Contact
Website map
Worldwide
|
Home
Home
Company
About us
Certificates
Sales conditions
Partnership co-operation
News
Distribution
Varta Microbattery
Jamicon
SamYoung
VINATech
Pilkor
Okaya
Dongil Electronic
Prosperity Dielectrics
Walsin
HY Electronic
Cooltron
Mentor
Murrplastik
Cincon
Betterfuse
Huawei
Stock
Contact
Poland
Azerbaijan
Georgia
Ukraine
Resistors
Carbon resistors
Cement resistors
Metal film resistors
Resistor array
SMD resistors
Wire wound resistors
Rows to display
10
25
50
100
Items
17701
to
17725
out of
24745
<<
-10
<
704
705
706
707
708
709
710
711
712
713
714
>
+10
>>
Manufacturer's part number
Manufacturer
Index Ropla
Info
Availability
Net price
MOQ
Multiple
17701
FCF25JP-915
PDC
SMD Chip Resistor 2512 9.1MΩ 5% 1W
0 pcs
on stock
0.0783390 PLN
4000
4000
PDR07568
Casing
: 2512 (6432)
Temperature
: -55/+155°C
Show similar
>>
CR-12JL4---9M1
Viking Tech Corporation
SMD Chip Resistor 2512 9.1MΩ 5% 1W
0 pcs
on stock
by special order
0.0785793 PLN
4000
4000
VKG4831
Casing
: 2512 (6432)
Temperature
: -55/+155°C
>>
25121WF9104T4E
Royal Ohm
SMD Chip Resistor 2512 9.10MΩ 1% 1W
0 pcs
on stock
0.1605854 PLN
4000
4000
RHM10749
Casing
: 2512 (6432)
Temperature
: -55/+155°C
>>
25121WJ0915T4E
Royal Ohm
SMD Chip Resistor 2512 9.1MΩ 5% 1W
0 pcs
on stock
0.0782339 PLN
4000
4000
RHM10970
Casing
: 2512 (6432)
Temperature
: -55/+155°C
>>
FCF25FP-9104
PDC
SMD Chip Resistor 2512 9.10MΩ 1% 1W
0 pcs
on stock
0.0937010 PLN
4000
4000
PDR06209
Casing
: 2512 (6432)
Temperature
: -55/+155°C
17702
FCF25JP-106
PDC
SMD Chip Resistor 2512 10MΩ 5% 1W
0 pcs
on stock
0.0783390 PLN
4000
4000
PDR07569
Casing
: 2512 (6432)
Temperature
: -55/+155°C
Show similar
>>
CR-12JL4---10M
Viking Tech Corporation
SMD Chip Resistor 2512 10MΩ 5% 1W
0 pcs
on stock
by special order
0.0785793 PLN
4000
4000
VKG4742
Casing
: 2512 (6432)
Temperature
: -55/+155°C
>>
25121WF1005T4E
Royal Ohm
SMD Chip Resistor 2512 10.0MΩ 1% 1W
0 pcs
on stock
0.1605854 PLN
4000
4000
RHM10753
Casing
: 2512 (6432)
Temperature
: -55/+155°C
>>
25121WJ0106T4E
Royal Ohm
SMD Chip Resistor 2512 10MΩ 5% 1W
0 pcs
on stock
0.0782339 PLN
4000
4000
RHM10971
Casing
: 2512 (6432)
Temperature
: -55/+155°C
>>
FCF25FP-1005
PDC
SMD Chip Resistor 2512 10.0MΩ 1% 1W
0 pcs
on stock
0.0937010 PLN
4000
4000
PDR06083
Casing
: 2512 (6432)
Temperature
: -55/+155°C
17703
FCF05DT-1002
PDC
SMD Chip Resistor 0805 10.0kΩ 0.5% 1/8W
0 pcs
on stock
0.3129840 PLN
5000
5000
PDR07570
Casing
: 0805 (2012)
Temperature
: -55/+155°C
Show similar
>>
0805W8D1002T5E
Royal Ohm
SMD Chip Resistor 0805 10.0kΩ 0,5% 1/8W
355,000 pcs
on stock
0.0288230 PLN
5000
5000
RHM10980 (OHM0045)
Casing
: 0805 (2012)
Temperature
: -55/+155°C
17704
FVF25FP-1504
PDC
SMD Chip Resistor 2512 1.50MΩ 1% 1W
0 pcs
on stock
0.2218710 PLN
20000
4000
PDR07571
Casing
: 2512 (6432)
Temperature
: -55/+155°C
Show similar
>>
CR-12FL4---1M5
Viking Tech Corporation
SMD Chip Resistor 2512 1.5MΩ 1% 1W
0 pcs
on stock
by special order
0.1516490 PLN
4000
4000
VKG4546
Casing
: 2512 (6432)
Temperature
: -55/+155°C
>>
25121WF1504T4E
Royal Ohm
SMD Chip Resistor 2512 1.50MΩ 1% 1W
0 pcs
on stock
0.1605854 PLN
4000
4000
RHM10657
Casing
: 2512 (6432)
Temperature
: -55/+155°C
>>
FCF25FP-1504
PDC
SMD Chip Resistor 2512 1.50MΩ 1% 1W
0 pcs
on stock
0.0937010 PLN
4000
4000
PDR06004
Casing
: 2512 (6432)
Temperature
: -55/+155°C
17705
FVF25FP-1205
PDC
SMD Chip Resistor 2512 12.0MΩ 1% 1W
100 pcs
on stock
0.2420410 PLN
20000
4000
PDR07572
Casing
: 2512 (6432)
Temperature
: -55/+155°C
17706
FCF03FT-4701
PDC
SMD Chip Resistor 0603 4.70kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07573
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---4K7
Viking Tech Corporation
SMD Chip Resistor 0603 4.7kΩ 1% 1/10W
+
0 pcs
140,000 pcs
on stock
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG1804
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF4701T5E
Royal Ohm
SMD Chip Resistor 0603 4.70kΩ 1% 1/10W
