.hide-partial { max-height: none; } .show-more { display: none; }

NOR Flash

Flash Memory is available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many flash memory manufacturers including Adesto Technologies, Cypress Semiconductor, Microchip, & more. Please view our selection of flash memory below.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 6,564

Applied Filters:

Manufacturer

Mounting Style

Package/Case

Series

Memory Size

Supply Voltage - Min

Supply Voltage - Max

Active Read Current - Max

Interface Type

Maximum Clock Frequency

Organisation

Data Bus Width

Timing Type

Minimum Operating Temperature

Maximum Operating Temperature

Qualification

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, SOIC-N 150mil (Tape & Reel), Single SPI DataFlash (Micron M25PE Replacement)

AT25PE40-SSHN-T
Renesas / Dialog
1: $1.53
3,932In Stock

Mfr. Part No.
AT25PE40-SSHN-T

Mouser Part No
988-AT25PE40-SSHN-T

Renesas / Dialog

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, SOIC-N 150mil (Tape & Reel), Single SPI DataFlash (Micron M25PE Replacement)

Learn More

Datasheet

3,932In Stock

Cut Tape

$1.53

$1.44

$1.40

$1.37

View

Reel

$1.16

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

SMD/SMT

SOIC-Wide-8

AT25PE40

4 Mbit

1.65 V

3.6 V

16 mA

SPI

85 MHz

512 k x 8

8 bit

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, 256 Byte Binary Page Mode, DFN 5x6 (Tape & Reel), Single SPI DataFlash

AT45DB041E-MHN2B-T
Renesas / Dialog
1: $1.77
4,271In Stock

Mfr. Part No.
AT45DB041E-MHN2B-T

Mouser Part No
988-AT45DB041EMHN2BT

Renesas / Dialog

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, 256 Byte Binary Page Mode, DFN 5x6 (Tape & Reel), Single SPI DataFlash

Learn More

Datasheet

4,271In Stock

Cut Tape

$1.77

$1.66

$1.61

$1.58

View

Reel

$1.33

MouseReel Available

Min.: 1
Mult.: 1

Reel: 6,000

SMD/SMT

UDFN-8

AT45DB041E

4 Mbit

1.65 V

3.6 V

15 mA

SPI

70 MHz

512 k x 8

8 bit

Synchronous

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash 16 Mbit, 3.0V (2.5V to 3.6V), -40C to 85C, 528 Byte Binary Page Mode, SOIC-N 150mil (Tape & Reel), Single SPI DataFlash

AT45DB161E-SSHD-T
Renesas / Dialog
1: $2.93
5,778In Stock

Mfr. Part No.
AT45DB161E-SSHD-T

Mouser Part No
556-AT45DB161E-SSHDT

Renesas / Dialog

NOR Flash 16 Mbit, 3.0V (2.5V to 3.6V), -40C to 85C, 528 Byte Binary Page Mode, SOIC-N 150mil (Tape & Reel), Single SPI DataFlash

Learn More

Datasheet

5,778In Stock

Cut Tape

$2.93

$2.74

$2.66

$2.60

View

Reel

$2.13

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

SMD/SMT

SOIC-Narrow-8

AT45DB161E

16 Mbit

2.5 V

3.6 V

22 mA

SPI

70 MHz

2 M x 8

8 bit

Synchronous

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash 4Mb, 2.3V to 3.6V, SPI,SDI,SQI, 104MHz, I temp, 8-SOIC, T&R

SST26VF040AT-104I/SN
Microchip Technology
1: $1.19
3,140In Stock

Mfr. Part No.
SST26VF040AT-104I/SN

Mouser Part No
579-6VF040AT-104I/SN

Microchip Technology

NOR Flash 4Mb, 2.3V to 3.6V, SPI,SDI,SQI, 104MHz, I temp, 8-SOIC, T&R

Learn More

Datasheet

3,140In Stock

Cut Tape

$1.19

$1.15

$1.10

Reel

$1.10

Min.: 1
Mult.: 1

Reel: 3,300

SMD/SMT

SOIC-8

4 Mbit

2.7 V

3.6 V

20 mA

SPI

104 MHz

512 k x 8

8 bit

- 40 C

+ 85 C

Reel, Cut Tape

NOR Flash 16Mbit SPI/SQI flash, 125C Industrial, 2.3V-3.6V

SST26VF016BT-80E/MF
Microchip Technology
1: $2.61
2,348In Stock

Mfr. Part No.
SST26VF016BT-80E/MF

Mouser Part No
579-T26VF016BT-80EMF

Microchip Technology

NOR Flash 16Mbit SPI/SQI flash, 125C Industrial, 2.3V-3.6V

Learn More

Datasheet

2,348In Stock

Cut Tape

$2.61

$2.54

$2.43

$2.26

Reel

$2.26

$2.25

Min.: 1
Mult.: 1

Reel: 2,000

SMD/SMT

16 Mbit

2.3 V

3.6 V

20 mA

SPI

80 MHz

2 M x 8

8 bit

- 40 C

+ 125 C

Reel, Cut Tape

NOR Flash 1 Mbit, Ultra Low Energy, Wide Vcc (1.65V to 3.6V), -40C to 85C, SOIC-N 150mil (Tube), Single, Dual, Quad SPI NOR flash

