCX Straight Plug RG-316 50 Ohm 500 mm (19.68 Inches)
|
|
2在庫
|
|
|
¥5,379.2
|
|
|
¥4,720
|
|
|
¥4,264
|
|
|
¥4,121.6
|
|
|
表示
|
|
|
¥3,998.4
|
|
|
¥3,940.8
|
|
最低： 1
複数： 1
|
|
|
BNC
|
Jack (Female)
|
Straight
|
MCX
|
Plug (Male)
|
Straight
|
500.126 mm (19.69 in)
|
50 Ohms
|
6 GHz
|
RG-316
|
Black
|
Bulk
|
|
|
|
RFケーブルアセンブリ RF CableAssemblyMCX StraightPlugtoPlug
- 095-900-545-048
- Amphenol RF
-
1:
¥4,224
-
19在庫
|
Mouser 部品番号
523-095900545048
|
Amphenol RF
|
RFケーブルアセンブリ RF CableAssemblyMCX StraightPlugtoPlug
|
|
19在庫
|
|
|
¥4,224
|
|
|
¥3,590.4
|
|
|
¥3,211.2
|
|
|
¥3,140.8
|
|
|
表示
|
|
|
¥3,075.2
|
|
|
¥3,001.6
|
|
|
¥2,926.4
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
MCX
|
Plug (Male)
|
Straight
|
MCX
|
Plug (Male)
|
Straight
|
1.219 m (4 ft)
|
50 Ohms
|
1 GHz
|
RG-174
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ RF CableAssemblyMMCX StraightPlugtoPlug
- 095-900-548M200
- Amphenol RF
-
1:
¥3,782.4
-
25在庫
|
Mouser 部品番号
523-095900548M200
|
Amphenol RF
|
RFケーブルアセンブリ RF CableAssemblyMMCX StraightPlugtoPlug
|
|
25在庫
|
|
|
¥3,782.4
|
|
|
¥3,214.4
|
|
|
¥2,974.4
|
|
|
¥2,809.6
|
|
|
表示
|
|
|
¥2,763.2
|
|
|
¥2,689.6
|
|
|
¥2,614.4
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
MMCX
|
Plug (Male)
|
Straight
|
MMCX
|
Plug (Male)
|
Straight
|
2 m (6.562 ft)
|
50 Ohms
|
1 GHz
|
RG-174
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ AMC Right Angle Plug to MCX Right Angle Plug 1.13 mm 50 Ohm 50 mm (1.96 Inches)
- 095-900-559-050
- Amphenol RF
-
1:
¥3,222.4
-
25在庫
|
Mouser 部品番号
523-095900559050
|
Amphenol RF
|
RFケーブルアセンブリ AMC Right Angle Plug to MCX Right Angle Plug 1.13 mm 50 Ohm 50 mm (1.96 Inches)
|
|
25在庫
|
|
|
¥3,222.4
|
|
|
¥2,739.2
|
|
|
¥2,534.4
|
|
|
¥2,379.2
|
|
|
表示
|
|
|
¥2,312
|
|
|
¥2,273.6
|
|
|
¥2,236.8
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
MCX
|
Plug (Male)
|
Right Angle
|
AMC
|
Plug (Male)
|
Right Angle
|
50 mm (1.969 in)
|
50 Ohms
|
6 GHz
|
1.13 mm Coax
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Jack RG-174 50 Ohm 18 inches Z Key Code (457 mm)
- 095Z820-159-018
- Amphenol RF
-
1:
¥3,926.4
-
24在庫
|
Mouser 部品番号
523-095Z820159018
|
Amphenol RF
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Jack RG-174 50 Ohm 18 inches Z Key Code (457 mm)
|
|
24在庫
|
|
|
¥3,926.4
|
|
|
¥3,337.6
|
|
|
¥2,985.6
|
|
|
¥2,880
|
|
|
表示
|
|
|
¥2,819.2
|
|
|
¥2,705.6
|
|
|
¥2,635.2
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
FAKRA Gen 3.0
|
Jack (Female)
|
Straight
|
SMA
|
Jack (Female)
|
Straight
|
457.2 mm (18 in)
|
50 Ohms
|
3 GHz
|
RG-174
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Jack RG-174 50 Ohm 36 inches Z Key Code (914 mm)
- 095Z820-159-036
- Amphenol RF
-
1:
¥3,907.2
-
16在庫
|
Mouser 部品番号
523-095Z820159036
|
Amphenol RF
