对比

图片

产品型号

品牌

数据表

库存

价格(含增值税)

数量

Rohs

工厂交货时间

生命周期状态

触点镀层

安装类型

包装/外壳

越来越多的功能

触点形状

外壳材料

供应商器件包装

材料

房屋材料

插入材料

PCB安装方向

PCB安装固定

厂商

操作温度

包装

系列

尺寸/尺寸

容差

JESD-609代码

无铅代码

终止次数

终端

ECCN 代码

温度系数

连接器类型

类型

电阻

定位的数量

最高工作温度

最小工作温度

组成

颜色

应用

行数

性别

功率(瓦特)

附加功能

HTS代码

紧固类型

子类别

符合 DIN 标准

IEC一致性

过滤功能

触点类型

混合接触

选项

螺距

方向

屏蔽/屏蔽

入口保护

端子间距

样式

Reach合规守则

额定电流

军用标准

外壳完成

参考标准

外壳尺寸-插入

终端样式

功能

输出的数量

可靠性

PCB行数

接头数量

PCB接触图案

配套信息

本体宽度

UL可燃性规范

电压 - 输入(最大值)

房屋颜色

输出类型

引线长度

本体深度

电压 - 输入(最小值)

失败率

额定电流(信号)

触点样式

绝缘电阻

行间距

注意

配套触点间距

主体/外壳样式

电压

弱电

终端类型

镀层

介电耐压

输出配置

外壳尺寸,MIL

PCB 触点行距

输出电流

触点表面处理 终端

触点图案

输出功率

触点额定电流

配套接点行距

电压 - 输出(最小值/固定)

拓扑

绝缘子颜色

频率开关

电流-输出1

同步整流器

配套立柱长度

产品类别

包括

第一个连接器

第二个连接器

电压 - 输出(最大值)

隔离电压

可堆叠

产品

安装角

特征

端子长度

产品类别

产品长度

直径

高度

座位高度(最大)

长度

宽度

电镀厚度

触点表面处理厚度 - 配套

叠层高度

材料可燃性等级

辐射硬化

无铅

146468-3
146468-3
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 5 days ago)

Tin

表面贴装

6-UFDFN Exposed Pad

Square

6-USPC (1.8x2)

Thermoplastic

Vertical

Torex Semiconductor Ltd

TE Connectivity

TE Connectivity

AMPMODU

N

CSA

3.05 mm

Obsolete

XC9258

Tape & Reel (TR)

+ 125 C

- 65 C

507

-

-40°C ~ 105°C (TA)

Bulk

XC9258

通孔

Header, Pin, Plug

Stacker

3 Position

125 °C

-65 °C

1

Male

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

Step-Down

1

3

UL94 V-0

5.5V

Black

固定式

26.16 mm

Copper Alloy

2.5V

5 GΩ

Non-Compliant

Positive

1A

3 A

2.3V

巴克

1.2MHz

有

2.79 mm

Headers & Wire Housings

-

有

Headers

Headers & Wire Housings

20.32 mm

无

146473-4
146473-4
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

18 Weeks

Production (Last Updated: 1 week ago)

Gold

通孔

Square

Thermoplastic

Vertical

Without

105 °C

有

146473-4

1

活跃

TE CONNECTIVITY LTD

ONE

5.48

146473

AMP

+ 125 C

0.011958 oz

- 65 C

500

通孔

Copper Alloy

TE Connectivity

TE Connectivity / AMP

AMPMODU

Details

CSA

8.38 mm

未说明

0.384 inch

THERMOPLASTIC

Bulk

AMPMODU MOD II

e4

有

通孔

EAR99

Header, Pin, Plug

Unshrouded

4 Position

125 °C

-65 °C

Black

Board-to-Board

1 Row

MALE

AMPMODU

8536.69.40.40

Headers & Wire Housings

NO

NO

NO

NO

GENERAL PURPOSE

2.54 mm

Vertical

2.54 mm

compliant

3 A

NO

UL, CSA

焊针

COMMERCIAL

1

4

RECTANGULAR

NO

0.092 inch

UL94 V-0

Black

28.702 mm

-65 °C

Pin

5 GΩ

0.1 inch

RECEPTACLE

Compliant

SOLDER

Gold

750VAC V

Gold (Au) - with Nickel (Ni) barrier

RECTANGULAR

3 A

BLACK

8.38 mm

Headers & Wire Housings

有

Headers

Straight

Headers & Wire Housings

28.702 mm

15u inch

381 nm

11.94 mm

6-146484-6
6-146484-6
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Tin

Free Hanging (In-Line)

