|
|
EEPROM 256K 3.4MHz I2C SERIAL EEPROM, E-Temp, ECC, UDFN
- 24CS256T-E/Q4B
- Microchip Technology
-
1:
CHF 0.507
-
3’227Auf Lager
|
Mouser-Teilenr.
579-24CS256T-E/Q4B
|
Microchip Technology
|
EEPROM 256K 3.4MHz I2C SERIAL EEPROM, E-Temp, ECC, UDFN
|
|
3’227Auf Lager
|
|
|
CHF 0.507
|
|
|
CHF 0.507
|
|
Min.: 1
Mult.: 1
:
5’000
|
|
|
256 kbit
|
I2C
|
3.4 MHz
|
32 k x 8
|
UDFN-8
|
|
1.7 V
|
5.5 V
|
SMD/SMT
|
200 Year
|
- 40 C
|
+ 125 C
|
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 64KB I2C SER EEPROM MUX
- CAT24C64HU4I-GT3
- onsemi
-
1:
CHF 0.452
-
293’261Auf Lager
|
Mouser-Teilenr.
863-CAT24C64HU4I-GT3
|
onsemi
|
EEPROM 64KB I2C SER EEPROM MUX
|
|
293’261Auf Lager
|
|
|
CHF 0.452
|
|
|
CHF 0.428
|
|
|
CHF 0.417
|
|
|
CHF 0.408
|
|
|
Anzeigen
|
|
|
CHF 0.362
|
|
|
CHF 0.394
|
|
|
CHF 0.387
|
|
|
CHF 0.365
|
|
|
CHF 0.362
|
|
|
CHF 0.362
|
|
Min.: 1
Mult.: 1
Max.: 1’010
:
3’000
|
|
|
64 kbit
|
2-Wire, I2C
|
1 MHz
|
8 k x 8
|
UDFN-8
|
400 ns
|
1.7 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
CAT24C64
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
EEPROM 1.7-5.5V, 1MHz, Ind Tmp, 8-UDFN
- AT24C16C-MAHM-E
- Microchip Technology
-
1:
CHF 0.325
-
10’026Auf Lager
|
Mouser-Teilenr.
579-AT24C16C-MAHM-E
|
Microchip Technology
|
EEPROM 1.7-5.5V, 1MHz, Ind Tmp, 8-UDFN
|
|
10’026Auf Lager
|
|
|
CHF 0.325
|
|
|
CHF 0.32
|
|
|
CHF 0.303
|
|
|
CHF 0.30
|
|
|
Anzeigen
|
|
|
CHF 0.281
|
|
|
CHF 0.299
|
|
|
CHF 0.281
|
|
|
CHF 0.281
|
|
Min.: 1
Mult.: 1
:
15’000
|
|
|
16 kbit
|
2-Wire, I2C
|
1 MHz
|
2 k x 8
|
UDFN-8
|
450 ns
|
1.7 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT24C16C
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN
- AT25128B-MAHL-E
- Microchip Technology
-
1:
CHF 0.643
-
9’394Auf Lager
|
Mouser-Teilenr.
579-AT25128B-MAHL-E
|
Microchip Technology
|
EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN
|
|
9’394Auf Lager
|
|
|
CHF 0.643
|
|
|
CHF 0.642
|
|
|
CHF 0.601
|
|
|
CHF 0.597
|
|
|
CHF 0.588
|
|
|
CHF 0.588
|
|
Min.: 1
Mult.: 1
:
15’000
|
|
|
128 kbit
|
3-Wire, SPI
|
20 MHz
|
16 k x 8
|
UDFN-8
|
80 ns
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT25128B
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
EEPROM 1.7-3.6V, 1MHz, Ind Tmp, 8-UDFN
- AT24C01D-MAHM-E
- Microchip Technology
-
1:
CHF 0.207
-
29’102Auf Lager
|
Mouser-Teilenr.