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Jack RG-174 50 Ohm 36 inches Z Key Code (914 mm)
|
|
16在庫
|
|
|
¥3,907.2
|
|
|
¥3,260.8
|
|
|
¥3,033.6
|
|
|
¥2,897.6
|
|
|
表示
|
|
|
¥2,832
|
|
|
¥2,752
|
|
|
¥2,750.4
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
FAKRA Gen 3.0
|
Jack (Female)
|
Straight
|
SMA
|
Jack (Female)
|
Straight
|
914.4 mm (36 in)
|
50 Ohms
|
3 GHz
|
RG-174
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Plug RG-174 50 Ohm 24 inches Z Key Code (610 mm)
- 095Z820-161-024
- Amphenol RF
-
1:
¥3,900.8
-
12在庫
|
Mouser 部品番号
523-095Z820161024
|
Amphenol RF
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Plug RG-174 50 Ohm 24 inches Z Key Code (610 mm)
|
|
12在庫
|
|
|
¥3,900.8
|
|
|
¥3,313.6
|
|
|
¥2,875.2
|
|
|
¥2,824
|
|
|
表示
|
|
|
¥2,776
|
|
|
¥2,668.8
|
|
|
¥2,588.8
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
FAKRA Gen 3.0
|
Jack (Female)
|
Straight
|
SMA
|
Plug (Male)
|
Straight
|
609.6 mm (24 in)
|
50 Ohms
|
3 GHz
|
RG-174
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Jack RG-58 50 Ohm 2 m Z Key Code (78.74 Inches)
- 095Z820-163M200
- Amphenol RF
-
1:
¥6,696
-
9在庫
-
25予想2026/05/05
|
Mouser 部品番号
523-095Z820163M200
|
Amphenol RF
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Jack RG-58 50 Ohm 2 m Z Key Code (78.74 Inches)
|
|
9在庫
25予想2026/05/05
|
|
|
¥6,696
|
|
|
¥5,396.8
|
|
|
¥5,123.2
|
|
|
¥4,980.8
|
|
|
表示
|
|
|
¥4,904
|
|
|
¥4,673.6
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
FAKRA Gen 3.0
|
Jack (Female)
|
Straight
|
SMA
|
Jack (Female)
|
Straight
|
2 m (6.562 ft)
|
50 Ohms
|
3 GHz
|
RG-58
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Plug RG-58 50 Ohm 36 inches Z Key Code (914 mm)
- 095Z820-165-036
- Amphenol RF
-
1:
¥4,656
-
9在庫
|
Mouser 部品番号
523-095Z820165036
|
Amphenol RF
|
RFケーブルアセンブリ FAKRA Straight Jack to SMA Straight Plug RG-58 50 Ohm 36 inches Z Key Code (914 mm)
|
|
9在庫
|
|
|
¥4,656
|
|
|
¥3,897.6
|
|
|
¥3,747.2
|
|
|
¥3,564.8
|
|
|
表示
|
|
|
¥3,377.6
|
|
|
¥3,240
|
|
|
¥3,225.6
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
FAKRA Gen 3.0
|
Jack (Female)
|
Straight
|
SMA
|
Plug (Male)
|
Straight
|
914.4 mm (36 in)
|
50 Ohms
|
3 GHz
|
RG-58
|
|
Bulk
|
|
|
|
RFケーブルアセンブリ FAKRA Straight Plug to SMA Straight Plug RG-58 50 Ohm 18 inches Z Key Code (457 mm)
- 095Z820-166-018
- Amphenol RF
-
1:
¥4,206.4
-
47在庫
|
Mouser 部品番号
523-095Z820166018
|
Amphenol RF
|
RFケーブルアセンブリ FAKRA Straight Plug to SMA Straight Plug RG-58 50 Ohm 18 inches Z Key Code (457 mm)
|
|
47在庫
|
|
|
¥4,206.4
|
|
|
¥3,574.4
|
|
|
¥3,363.2
|
|
|
¥3,067.2
|
|
|
表示
|
|
|
¥3,001.6
|
|
|
¥2,876.8
|
|
|
¥2,800
|
|
|
見積り
|
|
最低： 1
複数： 1
|
|
|
FAKRA Gen 2.0
|
Plug (Male)
|
Straight
|
SMA
|
Plug (Male)
|
Straight
|
457.2 mm (18 in)
|
50 Ohms
|
3 GHz
|
RG-58
|
|
Bulk
|
|
日本