DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 15 Vdc, 0.067 A, dual unregulated output, SMT
+1 图像
DEP1-3-S15-M
CUI Inc.
1:
¥45.9119
38 库存量
80 预期 2026/2/23
新产品
Mouser 零件编号
490-DEP1-3-S15-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 15 Vdc, 0.067 A, dual unregulated output, SMT
38 库存量
80 预期 2026/2/23
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
3.3 VDC
2.97 VDC
3.63 VDC
15 VDC
67 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 3.3 Vdc, 0.303 A, dual unregulated output, SMT
+1 图像
DEP1-3-S3-M
CUI Inc.
1:
¥45.9119
56 库存量
80 预期 2026/4/10
新产品
Mouser 零件编号
490-DEP1-3-S3-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 3.3 Vdc, 0.303 A, dual unregulated output, SMT
56 库存量
80 预期 2026/4/10
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
3.3 VDC
2.97 VDC
3.63 VDC
3.3 VDC
303 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
+1 图像
DEP1-3-S5-M
CUI Inc.
1:
¥45.9119
43 库存量
新产品
Mouser 零件编号
490-DEP1-3-S5-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
43 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
3.3 VDC
2.97 VDC
3.63 VDC
5 VDC
200 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,13.5-16.5 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
+1 图像
DEP1-15-S12-M
CUI Inc.
1:
¥45.9119
67 库存量
新产品
Mouser 零件编号
490-DEP1-15-S12-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,13.5-16.5 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
67 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
15 VDC
13.5 VDC
16.5 VDC
12 VDC
84 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 15 Vdc, 0.067 A, dual unregulated output, SMT
+1 图像
DEP1-12-S15-M
CUI Inc.
1:
¥45.9119
120 库存量
新产品
Mouser 零件编号
490-DEP1-12-S15-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 15 Vdc, 0.067 A, dual unregulated output, SMT
120 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
15 VDC
67 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,21.6-26.4 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
+1 图像
DEP1-24-S12-M
CUI Inc.
1:
¥45.9119
160 库存量
新产品
Mouser 零件编号
490-DEP1-24-S12-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,21.6-26.4 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
160 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
24 VDC
21.6 VDC
26.4 VDC
12 VDC
84 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,21.6-26.4 Vdc input, 15 Vdc, 0.067 A, dual unregulated output, SMT
+1 图像
DEP1-24-S15-M
CUI Inc.
1:
¥45.9119
114 库存量
400 在途量
新产品
Mouser 零件编号
490-DEP1-24-S15-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,21.6-26.4 Vdc input, 15 Vdc, 0.067 A, dual unregulated output, SMT
114 库存量
400 在途量
查看日期
在途量:
160 待发货
120 预期 2026/3/9
120 预期 2026/3/17
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
24 VDC
21.6 VDC
26.4 VDC
15 VDC
67 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 15 Vdc, 0.067 A, dual unregulated output, SMT
+1 图像
DEP1-5-S15-M
CUI Inc.
1:
¥45.9119
149 库存量
160 在途量
新产品
Mouser 零件编号
490-DEP1-5-S15-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 15 Vdc, 0.067 A, dual unregulated output, SMT
149 库存量
160 在途量
查看日期
在途量:
80 预期 2026/3/23
80 预期 2026/4/23
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
5 VDC
4.5 VDC
5.5 VDC
15 VDC
67 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 9 Vdc, 0.112 A, single unregulated output, SMT
+1 图像
DEP1-5-S9-M
CUI Inc.
1:
¥45.9119
298 库存量
新产品
Mouser 零件编号
490-DEP1-5-S9-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 9 Vdc, 0.112 A, single unregulated output, SMT
298 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
5 VDC
4.5 VDC
5.5 VDC
9 VDC
112 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 3.3 Vdc, 0.303 A, dual unregulated output, SMT
+1 图像
DEP1-12-S3-M
CUI Inc.
1:
¥45.9119
240 库存量
新产品
Mouser 零件编号
490-DEP1-12-S3-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 3.3 Vdc, 0.303 A, dual unregulated output, SMT
240 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
3.3 VDC
303 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 9 Vdc, 0.112 A, dual unregulated output, SMT
+1 图像
DEP1-12-S9-M
CUI Inc.
1:
¥45.9119
204 库存量
120 预期 2026/3/19
新产品
Mouser 零件编号
490-DEP1-12-S9-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 9 Vdc, 0.112 A, dual unregulated output, SMT
204 库存量
120 预期 2026/3/19
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
9 VDC
112 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,13.5-16.5 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
+1 图像
DEP1-15-S5-M
CUI Inc.
1:
¥45.9119
80 库存量
新产品
Mouser 零件编号
490-DEP1-15-S5-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,13.5-16.5 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
80 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
15 VDC
13.5 VDC
16.5 VDC
5 VDC
200 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
+1 图像
DEP1-12-S5-M
CUI Inc.
1:
¥45.9119
115 库存量
新产品
Mouser 零件编号
490-DEP1-12-S5-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
115 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
5 VDC
200 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 21.6-26.4 Vdc input, 15 Vdc, 0.034 A, dual unregulated output, SMT
+1 图像
DEP1-24-D15-M
CUI Inc.
1:
¥45.9119
66 库存量
新产品
Mouser 零件编号
490-DEP1-24-D15-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 21.6-26.4 Vdc input, 15 Vdc, 0.034 A, dual unregulated output, SMT
66 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
50
查看
50
¥41.8552
99
¥41.1885
264
¥40.115
528
¥39.6178
购买
最低: 1
倍数: 1
Isolated
2 Output
1 W
24 VDC
21.6 VDC
26.4 VDC
15 VDC
34 mA
- 15 VDC
- 34 mA
3 kVDC
SMD-10
15.24 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 15 Vdc, 0.034 A, dual unregulated output, SMT
+1 图像
DEP1-3-D15-M
CUI Inc.