-

Circular

铝合金

Thermoplastic

Plastic

TE Connectivity Deutsch 连接器

Compliant

D38999/26WB

16

Discontinued at Digi-Key

Bulk

CSA, UL

-65°C ~ 175°C

Bulk

Military, MIL-DTL-38999 Series III, DTS

Solder

Plug Housing

用于公引脚

2

-125 °C

-65 °C

Black

2

Threaded

Crimp

2.54 mm

E

Shielded

抗环境干扰

3 A

Chromate over Cadmium

11-2

32

UL94 V-0

橄榄色

11.18 mm

2.794 mm

2.54 mm

不包括触点

Compliant

B

2.79 mm

-

联接螺母

11.176 mm

6.35 mm

-

无

5-146503-7
5-146503-7
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 5 days ago)

Gold

通孔

Axial

Square

Axial

Thermoplastic (TP)

Vertical

Without

Vishay Dale

AMPMODU

Details

CSA

2.54 mm

Tape & Reel (TR)

RWR81

活跃

+ 125 C

- 65 C

100

-

Copper Alloy

TE Connectivity

-55°C ~ 250°C

Bulk

Military, MIL-PRF-39007, RWR81S

0.085 Dia x 0.250 L (2.16mm x 6.35mm)

±1%

2

通孔

±650ppm/°C

Header, Pin, Plug

Unshrouded

143 mOhms

14 Position

125 °C

-65 °C

Wirewound

Black

2

1W

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

14

UL94 V-0

Black

31.24 mm

TE Connectivity

R (0.01%)

Pin

5 GΩ

2.54 mm

Compliant

Gold

3 A

8.38 mm

Headers & Wire Housings

有

Headers

Military, Moisture Resistant

Headers & Wire Housings

-

31.242 mm

381 nm

20.32 mm

无

7-146500-3
7-146500-3
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 5 days ago)

Gold

通孔

Square

Thermoplastic

Vertical

Without

Amphenol Custom Cable

Male

Bag

50 Ohms

Q-0J0420

活跃

Male

4 GHz

RG-316

+ 125 C

- 65 C

85

-

Copper Alloy

TE Connectivity

TE Connectivity

AMPMODU

Details

2.54 mm

CSA

-

Bulk

-

通孔

Header, Pin, Plug

Unshrouded

46 Position

125 °C

-65 °C

Copper

2

Headers & Wire Housings

2.54 mm

Vertical

-

BNC to SMP

3 A

焊针

46

UL94 V-0

Black

28.702 mm

Pin

5 GΩ

2.54 mm

Compliant

Gold

3 A

8.38 mm

Headers & Wire Housings

BNC Plug

SMP Plug, Right Angle

有

Headers

Shielded

Headers & Wire Housings

12.00 (304.80mm)

381 nm

17.78 mm

无

6-146503-6
6-146503-6
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 3 days ago)

Gold

通孔

Square

Thermoplastic

Vertical

Without

Compliant

CSA

Brass

2.54 mm

+ 125 C

- 65 C

100

-

TE Connectivity

TE Connectivity

Carton

AMPMODU MOD II

通孔

Header, Pin, Plug

Unshrouded

32

125 °C

-65 °C

Black

2

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

32

UL94 V-0

Black

31.24 mm

AMPMODU

Pin

5 GΩ

2.54 mm

Compliant

Gold

3 A

8.38 mm

Headers & Wire Housings

有

Headers

Headers & Wire Housings

31.242 mm

381 nm

20.32 mm

6-146471-2
6-146471-2
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Lead, Tin

通孔

Non-Compliant

Tape & Reel

2 %

100 ppm/°C

470 Ω

150 °C

-65 °C

Metal Film

MIL-PRF-39017

2.29 mm

7.62 mm

无

7-146462-1
7-146462-1
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 3 days ago)

Gold

通孔

Square

Thermoplastic

Vertical

Without

TE Connectivity

TE Connectivity

Copper Alloy

3.3 V

Compliant

CSA

2.77 mm

+ 125 C

- 65 C

75

-

Carton

AMPMODU MOD II

通孔

Header, Pin, Plug

Unshrouded

21

120 °C

-40 °C

Black

1

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

1

21

UL94 V-0

Black

18.77 mm

AMPMODU

Pin

5 GΩ

Compliant

Gold

66 W

3 A

20 A

8.38 mm

Headers & Wire Housings

1.5 kV

有

Headers

Headers & Wire Housings

8.8 mm

33 mm

22.9 mm

381 nm

7.62 mm

无

8-146490-1
8-146490-1
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 1 week ago)

