Signal Conditioning The MPD-0222FCSP2 is a small footprint MMIC 2-22 GHz 2-Way power divider/power splitter featuring high 24 dB isolation and low 0.6 dB insertion loss in our compact CSP2 chip scale package.
MPD-0222FCSP2
Marki Microwave
1:
$80.75
86 Có hàng
75 Dự kiến 21/08/2026
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD-0222FCSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD-0222FCSP2 is a small footprint MMIC 2-22 GHz 2-Way power divider/power splitter featuring high 24 dB isolation and low 0.6 dB insertion loss in our compact CSP2 chip scale package.
86 Có hàng
75 Dự kiến 21/08/2026
1
$80.75
5
$67.29
10
$57.68
25
$52.44
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
50 Ohms
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD-0422FCSP2 is a small footprint MMIC 4-22 GHz 2-Way power divider/power splitter featuring high 24 dB isolation and low 0.7 dB insertion loss in our compact CSP2 chip scale package.
MPD-0422FCSP2
Marki Microwave
1:
$60.21
64 Có hàng
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD-0422FCSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD-0422FCSP2 is a small footprint MMIC 4-22 GHz 2-Way power divider/power splitter featuring high 24 dB isolation and low 0.7 dB insertion loss in our compact CSP2 chip scale package.
64 Có hàng
1
$60.21
5
$50.17
10
$43.01
25
$39.10
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
50 Ohms
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD-0422SCSP2 is a small footprint MMIC 4-22 GHz 2-Way power divider/power splitter featuring high 22 dB isolation and low 0.9 dB insertion loss in our compact CSP2 chip scale package.
MPD-0422SCSP2
Marki Microwave
1:
$60.21
159 Có hàng
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD-0422SCSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD-0422SCSP2 is a small footprint MMIC 4-22 GHz 2-Way power divider/power splitter featuring high 22 dB isolation and low 0.9 dB insertion loss in our compact CSP2 chip scale package.
159 Có hàng
1
$60.21
5
$50.17
10
$43.01
25
$39.10
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
50 Ohms
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD4-0422CSP2 is a small footprint MMIC 4-22 GHz 4-Way power divider/power splitter featuring high 30 dB isolation and low 1 dB insertion loss in our compact CSP2 chip scale package.
MPD4-0422CSP2
Marki Microwave
1:
$111.40
141 Có hàng
50 Dự kiến 26/08/2026
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD4-0422CSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD4-0422CSP2 is a small footprint MMIC 4-22 GHz 4-Way power divider/power splitter featuring high 30 dB isolation and low 1 dB insertion loss in our compact CSP2 chip scale package.
141 Có hàng
50 Dự kiến 26/08/2026
1
$111.40
5
$92.83
10
$79.57
25
$72.33
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD-1260SCSP2 is a small footprint MMIC 12-60 GHz 2-Way power divider/power splitter featuring high 24 dB isolation and low 0.6 dB insertion loss in our compact CSP2 chip scale package.
MPD-1260SCSP2
Marki Microwave
1:
$89.56
29 Có hàng
25 Dự kiến 06/10/2026
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD-1260SCSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD-1260SCSP2 is a small footprint MMIC 12-60 GHz 2-Way power divider/power splitter featuring high 24 dB isolation and low 0.6 dB insertion loss in our compact CSP2 chip scale package.
29 Có hàng
25 Dự kiến 06/10/2026
1
$89.56
5
$74.63
10
$63.97
25
$58.16
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD-1260FCSP2 is a small footprint MMIC 12-60 GHz 2-Way power divider/power splitter featuring high 22 dB isolation and low 0.3 dB insertion loss in our compact CSP2 chip scale package.
MPD-1260FCSP2
Marki Microwave
1:
$89.56
28 Có hàng
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD-1260FCSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD-1260FCSP2 is a small footprint MMIC 12-60 GHz 2-Way power divider/power splitter featuring high 22 dB isolation and low 0.3 dB insertion loss in our compact CSP2 chip scale package.
28 Có hàng
1
$89.56
5
$74.63
10
$63.97
25
$58.16
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD4-0R404CSP2 is a small footprint MMIC 0.4-4 GHz 4-Way power divider/power splitter featuring high 20 dB isolation and 3.4 dB insertion loss in our compact CSP2 chip scale package.
MPD4-0R404CSP2
Marki Microwave
1:
$78.63
23 Có hàng
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD4-0R404CSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD4-0R404CSP2 is a small footprint MMIC 0.4-4 GHz 4-Way power divider/power splitter featuring high 20 dB isolation and 3.4 dB insertion loss in our compact CSP2 chip scale package.
23 Có hàng
1
$78.63
5
$65.52
10
$56.16
25
$51.06
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD-0R402SCSP2 is a small footprint MMIC 0.4-2.5 GHz 2-Way power divider/power splitter featuring high 20 dB isolation and low 1 dB insertion loss in our compact CSP2 chip scale package.
