|
|
HF-Detektor Crest Factor Detector 800MHz-3.8GHz
- ADL5502ACBZ-P7
- Analog Devices
-
1:
17.21 CHF
-
992Auf Lager
|
Mouser-Teilenr.
584-ADL5502ACBZ-P7
|
Analog Devices
|
HF-Detektor Crest Factor Detector 800MHz-3.8GHz
|
|
992Auf Lager
|
|
|
17.21 CHF
|
|
|
13.90 CHF
|
|
|
13.33 CHF
|
|
|
11.74 CHF
|
|
|
Anzeigen
|
|
|
11.16 CHF
|
|
|
10.70 CHF
|
|
|
9.83 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
|
6 GHz
|
|
|
2.5 V to 3.3 V
|
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
WLCSP-8
|
|
Cut Tape
|
|
|
|
HF-Detektor Dual Channel Log Detector
- ADL5519ACPZ-R7
- Analog Devices
-
1:
12.39 CHF
-
1 062Auf Lager
-
1 500Auf Bestellung
|
Mouser-Teilenr.
584-ADL5519ACPZ-R7
|
Analog Devices
|
HF-Detektor Dual Channel Log Detector
|
|
1 062Auf Lager
1 500Auf Bestellung
|
|
|
12.39 CHF
|
|
|
10.79 CHF
|
|
|
10.22 CHF
|
|
|
9.46 CHF
|
|
|
Anzeigen
|
|
|
8.19 CHF
|
|
|
9.00 CHF
|
|
|
8.68 CHF
|
|
|
8.36 CHF
|
|
|
8.19 CHF
|
|
Min.: 1
Mult.: 1
:
1 500
|
|
|
Logarithmic Detector/Controller
|
1 MHz to 10 GHz
|
62 dB
|
Single
|
3.3 V to 5.5 V
|
|
Si
|
+ 125 C
|
- 40 C
|
SMD/SMT
|
LFCSP-32
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor RMS TruPwr Detectors
- ADL5904ACPZN-R7
- Analog Devices
-
1:
6.18 CHF
-
1 107Auf Lager
|
Mouser-Teilenr.
584-ADL5904ACPZN-R7
|
Analog Devices
|
HF-Detektor RMS TruPwr Detectors
|
|
1 107Auf Lager
|
|
|
6.18 CHF
|
|
|
4.78 CHF
|
|
|
4.43 CHF
|
|
|
4.06 CHF
|
|
|
3.62 CHF
|
|
|
3.61 CHF
|
|
Min.: 1
Mult.: 1
:
1 500
|
|
|
RF Power Detector
|
0 Hz to 6 GHz
|
45 dB
|
Single
|
3.3 V
|
100 pF
|
Si
|
+ 105 C
|
- 40 C
|
SMD/SMT
|
LFCSP-16
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor RMS TruPwr Detectors
- ADL5910ACPZN-R7
- Analog Devices
-
1:
5.51 CHF
-
1 972Auf Lager
-
1 500Auf Bestellung
|
Mouser-Teilenr.
584-ADL5910ACPZN-R7
|
Analog Devices
|
HF-Detektor RMS TruPwr Detectors
|
|
1 972Auf Lager
1 500Auf Bestellung
|
|
|
5.51 CHF
|
|
|
4.25 CHF
|
|
|
3.93 CHF
|
|
|
3.58 CHF
|
|
|
Anzeigen
|
|
|
3.17 CHF
|
|
|
3.57 CHF
|
|
|
3.19 CHF
|
|
|
3.17 CHF
|
|
Min.: 1
Mult.: 1
:
1 500
|
|
|
Detector/Trigger
|
0 Hz to 6 GHz
|
37 dB
|
Single
|
3.3 V
|
|
Si
|
+ 105 C
|
- 40 C
|
SMD/SMT
|
LFCSP-16
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor Microwave Detector
- ADL6010SCPZN
- Analog Devices
-
1:
223.88 CHF
-
67Auf Lager
|
Mouser-Teilenr.
