|
|
Digitale Isolatoren 3.75 kVrms isolator, 1 unidirectional channel
- SI86S610BC-IS
- Skyworks Solutions, Inc.
-
1:
CHF 3.15
-
39Auf Lager
|
Mouser-Teilenr.
873-SI86S610BC-IS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 1 unidirectional channel
|
|
39Auf Lager
|
|
|
CHF 3.15
|
|
|
CHF 2.13
|
|
|
CHF 1.97
|
|
|
CHF 1.28
|
|
|
CHF 1.27
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
1 Channel
|
Unidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
5.5 V
|
2.25 V
|
10 ns
|
- 40 C
|
+ 125 C
|
Tube
|
|
|
|
Digitale Isolatoren 6.0 kVrms isolator, 2 unidirectional channels, automotive version
- SI86S620BE-AS4
- Skyworks Solutions, Inc.
-
1:
CHF 3.91
-
789Auf Lager
|
Mouser-Teilenr.
873-SI86S620BE-AS4
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms isolator, 2 unidirectional channels, automotive version
|
|
789Auf Lager
|
|
|
CHF 3.91
|
|
|
CHF 2.98
|
|
|
CHF 2.52
|
|
|
CHF 2.41
|
|
|
Anzeigen
|
|
|
CHF 2.34
|
|
|
CHF 2.28
|
|
|
CHF 2.22
|
|
|
CHF 2.17
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-8
|
2 Channel
|
Unidirectional
|
150 Mb/s
|
6000 Vrms
|
Capacitive Coupling
|
5.5 V
|
2.25 V
|
13.5 ns
|
- 40 C
|
+ 125 C
|
Tube
|
|
|
|
Digitale Isolatoren 6.0 kVrms isolator, 6 unidirectional channels
- SI86S663BE-IS2
- Skyworks Solutions, Inc.
-
1:
CHF 5.72
-
582Auf Lager
|
Mouser-Teilenr.
873-SI86S663BE-IS2
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms isolator, 6 unidirectional channels
|
|
582Auf Lager
|
|
|
CHF 5.72
|
|
|
CHF 4.41
|
|
|
CHF 3.91
|
|
|
CHF 3.65
|
|
|
Anzeigen
|
|
|
CHF 3.53
|
|
|
CHF 3.45
|
|
|
CHF 3.35
|
|
|
CHF 3.31
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-WB-16
|
6 Channel
|
Unidirectional
|
|
6000 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels, automotive version
- SI86S620BC-AS
- Skyworks Solutions, Inc.
-
1:
CHF 2.58
-
96Auf Lager
|
Mouser-Teilenr.
873-SI86S620BC-AS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels, automotive version
|
|
96Auf Lager
|
|
|
CHF 2.58
|
|
|
CHF 2.01
|
|
|
CHF 1.76
|
|
|
CHF 1.67
|
|
|
Anzeigen
|
|
|
CHF 1.65
|
|
|
CHF 1.63
|
|
|
CHF 1.61
|
|
|
CHF 1.59
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-8
|
2 Channel
|
Unidirectional
|
150 Mb/s
|
3750 Vrms
|
Capacitive Coupling
|
5.5 V
|
2.25 V
|
13.5 ns
|
- 40 C
|
+ 125 C
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
- SI86S620BC-IS
- Skyworks Solutions, Inc.
-
1:
CHF 2.58
-
190Auf Lager
|
Mouser-Teilenr.
873-SI86S620BC-IS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
|
|
190Auf Lager
|
|
|
CHF 2.58
|
|
|
CHF 1.94
|
|
|
CHF 1.60
|
|
|
CHF 1.54
|
|
|
Anzeigen
|
|
|
CHF 1.50
|
|
|
CHF 1.45
|
|
|
CHF 1.42
|
|
|
CHF 1.37
|
|
|
CHF 1.35
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
2 Channel
|
Unidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
5.5 V
|
2.25 V
|
10 ns
|
- 40 C
|
+ 125 C
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
- SI86S621BC-IS
- Skyworks Solutions, Inc.
-
1:
CHF 3.70
-
526Auf Lager
|
Mouser-Teilenr.
