Remaining Europe: Vintage Transistors / Diodes Collection

BCCCVPlesseySinclairSemicsTungsramThomsonValvoVaro

This site contains my collection of vintage transistors and diodes, most of them included with their original package or sleeves. The devices are produced in the late fifties and early sixties except the MOSFET's from Sony they where made in 1975. Enjoy the collectables and click on the picture links for more details. Suggestions regarding these transistors are welcome. I'm always looking for new semiconductor items to complete my collection, so if you would like to sell or exchange something, please contact me, jan@transparentsound.com.


Brush Crystal Company:

S35 BCC Type : S35, Silicon Junction Diode

Manufacturer : Brush Crystal Company
Year : Perhaps mid fifties
Package, Case style : Carton box, TO-8var
Spec's : Reverse Voltage=-160V(max), Forward Current=30mA, Peak Forward Current=100mA. Max. Power Dissipation 250mW, Cf=10pF
Photo's : Picture1, Picture2  Many thanks to Andrew Wylie from England for the exact information regarding this diode: Information about them is hard to find, but they used the same packaging as Intermetall in Germany. Both used a logo of a small hexagon with a letter in it - B for Brush, I for Intermetall

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UK-Military CV-series; Crystal Valve or Common Valve:

CV425 Type : CV425, Germanium Diode, see also CG1C, GEX44, GEX45/1 and the OA74

Manufacturer : UK-Military CV-series, see Brand history on this website
Year : Early sixties
Package, Case style : Sealed plastic bag, DO-14
Spec's : Forward Current(at1V)= 5mA, Reverse Voltage=65V(max), Peak Forward Current=30mA, Max Reverse Current=1mA
Photo's : Picture1

CV4073 Type : CV4073, Germanium Diode

Manufacturer : UK-Military CV-series, see Brand history on this website
Year : Early sixties
Package, Case style : Sealed plastic bag, TO-8var
Spec's : Forward Current(at1V)= ?mA, Reverse Voltage=?V(max), Peak Forward Current=?mA, Max Reverse Current=?mA
Photo's : Picture1

CV7008 Type : CV7008, Germanium Transistor

Manufacturer : UK-Military CV-series, see Brand history on this website
Year : Early sixties
Package, Case style : Sealed plastic bag, TO-8var
Spec's : Vceo=-?V, Vcbo=-?V, Hfe=?, Ic=-?mA, Icbo=-?uA, P=?mW, ft=?MHz(max), Cobo=?pF
Photo's : Picture1, Picture2

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GEC Plessey Semiconductors :

SA495 Type : SA495, PNP Silicon Transistor

Manufacturer : GEC Plessey Semiconductors "Semics"
Year : Early sixties
Package, Case style :

TO-1, The SA495 is a PNP Surface Alloy Silicon Transistor produced in 1961 by GEC Plessey Semiconductors. I didnít discover the difference between the SA495 and SA495A.  This type has a full gold plated encapsulation, other devices could be different like metal colour or a combination of these two colours.

Spec's : Vceo=-25V, Vcbo=-25V, Hfe=?, Ic=-50mA, Icbo=-1uA, P=150mW, ft=?MHz(max), Cobo=12pF
Photo's : Picture1, Picture2, Picture3

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Sinclair Semiconductors :

ST140 Type : ST140, NPN Silicon Epitaxial Planar Transistor

Manufacturer : Sinclair, brand labeled from Philco
Year : Early sixties
Package, Case style :

?, In 1958 Fairchild marketed their first silicon diffusion mesa transistors to RCA, and then planar transistor in 1959. In early 1960s the epitaxial growth technology is invented and adopted by many other semiconductor manufactures. The ST140 is a NPN Silicon Epitaxial Planar Transistor from Sinclair, although this company didnít produce transistors but applied them in their own products. I think  they brand labelled these devices from Motorola identical Van der Heem from Holland did with their semiconductors

Spec's : Vceo=-25V, Vcbo=-25V, Hfe=15-40, Ic=-50mA, Icbo=-1uA, P=680mW, ft=700MHz(max), Cobo=2.2pF
Photo's : Picture1, Picture2, Picture3

ST141 Type : ST141, NPN Silicon Epitaxial Planar Transistor

Manufacturer : Sinclair, brand labeled from Philco
Year : Early sixties
Package, Case style :

?, In 1958 Fairchild marketed their first silicon diffusion mesa transistors to RCA, and then planar transistor in 1959. In early 1960s the epitaxial growth technology is invented and adopted by many other semiconductor manufactures. The ST140 is a NPN Silicon Epitaxial Planar Transistor from Sinclair, although this company didnít produce transistors but applied them in their own products. I think  they brand labelled these devices from Motorola identical Van der Heem from Holland did with their semiconductors

Spec's : Vceo=-25V, Vcbo=-25V, Hfe=30-150, Ic=-50mA, Icbo=-1uA, P=680mW, ft=700MHz(max), Cobo=2.5pF
Photo's : Picture1, Picture2, Picture3

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Semics Semiconductors :

MAS21 Type : MAS21, Germanium Transistor

Manufacturer : ?
Year : 19??
Package, Case style : ?
Spec's : ?, (I'm looking for technical data)
Photo's : Picture1, Picture2, Picture3

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Tungsram Semiconductors:

AD149 Type : AD149, PNP Power Germanium Transistor

Manufacturer : Tungsram
Year : Sixties
Package, Case style : Carton box, TO-3
Spec's : Vceo=-30V, Vcbo=-50V, Hfe=30, Ic=-3.5A, P=22W
  : Picture1, Picture2, Picture3

EFT125 Type : EFT125, PNP Germanium Low Power Transistor

Manufacturer : Thomson 
Year : ?
Package, Case style : none, Can
Spec's : Vcbo=-?V, Hfe=?, Ic=-?mA, Icbo=?uA, P=?mW
Photo's : Picture1, Picture2

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Valvo Semiconductors:

BFY50 Type : BFY50, NPN General Purpose Medium Silicon Transistor

Manufacturer : Valvo
Year : Week 41, 1969
Package, Case style : Carton box, TO-39
Spec's : Vceo=35V, Vcbo=-/V, Hfe=30-112, Ic=1000mA, Icbo=?uA, P=800mW, f(T)=60MHz
  : Picture1, Picture2, Picture3

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Varo Semiconductors:

VT200 Type : VT200, Silicon Avalanche, Integrated Bridge Rectifier

Manufacturer : Varo Semiconductor Inc.
Year : 7615, Week 15, 1976
Package, Case style : None, TO-3 outline
Spec's : Reverse Voltage=200V(max), Reverse Voltage=140V(continous), Forward Current=1500A (Peak),  DC Forward Current=25A
  : Picture1, Picture2, Picture3, (Donated by Robert Ettema from the Netherlands)

1N4436FT Type : 1N4436FT, Silicon Avalanche, Integrated Bridge Rectifier

Manufacturer : Varo Semiconductor Inc.
Year : 7350, Week 50, 1973
Package, Case style : None, TO-3 outline
Spec's : Reverse Voltage=200V(max), Reverse Voltage=140V(continous), Forward Current=600A (Peak),  DC Forward Current=10A
  : Picture1, Picture2, Picture3, (Donated by Robert Ettema from the Netherlands)

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Unknown Device Type : Unknown device

Manufacturer : Unknown
Year : Mid sixties
Package, Case style : None, TO-24
Spec's : Vcbo=-?V, Vceo=-?V, Hfe=?, Ic=-?mA, Icbo=?uA, P=?mW, ft=?MHz, Cobo=?pF
  : Picture1, Picture2

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