20,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03359 (OHM0836)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17707
FCF05FT-1501
PDC
SMD Chip Resistor 0805 1.5kΩ 1% 1/8W
40,000 pcs
on stock
0.0074570 PLN
5000
5000
PDR07574
Casing
: 0805 (2012)
Temperature
: -55/+155°C
Show similar
>>
CR-05FL7---1K5
Viking Tech Corporation
SMD Chip Resistor 0805 1.5kΩ 1% 1/8W
50,000 pcs
on stock
by special order
0.0055999 PLN
5000
5000
VKG2565
Casing
: 0805 (2012)
Temperature
: -55/+155°C
>>
0805W8F1501T5E
Royal Ohm
SMD Chip Resistor 0805 1.50kΩ 1% 1/8W
40,000 pcs
on stock
0.0071646 PLN
5000
5000
RHM04433 (OHM0674)
Casing
: 0805 (2012)
Temperature
: -55/+155°C
17708
FCF03FT-2700
PDC
SMD Chip Resistor 0603 270Ω 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07575
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7--270R
Viking Tech Corporation
SMD Chip Resistor 0603 270Ω 1% 1/10W
+
0 pcs
10,000 pcs
on stock
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG2029
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF2700T5E
Royal Ohm
SMD Chip Resistor 0603 270Ω 1% 1/10W
55,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03216 (OHM0806)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17709
FCF03FT-6200
PDC
SMD Chip Resistor 0603 620Ω 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07576
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7--620R
Viking Tech Corporation
SMD Chip Resistor 0603 620Ω 1% 1/10W
0 pcs
on stock
by special order
0.0031612 PLN
5000
5000
VKG2228
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF6200T5E
Royal Ohm
SMD Chip Resistor 0603 620Ω 1% 1/10W
25,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03260 (OHM0815)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17710
FCF03FT-1601
PDC
SMD Chip Resistor 0603 1.60kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07577
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---1K6
Viking Tech Corporation
SMD Chip Resistor 0603 1.6kΩ 1% 1/10W
+
50,000 pcs
100,000 pcs
on stock
from 2024-06-17
by special order
0.0031612 PLN
5000
5000
VKG1746
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF1601T5E
Royal Ohm
SMD Chip Resistor 0603 1.60kΩ 1% 1/10W
0 pcs
on stock
0.0041999 PLN
5000
5000
RHM03304 (OHM0825)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17711
FCF03FT-2401
PDC
SMD Chip Resistor 0603 2.40kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07578
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---2K4
Viking Tech Corporation
SMD Chip Resistor 0603 2.4kΩ 1% 1/10W
0 pcs
on stock
by special order
0.0031612 PLN
5000
5000
VKG1771
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF2401T5E
Royal Ohm
SMD Chip Resistor 0603 2.40kΩ 1% 1/10W
60,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03324 (OHM0829)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17712
FCF03FT-6201
PDC
SMD Chip Resistor 0603 6.20kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07579
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---6K2
Viking Tech Corporation
SMD Chip Resistor 0603 6.2kΩ 1% 1/10W
0 pcs
on stock
by special order
0.0031612 PLN
5000
5000
VKG1827
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF6201T5E
Royal Ohm
SMD Chip Resistor 0603 6.20kΩ 1% 1/10W
55,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03374 (OHM0839)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17713
FCF03FT-4702
PDC
SMD Chip Resistor 0603 47.0kΩ 1% 1/10W
10,000 pcs
on stock
0.0041320 PLN
5000
5000
PDR07580
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---47K
Viking Tech Corporation
SMD Chip Resistor 0603 47kΩ 1% 1/10W
+
100,000 pcs
5,000 pcs
on stock
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG1801
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF4702T5E
Royal Ohm
SMD Chip Resistor 0603 47.0kΩ 1% 1/10W
280,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03473 (OHM0860)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17714
FCF03FT-2400