873-SI86S621BC-IS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
|
|
526Auf Lager
|
|
|
CHF 3.70
|
|
|
CHF 2.46
|
|
|
CHF 2.28
|
|
|
CHF 1.98
|
|
|
Anzeigen
|
|
|
CHF 1.87
|
|
|
CHF 1.68
|
|
|
CHF 1.42
|
|
|
CHF 1.38
|
|
|
CHF 1.35
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
2 Channel
|
Unidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 6.0 kVrms isolator, 2 unidirectional channels
- SI86S621BE-IS4
- Skyworks Solutions, Inc.
-
1:
CHF 3.14
-
154Auf Lager
|
Mouser-Teilenr.
873-SI86S621BE-IS4
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms isolator, 2 unidirectional channels
|
|
154Auf Lager
|
|
|
CHF 3.14
|
|
|
CHF 2.44
|
|
|
CHF 2.32
|
|
|
CHF 2.00
|
|
|
Anzeigen
|
|
|
CHF 1.87
|
|
|
CHF 1.83
|
|
|
CHF 1.81
|
|
|
CHF 1.80
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SSO-8
|
2 Channel
|
Unidirectional
|
|
6000 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 4 unidirectional channels, automotive version
- SI86S641BC-AS1
- Skyworks Solutions, Inc.
-
1:
CHF 4.75
-
63Auf Lager
|
Mouser-Teilenr.
873-SI86S641BC-AS1
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 4 unidirectional channels, automotive version
|
|
63Auf Lager
|
|
|
CHF 4.75
|
|
|
CHF 3.64
|
|
|
CHF 3.20
|
|
|
CHF 2.99
|
|
|
Anzeigen
|
|
|
CHF 2.88
|
|
|
CHF 2.81
|
|
|
CHF 2.74
|
|
|
CHF 2.67
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-16
|
4 Channel
|
Unidirectional
|
150 Mb/s
|
3750 Vrms
|
Capacitive Coupling
|
5.5 V
|
2.25 V
|
9 ns
|
- 40 C
|
+ 125 C
|
Tube
|
|
|
|
Digitale Isolatoren 6.0 kVrms isolator, 4 unidirectional channels, automotive version
- SI86S642BE-AS2
- Skyworks Solutions, Inc.
-
1:
CHF 5.22
-
59Auf Lager
|
Mouser-Teilenr.
873-SI86S642BE-AS2
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms isolator, 4 unidirectional channels, automotive version
|
|
59Auf Lager
|
|
|
CHF 5.22
|
|
|
CHF 4.01
|
|
|
CHF 3.55
|
|
|
CHF 3.32
|
|
|
Anzeigen
|
|
|
CHF 3.20
|
|
|
CHF 3.12
|
|
|
CHF 3.04
|
|
|
CHF 2.96
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-16
|
4 Channel
|
Unidirectional
|
150 Mb/s
|
6000 Vrms
|
Capacitive Coupling
|
5.5 V
|
2.25 V
|
9 ns
|
- 40 C
|
+ 125 C
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
- SI86S622EC-IS
- Skyworks Solutions, Inc.
-
1:
CHF 3.71
-
25Auf Lager
|
Mouser-Teilenr.
873-SI86S622EC-IS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
|
|
25Auf Lager
|
|
|
CHF 3.71
|
|
|
CHF 2.47
|
|
|
CHF 2.29
|
|
|
CHF 1.59
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
2 Channel
|
Unidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 6.0 kVrms isolator, 4 unidirectional channels
- SI86S642EE-IS2
- Skyworks Solutions, Inc.
-
1:
CHF 5.38
-
24Auf Lager
|
Mouser-Teilenr.
873-SI86S642EE-IS2
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms isolator, 4 unidirectional channels
|
|
24Auf Lager
|
|
|
CHF 5.38
|
|
|
CHF 3.77
|
|
|
CHF 3.00
|
|
|
CHF 2.60
|
|
|
Anzeigen
|
|
|
CHF 2.40
|
|
|
CHF 2.37
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-WB-16
|
4 Channel
|
Unidirectional
|
|
6000 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 6.0 kVrms isolator, 1 unidirectional channel
- SI86S610BE-IS4
- Skyworks Solutions, Inc.
-
1:
CHF 3.92
-
70erwartet ab 23.04.2026
|
Mouser-Teilenr.