MPD-0R402SCSP2
Marki Microwave
1:
$42.50
12 Có hàng
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD-0R402SCSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD-0R402SCSP2 is a small footprint MMIC 0.4-2.5 GHz 2-Way power divider/power splitter featuring high 20 dB isolation and low 1 dB insertion loss in our compact CSP2 chip scale package.
12 Có hàng
1
$42.50
5
$35.42
10
$30.36
25
$27.59
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
50 Ohms
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD4-0108CSP2 is a small footprint MMIC 1-8 GHz 4-Way power divider/power splitter featuring high 30 dB isolation and low 2.6 dB insertion loss in our compact CSP2 chip scale package.
MPD4-0108CSP2
Marki Microwave
1:
$78.63
17 Có hàng
50 Đang đặt hàng
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD4-0108CSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD4-0108CSP2 is a small footprint MMIC 1-8 GHz 4-Way power divider/power splitter featuring high 30 dB isolation and low 2.6 dB insertion loss in our compact CSP2 chip scale package.
17 Có hàng
50 Đang đặt hàng
Xem ngày
Đang đặt hàng:
25 Dự kiến 11/09/2026
25 Dự kiến 18/09/2026
Thời gian sản xuất của nhà máy:
11 Tuần
1
$78.63
5
$65.52
10
$56.16
25
$51.06
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD-0108FCSP2 is a small footprint MMIC 1-8 GHz 2-Way power divider/power splitter featuring high 23 dB isolation and low 0.8 dB insertion loss in our compact CSP2 chip scale package.
MPD-0108FCSP2
Marki Microwave
1:
$42.50
31 Có hàng
25 Dự kiến 13/08/2026
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD-0108FCSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD-0108FCSP2 is a small footprint MMIC 1-8 GHz 2-Way power divider/power splitter featuring high 23 dB isolation and low 0.8 dB insertion loss in our compact CSP2 chip scale package.
31 Có hàng
25 Dự kiến 13/08/2026
1
$42.50
5
$35.42
10
$30.36
25
$27.59
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
50 Ohms
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MPD-0108SCSP2 is a small footprint MMIC 1-8 GHz 2-Way power divider/power splitter featuring high 23 dB isolation and low 0.9 dB insertion loss in our compact CSP2 chip scale package.
MPD-0108SCSP2
Marki Microwave
1:
$42.50
13 Có hàng
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MPD-0108SCSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MPD-0108SCSP2 is a small footprint MMIC 1-8 GHz 2-Way power divider/power splitter featuring high 23 dB isolation and low 0.9 dB insertion loss in our compact CSP2 chip scale package.
13 Có hàng
1
$42.50
5
$35.42
10
$30.36
25
$27.59
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Dividers / Power Splitters
50 Ohms
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The HLM-8011 is a high-power GaAs Schottky diode signal limiter featuring high IP3 and high power handling. It offers low insertion loss and low return loss from DC through Ka band and has a typical 1dB compression point of +9dBm.
HLM-8011U
Marki Microwave
1:
$2,375.69
2 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-HLM-8011U
Mới tại Mouser
Marki Microwave
Signal Conditioning The HLM-8011 is a high-power GaAs Schottky diode signal limiter featuring high IP3 and high power handling. It offers low insertion loss and low return loss from DC through Ka band and has a typical 1dB compression point of +9dBm.
2 Có hàng
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
0 Hz to 30 GHz
0 Hz to 30 GHz
Connector
- 55 C
+ 100 C
Signal Conditioning The MBAL-0220CSP2 is a GaAs passive MMIC balun featuring a frequency range of 2 to 20 GHz. This balun offers low 1.9 dB insertion loss as a mode converter, excellent balance and 27 dB common mode rejection in a compact 2.5 mm CSP2 chip scale package.
MBAL-0220CSP2
Marki Microwave
1:
$191.75
11 Có hàng
50 Đang đặt hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-MBAL-0220CSP2
Mới tại Mouser
Marki Microwave
Signal Conditioning The MBAL-0220CSP2 is a GaAs passive MMIC balun featuring a frequency range of 2 to 20 GHz. This balun offers low 1.9 dB insertion loss as a mode converter, excellent balance and 27 dB common mode rejection in a compact 2.5 mm CSP2 chip scale package.
11 Có hàng
50 Đang đặt hàng
Xem ngày
Đang đặt hàng:
25 Dự kiến 06/10/2026
25 Dự kiến 08/10/2026
Thời gian sản xuất của nhà máy:
10 Tuần
1
$191.75
5
$159.80
10
$136.96
25
$124.51
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Baluns
2 GHz to 20 GHz
2 GHz to 20 GHz
50 Ohms
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MBAL-0R106CSP2 is a GaAs passive MMIC 1:2 balun that features excellent 33 dB common mode rejection over a 0.1 to 6 GHz operational bandwidth. It is footprint compatible with the 1:1 MBALH-0R106CSP2, offering flexibility in system design.