579-AT24C01D-MAHM-E
|
Microchip Technology
|
EEPROM 1.7-3.6V, 1MHz, Ind Tmp, 8-UDFN
|
|
29’102Auf Lager
|
|
|
CHF 0.207
|
|
|
CHF 0.202
|
|
|
CHF 0.20
|
|
|
CHF 0.199
|
|
|
CHF 0.186
|
|
|
CHF 0.186
|
|
Min.: 1
Mult.: 1
:
15’000
|
|
|
1 kbit
|
2-Wire, I2C
|
1 MHz
|
128 x 8
|
UDFN-8
|
450 ns
|
1.7 V
|
3.6 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT24C01D
|
|
Reel, Cut Tape
|
|
|
|
EEPROM SERIAL EEPROM, 64K (8K X 8), 2-WIRE
- AT24CS64-MAHM-T
- Microchip Technology
-
5’000:
CHF 0.344
-
5’000Auf Lager
|
Mouser-Teilenr.
556-AT24CS64-MAHM-T
|
Microchip Technology
|
EEPROM SERIAL EEPROM, 64K (8K X 8), 2-WIRE
|
|
5’000Auf Lager
|
|
Min.: 5’000
Mult.: 5’000
:
5’000
|
|
|
64 kbit
|
2-Wire, I2C
|
1 MHz
|
8 k x 8
|
UDFN-8
|
|
1.7 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
|
|
Reel
|
|
|
|
EEPROM 4K (512 X 8) SPI, 1.8V
- AT25040B-MAHL-T
- Microchip Technology
-
5’000:
CHF 0.281
-
5’000Auf Lager
|
Mouser-Teilenr.
556-AT25040B-MAHL-T
|
Microchip Technology
|
EEPROM 4K (512 X 8) SPI, 1.8V
|
|
5’000Auf Lager
|
|
|
CHF 0.281
|
|
|
CHF 0.28
|
|
Min.: 5’000
Mult.: 5’000
:
5’000
|
|
|
4 kbit
|
3-Wire, SPI
|
20 MHz
|
512 x 8
|
UDFN-8
|
80 ns
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT25040B
|
|
Reel
|
|
|
|
EEPROM 1.7-5.5V, 1MHz, Ind Tmp, 8-UDFN
- AT24CS32-MAHM-E
- Microchip Technology
-
1:
CHF 0.349
-
16’791Auf Lager
|
Mouser-Teilenr.
556-AT24CS32-MAHM-E
|
Microchip Technology
|
EEPROM 1.7-5.5V, 1MHz, Ind Tmp, 8-UDFN
|
|
16’791Auf Lager
|
|
|
CHF 0.349
|
|
|
CHF 0.347
|
|
|
CHF 0.343
|
|
|
CHF 0.308
|
|
|
CHF 0.308
|
|
Min.: 1
Mult.: 1
:
15’000
|
|
|
32 kbit
|
2-Wire, I2C
|
1 MHz
|
4 k x 8
|
UDFN-8
|
550 ns
|
1.7 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
EEPROM 64K Density SPI 8,192 x 8 Organ
- AT25640B-MAHL-T
- Microchip Technology
-
5’000:
CHF 0.423
-
5’000Auf Lager
|
Mouser-Teilenr.
556-AT25640B-MAHL-T
|
Microchip Technology
|
EEPROM 64K Density SPI 8,192 x 8 Organ
|
|
5’000Auf Lager
|
|
Min.: 5’000
Mult.: 5’000
:
5’000
|
|
|
64 kbit
|
3-Wire, SPI
|
20 MHz
|
8 k x 8
|
UDFN-8
|
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT25640B
|
|
Reel
|
|
|
|
EEPROM 1.8-5.5V, 2MHz, Ind Tmp, 8-UDFN
- AT93C46DY6-YH-E
- Microchip Technology
-
1:
CHF 0.217
-
15’742Auf Lager
|
Mouser-Teilenr.
579-AT93C46DY6-YH-E
|
Microchip Technology
|
EEPROM 1.8-5.5V, 2MHz, Ind Tmp, 8-UDFN
|
|
15’742Auf Lager
|
|
|
CHF 0.217
|
|
|
CHF 0.217
|
|
Min.: 1
Mult.: 1
:
15’000
|
|
|
1 kbit
|
3-Wire, Microwire
|
2 MHz
|
128 x 8/64 x 16
|
UDFN-8
|
250 ns
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT93C46D
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
EEPROM SERIAL EEPROM 16K (2K X 8) 2-WIRE 1.7V
- AT24C16C-MAHM-T
- Microchip Technology
-
5’000:
CHF 0.278
-
5’000Auf Lager
|
Mouser-Teilenr.