873-SI86S610BE-IS4
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms isolator, 1 unidirectional channel
|
|
70erwartet ab 23.04.2026
|
|
|
CHF 3.92
|
|
|
CHF 2.62
|
|
|
CHF 2.43
|
|
|
CHF 1.74
|
|
|
Anzeigen
|
|
|
CHF 1.57
|
|
|
CHF 1.53
|
|
|
CHF 1.49
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SSO-8
|
1 Channel
|
Unidirectional
|
|
6000 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 1 unidirectional channel
- SI86S610EC-IS
- Skyworks Solutions, Inc.
-
1:
CHF 3.15
-
86erwartet ab 27.02.2026
|
Mouser-Teilenr.
873-SI86S610EC-IS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 1 unidirectional channel
|
|
86erwartet ab 27.02.2026
|
|
|
CHF 3.15
|
|
|
CHF 2.13
|
|
|
CHF 1.71
|
|
|
CHF 1.28
|
|
|
CHF 1.27
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
1 Channel
|
Unidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
- SI86S621FC-IS
- Skyworks Solutions, Inc.
-
1:
CHF 3.70
-
46erwartet ab 23.04.2026
|
Mouser-Teilenr.
873-SI86S621FC-IS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
|
|
46erwartet ab 23.04.2026
|
|
|
CHF 3.70
|
|
|
CHF 2.46
|
|
|
CHF 2.28
|
|
|
CHF 1.59
|
|
|
Anzeigen
|
|
|
CHF 1.46
|
|
|
CHF 1.42
|
|
|
CHF 1.38
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
2 Channel
|
Unidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
- SI86S622BC-IS
- Skyworks Solutions, Inc.
-
1:
CHF 3.70
-
46erwartet ab 23.04.2026
|
Mouser-Teilenr.
873-SI86S622BC-IS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 2 unidirectional channels
|
|
46erwartet ab 23.04.2026
|
|
|
CHF 3.70
|
|
|
CHF 2.46
|
|
|
CHF 2.28
|
|
|
CHF 1.59
|
|
|
Anzeigen
|
|
|
CHF 1.46
|
|
|
CHF 1.42
|
|
|
CHF 1.38
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
2 Channel
|
Unidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 6.0 kVrms isolator, 2 unidirectional channels, automotive version
- SI86S622BE-AS4
- Skyworks Solutions, Inc.
-
1:
CHF 3.91
-
80erwartet ab 02.04.2026
|
Mouser-Teilenr.
873-SI86S622BE-AS4
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms isolator, 2 unidirectional channels, automotive version
|
|
80erwartet ab 02.04.2026
|
|
|
CHF 3.91
|
|
|
CHF 2.98
|
|
|
CHF 2.41
|
|
|
CHF 2.34
|
|
|
Anzeigen
|
|
|
CHF 2.28
|
|
|
CHF 2.22
|
|
|
CHF 2.17
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SSO-8
|
2 Channel
|
Unidirectional
|
150 Mb/s
|
6000 Vrms
|
Capacitive Coupling
|
5.5 V
|
2.25 V
|
13.5 ns
|
- 40 C
|
+ 125 C
|
Tube
|
|
|
|
Digitale Isolatoren 2.5 kVrms isolator, 6 unidirectional channels , automotive version
- SI86S660EB-AU
- Skyworks Solutions, Inc.
-
1:
CHF 7.84
-
96erwartet ab 16.04.2026
|
Mouser-Teilenr.
873-SI86S660EB-AU
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 2.5 kVrms isolator, 6 unidirectional channels , automotive version
|
|
96erwartet ab 16.04.2026
|
|
|
CHF 7.84
|
|
|
CHF 5.88
|
|
|
CHF 5.60
|
|
|
CHF 4.86
|
|
|
Anzeigen
|
|
|
CHF 4.64
|
|
|
CHF 4.23
|
|
|
CHF 3.73
|
|
|
CHF 3.63
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
QSOP-16
|
|
|
|
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms isolator, 6 unidirectional channels
- SI86S661BC-IS1
- Skyworks Solutions, Inc.
-
1:
CHF 5.07
-
48erwartet ab 21.07.2026
|
Mouser-Teilenr.