Gold

通孔

Square

Thermoplastic

Vertical

Without

Molex

+ 125 C

- 65 C

75

-

Copper Alloy

TE Connectivity

TE Connectivity

AMPMODU

Bulk

121036

活跃

CSA

2.77 mm

Carton

*

通孔

Header, Pin, Plug

Unshrouded

62

125 °C

-65 °C

Black

2

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

62

UL94 V-0

Black

18.77 mm

Compliant

Pin

5 GΩ

2.54 mm

Compliant

Gold

3 A

8.38 mm

Headers & Wire Housings

有

Headers

Headers & Wire Housings

18.7706 mm

381 nm

7.62 mm

无

3-146496-0
3-146496-0
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

20 Weeks, 5 Days

BOARD

Non-Compliant

TIN LEAD (200) OVER NICKEL

2.984 inch

THERMOPLASTIC

-65 °C

105 °C

无

3-146496-0

STRAIGHT

2

铜合金

TE Connectivity

Obsolete

TE CONNECTIVITY LTD

ONE

5.92

e0

无

EAR99

板堆叠连接器

MALE

AMPMODU

8536.69.40.40

头部和边缘连接器

NO

NO

NO

NO

GENERAL PURPOSE

2.54 mm

compliant

NO

UL, CSA

COMMERCIAL

2

60

RECTANGULAR

0.192 inch

94V-0

0.8 inch

3 A

SQ PIN-SKT

5000000000 Ω

0.1 inch

RECEPTACLE

SOLDER

750VAC V

2.54 mm

Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier

RECTANGULAR

0.1 inch

BLACK

0.11 inch

100u inch

3-146508-6
3-146508-6
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Lead, Tin

