|
|
PTC-Thermistoren
- PRF15BB102RB6RC
- Murata Electronics
-
1:
0.106 CHF
-
50 599Auf Lager
|
Mouser-Teilenr.
81-PRF15BB102RB6RC
|
Murata Electronics
|
PTC-Thermistoren
|
|
50 599Auf Lager
|
|
|
0.106 CHF
|
|
|
0.10 CHF
|
|
|
0.087 CHF
|
|
|
0.083 CHF
|
|
|
0.058 CHF
|
|
|
Anzeigen
|
|
|
0.073 CHF
|
|
|
0.07 CHF
|
|
|
0.066 CHF
|
|
|
0.057 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRF
|
1 kOhms
|
50 %
|
PCB Mount
|
SMD/SMT
|
- 40 C
|
+ 140 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 100 OHM 20% SMD 0603
- PRG18BB101MB1RB
- Murata Electronics
-
1:
0.178 CHF
-
14 769Auf Lager
|
Mouser-Teilenr.
81-PRG18BB101MB1RB
|
Murata Electronics
|
PTC-Thermistoren 100 OHM 20% SMD 0603
|
|
14 769Auf Lager
|
|
|
0.178 CHF
|
|
|
0.163 CHF
|
|
|
0.143 CHF
|
|
|
0.136 CHF
|
|
|
0.106 CHF
|
|
|
Anzeigen
|
|
|
0.122 CHF
|
|
|
0.109 CHF
|
|
|
0.098 CHF
|
|
|
0.096 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG18-MB1RB
|
100 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 75 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 220 OHM 20% SMD 0603
- PRG18BB221MB1RB
- Murata Electronics
-
1:
0.171 CHF
-
43 346Auf Lager
|
Mouser-Teilenr.
81-PRG18BB221MB1RB
|
Murata Electronics
|
PTC-Thermistoren 220 OHM 20% SMD 0603
|
|
43 346Auf Lager
|
|
|
0.171 CHF
|
|
|
0.159 CHF
|
|
|
0.13 CHF
|
|
|
0.128 CHF
|
|
|
0.106 CHF
|
|
|
Anzeigen
|
|
|
0.12 CHF
|
|
|
0.112 CHF
|
|
|
0.095 CHF
|
|
|
0.088 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG18-MB1RB
|
220 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 75 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 33 OHM 20% SMD 0603
- PRG18BB330MB1RB
- Murata Electronics
-
1:
0.171 CHF
-
14 573Auf Lager
-
39 764Auf Bestellung
|
Mouser-Teilenr.
81-PRG18BB330MB1RB
|
Murata Electronics
|
PTC-Thermistoren 33 OHM 20% SMD 0603
|
|
14 573Auf Lager
39 764Auf Bestellung
|
|
|
0.171 CHF
|
|
|
0.16 CHF
|
|
|
0.141 CHF
|
|
|
0.134 CHF
|
|
|
0.10 CHF
|
|
|
Anzeigen
|
|
|
0.12 CHF
|
|
|
0.107 CHF
|
|
|
0.095 CHF
|
|
|
0.094 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG18-MB1RB
|
33 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 75 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 33 OHM 20% SMD 0603
- PRG18BB330MS1RB
- Murata Electronics
-
1:
0.308 CHF
-
6 830Auf Lager
|
Mouser-Teilenr.
81-PRG18BB330MS1RB
|
Murata Electronics
|
PTC-Thermistoren 33 OHM 20% SMD 0603
|
|
6 830Auf Lager
|
|
|
0.308 CHF
|
|
|
0.305 CHF
|
|
|
0.284 CHF
|
|
|
0.27 CHF
|
|
|
Anzeigen
|
|
|
0.212 CHF
|
|
|
0.257 CHF
|
|
|
0.233 CHF
|
|
|
0.221 CHF
|
|
|
0.212 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG18-MS1RB
|
33 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 40 C
|
+ 75 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 470 OHM 20% SMD 0603
- PRG18BB470MB1RB
- Murata Electronics
-
1:
0.243 CHF
-
9 915Auf Lager
-
16 000Auf Bestellung
|
Mouser-Teilenr.