AT25EU0011A-SSHN-B
Renesas / Dialog
1: $0.34
9,605In Stock

Mfr. Part No.
AT25EU0011A-SSHN-B

Mouser Part No
724-AT25EU0011ASSHNB

Renesas / Dialog

NOR Flash 1 Mbit, Ultra Low Energy, Wide Vcc (1.65V to 3.6V), -40C to 85C, SOIC-N 150mil (Tube), Single, Dual, Quad SPI NOR flash

Learn More

Datasheet

9,605In Stock

$0.34

$0.316

$0.309

$0.296

View

Min.: 1
Mult.: 1

SMD/SMT

SOIC-Narrow-8

AT25EU0011A

1 Mbit

1.65 V

3.6 V

SPI

128 k x 8

8 bit

- 40 C

+ 85 C

Tube

NOR Flash IC 128 Mb FLASHMEM

S25FL128LAGMFB000
Infineon Technologies
1: $2.93
2,294In Stock

Mfr. Part No.
S25FL128LAGMFB000

Mouser Part No
727-S25FL128LAGMF000

Infineon Technologies

NOR Flash IC 128 Mb FLASHMEM

Learn More

Datasheet

2,294In Stock

$2.93

$2.74

$2.66

$2.60

View

Min.: 1
Mult.: 1

SMD/SMT

SOIC-16

S25FL128L

128 Mbit

2.7 V

3.6 V

100 mA

SPI

133 MHz

16 M x 8

8 bit

Synchronous

- 40 C

+ 105 C

AEC-Q100

Tray

NOR Flash STD SPI

S25FL128SAGBHVA00
Infineon Technologies
1: $4.30
654In Stock

Mfr. Part No.
S25FL128SAGBHVA00

Mouser Part No
727-S25FL128SAGBHVA0

Infineon Technologies

NOR Flash STD SPI

Learn More

Datasheet

654In Stock

$4.30

$4.01

$3.89

$3.80

View

Min.: 1
Mult.: 1

SMD/SMT

BGA-24

S25FL128S

128 Mbit

2.7 V

3.6 V

100 mA

SPI

133 MHz

16 M x 8

8 bit

Synchronous

- 40 C

+ 105 C

Tray

NOR Flash Nor

S25FL256LAGBHM020
Infineon Technologies
1: $4.83
675In Stock

Mfr. Part No.
S25FL256LAGBHM020

Mouser Part No
727-S25FL256LAGHM020

Infineon Technologies

NOR Flash Nor

Learn More

Datasheet

675In Stock

$4.83

$4.60

$4.51

$4.44

View

Min.: 1
Mult.: 1

SMD/SMT

BGA-24

S25FL256L

256 Mbit

2.7 V

3.6 V

35 mA

SPI

133 MHz

32 M x 8

8 bit

Synchronous

- 40 C

+ 125 C

AEC-Q100

Tray

NOR Flash STD SPI

S25FL512SAGMFV010
Infineon Technologies
1: $8.83
1,444In Stock

Mfr. Part No.
S25FL512SAGMFV010

Mouser Part No
727-S25FL512SAGMFV00

Infineon Technologies

NOR Flash STD SPI

Learn More

Datasheet

1,444In Stock

$8.83

$8.20

$7.95

$7.46

View

Min.: 1
Mult.: 1

SMD/SMT

SOIC-16

S25FL512S

512 Mbit

2.7 V

3.6 V

90 mA

SPI

133 MHz

64 M x 8

8 bit

Synchronous

- 40 C

+ 105 C

Tray

NOR Flash STD SPI

S25FL512SDPMFVG10
Infineon Technologies
1: $8.46
2,604In Stock

Mfr. Part No.
S25FL512SDPMFVG10

Mouser Part No
727-S25FL512SDPMFVG0

Infineon Technologies

NOR Flash STD SPI

Learn More

Datasheet

2,604In Stock

$8.46

$7.88

$7.64

$7.46

View

Min.: 1
Mult.: 1

SMD/SMT

SOIC-16

S25FL512S

512 Mbit

2.7 V

3.6 V

90 mA

SPI

66 MHz

64 M x 8

8 bit

Synchronous

- 40 C

+ 105 C

Tray

NOR Flash Nor

S25FS128SAGMFB100
Infineon Technologies
1: $2.39
1,491In Stock

Mfr. Part No.
S25FS128SAGMFB100

Mouser Part No
727-S25FS128SAMFB100

Infineon Technologies

NOR Flash Nor

Learn More

Datasheet

1,491In Stock

$2.39

$2.23

$2.17

$2.12

View

Min.: 1
Mult.: 1

SMD/SMT

SOIC-8

S25FS128S

128 Mbit

1.7 V

2 V

90 mA

SPI

133 MHz