584-ADL6010SCPZN
|
Analog Devices
|
HF-Detektor Microwave Detector
|
|
67Auf Lager
|
|
|
223.88 CHF
|
|
|
196.54 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
Envelope Detector
|
500 MHz to 43.5 GHz
|
45 dB
|
Single
|
5 V
|
10 pF
|
Si
|
+ 125 C
|
- 55 C
|
SMD/SMT
|
LFCSP-6
|
|
Cut Tape
|
|
|
|
HF-Detektor Microwave Detector
- ADL6010SCPZN-R2
- Analog Devices
-
1:
209.50 CHF
-
76Auf Lager
|
Mouser-Teilenr.
584-ADL6010SCPZN-R2
|
Analog Devices
|
HF-Detektor Microwave Detector
|
|
76Auf Lager
|
|
|
209.50 CHF
|
|
|
183.25 CHF
|
|
|
160.48 CHF
|
|
|
160.48 CHF
|
|
Min.: 1
Mult.: 1
:
250
|
|
|
Envelope Detector
|
500 MHz to 43.5 GHz
|
45 dB
|
|
5 V
|
10 pF
|
Si
|
+ 125 C
|
- 55 C
|
SMD/SMT
|
LFCSP-6
|
|
Reel, Cut Tape
|
|
|
|
HF-Detektor 40GHz Frequency
- ADL6012ACPZN
- Analog Devices
-
1:
86.38 CHF
-
52Auf Lager
-
51Auf Bestellung
|
Mouser-Teilenr.
584-ADL6012ACPZN
|
Analog Devices
|
HF-Detektor 40GHz Frequency
|
|
52Auf Lager
51Auf Bestellung
|
|
|
86.38 CHF
|
|
|
76.06 CHF
|
|
|
72.48 CHF
|
|
|
67.58 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
Envelope Detector
|
2 GHz to 67 GHz
|
|
Single
|
3.15 V to 5.25 V
|
|
Si
|
+ 125 C
|
- 55 C
|
SMD/SMT
|
LFCSP-10
|
|
Cut Tape
|
|
|
|
HF-Detektor 300MHz to 7GHz RF Pwr Detector w/ Bufed
- LTC5508ESC6#TRMPBF
- Analog Devices
-
1:
4.64 CHF
-
772Auf Lager
|
Mouser-Teilenr.
584-C5508ESC6TRMPBF
|
Analog Devices
|
HF-Detektor 300MHz to 7GHz RF Pwr Detector w/ Bufed
|
|
772Auf Lager
|
|
|
4.64 CHF
|
|
|
3.56 CHF
|
|
|
3.28 CHF
|
|
|
2.98 CHF
|
|
|
2.75 CHF
|
|
|
Anzeigen
|
|
|
2.96 CHF
|
|
|
2.64 CHF
|
|
|
2.60 CHF
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
RF Power Detector
|
300 MHz to 7 GHz
|
44 dB
|
Single
|
2.7 V to 6 V
|
33 pF
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SC-70-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor MS pow Det , w/ Peak Hold, DC - 3.9 GHz
- HMC1120LP4ETR
- Analog Devices
-
1:
16.87 CHF
-
182Auf Lager
|
Mouser-Teilenr.
584-HMC1120LP4ETR
|
Analog Devices
|
HF-Detektor MS pow Det , w/ Peak Hold, DC - 3.9 GHz
|
|
182Auf Lager
|
|
|
16.87 CHF
|
|
|
13.49 CHF
|
|
|
12.64 CHF
|
|
|
12.24 CHF
|
|
|
10.99 CHF
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
RMS Power Detector
|
0 Hz to 3.9 GHz
|
70 dB
|
Single
|
3.3 V
|
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
QFN-24
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor Log Detector, 8-30 GHz
- HMC662LP3E
- Analog Devices
-
1:
954.45 CHF
-
2Auf Lager
|
Mouser-Teilenr.
584-HMC662LP3E
|
Analog Devices
|
HF-Detektor Log Detector, 8-30 GHz
|
|
2Auf Lager
|
|
|
954.45 CHF
|
|
|
901.58 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
Logarithmic Detector
|
8 GHz to 30 GHz
|
54 dB
|
Single
|
3.3 V
|
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
QFN-16
|
|
Cut Tape
|
|
|
|
HF-Detektor 50MHz to 3GHz RF Pwr Detector w/ 60dB Dy
- LT5534ESC6#TRMPBF
- Analog Devices
-
1:
12.54 CHF
-
487Auf Lager
-
1 000Auf Bestellung
|
Mouser-Teilenr.