873-SI86S661BC-IS1
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms isolator, 6 unidirectional channels
|
|
48erwartet ab 21.07.2026
|
|
|
CHF 5.07
|
|
|
CHF 3.99
|
|
|
CHF 3.55
|
|
|
CHF 3.31
|
|
|
Anzeigen
|
|
|
CHF 3.15
|
|
|
CHF 3.14
|
|
|
CHF 3.10
|
|
|
CHF 3.03
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-16
|
6 Channel
|
Unidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms, I2C isolator, 2 bidirectional channels, automotive version
- SI86S600AC-AS
- Skyworks Solutions, Inc.
-
1:
CHF 8.08
-
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
Mouser-Teilenr.
873-SI86S600AC-AS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms, I2C isolator, 2 bidirectional channels, automotive version
|
|
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
|
|
|
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms, I2C isolator, 2 bidirectional channels, automotive version
- SI86S600AC-ASR
- Skyworks Solutions, Inc.
-
2’500:
CHF 3.85
-
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
Mouser-Teilenr.
873-SI86S600AC-ASR
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms, I2C isolator, 2 bidirectional channels, automotive version
|
|
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
|
Min.: 2’500
Mult.: 2’500
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
|
|
|
|
Capacitive Coupling
|
|
|
|
|
|
Reel
|
|
|
|
Digitale Isolatoren 3.75 kVrms, I2C isolator, 2 bidirectional channels
- SI86S600AC-IS
- Skyworks Solutions, Inc.
-
1:
CHF 7.32
-
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
Mouser-Teilenr.
873-SI86S600AC-IS
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms, I2C isolator, 2 bidirectional channels
|
|
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
|
|
CHF 7.32
|
|
|
CHF 5.21
|
|
|
CHF 3.78
|
|
|
CHF 3.67
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
2 Channel
|
Bidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 3.75 kVrms, I2C isolator, 2 bidirectional channels
- SI86S600AC-ISR
- Skyworks Solutions, Inc.
-
2’500:
CHF 3.15
-
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
Mouser-Teilenr.
873-SI86S600AC-ISR
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 3.75 kVrms, I2C isolator, 2 bidirectional channels
|
|
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
|
Min.: 2’500
Mult.: 2’500
|
|
|
Si86S6x
|
SMD/SMT
|
SOIC-NB-8
|
2 Channel
|
Bidirectional
|
|
3750 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Reel
|
|
|
|
Digitale Isolatoren 6.0 kVrms, I2C isolator, 2 bidirectional channels, automotive version
- SI86S600AE-AS4
- Skyworks Solutions, Inc.
-
1:
CHF 9.68
-
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
Mouser-Teilenr.
873-SI86S600AE-AS4
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms, I2C isolator, 2 bidirectional channels, automotive version
|
|
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SSO-8
|
|
|
|
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
|
|
Digitale Isolatoren 6.0 kVrms, I2C isolator, 2 bidirectional channels, automotive version
- SI86S600AE-AS4R
- Skyworks Solutions, Inc.
-
1’250:
CHF 4.72
-
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
Mouser-Teilenr.
873-SI86S600AE-AS4R
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms, I2C isolator, 2 bidirectional channels, automotive version
|
|
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
|
Min.: 1’250
Mult.: 1’250
|
|
|
Si86S6x
|
SMD/SMT
|
SSO-8
|
|
|
|
|
Capacitive Coupling
|
|
|
|
|
|
Reel
|
|
|
|
Digitale Isolatoren 6.0 kVrms, I2C isolator, 2 bidirectional channels
- SI86S600AE-IS4
- Skyworks Solutions, Inc.
-
1:
CHF 8.13
-
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
Mouser-Teilenr.
873-SI86S600AE-IS4
|
Skyworks Solutions, Inc.
|
Digitale Isolatoren 6.0 kVrms, I2C isolator, 2 bidirectional channels
|
|
Nicht-auf-Lager-Vorlaufzeit 10 Wochen
|
|
|
CHF 8.13
|
|
|
CHF 6.28
|
|
|
CHF 5.20
|
|
|
CHF 4.45
|
|
Min.: 1
Mult.: 1
|
|
|
Si86S6x
|
SMD/SMT
|
SSO-8
|
2 Channel
|
Bidirectional
|
|
6000 Vrms
|
Capacitive Coupling
|
|
|
|
|
|
Tube
|
|
Liechtenstein