16 M x 8

8 bit

Synchronous

- 40 C

+ 105 C

AEC-Q100

Tray

NOR Flash PNOR

S29GL512T10FHI030
Infineon Technologies
1: $12.31
192In Stock

Mfr. Part No.
S29GL512T10FHI030

Mouser Part No
727-S29GL512T10FH030

Infineon Technologies

NOR Flash PNOR

Learn More

Datasheet

192In Stock

$12.31

$11.44

$11.08

$10.82

View

Min.: 1
Mult.: 1

SMD/SMT

FBGA-64

S29GL512T

512 Mbit

2.7 V

3.6 V

60 mA

Parallel

64 M x 8/32 M x 16

8 bit/16 bit

Asynchronous

- 40 C

+ 85 C

Tray

NOR Flash 64Mb, 3V, 70ns Parallel NOR Flash

S29GL064S70DHI030
Infineon Technologies
1: $5.18
485In Stock

Mfr. Part No.
S29GL064S70DHI030

Mouser Part No
797-29GL064S70DHI030

Infineon Technologies

NOR Flash 64Mb, 3V, 70ns Parallel NOR Flash

Datasheet

485In Stock

$5.18

$4.83

$4.68

$4.57

View

Min.: 1
Mult.: 1

SMD/SMT

BGA-64

S29GL064S

64 Mbit

2.7 V

3.6 V

50 mA

Parallel

8 M x 8

8 bit

Asynchronous

- 40 C

+ 85 C

Tray

NOR Flash 64MB 3V, 80ns Parallel NOR Flash

S29GL064S80TFIV10
Infineon Technologies
1: $5.15
999In Stock

Mfr. Part No.
S29GL064S80TFIV10

Mouser Part No
797-29GL064S80TFIV10

Infineon Technologies

NOR Flash 64MB 3V, 80ns Parallel NOR Flash

Datasheet

999In Stock

$5.15

$4.80

$4.66

$4.46

View

Min.: 1
Mult.: 1

SMD/SMT

TSOP-56

S29GL064S

64 Mbit

2.7 V

3.6 V

50 mA

Parallel

8 M x 8

8 bit

Asynchronous

- 40 C

+ 85 C

Tray

NOR Flash 512MB 3V 100ns Parallel NOR Flash

S29GL512S10TFI013
Infineon Technologies
1: $11.71
1,106In Stock

Mfr. Part No.
S29GL512S10TFI013

Mouser Part No
797-29GL512S10TFI013

Infineon Technologies

NOR Flash 512MB 3V 100ns Parallel NOR Flash

Datasheet

1,106In Stock

Cut Tape

$11.71

$10.88

$10.55

$10.28

View

Reel

$6.35

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

SMD/SMT

TSOP-56

S29GL512S

512 Mbit

2.7 V

3.6 V

60 mA

Parallel

32 M x 16

16 bit

Asynchronous

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash 512Mb 3V 110ns Parallel NOR Flash

S29GL512S11TFI010
Infineon Technologies
1: $9.47
455In Stock

Mfr. Part No.
S29GL512S11TFI010

Mouser Part No
797-S29GL512S11TFI01

Infineon Technologies

NOR Flash 512Mb 3V 110ns Parallel NOR Flash

Datasheet

455In Stock

$9.47

$9.02

$8.80

$8.67

View

Min.: 1
Mult.: 1

SMD/SMT

TSOP-56

S29GL512S

512 Mbit

2.7 V

3.6 V

60 mA

Parallel

32 M x 16

16 bit

Asynchronous

- 40 C

+ 85 C

Tray

NOR Flash 256K X 8 14 us

SST25VF020-20-4C-SAE
Microchip Technology
1: $1.06
1,965In Stock

Mfr. Part No.
SST25VF020-20-4C-SAE

Mouser Part No
804-25VF0202CSAE

Microchip Technology

NOR Flash 256K X 8 14 us

Datasheet

Product Comments

1,965In Stock

$1.06

$1.02

$0.958

Min.: 1
Mult.: 1

SMD/SMT

SOIC-8

SST25VF

2 Mbit

2.7 V

3.6 V

10 mA

SPI

20 MHz

256 k x 8

8 bit

Synchronous

0 C

+ 70 C

Tube

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, SOIC-N 150mil (Tape & Reel), FusionHD System Enhancing (Single, Dual, Quad) SPI NOR flash