PDC
SMD Chip Resistor 0603 240Ω 1% 1/10W
10,000 pcs
on stock
0.0041320 PLN
5000
5000
PDR07581
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7--240R
Viking Tech Corporation
SMD Chip Resistor 0603 240Ω 1% 1/10W
0 pcs
on stock
by special order
0.0031612 PLN
5000
5000
VKG2009
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF2400T5E
Royal Ohm
SMD Chip Resistor 0603 240Ω 1% 1/10W
0 pcs
on stock
0.0041999 PLN
5000
5000
RHM03210 (OHM0805)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17715
FCF03FT-4703
PDC
SMD Chip Resistor 0603 470kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07582
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7--470K
Viking Tech Corporation
SMD Chip Resistor 0603 470kΩ 1% 1/10W
+
50,000 pcs
15,000 pcs
on stock
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG2150
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF4703T5E
Royal Ohm
SMD Chip Resistor 0603 470kΩ 1% 1/10W
145,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03587 (OHM0884)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17716
FCF03FT-5602
PDC
SMD Chip Resistor 0603 56.0kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07583
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
WR06X5602FTL
Walsin Technology
SMD Chip Resistor Thick Film 0603 56kΩ 1% 1/10W
0 pcs
on stock
0.0037384 PLN
10000
10000
WAL0702
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
CR-03FL7---56K
Viking Tech Corporation
SMD Chip Resistor 0603 56kΩ 1% 1/10W
+
40,000 pcs
55,000 pcs
on stock
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG1812
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF5602T5E
Royal Ohm
SMD Chip Resistor 0603 56.0kΩ 1% 1/10W
0 pcs
on stock
0.0041999 PLN
5000
5000
RHM03482 (OHM0862)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17717
FCF03FT-4700
PDC
SMD Chip Resistor 0603 470Ω 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07584
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7--470R
Viking Tech Corporation
SMD Chip Resistor 0603 470Ω 1% 1/10W
+
0 pcs
140,000 pcs
on stock
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG2151
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF4700T5E
Royal Ohm
SMD Chip Resistor 0603 470Ω 1% 1/10W
25,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03245 (OHM0812)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17718
FCF03FT-2200
PDC
SMD Chip Resistor 0603 220Ω 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07585
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7--220R
Viking Tech Corporation
SMD Chip Resistor 0603 220Ω 1% 1/10W
+
+
0 pcs
35,000 pcs
15,000 pcs
on stock
from 2024-06-17
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG1995
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF2200T5E
Royal Ohm
SMD Chip Resistor 0603 220Ω 1% 1/10W
40,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03205 (OHM0804)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17719
FCF03FT-18R0
PDC
SMD Chip Resistor 0603 18.0Ω 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07587
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---18R
Viking Tech Corporation
SMD Chip Resistor 0603 18Ω 1% 1/10W
0 pcs
on stock
by special order
0.0031612 PLN
5000
5000
VKG1740
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF180JT5E
Royal Ohm
SMD Chip Resistor 0603 18.0Ω 1% 1/10W
20,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03082 (OHM0778)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17720
FCF03FT-3300
PDC
SMD Chip Resistor 0603 330Ω 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07588
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7--330R
Viking Tech Corporation
SMD Chip Resistor 0603 330Ω 1% 1/10W
+
+
0 pcs
40,000 pcs
40,000 pcs
on stock
from 2024-07-27
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG2077
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF3300T5E
Royal Ohm
SMD Chip Resistor 0603 330Ω 1% 1/10W
0 pcs
