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:What is a closed fuse:
for the voltage level 500V below the current level of 1KA the following circuit.
Q:What parts are the fuses divided
The fuse is composed of insulation base (or support), contact, melt and so on.
Q:The main parameters of the fuse selection
The current rating indicates the current carrying capacity of the fuse under a set of test conditions
Q:Fuse tube selection fuse factor
Rated current - In fuse rated current is its nominal rated current, usually the circuit can work long-term maximum current value.
Q:What is the self-recovery fuse:
thus limiting the short-circuit current.
Q:Fuse inspection check how to do?
Check the fuse and melt rating and the protected equipment is compatible.
Q:What is a quick fuse:
Only in a very short period of time to withstand a larger overload current, so require short-circuit protection with the ability to quickly blow.
Q:Fuse fuse all the reasons
Pulse: When the circuit starts or the power supply is unstable, a momentary current causes the fuse to break
Q:The use and function of the fuse
In order to prevent the circuit current is too large and cause heat to burn, is used to protect the circuit, and its lower melting point when the current is too large when the automatic fuse, and cut off the power
Q:The difference between the fuse and the air switch
The air switch disconnects all of the power supply from the faulty circuit
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
Language Spoken:
b)Factory Information  
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No. of Production Lines
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