类别是'category.内存模块' (5401)

  • 所有品牌

对比

图片

产品型号

品牌

数据表

库存

价格(含增值税)

数量

Rohs

包装/外壳

表面安装

材料

Housing material

终端数量

Additional functions

Additionally

Alternating current voltage

Case

Date Of Intro

Dielectric strength

Dimension X

Dimension Y

Dimension Z

Electrical mounting

Enclosure description

Enclosure series

Enclosures application

Gate current

Glue stick diameter mm

Gross weight

Head and button shape

Heating time

Illuation color

Illumination voltage

Indicator type

LED lifespan

Max. forward impulse current

Max. forward voltage

Max. off-state voltage

Mechanical mounting

厂商

Mounting diameter

Noal voltage

Nominal load current

Nominal load power

Number of switching cycles (electrical)

Relative humidity

Ripple level

Semiconductor structure

Shrinkage diameter after

Shrinkage diameter before

Shrinkage temperature

Switching cycles (electrical)

Switching scheme

Thickness after shrinkage

Transport package size/quantity

Transport packaging size / quantity

Transport packaging size/quantity

Type of enclosure

Type of module

Useful height (B)

包装

系列

JESD-609代码

无铅代码

ECCN 代码

温度系数

Connector type

类型

电阻

端子表面处理

颜色

附加功能

HTS代码

子类别

额定功率

端子位置

终端形式

峰值回流焊温度(摄氏度)

功能数量

端子间距

深度

电阻器类型

Reach合规守则

时间@峰值回流温度-最大值(s)

引脚数量

JESD-30代码

资历状况

效率

电源电压-最大值(Vsup)

Contact resistance

温度等级

电源电压-最小值(Vsup)

Insulation resistance

界面

内存大小

操作模式

程序内存大小

电源电流-最大值

Switch type

数据总线宽度

组织结构

输出特性

座位高度-最大

内存宽度

产品类别

Operating temperature range

待机电流-最大值

Rated current

记忆密度

筛选水平

并行/串行

I/O类型

内存IC类型

编程电压

Shrinkage ratio

电阻公差

串行总线类型

Load current

耐力

写入周期时间 - 最大值

电源

数据保持时间

写入保护

备用内存宽度

数据轮询

拨动位

命令用户界面

扇区/尺寸数

行业规模

页面尺寸

准备就绪/忙碌

引导模块

通用闪存接口

饱和电流

特征

Operating voltage

Power supply type

产品类别

触点

产品长度

IP rating

直径

高度

长度

宽度

器件厚度

TMM24512F
TMM24512F
Toshiba America Electronic Components 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

28

65536 words

64000

70 °C

PLASTIC/EPOXY

SOP

SOP28,.5

RECTANGULAR

小概要

5 V

活跃

TOSHIBA CORP

SOP, SOP28,.5

e0

EAR99

Tin/Lead (Sn/Pb)

8542.32.00.71

DUAL

鸥翼

1.27 mm

unknown

R-PDSO-G28

不合格

COMMERCIAL

64KX8

3-STATE

8

524288 bit

COMMON

S29GL512N90TFI020
S29GL512N90TFI020
AMD 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

56

90 ns

33554432 words

32000000

85 °C

-40 °C

PLASTIC/EPOXY

TSSOP

TSSOP56,.8,20

RECTANGULAR

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

Transferred

ADVANCED MICRO DEVICES INC

TSSOP, TSSOP56,.8,20

EAR99

NOR型号

8542.32.00.51

DUAL

鸥翼

0.5 mm

unknown

R-PDSO-G56

不合格

INDUSTRIAL

0.07 mA

32MX16

16

0.000005 A

536870912 bit

PARALLEL

FLASH

8

YES

YES

YES

512

128K

8/16 words

YES

YES

EN25S32A-104RIP2S
EN25S32A-104RIP2S
Elite Semiconductor Memory Technology Inc 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