584-LT5534ESC6TRMPBF
|
Analog Devices
|
HF-Detektor 50MHz to 3GHz RF Pwr Detector w/ 60dB Dy
|
|
487Auf Lager
1 000Auf Bestellung
|
|
|
12.54 CHF
|
|
|
9.93 CHF
|
|
|
9.28 CHF
|
|
|
8.84 CHF
|
|
|
8.67 CHF
|
|
|
7.84 CHF
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
RF Power Detector
|
50 MHz to 3 GHz
|
60 dB
|
Single
|
2.7 V to 5.25 V
|
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SC-70-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor Wide Dynamic Rng RF/IF Log Detector
- LT5537EDDB#TRPBF
- Analog Devices
-
1:
7.95 CHF
-
1 604Auf Lager
-
2 500Auf Bestellung
|
Mouser-Teilenr.
584-LT5537EDDB#TRPBF
|
Analog Devices
|
HF-Detektor Wide Dynamic Rng RF/IF Log Detector
|
|
1 604Auf Lager
2 500Auf Bestellung
|
|
|
7.95 CHF
|
|
|
6.21 CHF
|
|
|
5.77 CHF
|
|
|
5.28 CHF
|
|
|
Anzeigen
|
|
|
4.67 CHF
|
|
|
5.06 CHF
|
|
|
4.92 CHF
|
|
|
4.90 CHF
|
|
|
4.67 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
RF/IF Detector
|
10 MHz to 1 GHz
|
83 dB
|
Single
|
2.7 V to 5.25 V
|
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
DFN-8
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor 40MHz to 3.8GHz RF Pwr Detector w/ 75dB
- LT5538IDD#PBF
- Analog Devices
-
1:
11.43 CHF
-
589Auf Lager
|
Mouser-Teilenr.
584-LT5538IDD#PBF
|
Analog Devices
|
HF-Detektor 40MHz to 3.8GHz RF Pwr Detector w/ 75dB
|
|
589Auf Lager
|
|
|
11.43 CHF
|
|
|
9.02 CHF
|
|
|
8.42 CHF
|
|
|
7.69 CHF
|
|
|
Anzeigen
|
|
|
7.33 CHF
|
|
|
7.21 CHF
|
|
|
7.07 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
RF Power Detector
|
40 MHz to 3.8 GHz
|
75 dB
|
Single
|
3 V to 5.25 V
|
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
DFN-8
|
|
Tube
|
|
|
|
HF-Detektor 6GHz RMS Pwr Detector w/ 40dB Dynamic Rn
- LT5581IDDB#TRPBF
- Analog Devices
-
1:
6.25 CHF
-
2 239Auf Lager
|
Mouser-Teilenr.
584-LT5581IDDB#TRPBF
|
Analog Devices
|
HF-Detektor 6GHz RMS Pwr Detector w/ 40dB Dynamic Rn
|
|
2 239Auf Lager
|
|
|
6.25 CHF
|
|
|
4.83 CHF
|
|
|
4.48 CHF
|
|
|
4.11 CHF
|
|
|
3.92 CHF
|
|
|
3.60 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
RMS Power Detector
|
10 MHz to 6 GHz
|
40 dB
|
Single
|
3.3 V
|
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
DFN-8
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor 100kHz to 1GHz RF Pwr Detector
- LTC5507ES6#TRPBF
- Analog Devices
-
1:
4.64 CHF
-
4 109Auf Lager
|
Mouser-Teilenr.
584-LTC5507ES6#TRPBF
|
Analog Devices
|
HF-Detektor 100kHz to 1GHz RF Pwr Detector
|
|
4 109Auf Lager
|
|
|
4.64 CHF
|
|
|
3.56 CHF
|
|
|
3.28 CHF
|
|
|
2.98 CHF
|
|
|
Anzeigen
|
|
|
2.60 CHF
|
|
|
2.84 CHF
|
|
|
2.75 CHF
|
|
|
2.70 CHF
|
|
|
2.60 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
RF Power Detector
|
100 kHz to 1 GHz
|
48 dB
|
Single
|
2.7 V to 6 V
|
33 pF
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor 100kHz to 1GHz RF Pwr Detector
- LTC5507ES6#TRMPBF
- Analog Devices
-
1:
4.64 CHF
-
2 604Auf Lager
-
8 000Auf Bestellung
|
Mouser-Teilenr.