556-AT24C16C-MAHM-T
|
Microchip Technology
|
EEPROM SERIAL EEPROM 16K (2K X 8) 2-WIRE 1.7V
|
|
5’000Auf Lager
|
|
Min.: 5’000
Mult.: 5’000
:
5’000
|
|
|
16 kbit
|
2-Wire, I2C
|
1 MHz
|
2 k x 8
|
UDFN-8
|
450 ns
|
1.7 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT24C16C
|
|
Reel
|
|
|
|
EEPROM 8 THIN MINI MAP 1.8V
- AT34C02D-MAHM-T
- Microchip Technology
-
5’000:
CHF 0.253
-
30’000Auf Lager
|
Mouser-Teilenr.
556-AT34C02D-MAHM-T
|
Microchip Technology
|
EEPROM 8 THIN MINI MAP 1.8V
|
|
30’000Auf Lager
|
|
Min.: 5’000
Mult.: 5’000
:
5’000
|
|
|
2 kbit
|
2-Wire, I2C
|
1 MHz
|
256 x 8
|
UDFN-8
|
|
1.7 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT34C02D
|
|
Reel
|
|
|
|
EEPROM 8KB I2C SER EEPROM UDFN WETTABLE FLANKS
- NV24C08MUW3VTBG
- onsemi
-
1:
CHF 0.388
-
2’998Auf Lager
|
Mouser-Teilenr.
863-NV24C08MUW3VTBG
|
onsemi
|
EEPROM 8KB I2C SER EEPROM UDFN WETTABLE FLANKS
|
|
2’998Auf Lager
|
|
|
CHF 0.388
|
|
|
CHF 0.156
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
8 kbit
|
I2C
|
400 kHz
|
512 x 16
|
UDFN-8
|
|
2.5 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 125 C
|
NV24C08MUW
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 32KB SPI SER CMOS EEPROM UDFN WETTABLE FLANKS
- NV25320MUW3VTBG
- onsemi
-
1:
CHF 0.579
-
3’000Auf Lager
|
Mouser-Teilenr.
863-NV25320MUW3VTBG
|
onsemi
|
EEPROM 32KB SPI SER CMOS EEPROM UDFN WETTABLE FLANKS
|
|
3’000Auf Lager
|
|
|
CHF 0.579
|
|
|
CHF 0.575
|
|
|
CHF 0.573
|
|
|
CHF 0.561
|
|
|
Anzeigen
|
|
|
CHF 0.313
|
|
|
CHF 0.55
|
|
|
CHF 0.533
|
|
|
CHF 0.521
|
|
|
CHF 0.509
|
|
|
CHF 0.313
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
32 kbit
|
SPI
|
10 MHz
|
4 k x 8
|
UDFN-8
|
|
2.5 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 125 C
|
NV25320MUW
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 64KB SPI SER CMOS EEPROM UDFN WETTABLE FLANKS
- NV25640MUW3VTBG
- onsemi
-
1:
CHF 0.586
-
2’411Auf Lager
|
Mouser-Teilenr.
863-NV25640MUW3VTBG
|
onsemi
|
EEPROM 64KB SPI SER CMOS EEPROM UDFN WETTABLE FLANKS
|
|
2’411Auf Lager
|
|
|
CHF 0.586
|
|
|
CHF 0.583
|
|
|
CHF 0.582
|
|
|
CHF 0.569
|
|
|
CHF 0.556
|
|
|
CHF 0.31
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
64 kbit
|
SPI
|
10 MHz
|
8 k x 8
|
UDFN-8
|
|
2.5 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 125 C
|
NV25640MUW
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 16KB SPI SER CMOS EEPROM UDFN WETTABLE FLANKS
- NV25160MUW3VTBG
- onsemi
-
1:
CHF 0.372
-
2’819Auf Lager
|
Mouser-Teilenr.