8

VSOP-8

104 MHz

4194304 words

4000000

85 °C

-40 °C

PLASTIC/EPOXY

VSOP

SOP8,.25

SQUARE

SMALL OUTLINE, VERY THIN PROFILE

1.8 V

接触制造商

ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC

EAR99

NOR型号

8542.32.00.51

DUAL

鸥翼

未说明

1

1.27 mm

unknown

未说明

S-PDSO-G8

1.95 V

INDUSTRIAL

1.65 V

SYNCHRONOUS

0.03 mA

4MX8

3-STATE

1 mm

8

0.00001 A

33554432 bit

SERIAL

FLASH

1.8 V

SPI

100000 Write/Erase Cycles

20

HARDWARE/SOFTWARE

1

5.28 mm

5.28 mm

AM27S43DMB
AM27S43DMB
AMD 数据表

N/A

-

最小起订量: 1

最小包装量: 1

NO

24

DIP, DIP24,.6

30 ns

4096 words

2000

125 °C

-55 °C

CERAMIC

DIP

DIP24,.6

RECTANGULAR

IN-LINE

5 V

Obsolete

ADVANCED MICRO DEVICES INC

e0

EAR99

Tin/Lead (Sn/Pb)

8542.32.00.71

DUAL

THROUGH-HOLE

1

2.54 mm

compliant

R-XDIP-T24

不合格

5.5 V

MILITARY

4.5 V

ASYNCHRONOUS

0.185 mA

2KX8

8

16384 bit

MIL-STD-883 Class B (Modified)

PARALLEL

OTP ROM

PM25LD256C-DCE
PM25LD256C-DCE
Integrated Silicon Solution Inc 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

8

32768 words

32000

105 °C

-40 °C

PLASTIC/EPOXY

HTSSOP

TSSOP8,.25

RECTANGULAR

SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH

活跃

INTEGRATED SILICON SOLUTION INC

HTSSOP, TSSOP8,.25

100 MHz

EAR99

NOR型号

8542.32.00.51

DUAL

鸥翼

1

0.65 mm

compliant

R-PDSO-G8

不合格

3.6 V

INDUSTRIAL

2.7 V

SYNCHRONOUS

0.003 mA

32KX8

1.2 mm

8

0.00001 A

262144 bit

SERIAL

FLASH

2.7 V

SPI

200000 Write/Erase Cycles

20

HARDWARE/SOFTWARE

4.4 mm

3 mm

SFUI4096K1AB1TO-I-GS-2AP-STD
SFUI4096K1AB1TO-I-GS-2AP-STD
Swissbit 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Module

Tray

Swissbit

-

Obsolete

FLASH - NAND (MLC)

U-45

100.0000 ppm/°C

909 Ohm

0.5 W

Industrial

4GB

1

6.1

SQR-SD3I2G1K6INCCE
SQR-SD3I2G1K6INCCE
Advantech 数据表

N/A

-

最小起订量: 1

最小包装量: 1

204-SODIMM

Advantech

Advantech Corp

Bulk

1333

活跃

DDR3 SDRAM

1

Advantech

SQR-SD3I

Memory & Data Storage

CAN/SCI/SPI

2GB

128 KB

16 Bit

内存模块

内存模块

EN25QH64-104HIP
EN25QH64-104HIP
Elite Semiconductor Memory Technology Inc 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

8

104 MHz

8388608 words

7.85

8000000

85 °C

-40 °C

PLASTIC/EPOXY

SOP

SQUARE

小概要

3 V

生命周期结束

ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC

42*28*23.5/2000

SOP,

EAR99

8542.32.00.51

DUAL

鸥翼

未说明

1

1.27 mm

unknown

未说明

S-PDSO-G8

3.6 V

INDUSTRIAL

2.7 V

SYNCHRONOUS

8MX8

2.2 mm

8

67108864 bit

SERIAL

FLASH

2.7 V

5.275 mm

5.275 mm

AM29F032B-75EC
AM29F032B-75EC
Spansion 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