AT25XE041D-SSHN-T
Renesas / Dialog
1: $0.61
8,082In Stock

Mfr. Part No.
AT25XE041D-SSHN-T

Mouser Part No
988-25XE041D-SSHN-T

Renesas / Dialog

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, SOIC-N 150mil (Tape & Reel), FusionHD System Enhancing (Single, Dual, Quad) SPI NOR flash

Learn More

Datasheet

8,082In Stock

Cut Tape

$0.61

$0.575

$0.56

$0.549

View

Reel

$0.461

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

SMD/SMT

SOIC-Narrow-8

AT25XE041D

4 Mbit

1.65 V

3.6 V

15.5 mA

SPI

133 MHz

512 k x 8

8 bit

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, 256 Byte Binary Page Mode, WLCSP (Tape & Reel), Single SPI DataFlash

AT45DB041E-SSHNHT-T
Renesas / Dialog
1: $1.94
10,806In Stock

Mfr. Part No.
AT45DB041E-SSHNHT-T

Mouser Part No
988-45DB041ESSHNHTT

Renesas / Dialog

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, 256 Byte Binary Page Mode, WLCSP (Tape & Reel), Single SPI DataFlash

Learn More

Datasheet

10,806In Stock

Cut Tape

$1.94

$1.82

$1.76

$1.72

View

Reel

$1.32

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

SMD/SMT

AT45DB041E

4 Mbit

1.65 V

3.6 V

20 mA

SPI

85 MHz

512 k x 8

8 bit

- 40 C

+ 125 C

Reel, Cut Tape, MouseReel

NOR Flash 16 Mbit, 3.0V (2.3V to 3.6V), -40C to 85C, 512 Byte Binary Page Mode, SOIC-N 150mil (Tape & Reel), Single SPI DataFlash

AT45DB161E-SSHF2B-T
Renesas / Dialog
1: $2.98
3,561In Stock

Mfr. Part No.
AT45DB161E-SSHF2B-T

Mouser Part No
988-45DB161ESSHF2BT

Renesas / Dialog

NOR Flash 16 Mbit, 3.0V (2.3V to 3.6V), -40C to 85C, 512 Byte Binary Page Mode, SOIC-N 150mil (Tape & Reel), Single SPI DataFlash

Learn More

Datasheet

3,561In Stock

Cut Tape

$2.98

$2.79

$2.71

$2.65

View

Reel

$2.25

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

SMD/SMT

SOIC-Narrow-8

AT45DB161E

16 Mbit

2.3 V

3.6 V

22 mA

SPI

70 MHz

2 M x 8

8 bit

Synchronous

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, WLCSP (Tape & Reel), Single, Dual SPI NOR flash

AT25DF041B-UUN-T
Renesas / Dialog
1: $1.22
18,722In Stock

Mfr. Part No.
AT25DF041B-UUN-T

Mouser Part No
988-AT25DF041B-UUN-T

Renesas / Dialog

NOR Flash 4 Mbit, Wide Vcc (1.65V to 3.6V), -40C to 85C, WLCSP (Tape & Reel), Single, Dual SPI NOR flash

Learn More

Datasheet

18,722In Stock

Cut Tape

$1.22

$1.15

$1.12

$1.09

View

Reel

$0.925

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

SMD/SMT

AT25DF041B

4 Mbit

1.65 V

3.6 V

15 mA

SPI

104 MHz

512 k x 8

8 bit

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash 512 Kbit, 3.0V (2.3V to 3.6V), -40C to 85C, SOIC-N 150mil (Tube), Single, Dual SPI NOR flash

AT25DN512C-SSHF-B
Renesas / Dialog
1: $0.46
19,329In Stock

Mfr. Part No.
AT25DN512C-SSHF-B

Mouser Part No
988-AT25DN512CSSHF-B

Renesas / Dialog

NOR Flash 512 Kbit, 3.0V (2.3V to 3.6V), -40C to 85C, SOIC-N 150mil (Tube), Single, Dual SPI NOR flash