1:
¥45.9119
58 库存量
新产品
Mouser 零件编号
490-DEP1-3-D15-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 15 Vdc, 0.034 A, dual unregulated output, SMT
58 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
50
查看
50
¥41.8552
99
¥41.1885
264
¥40.115
528
¥39.6178
购买
最低: 1
倍数: 1
Isolated
2 Output
1 W
3.3 VDC
2.97 VDC
3.63 VDC
15 VDC
34 mA
- 15 VDC
- 34 mA
3 kVDC
SMD-10
15.24 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 3.3 Vdc, 0.303 A, dual unregulated output, SMT
+1 图像
DEP1-5-S3-M
CUI Inc.
1:
¥45.9119
160 库存量
80 预期 2026/3/31
新产品
Mouser 零件编号
490-DEP1-5-S3-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 3.3 Vdc, 0.303 A, dual unregulated output, SMT
160 库存量
80 预期 2026/3/31
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
5 VDC
4.5 VDC
5.5 VDC
3.3 VDC
303 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
+1 图像
DEP1-5-S5-M
CUI Inc.
1:
¥45.9119
158 库存量
新产品
Mouser 零件编号
490-DEP1-5-S5-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
158 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
5 VDC
4.5 VDC
5.5 VDC
5 VDC
200 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
+1 图像
DEP1-3-S12-M
CUI Inc.
1:
¥45.9119
119 库存量
新产品
Mouser 零件编号
490-DEP1-3-S12-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 2.97-3.63 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
119 库存量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
3.3 VDC
2.97 VDC
3.63 VDC
12 VDC
84 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,21.6-26.4 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
+1 图像
DEP1-24-S5-M
CUI Inc.
1:
¥45.9119
1 库存量
80 在途量
新产品
Mouser 零件编号
490-DEP1-24-S5-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,21.6-26.4 Vdc input, 5 Vdc, 0.2 A, dual unregulated output, SMT
1 库存量
80 在途量
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
24 VDC
21.6 VDC
26.4 VDC
5 VDC
200 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
+1 图像
DEP1-12-S12-M
CUI Inc.
1:
¥45.9119
266 库存量
160 预期 2026/2/23
新产品
Mouser 零件编号
490-DEP1-12-S12-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W,10.8-13.2 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
266 库存量
160 预期 2026/2/23
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
12 VDC
84 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
+1 图像
DEP1-5-S12-M
CUI Inc.
1:
¥45.9119
120 预期 2026/4/27
新产品
Mouser 零件编号
490-DEP1-5-S12-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 4.5-5.5 Vdc input, 12 Vdc, 0.084 A, dual unregulated output, SMT
120 预期 2026/4/27
1
¥45.9119
5
¥45.0757
10
¥44.4203
25
¥42.601
40
查看
40
¥41.8552
120
¥41.1885
280
¥40.115
520
¥39.6178
购买
最低: 1
倍数: 1
Isolated
1 Output
1 W
5 VDC
4.5 VDC
5.5 VDC
12 VDC
84 mA
3 kVDC
SMD-8
12.75 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 10.8-13.2 Vdc input, 12 Vdc, 0.042 A, dual unregulated output, SMT
+1 图像
DEP1-12-D12-M
CUI Inc.
受限供货情况
新产品
Mouser 零件编号
490-DEP1-12-D12-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 10.8-13.2 Vdc input, 12 Vdc, 0.042 A, dual unregulated output, SMT
Isolated
2 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
12 VDC
42 mA
- 12 VDC
- 42 mA
3 kVDC
SMD-10
15.24 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 10.8-13.2 Vdc input, 12 Vdc, 0.042 A, dual unregulated output, SMT, T&R
+1 图像
DEP1-12-D12-M-TR
CUI Inc.
受限供货情况
新产品
Mouser 零件编号
490-DEP1-12-D12-M-TR
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 10.8-13.2 Vdc input, 12 Vdc, 0.042 A, dual unregulated output, SMT, T&R
Isolated
2 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
12 VDC
42 mA
- 12 VDC
- 42 mA
3 kVDC
SMD-10
15.24 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 10.8-13.2 Vdc input, 15 Vdc, 0.034 A, dual unregulated output, SMT
+1 图像
DEP1-12-D15-M
CUI Inc.
受限供货情况
新产品
Mouser 零件编号
490-DEP1-12-D15-M
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 10.8-13.2 Vdc input, 15 Vdc, 0.034 A, dual unregulated output, SMT
Isolated
2 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
15 VDC
34 mA
- 15 VDC
- 34 mA
3 kVDC
SMD-10
15.24 mm
10.7 mm
7 mm
Industrial
DEP1-M
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 10.8-13.2 Vdc input, 15 Vdc, 0.034 A, dual unregulated output, SMT, T&R
+1 图像
DEP1-12-D15-M-TR
CUI Inc.
受限供货情况
新产品
Mouser 零件编号
490-DEP1-12-D15-M-TR
新产品
CUI Inc.
DC/DC转换器 - SMD型 dc-dc isolated, 1 W, 10.8-13.2 Vdc input, 15 Vdc, 0.034 A, dual unregulated output, SMT, T&R
Isolated
2 Output
1 W
12 VDC
10.8 VDC
13.2 VDC
15 VDC
34 mA
- 15 VDC
- 34 mA
3 kVDC
SMD-10
15.24 mm
10.7 mm
7 mm
Industrial
DEP1-M