863-NV25160MUW3VTBG
|
onsemi
|
EEPROM 16KB SPI SER CMOS EEPROM UDFN WETTABLE FLANKS
|
|
2’819Auf Lager
|
|
|
CHF 0.372
|
|
|
CHF 0.348
|
|
|
CHF 0.337
|
|
|
CHF 0.331
|
|
|
Anzeigen
|
|
|
CHF 0.226
|
|
|
CHF 0.325
|
|
|
CHF 0.314
|
|
|
CHF 0.308
|
|
|
CHF 0.301
|
|
|
CHF 0.226
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
16 kbit
|
SPI
|
5 MHz
|
2 k x 8
|
UDFN-8
|
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 125 C
|
NV25160MUW
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 4KB I2C SER EEPROM UDFN WETTABLE FLANKS
- NV24C04MUW3VTBG
- onsemi
-
1:
CHF 0.381
-
2’885Auf Lager
|
Mouser-Teilenr.
863-NV24C04MUW3VTBG
|
onsemi
|
EEPROM 4KB I2C SER EEPROM UDFN WETTABLE FLANKS
|
|
2’885Auf Lager
|
|
|
CHF 0.381
|
|
|
CHF 0.194
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
4 kbit
|
I2C
|
400 kHz
|
128 x 16
|
UDFN-8
|
|
2.5 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 125 C
|
NV24C04MUW
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 32KB I2C SER EEPROM UDFN WETTABLE FLANKS
- NV24C32MUW3VTBG
- onsemi
-
1:
CHF 0.476
-
1’375Auf Lager
|
Mouser-Teilenr.
863-NV24C32MUW3VTBG
|
onsemi
|
EEPROM 32KB I2C SER EEPROM UDFN WETTABLE FLANKS
|
|
1’375Auf Lager
|
|
|
CHF 0.476
|
|
|
CHF 0.469
|
|
|
CHF 0.462
|
|
|
CHF 0.449
|
|
|
Anzeigen
|
|
|
CHF 0.219
|
|
|
CHF 0.439
|
|
|
CHF 0.428
|
|
|
CHF 0.219
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
32 kbit
|
I2C
|
400 kHz
|
4 k x 8
|
UDFN-8
|
|
2.5 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 125 C
|
NV24C32MUW
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 128KB SPI SER CMOS EEPROM UDFN WETTABLE FLANKS
- NV25128MUW3VTBG
- onsemi
-
1:
CHF 0.705
-
2’853Auf Lager
|
Mouser-Teilenr.
863-NV25128MUW3VTBG
|
onsemi
|
EEPROM 128KB SPI SER CMOS EEPROM UDFN WETTABLE FLANKS
|
|
2’853Auf Lager
|
|
|
CHF 0.705
|
|
|
CHF 0.704
|
|
|
CHF 0.691
|
|
|
CHF 0.67
|
|
|
Anzeigen
|
|
|
CHF 0.361
|
|
|
CHF 0.655
|
|
|
CHF 0.639
|
|
|
CHF 0.361
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
128 kbit
|
SPI
|
10 MHz
|
16 k x 8
|
UDFN-8
|
|
2.5 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 125 C
|
NV25128MUW
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN
- AT25320B-MAHL-E
- Microchip Technology
-
1:
CHF 0.412
-
12’243Auf Lager
|
Mouser-Teilenr.
579-AT25320B-MAHL-E
|
Microchip Technology
|
EEPROM 1.8-5.5V, 20MHz, Ind Tmp, 8-UDFN
|
|
12’243Auf Lager
|
|
|
CHF 0.412
|
|
|
CHF 0.405
|
|
|
CHF 0.383
|
|
|
CHF 0.378
|
|
|
Anzeigen
|
|
|
CHF 0.354
|
|
|
CHF 0.377
|
|
|
CHF 0.354
|
|
|
CHF 0.354
|
|
Min.: 1
Mult.: 1
:
15’000
|
|
|
32 kbit
|
3-Wire, SPI
|
20 MHz
|
4 k x 8
|
UDFN-8
|
80 ns
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
AT25320B
|
|
Reel, Cut Tape
|
|
|
|
EEPROM 4K Serial EEPROM SPD EEPROM for DDR4
- 34AA04T-I/MUY
- Microchip Technology
-
1:
CHF 0.325
-
19’444Auf Lager
|
Mouser-Teilenr.