40

overload protection, load turn-on delay of at least 30 ms

90-132/180-264 (AC), 50 Hz V

1500 (50 Hz, 1 min.) V

SPANSION INC

TSOP1

836.00

MO-142CD, TSOP-40

70 ns

4194304 words

4000000

10 A

240 W

70 °C

PLASTIC/EPOXY

TSSOP

TSSOP40,.8,20

RECTANGULAR

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

5 V

load +24 (DC) with ±10 % regulation V

switch-on pulse - 25 A (115 V); 50 A (230 V) A

150 mV

53.5*33.5*26/25

Obsolete

e0

3A991.B.1.A

screw terminals

NOR型号

锡铅

8542.32.00.51

DUAL

鸥翼

260

1

0.5 mm

215 mm

not_compliant

40

R-PDSO-G40

不合格

81.5 %

5.25 V

COMMERCIAL

4.75 V

≥100 (at Uins.dc=500 V) MΩ

ASYNCHRONOUS

0.06 mA

4MX8

1.2 mm

8

-10…+50 °C

0.000005 A

33554432 bit

PARALLEL

FLASH

5 V

YES

YES

YES

64

64K

YES

3

built-in fan

SKS series switching power supply

50 mm

18.4 mm

10 mm

F59L1G81LA-25TIG2Y
F59L1G81LA-25TIG2Y
Elite Semiconductor Memory Technology Inc 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

48

128000000

85 °C

-40 °C

PLASTIC/EPOXY

TSOP1

RECTANGULAR

SMALL OUTLINE, THIN PROFILE

3.3 V

活跃

ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC

TSOP1,

134217728 words

EAR99

8542.32.00.51

DUAL

鸥翼

1

0.5 mm

unknown

R-PDSO-G48

3.6 V

INDUSTRIAL

2.7 V

ASYNCHRONOUS

128MX8

1.2 mm

8

1073741824 bit

PARALLEL

FLASH

3.3 V

18.4 mm

12 mm

SST49LF020A-33-4C-NHE
SST49LF020A-33-4C-NHE
Silicon Storage Technology 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

32

QFJ

ROHS COMPLIANT, PLASTIC, MS-016AE, LCC-32

120 ns

262144 words

256000

85 °C

PLASTIC/EPOXY

QCCJ

LDCC32,.5X.6

RECTANGULAR

CHIP CARRIER

3.3 V

Transferred

SILICON STORAGE TECHNOLOGY INC

e3

EAR99

NOR型号

哑光锡

8542.32.00.51

QUAD

J BEND

260

1

1.27 mm

unknown

32

R-PQCC-J32

不合格

3.6 V

OTHER

3 V

ASYNCHRONOUS

0.024 mA

256KX8

3.556 mm

8

0.0001 A

2097152 bit

PARALLEL

FLASH

3 V

YES

YES

YES

64

4K

TOP

13.97 mm

11.43 mm

M29DW127G70NF6E
M29DW127G70NF6E
Numonyx Memory Solutions 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

64

SEMIPACK3

screw

70 ns

8388608 words

150mA

410 g

8000000

85 °C

9.5kA

1.45V

1.8kV

-40 °C

screw

PLASTIC/EPOXY

BGA

BGA64,8X8,40

SQUARE

网格排列

Transferred

NUMONYX

double series

BGA, BGA64,8X8,40

diode-thyristor

EAR99

NOR型号

8542.32.00.51

BOTTOM

BALL

1 mm

unknown

S-PBGA-B64

不合格

INDUSTRIAL

0.015 mA

8MX16

16

0.0001 A

134217728 bit

PARALLEL

FLASH

320A

8

YES

YES

YES

8,62

64K,256K

8/16 words

YES

BOTTOM/TOP

YES

NAND512W3A2DZA6E
NAND512W3A2DZA6E
Numonyx Memory Solutions 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