584-LTC5507ES6TRMPBF
|
Analog Devices
|
HF-Detektor 100kHz to 1GHz RF Pwr Detector
|
|
2 604Auf Lager
8 000Auf Bestellung
|
|
|
4.64 CHF
|
|
|
3.56 CHF
|
|
|
3.28 CHF
|
|
|
2.98 CHF
|
|
|
2.75 CHF
|
|
|
Anzeigen
|
|
|
2.96 CHF
|
|
|
2.64 CHF
|
|
|
2.60 CHF
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
RF Power Detector
|
100 kHz to 1 GHz
|
48 dB
|
Single
|
2.7 V to 6 V
|
33 pF
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor 300MHz to 7GHz RF Pwr Detector w/ Bufed
- LTC5508ESC6#TRPBF
- Analog Devices
-
1:
6.44 CHF
-
708Auf Lager
|
Mouser-Teilenr.
584-LTC5508ESC6TRPBF
|
Analog Devices
|
HF-Detektor 300MHz to 7GHz RF Pwr Detector w/ Bufed
|
|
708Auf Lager
|
|
|
6.44 CHF
|
|
|
4.73 CHF
|
|
|
4.41 CHF
|
|
|
3.88 CHF
|
|
|
Anzeigen
|
|
|
2.60 CHF
|
|
|
3.67 CHF
|
|
|
3.30 CHF
|
|
|
2.79 CHF
|
|
|
2.60 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
RF Power Detector
|
300 MHz to 7 GHz
|
44 dB
|
Single
|
2.7 V to 6 V
|
33 pF
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SC-70-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor Prec 300MHz to 7GHz HF-Detektor w/ SD &
- LTC5530ES6#TRMPBF
- Analog Devices
-
1:
4.24 CHF
-
599Auf Lager
|
Mouser-Teilenr.
584-LTC5530ES6TRMPBF
|
Analog Devices
|
HF-Detektor Prec 300MHz to 7GHz HF-Detektor w/ SD &
|
|
599Auf Lager
|
|
|
4.24 CHF
|
|
|
3.23 CHF
|
|
|
2.98 CHF
|
|
|
2.70 CHF
|
|
|
2.49 CHF
|
|
|
Anzeigen
|
|
|
2.67 CHF
|
|
|
2.39 CHF
|
|
|
2.36 CHF
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
RF Power Detector
|
300 MHz to 7 GHz
|
42 dB
|
Single
|
2.7 V to 6 V
|
33 pF
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor Prec 300MHz to 7GHz HF-Detektor w/ SD &
- LTC5531ES6#TRMPBF
- Analog Devices
-
1:
5.60 CHF
-
671Auf Lager
|
Mouser-Teilenr.
584-LTC5531ES6TRMPBF
|
Analog Devices
|
HF-Detektor Prec 300MHz to 7GHz HF-Detektor w/ SD &
|
|
671Auf Lager
|
|
|
5.60 CHF
|
|
|
4.12 CHF
|
|
|
3.83 CHF
|
|
|
3.37 CHF
|
|
|
2.86 CHF
|
|
|
Anzeigen
|
|
|
3.20 CHF
|
|
|
2.30 CHF
|
|
|
2.25 CHF
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
RF Power Detector
|
300 MHz to 7 GHz
|
42 dB
|
Single
|
2.7 V to 6 V
|
33 pF
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor Prec 300MHz to 7GHz HF-Detektor w/ Gain
- LTC5532ES6#TRPBF
- Analog Devices
-
1:
4.79 CHF
-
2 350Auf Lager
-
2 476Auf Bestellung
|
Mouser-Teilenr.
584-LTC5532ES6#TRPBF
|
Analog Devices
|
HF-Detektor Prec 300MHz to 7GHz HF-Detektor w/ Gain
|
|
2 350Auf Lager
2 476Auf Bestellung
|
|
|
4.79 CHF
|
|
|
3.67 CHF
|
|
|
3.40 CHF
|
|
|
3.10 CHF
|
|
|
Anzeigen
|
|
|
2.69 CHF
|
|
|
3.06 CHF
|
|
|
2.97 CHF
|
|
|
2.69 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
RF Power Detector
|
|
|
|
|
|
Si
|
|
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor Prec 300MHz to 7GHz HF-Detektor w/ Gain
- LTC5532ES6#TRMPBF
- Analog Devices
-
1:
4.79 CHF
-
546Auf Lager
-
481Auf Bestellung
|
Mouser-Teilenr.