Learn More

Datasheet

19,329In Stock

$0.46

$0.433

$0.423

$0.405

View

Min.: 1
Mult.: 1

SMD/SMT

SOIC-Narrow-8

AT25DN512C

512 kbit

2.3 V

3.6 V

18 mA

SPI

104 MHz

64 k x 8

8 bit

Synchronous

- 40 C

+ 85 C

Tube

NOR Flash 16 Mbit, 3.0V (2.7V to 3.6V), -40C to 85C, DFN 5x6 (Tape & Reel), Single, Dual, Quad SPI NOR flash

AT25SF161B-MHB-T
Renesas / Dialog
1: $0.90
10,136In Stock

Mfr. Part No.
AT25SF161B-MHB-T

Mouser Part No
988-AT25SF161B-MHB-T

Renesas / Dialog

NOR Flash 16 Mbit, 3.0V (2.7V to 3.6V), -40C to 85C, DFN 5x6 (Tape & Reel), Single, Dual, Quad SPI NOR flash

Learn More

Datasheet

10,136In Stock

Cut Tape

$0.90

$0.848

$0.825

$0.807

View

Reel

$0.674

MouseReel Available

Min.: 1
Mult.: 1

Reel: 6,000

SMD/SMT

UDFN-8

AT25SF161B

16 Mbit

2.7 V

3.6 V

20 mA

SPI

108 MHz

2 M x 8

8 bit

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash 64 Mbit, 3.0V (2.7V to 3.6V), -40C to 85C, DFN 5x6 (Tape & Reel), Single, Dual, Quad SPI NOR flash

AT25SF641B-MHB-T
Renesas / Dialog
1: $1.58
6,578In Stock

Mfr. Part No.
AT25SF641B-MHB-T

Mouser Part No
988-AT25SF641B-MHB-T

Renesas / Dialog

NOR Flash 64 Mbit, 3.0V (2.7V to 3.6V), -40C to 85C, DFN 5x6 (Tape & Reel), Single, Dual, Quad SPI NOR flash

Learn More

Datasheet

6,578In Stock

Cut Tape

$1.58

$1.48

$1.44

$1.41

View

Reel

$1.19

MouseReel Available

Min.: 1
Mult.: 1

Reel: 6,000

SMD/SMT

UDFN-8

AT25SF641B

64 Mbit

2.7 V

3.6 V

20 mA

SPI

108 MHz

8 M x 8

8 bit

- 40 C

+ 85 C

Reel, Cut Tape, MouseReel

NOR Flash

Customer Service Office

Company

Resources

Support

BGA-24
BGA-240
BGA-48
BGA-56
BGA-64
CSP-8
DFN-8
Die
DSO-16
FBGA-24
FBGA-48
FBGA-56
FBGA-64
FBGA-80
FO-USON-8
LAA-64
LAE-64
LBGA-64
LFBGA-24
LFBGA-48

AS25F
AS29CF010
AS29CF040
AS29CF160
AS29CF800
AT25DF011
AT25DF021A
AT25DF041B
AT25DF256
AT25DF512C
AT25DN011
AT25DN256
AT25DN512C
AT25EU0011A
AT25EU0021A
AT25EU0041A
AT25EU0081A
AT25EU0161A
AT25FF041A
AT25FF081A

1.2 mA
2 mA
3 mA
3.7 mA
4.4 mA
5 mA
5.25 mA
5.5 mA
6 mA
6.5 mA
7 mA
7.5 mA
8 mA
9 mA
9.5 mA
10 mA
10.5 mA
11 mA
12 mA
13 mA

4-Wire
DTR/Dual/Quad SPI, QPI, SPI
DTR/Dual/Quad SPI, SPI
DTR/Quad SPI, QPI, SPI
DTR SPI, OPI, SPI
Dual/Quad SPI
Dual/Quad SPI, QPI, SPI
Dual/Quad SPI, SPI
Dual/Quad SPI/QPI
Dual SPI
Dual SPI, SPI
Parallel
QPI
QPI, Quad SPI, SPI
QPI, SPI
Quad SPI
Serial
SPI
SPI, QPI
SPI, SQI

20 MHz
30 MHz
33 MHz
40 MHz
45 MHz
50 MHz
52 MHz
56 MHz
60 MHz
66 MHz
70 MHz
75 MHz
80 MHz
84 MHz
85 MHz
86 MHz
100 MHz
102 MHz
104 MHz
108 MHz

4 k x 8
32 k x 8
64 k x 8
128 k x 16
128 k x 4
128 k x 8
256 k x 16
256 k x 2
256 k x 4
256 k x 8
512 k x 1/256 k x 2
512 k x 16
512 k x 2
512 k x 32
512 k x 4
512 k x 8
512 k x 8/256 k x 16
1 M x 16
1 M x 2
1 M x 4