MBAL-0R106CSP2
Marki Microwave
1:
$141.90
8 Có hàng
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MBAL-0R106CSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MBAL-0R106CSP2 is a GaAs passive MMIC 1:2 balun that features excellent 33 dB common mode rejection over a 0.1 to 6 GHz operational bandwidth. It is footprint compatible with the 1:1 MBALH-0R106CSP2, offering flexibility in system design.
8 Có hàng
1
$141.90
5
$118.25
10
$101.36
25
$92.14
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Baluns
100 MHz to 6 GHz
100 MHz to 6 GHz
50 Ohms
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning The MBALH-0R520CSP2 is a GaAs passive MMIC 1:1 balun that features excellent 32 dB common mode rejection over a 0.5 to 20 GHz operational bandwidth. It is footprint compatible with the 1:2 MBAL-0R520CSP2, offering flexibility in system design.
MBALH-0R520CSP2
Marki Microwave
1:
$218.13
1 Có hàng
50 Dự kiến 11/12/2026
Sản phẩm Mới
Mã Phụ tùng của Mouser
10-MBALH-0R520CSP2
Sản phẩm Mới
Marki Microwave
Signal Conditioning The MBALH-0R520CSP2 is a GaAs passive MMIC 1:1 balun that features excellent 32 dB common mode rejection over a 0.5 to 20 GHz operational bandwidth. It is footprint compatible with the 1:2 MBAL-0R520CSP2, offering flexibility in system design.
1 Có hàng
50 Dự kiến 11/12/2026
1
$218.13
5
$181.77
10
$155.81
25
$141.64
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Baluns
500 MHz to 20 GHz
500 MHz to 20 GHz
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning A broadband surface mount balun, hand-tuned for optimal phase and amplitude balance over a 10 MHz to 12 GHz bandwidth.
BALH-0012SSG
Marki Microwave
1:
$385.35
26 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-BALH-0012SSG
Mới tại Mouser
Marki Microwave
Signal Conditioning A broadband surface mount balun, hand-tuned for optimal phase and amplitude balance over a 10 MHz to 12 GHz bandwidth.
26 Có hàng
1
$385.35
5
$296.42
10
$250.23
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Baluns
10 MHz to 12 GHz
10 MHz to 12 GHz
SMD/SMT
- 55 C
+ 100 dB
Signal Conditioning The ADA-2052 can be used as a frequency extender to enhance the frequency range of a <26 GHz synthesizer up to 52 GHz. Useful for lab testing, test and measurement, and prototype systems.
ADA-2052
Marki Microwave
1:
$1,954.63
1 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-ADA-2052
Mới tại Mouser
Marki Microwave
Signal Conditioning The ADA-2052 can be used as a frequency extender to enhance the frequency range of a <26 GHz synthesizer up to 52 GHz. Useful for lab testing, test and measurement, and prototype systems.
1 Có hàng
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
10.5 GHz to 26 GHz
10.5 GHz to 26 GHz
5 VDC
50 Ohms
Connector
- 55 C
+ 85 C
Signal Conditioning The HLM-40PSM is a high-power GaAs Schottky diode signal limiter featuring high IP3 over a broad DC-40GHz bandwidth. It offers low insertion loss and excellent return loss from DC through Ka band and has a typical 1 dB compression point of 14 dBm.
HLM-40PSM
Marki Microwave
1:
$94.89
27 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-HLM-40PSM
Mới tại Mouser
Marki Microwave
Signal Conditioning The HLM-40PSM is a high-power GaAs Schottky diode signal limiter featuring high IP3 over a broad DC-40GHz bandwidth. It offers low insertion loss and excellent return loss from DC through Ka band and has a typical 1 dB compression point of 14 dBm.
27 Có hàng
1
$94.89
5
$77.63
10
$65.70
25
$58.99
100
$55.45
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
0 Hz to 40 GHz
0 Hz to 40 GHz
SMD/SMT
- 55 C
+ 100 C
Signal Conditioning MM1-0212L is a low power GaAs MMIC double balanced mixer that operates at LO powers as a low as +1 dBm. MM1-0212L is a low frequency, low power S band mixer that works well as both an up and down converter to through X band.
MM1-0212LS
Marki Microwave
1:
$596.20
3 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-MM1-0212LS
Mới tại Mouser
Marki Microwave
Signal Conditioning MM1-0212L is a low power GaAs MMIC double balanced mixer that operates at LO powers as a low as +1 dBm. MM1-0212L is a low frequency, low power S band mixer that works well as both an up and down converter to through X band.