81-PRG18BB470MB1RB
|
Murata Electronics
|
PTC-Thermistoren 470 OHM 20% SMD 0603
|
|
9 915Auf Lager
16 000Auf Bestellung
|
|
|
0.243 CHF
|
|
|
0.224 CHF
|
|
|
0.203 CHF
|
|
|
0.194 CHF
|
|
|
0.158 CHF
|
|
|
Anzeigen
|
|
|
0.178 CHF
|
|
|
0.167 CHF
|
|
|
0.146 CHF
|
|
|
0.145 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG18-MB1RB
|
47 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 75 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 22 OHM 20% SMD 0805
- PRG21AR220MS1RK
- Murata Electronics
-
1:
0.34 CHF
-
10 664Auf Lager
-
3 000Auf Bestellung
|
Mouser-Teilenr.
81-PRG21AR220MS1RK
|
Murata Electronics
|
PTC-Thermistoren 22 OHM 20% SMD 0805
|
|
10 664Auf Lager
3 000Auf Bestellung
|
|
|
0.34 CHF
|
|
|
0.317 CHF
|
|
|
0.296 CHF
|
|
|
0.281 CHF
|
|
|
Anzeigen
|
|
|
0.206 CHF
|
|
|
0.268 CHF
|
|
|
0.24 CHF
|
|
|
0.228 CHF
|
|
|
0.206 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG21-MS1RK
|
22 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 40 C
|
+ 105 C
|
AEC-Q100
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 15 OHM 20% SMD 0805
- PRG21BB150MB1RK
- Murata Electronics
-
1:
0.373 CHF
-
11 106Auf Lager
-
6 000Auf Bestellung
|
Mouser-Teilenr.
81-PRG21BB150MB1RK
|
Murata Electronics
|
PTC-Thermistoren 15 OHM 20% SMD 0805
|
|
11 106Auf Lager
6 000Auf Bestellung
|
|
|
0.373 CHF
|
|
|
0.349 CHF
|
|
|
0.326 CHF
|
|
|
0.31 CHF
|
|
|
Anzeigen
|
|
|
0.214 CHF
|
|
|
0.295 CHF
|
|
|
0.265 CHF
|
|
|
0.254 CHF
|
|
|
0.214 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG21-MB1RK
|
15 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 10 C
|
+ 60 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 22 OHM 20% SMD 0805
- PRG21BB220MB1RK
- Murata Electronics
-
1:
0.381 CHF
-
6 014Auf Lager
|
Mouser-Teilenr.
81-PRG21BB220MB1RK
|
Murata Electronics
|
PTC-Thermistoren 22 OHM 20% SMD 0805
|
|
6 014Auf Lager
|
|
|
0.381 CHF
|
|
|
0.356 CHF
|
|
|
0.333 CHF
|
|
|
0.316 CHF
|
|
|
Anzeigen
|
|
|
0.244 CHF
|
|
|
0.30 CHF
|
|
|
0.27 CHF
|
|
|
0.258 CHF
|
|
|
0.244 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG21-MB1RK
|
22 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 10 C
|
+ 60 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 1 OHM 20% SMD 0805
- PRG21BC1R0MM1RA
- Murata Electronics
-
1:
0.405 CHF
-
6 082Auf Lager
|
Mouser-Teilenr.