on stock
0.0041999 PLN
5000
5000
RHM03226 (OHM0808)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17721
FCF03FT-2201
PDC
SMD Chip Resistor 0603 2.20kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07590
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---2K2
Viking Tech Corporation
SMD Chip Resistor 0603 2.2kΩ 1% 1/10W
+
25,000 pcs
200,000 pcs
on stock
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG1770
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF2201T5E
Royal Ohm
SMD Chip Resistor 0603 2.20kΩ 1% 1/10W
0 pcs
on stock
0.0041999 PLN
5000
5000
RHM03319 (OHM0828)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17722
FCF03FT-2701
PDC
SMD Chip Resistor 0603 2.70kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07591
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---2K7
Viking Tech Corporation
SMD Chip Resistor 0603 2.7kΩ 1% 1/10W
+
45,000 pcs
20,000 pcs
on stock
from 2024-07-27
by special order
0.0031612 PLN
5000
5000
VKG1772
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF2701T5E
Royal Ohm
SMD Chip Resistor 0603 2.70kΩ 1% 1/10W
0 pcs
on stock
0.0041999 PLN
5000
5000
RHM03330 (OHM0830)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17723
FCF03FT-3002
PDC
SMD Chip Resistor 0603 30.0kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07592
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---30K
Viking Tech Corporation
SMD Chip Resistor 0603 30kΩ 1% 1/10W
0 pcs
on stock
by special order
0.0031612 PLN
5000
5000
VKG1780
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF3002T5E
Royal Ohm
SMD Chip Resistor 0603 30.0kΩ 1% 1/10W
80,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03449 (OHM0855)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17724
FCF03FT-1602
PDC
SMD Chip Resistor 0603 16.0kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR07593
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7---16K
Viking Tech Corporation
SMD Chip Resistor 0603 16kΩ 1% 1/10W
0 pcs
on stock
by special order
0.0031612 PLN
5000
5000
VKG1737
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF1602T5E
Royal Ohm
SMD Chip Resistor 0603 16.0kΩ 1% 1/10W
55,000 pcs
on stock
0.0041999 PLN
5000
5000
RHM03418 (OHM0849)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
17725
FCF03JT-224
PDC
SMD Chip Resistor 0603 220kΩ 5% 1/10W
0 pcs
on stock
0.0039540 PLN
5000
5000
PDR07594
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Show similar
>>
CR-03FL7--220K
Viking Tech Corporation
SMD Chip Resistor 0603 220kΩ 1% 1/10W
+
140,000 pcs
20,000 pcs
on stock
from 2024-08-25
by special order
0.0031612 PLN
5000
5000
VKG1994
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
CR-03JL7--220K
Viking Tech Corporation
SMD Chip Resistor 0603 220kΩ 5% 1/10W
+
0 pcs
10,000 pcs
on stock
from 2024-08-25
by special order
0.0030709 PLN
5000
5000
VKG2499
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAF2203T5E
Royal Ohm
SMD Chip Resistor 0603 220kΩ 1% 1/10W
0 pcs
on stock
0.0041999 PLN
5000
5000
RHM03547 (OHM0876)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
0603WAJ0224T5E
Royal Ohm
SMD Chip Resistor 0603 220kΩ 5% 1/10W
20,000 pcs
on stock
0.0032941 PLN
5000
5000
RHM03917 (OHM0392)
Casing
: 0603 (1608)
Temperature
: -55/+155°C
>>
FCF03FT-224
PDC
SMD Chip Resistor 0603 220kΩ 1% 1/10W
0 pcs
on stock
0.0041320 PLN
5000
5000
PDR06679
Casing
: 0603 (1608)
Temperature
: -55/+155°C
Rows to display
10
25
50
100
Items
17701
to
17725
out of
24745
<<
-10
<
704
705
706
707
708
709
710
711
712
713
714
>
+10
>>
Search
Availability
all
>= 1
>= 10
>= 100
>= 1000
>= 10000
>= 100000
Antennas
Batteries & Rechargeable Cells
Capacitors
Converters
Electrotechnics Components
EMI Components
Inductors, Chokes & Coils
Optoelectronics Components
Power Supplies and Chargers
Quartz and filters
Resistors
Carbon resistors
Cement resistors
Metal film resistors
Resistor array
SMD resistors
Wire wound resistors
Semiconductors
Sensors
Surge Protection