3 Có hàng
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Mixers
0 Hz to 3 GHz, 2 GHz to 12 GHz
0 Hz to 3 GHz, 2 GHz to 12 GHz
50 Ohms
Connector
- 55 C
+ 100 C
Signal Conditioning The PBR-0003 is a 300 kHz to 3 GHz high isolation power combiner. This power combiner features a unique hand tuned construction based on a bridge coupler that enables 45 dB typical isolation across the operational bandwidth.
PBR-0003
Marki Microwave
1:
$900.67
2 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-PBR-0003
Mới tại Mouser
Marki Microwave
Signal Conditioning The PBR-0003 is a 300 kHz to 3 GHz high isolation power combiner. This power combiner features a unique hand tuned construction based on a bridge coupler that enables 45 dB typical isolation across the operational bandwidth.
2 Có hàng
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Power Combiners
Connector
Signal Conditioning The BTM-0026PSM-2 is a packaged miniature bias tee featuring excellent 0.4 dB insertion loss and superior 25 dB isolations over a broad 10 MHz to 26 GHz bandwidth. The BTM-0026PSM-2 works well for K-Band applications.
BTM-0026PSM-2
Marki Microwave
1:
$60.76
25 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-BTM-0026PSM-2
Mới tại Mouser
Marki Microwave
Signal Conditioning The BTM-0026PSM-2 is a packaged miniature bias tee featuring excellent 0.4 dB insertion loss and superior 25 dB isolations over a broad 10 MHz to 26 GHz bandwidth. The BTM-0026PSM-2 works well for K-Band applications.
25 Có hàng
1
$60.76
5
$50.63
10
$43.39
25
$39.45
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
10 MHz to 26 GHz
10 MHz to 26 GHz
16 V
SMD/SMT
- 55 C
+ 100 dB
Signal Conditioning A broadband MMIC LO buffer amplifier that efficiently provides high gain and output power over a 20-55 GHz frequency band. It is designed to provide a strong, flat output power response when driven with an input power at 0 dBm.
AMM-6702UC
Marki Microwave
1:
$1,433.91
2 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-AMM-6702UC
Mới tại Mouser
Marki Microwave
Signal Conditioning A broadband MMIC LO buffer amplifier that efficiently provides high gain and output power over a 20-55 GHz frequency band. It is designed to provide a strong, flat output power response when driven with an input power at 0 dBm.
2 Có hàng
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
20 GHz to 55 GHz
20 GHz to 55 GHz
Connector
- 40 C
+ 85 C
Signal Conditioning A high power type N-connectorized bidirectional coupler capable of operation to 18 GHz. This coupler features a unique air-line construction that simultaneously enables extremely low loss and high directivity.
CA-18
Marki Microwave
1:
$1,486.73
3 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-CA-18
Mới tại Mouser
Marki Microwave
Signal Conditioning A high power type N-connectorized bidirectional coupler capable of operation to 18 GHz. This coupler features a unique air-line construction that simultaneously enables extremely low loss and high directivity.
3 Có hàng
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Couplers
50 Ohms
Connector
- 40 C
+ 100 C
Signal Conditioning MM1-0222L is a GaAs MMIC double balanced mixer that features excellent conversion loss, superior isolations, and spurious performance across a broad bandwidth. The MM1 0222L works well as both an up and down converter through the Ku band and beyond.
MM1-0222LS
Marki Microwave
1:
$898.07
6 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-MM1-0222LS
Mới tại Mouser
Marki Microwave
Signal Conditioning MM1-0222L is a GaAs MMIC double balanced mixer that features excellent conversion loss, superior isolations, and spurious performance across a broad bandwidth. The MM1 0222L works well as both an up and down converter through the Ku band and beyond.
6 Có hàng
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
Mixers
0 Hz to 3.5 GHz, 2 GHz to 22 GHz
0 Hz to 3.5 GHz, 2 GHz to 22 GHz
50 Ohms
Connector
- 55 C
+ 100 C
Signal Conditioning The BT-0010SMG is a packaged bias tee featuring excellent insertion loss and superior isolations over a broad 20 MHz to 10 GHz bandwidth.
BT-0010SMG-2
Marki Microwave
1:
$203.77
10 Có hàng
Mới tại Mouser
Mã Phụ tùng của Mouser
10-BT-0010SMG-2
Mới tại Mouser
Marki Microwave
Signal Conditioning The BT-0010SMG is a packaged bias tee featuring excellent insertion loss and superior isolations over a broad 20 MHz to 10 GHz bandwidth.
10 Có hàng
1
$203.77
5
$156.75
10
$132.32
Mua
Tối thiểu: 1
Nhiều: 1
Các chi tiết
Signal Conditioning
20 MHz to 10 GHz
20 MHz to 10 GHz
50 Ohms
SMD/SMT
- 65 C
+ 125 C