81-PRG21BC1R0MM1RA
|
Murata Electronics
|
PTC-Thermistoren 1 OHM 20% SMD 0805
|
|
6 082Auf Lager
|
|
|
0.405 CHF
|
|
|
0.381 CHF
|
|
|
0.356 CHF
|
|
|
0.338 CHF
|
|
|
Anzeigen
|
|
|
0.253 CHF
|
|
|
0.322 CHF
|
|
|
0.316 CHF
|
|
|
0.285 CHF
|
|
|
0.264 CHF
|
|
|
0.253 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG21-MM1RA
|
1 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 4.7 OHM 20% SMD 0805
- PRG21BC4R7MM1RA
- Murata Electronics
-
1:
0.389 CHF
-
6 772Auf Lager
|
Mouser-Teilenr.
81-PRG21BC4R7MM1RA
|
Murata Electronics
|
PTC-Thermistoren 4.7 OHM 20% SMD 0805
|
|
6 772Auf Lager
|
|
|
0.389 CHF
|
|
|
0.366 CHF
|
|
|
0.342 CHF
|
|
|
0.325 CHF
|
|
|
Anzeigen
|
|
|
0.24 CHF
|
|
|
0.31 CHF
|
|
|
0.279 CHF
|
|
|
0.268 CHF
|
|
|
0.24 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG21-MM1RA
|
4.7 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 6.8 OHM 20% SMD 0805
- PRG21BC6R8MM1RA
- Murata Electronics
-
1:
0.389 CHF
-
20 818Auf Lager
|
Mouser-Teilenr.
81-PRG21BC6R8MM1RA
|
Murata Electronics
|
PTC-Thermistoren 6.8 OHM 20% SMD 0805
|
|
20 818Auf Lager
|
|
|
0.389 CHF
|
|
|
0.365 CHF
|
|
|
0.34 CHF
|
|
|
0.324 CHF
|
|
|
Anzeigen
|
|
|
0.24 CHF
|
|
|
0.309 CHF
|
|
|
0.307 CHF
|
|
|
0.274 CHF
|
|
|
0.267 CHF
|
|
|
0.24 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG21-MM1RA
|
6.8 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren
- PRF18AS471QB5RB
- Murata Electronics
-
1:
0.154 CHF
-
3 420Auf Lager
|
Mouser-Teilenr.
81-PRF18AS471QB5RB
|
Murata Electronics
|
PTC-Thermistoren
|
|
3 420Auf Lager
|
|
|
0.154 CHF
|
|
|
0.143 CHF
|
|
|
0.126 CHF
|
|
|
0.119 CHF
|
|
|
0.07 CHF
|
|
|
Anzeigen
|
|
|
0.106 CHF
|
|
|
0.096 CHF
|
|
|
0.066 CHF
|
|
|
0.065 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRF
|
470 Ohms
|
50 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 160 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren
- PRF18BB471RB5RB
- Murata Electronics
-
1:
0.171 CHF
-
3 044Auf Lager
|
Mouser-Teilenr.
81-PRF18BB471RB5RB
|
Murata Electronics
|
PTC-Thermistoren
|
|
3 044Auf Lager
|
|
|
0.171 CHF
|
|
|
0.155 CHF
|
|
|
0.133 CHF
|
|
|
0.124 CHF
|
|
|
0.102 CHF
|
|
|
Anzeigen
|
|
|
0.109 CHF
|
|
|
0.106 CHF
|
|
|
0.093 CHF
|
|
|
0.091 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRF
|
470 Ohms
|
50 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 140 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren
- PRF18BD471RB5RB
- Murata Electronics
-
1:
0.316 CHF
-
2 171Auf Lager
|
Mouser-Teilenr.
81-PRF18BD471RB5RB
|
Murata Electronics
|
PTC-Thermistoren
|
|
2 171Auf Lager
|
|
|
0.316 CHF
|
|
|
0.297 CHF
|
|
|
0.263 CHF
|
|
|
0.25 CHF
|
|
|
0.189 CHF
|
|
|
Anzeigen
|
|
|
0.229 CHF
|
|
|
0.219 CHF
|
|
|
0.177 CHF
|
|
|
0.174 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRF
|
470 Ohms
|
50 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 120 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren
- PRF18BF471RB5RB
- Murata Electronics
-
1:
0.324 CHF
-
1 244Auf Lager
|
Mouser-Teilenr.