579-34AA04T-I/MUY
|
Microchip Technology
|
EEPROM 4K Serial EEPROM SPD EEPROM for DDR4
|
|
19’444Auf Lager
|
|
|
CHF 0.325
|
|
|
CHF 0.315
|
|
|
CHF 0.314
|
|
|
CHF 0.313
|
|
|
CHF 0.268
|
|
Min.: 1
Mult.: 1
:
3’300
|
|
|
4 kbit
|
2-Wire, I2C
|
1 MHz
|
512 x 8
|
UDFN-8
|
350 ns
|
1.7 V
|
3.6 V
|
SMD/SMT
|
200 Year
|
- 40 C
|
+ 85 C
|
34AA04
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
EEPROM 4KB SPI SER CMOS EEPROM
- CAT25040HU4I-GT3
- onsemi
-
1:
CHF 0.381
-
12’716Auf Lager
|
Mouser-Teilenr.
863-CAT25040HU4I-GT3
|
onsemi
|
EEPROM 4KB SPI SER CMOS EEPROM
|
|
12’716Auf Lager
|
|
|
CHF 0.381
|
|
|
CHF 0.361
|
|
|
CHF 0.352
|
|
|
CHF 0.345
|
|
|
Anzeigen
|
|
|
CHF 0.227
|
|
|
CHF 0.337
|
|
|
CHF 0.328
|
|
|
CHF 0.312
|
|
|
CHF 0.264
|
|
|
CHF 0.227
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
4 kbit
|
3-Wire, SPI
|
20 MHz
|
512 x 8
|
UDFN-8
|
75 ns
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
CAT25040
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
EEPROM 16KB SPI SER CMOS EEPROM
- CAT25160HU4I-GT3
- onsemi
-
1:
CHF 0.563
-
6’000Auf Lager
|
Mouser-Teilenr.
863-CAT25160HU4I-GT3
|
onsemi
|
EEPROM 16KB SPI SER CMOS EEPROM
|
|
6’000Auf Lager
|
|
|
CHF 0.563
|
|
|
CHF 0.529
|
|
|
CHF 0.515
|
|
|
CHF 0.504
|
|
|
Anzeigen
|
|
|
CHF 0.29
|
|
|
CHF 0.493
|
|
|
CHF 0.479
|
|
|
CHF 0.454
|
|
|
CHF 0.317
|
|
|
CHF 0.29
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
16 kbit
|
3-Wire, SPI
|
20 MHz
|
2 k x 8
|
UDFN-8
|
75 ns
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 85 C
|
CAT25160
|
|
Reel, Cut Tape, MouseReel
|
|
|
|
EEPROM 256KB SPI SER CMOS EEPROM
- NV25256MUW3VTBG
- onsemi
-
1:
CHF 0.977
-
2’625Auf Lager
|
Mouser-Teilenr.
863-NV25256MUW3VTBG
|
onsemi
|
EEPROM 256KB SPI SER CMOS EEPROM
|
|
2’625Auf Lager
|
|
|
CHF 0.977
|
|
|
CHF 0.92
|
|
|
CHF 0.888
|
|
|
CHF 0.872
|
|
|
Anzeigen
|
|
|
CHF 0.538
|
|
|
CHF 0.857
|
|
|
CHF 0.824
|
|
|
CHF 0.656
|
|
|
CHF 0.634
|
|
|
CHF 0.538
|
|
Min.: 1
Mult.: 1
:
3’000
|
|
|
256 kbit
|
SPI
|
10 MHz
|
32 k x 8
|
UDFN-8
|
40 ns
|
1.8 V
|
5.5 V
|
SMD/SMT
|
100 Year
|
- 40 C
|
+ 125 C
|
NV25256MUW
|
AEC-Q101
|
Reel, Cut Tape
|
|
|
|
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp
- 24CW160T-I/MUY
- Microchip Technology
-
1:
CHF 0.896
-
134Auf Lager
|
Mouser-Teilenr.
579-24CW160MUY
|
Microchip Technology
|
EEPROM 16 Kbit I2C Serial EEPROM with Software Write Protection, Industrial Temp
|
|
134Auf Lager
|
|
|
CHF 0.896
|
|
|
CHF 0.864
|
|
|
CHF 0.833
|
|
|
CHF 0.833
|
|
Min.: 1
Mult.: 1
:
3’300
|
|
|
16 kbit
|
2-Wire, I2C
|
1 MHz
|
2 k x 8
|
UDFN-8
|
450 ns
|
1.6 V
|
5.5 V
|
SMD/SMT
|
200 Year
|
- 40 C
|
+ 85 C
|
24CW160
|
|
Reel, Cut Tape
|
|
Liechtenstein
