L8957

更新时间： 2023-12-18 00:00:00

品牌	Logo	应用领域
HAMAMATSU		红外LED 光电编码器
页数	文件大小	规格书
2页	113K
描述
Low cost LED ideal for optical encoders

阅读下载

中文翻译

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

L8957 技术参数

是否Rohs认证：	符合	生命周期：	Active
Reach Compliance Code：	unknown	HTS代码：	8541.40.20.00
风险等级：	5.63	配置：	SINGLE
最大正向电流：	0.08 A	功能数量：	1
最高工作温度：	85 °C	最低工作温度：	-30 °C
光电设备类型：	INFRARED LED	标称输出功率：	2.1 mW
峰值波长：	870 nm	形状：	ROUND
尺寸：	4.65 mm	Base Number Matches：	1

L8957 数据手册

L E D

Infrared LED

L8957

Low cost LED ideal for optical encoders

L8957 is an infrared LED using a low-cost lens and available at a lower price than other products up to now.

Features

Applications

Low price

Uses low cost lens

Optical encoders

Optical switches

ꢀ Absolute maximum ratings (Ta=25 °C, unless otherwise noted)

Parameter

Reverse voltage

Symbol

Value

Unit

V^R

I^F

Forward current

Forward current reduction rate

Pulse forward current

Pulse forward current reduction rate

Power dissipation

0.67

mA/°C

I^FP

0.5

mA/°C

°C

150

Operating temperature

Storage temperature

Topr

Tstg

-30 to +85

-40 to +100

°C

ꢀ Electrical and optical characteristics (Ta=25 °C)

Parameter

Peak emission wavelength

Spectral half width

Radiant flux

Symbol

Condition

I^F=50 mA

Min.

840

Typ.

870

Max.

Unit

900

I^F=50 mA

V^R=5 V

3.4

5.8

1.6

Forward voltage

V^F

1.75

Reverse current

Spot light size *¹

Optical output *²

I^R

µA

Bw I^F=30 mA

4.5

1.0

5.0

2.0

MHz

I^F=30 mA

Cut-off frequency *³

I^F=30 mA ± 4 mAp-p

*1: Full width at half maximum, measurement distance (from the image sensor to the bottom surface of L8957s base)=10 mm

*2: Measurement distance [from the photodiode (active area: f8 mm) to the bottom surface of L8957s base]=10 mm

*3: Frequency at which the optical output drops by -3 dB from that at 100 kHz.

中文翻译

下载PDF

与L8957相关器件

型号	品牌	获取价格	描述	数据表
L8957_07	HAMAMATSU	获取价格	Low cost LED ideal for optical encoders
L8958	HAMAMATSU	获取价格	High output power: 1.5 mW,pigtail type
L8958-11	HAMAMATSU	获取价格	High output power: 1.5 mW,pigtail type
L8958-11FC	ETC	获取价格	Optoelectronic
L8958-11LC	ETC	获取价格	Optoelectronic
L8958-11MU	ETC	获取价格	Optoelectronic
L8958-11SC	ETC	获取价格	Optoelectronic
L8958-12	HAMAMATSU	获取价格	High output power: 1.5 mW,pigtail type
L8958-12FC	ETC	获取价格	Optoelectronic
L8958-12LC	ETC	获取价格	Optoelectronic