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PW-7资料

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General Purpose PowerWirewound Resistors

PW Series

•2 watts to 25 watts

•0.10 ohms to 30K ohms

•±10% or ±5% tolerance

•TC’s from 300 ppm/°C to +5500 ppm/°C

General NoteWelwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

© Welwyn Components Limited· Bedlington, Northumberland NE22 7AA, UKTelephone: +44 (0)1670 822181 · Facsimile: +44 (0)1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

111PW-2PW-3PW-5PW-7PW-10PW-15PW-18PW-22PW-25

Power rating at 25°Cwatts23571015182225

Resistance rangeohms0R15 to 2K40R1 to 7K50R1 to 8K50R1 to 18K0R18 to 30K0R18 to 30K0R18 to 22K0R27 to 18K0R27 to 18K

Temperature coefficient0.06%/°C0.15 to 0.990.1 to 0.990.1 to 0.990.1 to 0.990.18 to 0.990.18 to 0.990.18 to 0.990.27 to 1.30.27 to 1.3

over R range0.03%/°C1.0 to 2.4K1.0 to 7.5K1.0 to 8.5K1.0 to 18K1.0 to 30K1.0 to 30K1.0 to 22K1.5 to 12K1.5 to 10K

+0.55%/°C0.1 to 300.1 to 860.1 to 680.1 to 1500.1 to 2400.1 to 2400.1 to 2000.15 to 3600.15 to 300

+0.45%/°C0.24 to 1300.1 to 2700.1 to 3000.15 to 6800.24 to 11000.24 to 11000.24 to 11000.36 to 18000.36 to 1200

+0.25%/°C1.0 to 100.24 to 200.27 to 221.0 to 511.0 to 821.0 to 821.0 to 701.0 to 1201.5 to 100Electrical Data

Physical Data

Issue B · 03.02A subsidiary of TTelectronics plcWelwyn Components

Please note: When ordering the alternative configuration please add an ‘A’ after the part number. (i.e., PW-2A)

Dimensions (mm)

L ±0.8W ±0.8H ±0.8d dia.E ±0.8LL min.F (ref.)

PW-217.56.356.350.87.8736.61.60

PW-322.47.877.870.919.6536.61.60

PW-522.49.658.640.9110.438.11.60

PW-735.39.658.640.9111.938.13.18

PW-1047.89.658.640.9111.938.13.18

PW-1547.812.712.70.9116.038.13.18

PW-1847.812.712.70.9116.038.13.18

PW-2263.512.712.71.0*16.038.13.18

PW-2563.512.712.71.0*16.038.13.18

* Copper Clad Steel

L0.125 max.dW

H

LLE

FStandard ConfigurationAlternate Configuration元器件交易网www.cecb2b.com

General Purpose Power

Wirewound ResistorsPW Series

© Welwyn Components LimitedBedlington, Northumberland NE22 7AA, UKTelephone: +44 (0)1670 822181 · Facsimile: +44 (0)1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

112

Issue B · 03.02Welwyn Components

100

80

60

40

20

0050100150200250Ambient Temperature (°C)Percent of Rated Load254085

PW-2

PW-3, 5, 7, 10

PW-15, 18, 22, 25300

250

200

150

100

50

0020406080100120Temperature Rise (°C)

Percent of Rated LoadPW-22, 25

PW-15, 18PW-10PW-7PW-5PW-3Power DeratingTemperature Rise

Packaging

Resistors are supplied bulk packed. Quantity 500.元器件交易网www.cecb2b.com

General Purpose PowerWirewound Resistors

PW Series

•20 watts to 50 watts

•0.10 ohms to 2.0K ohms

•±10% or ±5% tolerance

•Customs

General NoteWelwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

© Welwyn Components Limited· Bedlington, Northumberland NE22 7AA, UKTelephone: +44 (0)1670 822181 · Facsimile: +44 (0)1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

113PW-20EPW-30PW-40PW-50EPower rating at 25°Cwatts20304050Resistance rangeohms0R1 to 2K0R5 to 1K20R65 to 1K50R08 to 1K8Electrical Data

Issue B · 03.02A subsidiary of TTelectronics plcWelwyn Components

Please note: When ordering the alternative configuration please add an ‘A’ after the part number. (i.e., PW-2A)

0.032±0.0025

0.205 or 0.187±0.0050.157±0.0200.250 (Typ.)

0.5±0.030

0.5±0.0305/32 Dia. Thru (2)A

0.069±0.005

0.25±0.0310.032±0.0025

0.375

0.200 (Typ.)

0.135±0.0150.25

0.750.282±0.020

0.75±0.030

0.75±0.0300.8755/32 Dia. Thru (2)

A

B

0.125±0.015PW-20E WirewoundPW-30, 40 and 50E Wirewound

PW-20E Alternate Terminal ConfigurationPrinted Circuit TerminalDimensions (Inches)A ±0.030B ±0.060 PW-20E1.8752.50PW-302.002.55PW-402.453.00PW-50E3.0753.625

2.000±0.040

0.187±0.0101.410±0.040

1.050 Min.0.060 Dia. (2)0.500±0.030

0.500±0.0300.840±0.0400.250 min.0.020PW-15E100

80

60

40

20

0050100150200250Ambient Temperature (°C)Percent of Rated LoadPW-20E, PW-30, PW-40PW-50E without bracket

300

250

200

150

100

50

00255075100125Temperature Rise (°C)

Percent of Rated LoadPW-30PW-40PW-50E

PW-20EWith Bracket:PW-30 Increased to 40 wattsPW-40 Increased to 50 wattsPW-50 Increased to 60 wattsPower Derating