BOARD

Thermoplastic

CSA, UL

Brass

Compliant

TIN LEAD (200) OVER NICKEL

3.584 inch

THERMOPLASTIC

-65 °C

105 °C

无

3-146508-6

STRAIGHT

2

TE Connectivity

Obsolete

TE CONNECTIVITY LTD

ONE

5.92

e0

无

通孔

EAR99

Header, Pin, Plug

72

-125 °C

-65 °C

2

MALE

AMPMODU

8536.69.40.40

头部和边缘连接器

NO

NO

NO

NO

GENERAL PURPOSE

2.54 mm

Vertical

2.54 mm

not_compliant

3 A

NO

UL, CSA

COMMERCIAL

2

72

RECTANGULAR

0.192 inch

UL94 V-0

Black

36.32 mm

1.2 inch

3 A

SQ PIN-SKT

5000000000 Ω

2.54 mm

0.1 inch

RECEPTACLE

Non-Compliant

SOLDER

750VAC V

2.54 mm

Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier

RECTANGULAR

0.1 inch

BLACK

2.79 mm

0.11 inch

100u inch

30.48 mm

3-146471-3
3-146471-3
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

BOARD

未说明

3.284 inch

THERMOPLASTIC

-65 °C

105 °C

无

3-146471-3

STRAIGHT

1

铜合金

TE Connectivity

Obsolete

TE CONNECTIVITY LTD

ONE

5.92

e0

无

EAR99

板堆叠连接器

MALE

AMPMODU

8536.69.40.40

头部和边缘连接器

NO

NO

NO

NO

GENERAL PURPOSE

2.54 mm

not_compliant

NO

UL, CSA

COMMERCIAL

1

33

RECTANGULAR

NO

0.092 inch

94V-0

SQ PIN-SKT

5000000000 Ω

0.1 inch

RECEPTACLE

SOLDER

750VAC V

Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier

RECTANGULAR

BLACK

100u inch

4-146503-0
4-146503-0
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

40 Weeks

Gold

BOARD

Thermoplastic

4-146503-0

2

活跃

TE CONNECTIVITY LTD

ONE

2.29

146503

AMP

Non-Compliant

+ 125 C

- 65 C

50

-

Copper Alloy

TE Connectivity

TE Connectivity

AMPMODU

未说明

3.984 inch

THERMOPLASTIC

-65 °C

105 °C

Bulk

AMPMODU MOD II

e0

无

EAR99

板堆叠连接器

Unshrouded

80 Position

MALE

STACKING & W/O MOUNTING EARS

8536.69.40.40

Headers & Wire Housings

NO

NO

NO

NO

GENERAL PURPOSE

2.54 mm

2.54 mm

not_compliant

3 A

NO

UL, CSA

焊针

COMMERCIAL

2

80

RECTANGULAR

0.192 inch

94V-0

Black

无

SQ PIN-SKT

5000000000 Ω

2.54 mm

0.1 inch

RECEPTACLE

SOLDER

750VAC V

2.54 mm

Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier

RECTANGULAR

0.1 inch

BLACK

8.38 mm

Headers & Wire Housings

Headers

Headers & Wire Housings

15u inch

146476-1
146476-1
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Gold

Copper Alloy Pin Contact

Square

Thermoplastic

PINREX

Y

CSA, UL

Brass

Insulation Resistance - 1000mOhm Min.

Contact Resistance - 20mOhm Max.

Header, Pin, Plug

1

-125 °C

-65 °C

2.54 mm

Vertical

UL94 V-0

Black

31.24 mm

2 Amp

Compliant

8.38 mm

14.47 mm

8-146506-2
8-146506-2
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 1 week ago)

Gold

通孔

Square

Thermoplastic

Vertical

Screw connection

IP40

Side

400

Long turning handle

CSA

Brass

2.54 mm

Compliant

+ 125 C

- 65 C

50

-

TE Connectivity

TE Connectivity

AMPMODU

Bulk

AMPMODU MOD II

通孔

Header, Pin, Plug

Unshrouded

64

125 °C

-65 °C

Black

2

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

64

UL94 V-0

Black

33.78 mm

5 GΩ

2.54 mm

Compliant

3 A

8.38 mm

Headers & Wire Housings

有

Headers

Headers & Wire Housings

33.782 mm

22.86 mm

7-146508-4
7-146508-4
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Tin

通孔

Steel

Thermoplastic

Brass

2.794 mm

Compliant

Galvanized

Bulk

Solder

Header, Pin, Plug

48

-125 °C

-65 °C

Black

2

2.54 mm

Vertical

3 A

48

UL94 V-0

Black

36.32 mm

CSA, UL

2.54 mm

Compliant

2.79 mm

205

36.322 mm

725

30.48 mm

3-829587-0
3-829587-0
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

11 Weeks, 4 Days

Gold

BOARD

Polyester

+ 105 C

Plug

0.308647 oz

- 65 C

80

通孔

TE Connectivity

TE Connectivity / AMP

AMPMODU

Details

3-829587-0

2

Obsolete

TYCO ELECTRONICS AMP

8.32

829587

AMP

Bulk

AMPMODU MOD II

EAR99

板连接器

Shrouded

60 Position

Wire-to-Board

2 Row

Pin (Male)

AMPMODU

8536.69.40.40

Headers & Wire Housings

NO

NO

NO

Pin (Male)

NO

GENERAL PURPOSE

2.54 mm

2.54 mm

unknown

NO

焊针

60

2.54 mm

SOLDER

3.2 mm

Headers & Wire Housings

Headers

Straight

Headers & Wire Housings

6-146468-8
6-146468-8
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 3 days ago)

Tin

通孔

Square

Thermoplastic

Vertical

TE Connectivity

AMPMODU

CSA

Brass

3.05 mm

Compliant

+ 125 C

- 65 C

100

-

Bulk

AMPMODU MOD II

通孔

Header, Pin, Plug

Unshrouded

18

125 °C

-65 °C

Black

1

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

18

UL94 V-0

Black

26.16 mm

TE Connectivity

5 GΩ

Compliant

3 A

2.7686 mm

Headers & Wire Housings

有

Headers

Headers & Wire Housings

26.162 mm

20.32 mm

无

6-146505-2
6-146505-2
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 3 days ago)

Tin

通孔

Square

Thermoplastic

Vertical

Without

Non-Compliant

CSA

Brass

3.05 mm

+ 125 C

- 65 C

60

-

TE Connectivity

TE Connectivity

Bulk

AMPMODU MOD II

通孔

Header, Pin, Plug

Unshrouded

24

125 °C

-65 °C

Black

2

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

24

UL94 V-0

Black

33.78 mm

AMPMODU

Pin

5 GΩ

2.54 mm

Compliant

Tin

3 A

2.7686 mm

Headers & Wire Housings

有

Headers

Headers & Wire Housings

33.782 mm

27.94 mm

6-146475-4
6-146475-4
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 5 days ago)

Gold

通孔

Square

Thermoplastic (TP)