63

54.6mm

85mm

38.6mm

-40 °C

EMI/RFI shielding,

PLASTIC/EPOXY

AW

designed for electronic circuits sensitive to electromagnetic interferences

TFBGA

BGA63,10X12,32

RECTANGULAR

GRID ARRAY, THIN PROFILE, FINE PITCH

12000 ns

8.50 X 15 MM, 1 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLIANT, VFBGA-63

BGA

NUMONYX

Obsolete

See

with fixing lugs

aluminium

3 V

67108864 words

64000000

85 °C

shielding

EAR99

SLC NAND类型

8542.32.00.51

BOTTOM

BALL

未说明

1

0.8 mm

unknown

未说明

63

R-PBGA-B63

不合格

3.6 V

INDUSTRIAL

2.7 V

ASYNCHRONOUS

0.03 mA

64MX8

1.05 mm

8

0.00005 A

536870912 bit

PARALLEL

FLASH

3 V

NO

NO

YES

4K

16K

512 words

YES

IP68

11 mm

9 mm

AT45DB021E-SSHN-T
AT45DB021E-SSHN-T
Atmel Corporation 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

8

70 MHz

2097152 words

2000000

85 °C

-40 °C

PLASTIC/EPOXY

SOP

RECTANGULAR

小概要

1.8 V

Transferred

ATMEL CORP

SOIC

0.150 INCH, GREEN, PLASTIC, MS-012AA, SOIC-8

e4

EAR99

NOR型号

镍钯金

8542.32.00.51

DUAL

鸥翼

1

1.27 mm

compliant

8

R-PDSO-G8

3.6 V

INDUSTRIAL

1.65 V

SYNCHRONOUS

2MX1

1.75 mm

1

2097152 bit

SERIAL

FLASH

2.7 V

4.925 mm

3.9 mm

AT45DB041E-SSHN-T
AT45DB041E-SSHN-T
Atmel Corporation 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

8

SOIC

0.150 INCH, GREEN, PLASTIC, MS-012AA, SOIC-8

70 MHz

4194304 words

4000000

85 °C

-40 °C

PLASTIC/EPOXY

SOP

SOP8,.25

RECTANGULAR

小概要

3 V

Transferred

ATMEL CORP

e4

EAR99

NOR型号

镍钯金

8542.32.00.51

DUAL

鸥翼

1

1.27 mm

compliant

8

R-PDSO-G8

不合格

3.6 V

INDUSTRIAL

1.65 V

SYNCHRONOUS

0.026 mA

4MX1

1.75 mm

1

0.00001 A

4194304 bit

SERIAL

FLASH

2.7 V

SPI

100000 Write/Erase Cycles

20

HARDWARE/SOFTWARE

4.925 mm

3.9 mm

M29W128GL70ZA6E
M29W128GL70ZA6E
Numonyx Memory Solutions 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

64

BGA

TBGA, BGA64,8X8,40

70 ns

8388608 words

8000000

85 °C

-40 °C

PLASTIC/EPOXY

TBGA

BGA64,8X8,40

RECTANGULAR

GRID ARRAY, THIN PROFILE

3 V

Transferred

NUMONYX

EAR99

NOR型号

8542.32.00.51

BOTTOM

BALL

未说明

1

1 mm

unknown

未说明

64

R-PBGA-B64

不合格

3.6 V

INDUSTRIAL

2.7 V

ASYNCHRONOUS

0.02 mA

8MX16

1.2 mm

16

0.0001 A

134217728 bit

PARALLEL

FLASH

3 V

8

YES

YES

YES

128

128K

8/16 words

YES

YES

13 mm

10 mm

AT45DB321E-MHF-Y
AT45DB321E-MHF-Y
Dialog Semiconductor GmbH 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