81-PRF18BF471RB5RB
|
Murata Electronics
|
PTC-Thermistoren
|
|
1 244Auf Lager
|
|
|
0.324 CHF
|
|
|
0.302 CHF
|
|
|
0.268 CHF
|
|
|
0.255 CHF
|
|
|
0.191 CHF
|
|
|
Anzeigen
|
|
|
0.229 CHF
|
|
|
0.214 CHF
|
|
|
0.178 CHF
|
|
|
0.175 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRF
|
470 Ohms
|
50 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 100 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren
- PRF21BD471QB5RA
- Murata Electronics
-
1:
0.356 CHF
-
1 210Auf Lager
|
Mouser-Teilenr.
81-PRF21BD471QB5RA
|
Murata Electronics
|
PTC-Thermistoren
|
|
1 210Auf Lager
|
|
|
0.356 CHF
|
|
|
0.327 CHF
|
|
|
0.291 CHF
|
|
|
0.266 CHF
|
|
|
0.165 CHF
|
|
|
Anzeigen
|
|
|
0.237 CHF
|
|
|
0.20 CHF
|
|
|
0.161 CHF
|
|
|
0.158 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRF
|
470 Ohms
|
50 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 110 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren
- PRG21BC3R3MM1RA
- Murata Electronics
-
1:
0.414 CHF
-
2 605Auf Lager
|
Mouser-Teilenr.
81-PRG21BC3R3MM1RA
|
Murata Electronics
|
PTC-Thermistoren
|
|
2 605Auf Lager
|
|
|
0.414 CHF
|
|
|
0.387 CHF
|
|
|
0.362 CHF
|
|
|
0.345 CHF
|
|
|
Anzeigen
|
|
|
0.263 CHF
|
|
|
0.328 CHF
|
|
|
0.296 CHF
|
|
|
0.284 CHF
|
|
|
0.263 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG21-MM1RA
|
3.3 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 33 OHM 20% SMD 0402
- PRG15BC330MM1RC
- Murata Electronics
-
1:
0.138 CHF
-
6 421Auf Lager
-
29 944Auf Bestellung
-
NRND
|
Mouser-Teilenr.
81-PRG15BC330MM1RC
NRND
|
Murata Electronics
|
PTC-Thermistoren 33 OHM 20% SMD 0402
|
|
6 421Auf Lager
29 944Auf Bestellung
|
|
|
0.138 CHF
|
|
|
0.124 CHF
|
|
|
0.108 CHF
|
|
|
0.103 CHF
|
|
|
Anzeigen
|
|
|
0.073 CHF
|
|
|
0.091 CHF
|
|
|
0.087 CHF
|
|
|
0.078 CHF
|
|
|
0.073 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG15-MM1RC
|
33 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren
- PRG15BC3R3MM1RC
- Murata Electronics
-
1:
0.13 CHF
-
5 582Auf Lager
-
NRND
|
Mouser-Teilenr.
81-PRG15BC3R3MM1RC
NRND
|
Murata Electronics
|
PTC-Thermistoren
|
|
5 582Auf Lager
|
|
|
0.13 CHF
|
|
|
0.122 CHF
|
|
|
0.106 CHF
|
|
|
0.101 CHF
|
|
|
0.073 CHF
|
|
|
Anzeigen
|
|
|
0.089 CHF
|
|
|
0.085 CHF
|
|
|
0.079 CHF
|
|
|
0.07 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG15-MM1RC
|
3.3 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 4.7 OHM 20% SMD 0402
- PRG15BC4R7MM1RC
- Murata Electronics
-
1:
0.13 CHF
-
4 090Auf Lager
-
10 000Auf Bestellung
-
NRND
|
Mouser-Teilenr.