584-LTC5532ES6TRMPBF
|
Analog Devices
|
HF-Detektor Prec 300MHz to 7GHz HF-Detektor w/ Gain
|
|
546Auf Lager
481Auf Bestellung
|
|
|
4.79 CHF
|
|
|
3.67 CHF
|
|
|
3.40 CHF
|
|
|
3.10 CHF
|
|
|
2.85 CHF
|
|
|
Anzeigen
|
|
|
3.06 CHF
|
|
|
2.74 CHF
|
|
|
2.69 CHF
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
RF Power Detector
|
300 MHz to 7 GHz
|
42 dB
|
Single
|
2.7 V to 6 V
|
33 pF
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor Prec 600MHz to 7GHz, HF-Detektor w/ Adj
- LTC5535ES6#TRMPBF
- Analog Devices
-
1:
4.90 CHF
-
1 287Auf Lager
|
Mouser-Teilenr.
584-LTC5535ES6TRMPBF
|
Analog Devices
|
HF-Detektor Prec 600MHz to 7GHz, HF-Detektor w/ Adj
|
|
1 287Auf Lager
|
|
|
4.90 CHF
|
|
|
3.76 CHF
|
|
|
3.48 CHF
|
|
|
3.17 CHF
|
|
|
3.14 CHF
|
|
|
Anzeigen
|
|
|
3.15 CHF
|
|
|
2.91 CHF
|
|
|
2.76 CHF
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
RF Power Detector
|
600 MHz to 7 GHz
|
42 dB
|
Single
|
2.7 V to 5.5 V
|
33 pF
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor 600MHz to 7GHz Prec HF-Detektor w/ Fast
- LTC5536ES6#TRPBF
- Analog Devices
-
1:
6.79 CHF
-
467Auf Lager
|
Mouser-Teilenr.
584-LTC5536ES6#TRPBF
|
Analog Devices
|
HF-Detektor 600MHz to 7GHz Prec HF-Detektor w/ Fast
|
|
467Auf Lager
|
|
|
6.79 CHF
|
|
|
5.28 CHF
|
|
|
4.89 CHF
|
|
|
4.50 CHF
|
|
|
4.30 CHF
|
|
|
3.94 CHF
|
|
Min.: 1
Mult.: 1
:
2 500
|
|
|
Precision RF Detector
|
|
|
|
|
|
Si
|
|
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor 600MHz to 7GHz Prec HF-Detektor w/ Fast
- LTC5536ES6#TRMPBF
- Analog Devices
-
1:
6.79 CHF
-
2 452Auf Lager
|
Mouser-Teilenr.
584-LTC5536ES6TRMPBF
|
Analog Devices
|
HF-Detektor 600MHz to 7GHz Prec HF-Detektor w/ Fast
|
|
2 452Auf Lager
|
|
Min.: 1
Mult.: 1
:
500
|
|
|
Precision RF Detector
|
600 MHz to 7 GHz
|
38 dB
|
Single
|
2.7 V to 5.5 V
|
|
Si
|
+ 85 C
|
- 40 C
|
SMD/SMT
|
SOT-23-6
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
HF-Detektor 40MHz to 10GHz RMS Pwr Detector w/ 57dB
- LTC5582HDD#PBF
- Analog Devices
-
1:
18.03 CHF
-
222Auf Lager
|
Mouser-Teilenr.
584-LTC5582HDD#PBF
|
Analog Devices
|
HF-Detektor 40MHz to 10GHz RMS Pwr Detector w/ 57dB
|
|
222Auf Lager
|
|
|
18.03 CHF
|
|
|
14.44 CHF
|
|
|
13.55 CHF
|
|
|
12.45 CHF
|
|
|
Anzeigen
|
|
|
11.93 CHF
|
|
|
11.73 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
RMS Power Detector
|
40 MHz to 10 GHz
|
57 dB
|
Single
|
3.3 V
|
|
Si
|
+ 125 C
|
- 40 C
|
SMD/SMT
|
DFN-10
|
|
Tube
|
|
Schweiz