Polyolefin

8

33554432 words

32000000

8.80

85 °C

-40 °C

PLASTIC/EPOXY

HVSON

SOLCC8,.25

RECTANGULAR

SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE

3 V

Transferred

DIALOG SEMICONDUCTOR GMBH

3.0 mm

6.0 mm

+80...+120 °C

0.53 mm

70 MHz

105*20*16/500

e4

Трубка термоусадочная неподдерживающая горение

镍钯金

Blue

DUAL

无铅

1

1.27 mm

compliant

R-PDSO-N8

不合格

3.6 V

INDUSTRIAL

2.3 V

SYNCHRONOUS

0.022 mA

32MX1

0.6 mm

1

-55...+125 °C

0.000001 A

33554432 bit

SERIAL

FLASH

2.7 V

2 : 1

SPI

100000 Write/Erase Cycles

20

HARDWARE/SOFTWARE

1

600 V

1 m

5 mm

M29F400FB55N3E2
M29F400FB55N3E2
Numonyx Memory Solutions 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

48

TSOP1

12 X 20 MM, ROHS COMPLIANT, PLASTIC, TSOP1-48

55 ns

262144 words

256000

125 °C

-40 °C

PLASTIC/EPOXY

TSOP1

TSSOP48,.8,20

RECTANGULAR

SMALL OUTLINE, THIN PROFILE

5 V

Transferred

NUMONYX

EAR99

NOR型号

底部启动区块

8542.32.00.51

DUAL

鸥翼

未说明

1

0.5 mm

unknown

未说明

48

R-PDSO-G48

不合格

5.5 V

AUTOMOTIVE

4.5 V

ASYNCHRONOUS

0.03 mA

256KX16

1.2 mm

16

0.00012 A

4194304 bit

AEC-Q100

PARALLEL

FLASH

5 V

8

YES

YES

YES

1,2,1,7

16K,8K,32K,64K

YES

BOTTOM

YES

18.4 mm

12 mm

NAND01GW3B2CZA6
NAND01GW3B2CZA6
Numonyx Memory Solutions 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

63

35 ns

134217728 words

128000000

85 °C

-40 °C

PLASTIC/EPOXY

TFBGA

RECTANGULAR

GRID ARRAY, THIN PROFILE, FINE PITCH

3 V

Transferred

NUMONYX

BGA

TFBGA,

e0

EAR99

锡铅

8542.32.00.51

BOTTOM

BALL

未说明

1

0.8 mm

unknown

未说明

63

R-PBGA-B63

不合格

3.6 V

INDUSTRIAL

2.7 V

ASYNCHRONOUS

128MX8

1.05 mm

8

1073741824 bit

PARALLEL

FLASH

3 V

12 mm

9.5 mm

F50L1G41LB-104YG2M
F50L1G41LB-104YG2M
Elite Semiconductor Memory Technology Inc 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

8

2017-08-18

134217728 words

128000000

11

285.00

1…3 min

70 °C

UNSPECIFIED

HVSON

SOLCC8,.3

220V, 50Hzmin

RECTANGULAR

SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE

3.3 V

接触制造商

ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC

,

104 MHz

48*31.5*27/20

Blister

EAR99

SLC NAND类型

8542.32.00.51

DUAL

无铅

未说明

1

1.27 mm

unknown

未说明

R-XDSO-N8

3.6 V

2.7 V

SYNCHRONOUS

0.02 mA

128MX8

3-STATE

0.8 mm

8

0.00005 A

1073741824 bit

SERIAL

FLASH

3.3 V

SPI

100000 Write/Erase Cycles

100W

10

HARDWARE/SOFTWARE

1

8 mm

6 mm

EN25QH16A-104GIP
EN25QH16A-104GIP
Elite Semiconductor Memory Technology Inc 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

