Osram To-39 Metal Can Silicon Differential Photodiode SFH221

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Product Description:

1 Samples offer 
2 Trade reference for quality confirm 
3 60 days warranty 
4 Large stock 
5 High reputation 



SFH 221


SFH 221, Lead (Pb) Free

Product Photossfh 221
Catalog DrawingsSFH221 Side
Standard Package40
CategorySensors, Transducers
Color - Enhanced-
Spectral Range400nm ~ 1100nm
Diode Type-
Responsivity @ nm0.55 A/W @ 900nm
Response Time500ns
Voltage - DC Reverse (Vr) (Max)10V
Current - Dark (Typ)10nA
Active Area2.2mm x 0.7mm
Viewing Angle110°
Operating Temperature-40°C ~ 125°C
Package / CaseTO-39-4 Metal Can
Other Names475-1431






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1. We will arrange the delivery as soon as receiving your payment.

2. The goods will be deliveried by UPS/DHL/TNT/EMS/Fedex.Also, you can find your own forwarder.

3.All the prices are FOBShenzhen, freight will be paid by buyers.



Refund & Replacement:

1.We provide 60 days quality warrantly, Samples have no refund.

2.If the items are defective, please let me know as soon as you receive the goods.

3.All the items must be returned in original condition if there is a replacement or refund.

4.The buyer is responsible for all the shipping cost incurred.


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Q:Is the fuse the same as the fuse?
Fuses and fuses are the same principle, but the name is not the same, the product shape is not the same, the voltage level current specifications are not the same, the products are the first foreign fuses and domestic 60 years imitation fuse.
Q:What is the working principle of the fuse
with its own heat generated by the melt melt,
Q:When using low-voltage fuses, note that
fuse should be installed vertically to ensure that the socket and the knife holder in close contact,
Q:Why the fuse resistance is large
A fuse is also known as a current fuse, and the IEC127 standard defines it as a "fuse-link". It is mainly due to overload protection.
Q:Why is the fuse broken
There is a short circuit in the circuit, resulting in short circuit current, short circuit current is too large fuse fuse
Q:What is the significance of the voltage on the fuse?
The rated voltage of the fuse is the maximum voltage that can be tolerated when the fuse is disconnected, and the voltage at both ends of the fuse is far less than its rated voltage
Q:What are the characteristics of the fuse?
The rated current of the melt is selected according to the load current of the protected equipment
Q:Fuse tube selection fuse factor
In general, the fuse resistance is inversely proportional to its rated current value. In the protection circuit requires the fuse the smaller the better resistance, so that its loss of power is also small.
Q:Fuse always burn ! Is the line short circuit yet?
But it is best to find the electrician to help replace the appropriate fuse, the fuse is too thick too thick, are not conducive to the protection of home appliances and power.
Q:The choice of fuse tube can be based on the following process
pulse (impact current, surge current, starting current and current transient value) on the life of the fuse tube
We insist on the principle of "Service Supremacy, Quality Primacy" to provide high quality products and best service for the society. After several years' development, we have formed a certain scale in the production of exhaust fans. At present, our mainly products exhaust fans are used in graziery and gardening, cooling pad, automatic oil-burning heating machine, automatic coal-burning heating machine and electric blower fields.

1. Manufacturer Overview

Location Shenzhen, China (Mainland)
Year Established 2007
Annual Output Value US$5 Million - US$10 Million
Main Markets North America; South America; Eastern Europe; Southeast Asia; Africa; Oceania; Mid East; Eastern Asia; Western Europe; Central America; Northern Europe; Southern Europe; South Asia; Domestic Market
Company Certifications ISO 9001:2000

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3. Manufacturer Capability

a)Trade Capacity  
Nearest Port HongKong, Shenzhen
Export Percentage 41% - 50%
No.of Employees in Trade Department 21-50 People
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b)Factory Information  
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