Temperature Rise元器件交易网www.cecb2b.com

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彩色多普勒超声诊断仪参数及要求

彩色多普勒超声诊断仪参数及要求

彩色多普勒超声诊断仪

参数及要求

1. 货物名称：

全数字高档彩色多普勒超声诊断仪

2. 用途说明：

2.1. 腹部、产科、妇科、心脏、小器官、泌尿、血管、儿科、急诊、麻醉、其它

3. ★货物要求：

3.1. 为保证产品的稳定性，产品需经过一定时间市场考验，投标型号需上市销售超过3年（以首次注册证为准）。

4. 货物数量：壹套 5. 交货期限：合同签订后20天

6. 系统技术规格及概述：

6.1. 全数字化彩色多普勒超声诊断系统主机

6.2. 超声主机具有抽拉式PC键盘、操作面板可左右旋转，上下升降

6.3. 显示器具有多关机臂，可前后、左右、上下大范围活动（提供证明图片）

6.4. 数字波束增强器

6.5. 多倍波束合成

6.6. 二维灰阶模式

6.7. 保真成像技术

6.8. 融合谐波成像技术

6.9. M型模式

6.10. 解剖M型模式

6.11. ★彩色M型（支持所有探头）

6.12. 多普勒成像（包括彩色、能量、方向能量多普勒模式）

6.13. 频谱多普勒成像（包括脉冲多普勒、高脉冲重复频率、连续波多普勒）

6.14. 组织多普勒成像

6.15. 支持四维成像

6.16. ★标配弹性成像

6.17. 融合宽景成像

6.18. 空间复合成像

6.19. ★扩展成像（要求凸阵、线阵、腔内、容积探头均可用）

6.20. 实时双幅对比成像

6.21. 实时三同步成像（二维、彩色、频谱实时同步成像）

6.22. 血流速度标示成像：可以用绿色定量地标识某一或一定速度范围的血流分布，使得超声临床工作者可以准确区分血流的边界与性质，区别正常与异常血流（提供证明图片）

6.23. 斑点噪声抑制技术

6.24. 可配置造影成像功能

7. 系统技术参数及要求

7.1. ≥19寸高分辨率宽屏彩色液晶显示器

7.2. ≥10寸高灵敏度防反光彩色触摸屏

7.3. ★操作面板简洁，操作简单，按键数≤25个（提供实机面板照片）

二极管代换手册

二极管代换手册

1页 型号 材料 外形 用途 极限工作电压Vrwm（V） 极限工作电流Im（A） 耗散功率Pw（W） 最高工作频率fm（Hz） 国内外相似型号

1N100 Ge 7 普通用途, 80 30m 1N4447

1N100A Ge 14 普通用途, 80 70m 1N4448

1N102 Ge 7 普通用途, 125 15m 1N3070

1N1028 Si 47 整流, 20 500m A14F

1N1029 Si 47 整流, 100 V A14A

1N103 Ge 7 普通用途, 20 30m 1N4448

1N1030 Si 47 整流, 150 500m 1N5059

1N1031 Si 47 整流, 200 500m 1N5059

1N1032 Si 47 整流, 300 500m A14C,30C

1N1033 Si 47 整流, 400 500m 1N5060

1N1034 Si SP 整流, 50 1 A14F

1N1035 Si SP 整流, 100 1 A14A

1N1036 Si SP 整流, 150 1 1N5090

1N1037 Si SP 整流, 200 1 1N5090

1N1038 Si SP 整流, 300 1 A14C

1N1039 Si SP 整流, 400 1 1N5060

1N104 Ge 7 普通用途, 25 30m 1N4448

1N1040 Si SP 整流, 50 1 A14F

1N1041 Si SP 整流, 100 1 A14F

1N1042 Si SP 整流, 150 1 1N5090

1N1043 Si SP 整流, 200 1 1N5090

ASA(PW-957) 抗UV材料属性表格

ASA(PW-957) 抗UV材料属性表格

No. 59-1, SAN CHIA, JEN TE DISTRICT, TAINAN CITY, TAIWAN

TEL: +886-6-266-5000 FAX:+886-6-266-5555~7

The above statement is based on our current level of knowledge and covers the above products directly manufactured and supplied by CHI MEI CORPORATION at the date of issue. CHI MEI CORPORA

TION makes no warranties, whether express or implied, and assumes no liability in connection with any use of above information. Notwithstanding the foregoing, CHI MEI CORPORATION shall in no event be held obligated or liable for any claims due to or arising from (i) any customer provided, consigned, materials and/or parts, which are incorporated or adopted in the products; (ii) any combination of the products with material not provided or authorized by our company; (iii) any modifications to the products which are made or directed by customer; (iv) our compliance with the specifications, instructions, and/or designs provided by customer; (v)

PW-7资料

PW-7资料

General Purpose PowerWirewound Resistors

PW Series

•2 watts to 25 watts

•0.10 ohms to 30K ohms

•±10% or ±5% tolerance

•TC’s from 300 ppm/°C to +5500 ppm/°C

General NoteWelwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

© Welwyn Components Limited· Bedlington, Northumberland NE22 7AA, UKTelephone: +44 (0)1670 822181 · Facsimile: +44 (0)1670 829465 · Email: info@ · Website:

111PW-2PW-3PW-5PW-7PW-10PW-15PW-18PW-22PW-25

Power rating at 25°Cwatts23571015182225

Resistance rangeohms0R15 to 2K40R1 to 7K50R1 to 8K50R1 to 18K0R18 to 30K0R18 to 30K0R18 to 22K0R27 to 18K0R27 to 18K

Temperature coefficient0.06%/°C0.15 to 0.990.1 to 0.990.1 to 0.990.1 to 0.990.18 to 0.990.18 to 0.990.18 to 0.990.27 to 1.30.27 to 1.3