nickel-plated brass

8

2000 (50 Hz / 5 s) V

2097152 words

2000000

33.40

ring - cone; key cover

85 °C

-40 °C

PLASTIC/EPOXY

SOP

19 mm

RECTANGULAR

小概要

3 V

IP65

250 V

Obsolete

ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC

SOP,

45...85 %

≥50000

ON-ON - 2 positions with 1NO1NC fixation

104 MHz

62*27.5*28/200

EAR99

NOR型号

8542.32.00.51

DUAL

鸥翼

未说明

1

1.27 mm

unknown

未说明

R-PDSO-G8

3.6 V

≤50 mΩ

INDUSTRIAL

2.7 V

≥1000 MΩ

SYNCHRONOUS

LAS1 AGQ-Y series vandal-resistant key switch

2MX8

1.75 mm

8

-25…+55 °C

5 A

16777216 bit

SERIAL

FLASH

2.7 V

BOTTOM/TOP

3Pin

22 mm

4.9 mm

3.9 mm

AT45DB021E-SHN-T
AT45DB021E-SHN-T
Atmel Corporation 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

nickel-plated brass

8

2000 (50 Hz / 5 s) V

ATMEL CORP

SOIC

0.208 INCH, GREEN, PLASTIC, EIAJ, SOIC-8

21.20

ring - cone; flat button

70 MHz

greemin

12 V

"ON" pictogram

≥40000 hours

2097152 words

2000000

85 °C

19 mm

-40 °C

≥50000

PLASTIC/EPOXY

SOP

RECTANGULAR

小概要

1.8 V

IP65

250 V

Transferred

45...85 %

ON-(ON) without locking

27.5*27*19/100

e4

EAR99

NOR型号

镍钯金

8542.32.00.51

DUAL

鸥翼

1

1.27 mm

compliant

8

R-PDSO-G8

3.6 V

≤50 mΩ

INDUSTRIAL

1.65 V

≥1000 MΩ

SYNCHRONOUS

Vandal resistant pushbutton switch LAS1-AGQ series with illumination

2MX1

2.16 mm

1

-25…+55 °C

5 A

2097152 bit

SERIAL

FLASH

2.7 V

3Pin+2Pin

22 mm

5.29 mm

5.24 mm

AT25SF321-SHD-T
AT25SF321-SHD-T
Dialog Semiconductor GmbH 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Transferred

DIALOG SEMICONDUCTOR GMBH

compliant

FLASH

THGBMNG5D1LBAIT
THGBMNG5D1LBAIT
Toshiba America Electronic Components 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

polyethylene

153

with a red stripe

2019-01-21

1.25

-25 °C

PLASTIC/EPOXY

BGA

RECTANGULAR

网格排列

Transferred

TOSHIBA CORP

WFBGA-153

4294967296 words

4000000000

48*31.5*22/15000

100 mm

85 °C

EAR99

PE bag with zip lock

transparent

8542.32.00.51

BOTTOM

BALL

1

unknown

R-PBGA-B153

3.6 V

OTHER

2.7 V

ASYNCHRONOUS

4GX8

8

34359738368 bit

SERIAL

FLASH

2.7 V

zip-lock

100 mm

45 μm

S29AL032D90TFI040
S29AL032D90TFI040
Infineon Technologies AG 数据表

N/A

-

最小起订量: 1

最小包装量: 1

YES

48

2097152 words

2000000

85 °C

-40 °C

PLASTIC/EPOXY

TSSOP

TSSOP48,.8,20

RECTANGULAR

SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

3 V

不推荐

INFINEON TECHNOLOGIES AG

TSOP-48

90 ns

NOR型号

DUAL

鸥翼

1

0.5 mm

compliant

R-PDSO-G48

3.6 V

2.7 V

ASYNCHRONOUS

0.035 mA

2MX16

3-STATE

1.2 mm

16

0.000005 A

33554432 bit

PARALLEL

FLASH

3 V

1000000 Write/Erase Cycles

0.00009 ms

20

8

YES

YES

YES

8,63

8K,64K

YES

BOTTOM

YES

18.4 mm

12 mm