81-PRG15BC4R7MM1RC
NRND
|
Murata Electronics
|
PTC-Thermistoren 4.7 OHM 20% SMD 0402
|
|
4 090Auf Lager
10 000Auf Bestellung
|
|
|
0.13 CHF
|
|
|
0.122 CHF
|
|
|
0.106 CHF
|
|
|
0.101 CHF
|
|
|
0.073 CHF
|
|
|
Anzeigen
|
|
|
0.089 CHF
|
|
|
0.085 CHF
|
|
|
0.077 CHF
|
|
|
0.072 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG15-MM1RC
|
4.7 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 1 OHM 20% SMD 0603
- PRG18BC1R0MM1RB
- Murata Electronics
-
1:
0.268 CHF
-
3 231Auf Lager
-
NRND
|
Mouser-Teilenr.
81-PRG18BC1R0MM1RB
NRND
|
Murata Electronics
|
PTC-Thermistoren 1 OHM 20% SMD 0603
|
|
3 231Auf Lager
|
|
|
0.268 CHF
|
|
|
0.246 CHF
|
|
|
0.217 CHF
|
|
|
0.206 CHF
|
|
|
0.159 CHF
|
|
|
Anzeigen
|
|
|
0.186 CHF
|
|
|
0.167 CHF
|
|
|
0.153 CHF
|
|
|
0.138 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG18-MM1RB
|
1 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 3.3 OHM 20% SMD 0603
- PRG18BC3R3MM1RB
- Murata Electronics
-
1:
0.268 CHF
-
167Auf Lager
-
NRND
|
Mouser-Teilenr.
81-PRG18BC3R3MM1RB
NRND
|
Murata Electronics
|
PTC-Thermistoren 3.3 OHM 20% SMD 0603
|
|
167Auf Lager
|
|
|
0.268 CHF
|
|
|
0.249 CHF
|
|
|
0.219 CHF
|
|
|
0.209 CHF
|
|
|
0.154 CHF
|
|
|
Anzeigen
|
|
|
0.187 CHF
|
|
|
0.175 CHF
|
|
|
0.147 CHF
|
|
|
0.138 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG18-MM1RB
|
3.3 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren 6.8 OHM 20% SMD 0603
- PRG18BC6R8MM1RB
- Murata Electronics
-
1:
0.235 CHF
-
3 934Auf Lager
-
NRND
|
Mouser-Teilenr.
81-PRG18BC6R8MM1RB
NRND
|
Murata Electronics
|
PTC-Thermistoren 6.8 OHM 20% SMD 0603
|
|
3 934Auf Lager
|
|
|
0.235 CHF
|
|
|
0.216 CHF
|
|
|
0.209 CHF
|
|
|
0.204 CHF
|
|
|
0.149 CHF
|
|
|
Anzeigen
|
|
|
0.183 CHF
|
|
|
0.176 CHF
|
|
|
0.139 CHF
|
|
|
0.133 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG18-MM1RB
|
6.8 Ohms
|
20 %
|
PCB Mount
|
SMD/SMT
|
- 20 C
|
+ 85 C
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
PTC-Thermistoren
- PRG21BC6R8MM1RK
- Murata Electronics
-
1:
0.673 CHF
-
1 310Auf Lager
-
NRND
|
Mouser-Teilenr.
81-PRG21BC6R8MM1RK
NRND
|
Murata Electronics
|
PTC-Thermistoren
|
|
1 310Auf Lager
|
|
|
0.673 CHF
|
|
|
0.521 CHF
|
|
|
0.448 CHF
|
|
|
0.432 CHF
|
|
|
Anzeigen
|
|
|
0.246 CHF
|
|
|
0.368 CHF
|
|
|
0.32 CHF
|
|
|
0.295 CHF
|
|
|
0.246 CHF
|
|
Min.: 1
Mult.: 1
|
|
|
PRG21-MM1RK
|
|
|
|
|
|
|
|
Reel, Cut Tape, MouseReel
|
|
Schweiz