Vertical

Without

+ 125 C

- 65 C

300

-

Copper Alloy

TE Connectivity

TE Connectivity

AMPMODU

Details

CSA

Bulk

AMPMODU MOD II

通孔

Header, Pin, Plug

Unshrouded

14 Position

125 °C

-65 °C

Black

1

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

14

UL94 V-0

Black

31.24 mm

2.54 mm

Pin

5 GΩ

Compliant

Gold

3 A

8.38 mm

Headers & Wire Housings

有

Headers

Headers & Wire Housings

31.242 mm

381 nm

20.32 mm

无

2-146487-9
2-146487-9
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

20 Weeks, 5 Days

Tin-Lead

BOARD

5.92

Straight

Solder

Thermoplastic

Copper Alloy

通孔

未说明

2.884 inch

THERMOPLASTIC

-65 °C

105 °C

无

2-146487-9

STRAIGHT

2

TE Connectivity

Obsolete

TE CONNECTIVITY LTD

-65 to 125 °C

e0

无

EAR99

板堆叠连接器

Header

UNSHROUDED

8536.69.40.40

头部和边缘连接器

NO

NO

NO

NO

GENERAL PURPOSE

2.5400 mm

2.54 mm

compliant

NO

UL, CSA

COMMERCIAL

2

58

RECTANGULAR

0.192 inch

Black

0.4 inch

ONE

3 A

SQ PIN-SKT

5000000000 Ω

0.1 inch

RECEPTACLE

SOLDER

750VAC V

2.54 mm

Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier

RECTANGULAR

0.1 inch

BLACK

0.11 inch

73.25 mm

100u inch

5-146486-6
5-146486-6
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 6 days ago)

Tin

通孔

Square

Thermoplastic

Vertical

Without

Straight

Solder

Thermoplastic

Copper Alloy

通孔

+ 125 C

- 65 C

120

-

TE Connectivity

TE Connectivity

AMPMODU

Details

CSA

3.1242 mm

-65 to 125 °C

Bulk

AMPMODU MOD II

通孔

Header, Pin, Plug

Screw Machined Terminals

12 Position

125 °C

-65 °C

Black

2

Header

Headers & Wire Housings

2.5400 mm

Vertical

3 A

焊针

12

UL94 V-0

Black

13.54 mm

Terminals Test Jacks

Pin

5 GΩ

2.54 mm

Compliant

Tin

3 A

2.79 mm

Screw Machined Terminals

有

Headers

Headers & Wire Housings

14.83 mm

13.5382 mm

7.62 mm

无

7-146503-8
7-146503-8
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 5 days ago)

Gold

通孔

Square

Thermoplastic

Vertical

Without

Compliant

CSA

+ 125 C

- 65 C

-

Copper Alloy

TE Connectivity

TE Connectivity

AMPMODU

2.54 mm

Bulk

AMPMODU MOD II

Solder

Header, Pin, Plug

Unshrouded

8

125 °C

-65 °C

Black

2

Female

Headers & Wire Housings

2.54 mm

直角

3 A

焊针

8

UL94 V-0

Black

31.24 mm

Pin

5 GΩ

2.54 mm

Compliant

Gold

3 A

8.38 mm

Headers & Wire Housings

有

Headers

Headers & Wire Housings

31.242 mm

381 nm

20.32 mm

无

含铅

8-146474-3
8-146474-3
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Tin

通孔

Square

Steel

Thermoplastic

CSA, UL

Brass

2.794 mm

Compliant

Bulk

Solder

Header, Pin, Plug

33

-125 °C

-65 °C

Black

1

2.54 mm

Vertical

33

UL94 V-0

Black

31.24 mm

Compliant

2.79 mm

31.242 mm

25.4 mm

无

6-146480-6
6-146480-6
TE Connectivity 数据表

N/A

-

最小起订量: 1

最小包装量: 1

Production (Last Updated: 3 days ago)

Tin

通孔

Square

Thermoplastic

Vertical

Without

Compliant

3.05 mm

Brass

CSA

+ 125 C

- 65 C

200

-

TE Connectivity

TE Connectivity

Bulk

AMPMODU MOD II

通孔

Header, Pin, Plug

Unshrouded

16

125 °C

-65 °C

Black

1

Headers & Wire Housings

2.54 mm

Vertical

3 A

焊针

16

UL94 V-0

Black

36.32 mm

AMPMODU

Pin

5 GΩ

Compliant

Tin

3 A

2.7686 mm

Headers & Wire Housings

有

Headers

Headers & Wire Housings

36.322 mm

30.48 mm