Sylvania: Vintage Transistors / Diodes Collection
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.
| Evolution of the Crystal Rectifiers: | |||
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Manufacturer | : | Sylvania Electric, Western Electric, Sylvania etc. |
| Year | : | Between 1942 and1950 | |
| Package, Case style | : | Carton box, PIN etc. | |
| Spec's | : | Thanks to Simon Hemour from the US for his historic information. See book: The Bell System Technical Journal, Vol. XXVI October, 1947 No. 4, The Radar Receiver, By L. W. MORRISON, JR , Nice article about harvesting microwaves energy, see website: http://ieeexplore.ieee.org/stamp/stamp.jsp?reload=true&arnumber=6922611 | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, (see website: http://www3.alcatel-lucent.com/bstj/) | |
| GT-442 | Type | : | GT-422, PNP Germanium Point Contact Transistor (New) (Thanks to Rick Hirsh from the US for his grateful historic information) |
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Manufacturer | : | Sylvania |
| Year | : | 1952 till 1953 | |
| Package, Case style | : | Carton box, Bakelite half round 12mm can | |
| Spec's | : | Vcbo=-?V, Hfe=?, Ic=-?mA, P=?mW (Who can help me with the technical data?) the Sylvania GT-372 was only an "experimental" model that was developed in 1949, which was Sylvania's first germanium point-contact transistor that was made. But, it never went into actual production, like the GT-442 germanium point-contact did, when it's prototype was first developed in 1952, and then went into actual production in 1953. The GT-442, was Sylvania's 2nd germanium point-contact transistor developed and is quite "unique" in its design, being completely different from the GT-372. The GT-442 had a much better design, where it was like a tiny "miniaturized" vacuum tube that could be plugged into a socket, instead of being soldered into a circuit. | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5 |
| 1N21 | Type | : | 1N21, Diode |
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Manufacturer | : | Sylvania Electric |
| Year | : | ? | |
| Package, Case style | : | Carton box, PIN | |
| Spec's | : | Pin (W) (Test Condition) = ?m, R(L)(Ohms) (Test Condition) = ?, z(if) Min. (Ohms) IF Impedance = ?, z(if) Max. (Ohms) IF Impedance = ?, f(test) (Hz) Test Frequency = ? | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, (Donated by Ronald Werner from Norway) |
| 1N23A | Type | : | 1N23A, General Purpose UHF-MW Silicon Mixer Diode |
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Manufacturer | : | Sylvania Electric |
| Year | : | ? | |
| Package, Case style | : | Carton box, PIN | |
| Spec's | : | Pin (W) (Test Condition) = 1.0m, R(L)(Ohms) (Test Condition) = 100, z(if) Min. (Ohms) IF Impedance = 300, z(if) Max. (Ohms) IF Impedance = 600, f(test) (Hz) Test Frequency = 10G | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4 |
| 1N23B | Type | : | 1N23B, General Purpose UHF-MW Silicon Mixer Diode |
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Manufacturer | : | Sylvania Electric |
| Year | : | ? | |
| Package, Case style | : | Carton box, PIN | |
| Spec's | : | Pin (W) (Test Condition) = 1.0m, R(L)(Ohms) (Test Condition) = 100, z(if) Min. (Ohms) IF Impedance = 250, z(if) Max. (Ohms) IF Impedance = 550, f(test) (Hz) Test Frequency = 9.4G | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4 |
| 1N34 | Type | : | 1N34, Germanium Diode |
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Manufacturer | : | Sylvania Electric |
| Year | : | ? | |
| Package, Case style | : | Carton box, ? | |
| Spec's | : | Forward Current(Vf=1V)= 5mA, Reverse Voltage=75V(max), Ir(Vrm=10V)=30uA, Ir(Vrm=50V)=500uA | |
| Photo's | : | Picture1, Picture2 |
| 1N34 | Type | : | 1N34, Crystal Diode |
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Manufacturer | : | Sylvania Electric |
| Year | : | ? | |
| Package, Case style | : | Carton sleeve, ? | |
| Spec's | : | Forward Current (Vf=1V)= 5mA, Reverse Voltage=75V(max), Ir(Vrm=10V)=30uA, Ir(Vrm=50V)=500uA | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5 |
| 1N34A | Type | : | 1N34A, Germanium Diode |
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Manufacturer | : | Sylvania |
| Year | : | Fifties | |
| Package, Case style | : | Carton sleeve, ? | |
| Spec's | : | Forward Current (Vf=1V)= 5mA, Reverse Voltage=75V(max), Ir(Vrm=10V)=30uA, Ir(Vrm=50V)=500uA | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5, Picture6 |
| 1N82 | Type | : | 1N82, Germanium Diode |
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Manufacturer | : | Sylvania |
| Year | : | Fifties | |
| Package, Case style | : | None, Glass bulb | |
| Spec's | : | Forward Current (Vf=1V)= ?mA, Reverse Voltage=?V(max), Ir(Vrm=10V)=?uA, Ir(Vrm=50V)=?uA | |
| Photo's | : | Picture1, Picture2, Picture3 |
| 2N34 | Type | : | 2N34, PNP Germanium Transistor |
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Manufacturer | : | Sylvania, (Picture 8 is Sylvania + HP transistor) |
| Year | : | 1953 | |
| Package, Case style | : | Carton sleeve, TO-22var | |
| Spec's | : | Vcbo=-25V, Hfe=40, Ic=-8mA, P=50mW | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5, Picture6, Picture7, Picture8 |
| 2N68 | Type | : | 2N68, PNP Alloy Junction Germanium Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | Mid fifties | |
| Package, Case style | : | Carton box, TO-8 with heatsink | |
| Spec's | : | Vcbo=-25V,Vebo=-?V, Hfe=40, Ic=-1.5A, Icbo=5mA, P=2W, ft=400kHz, NPN complementary device is the 2N95. | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5, Picture6, Picture7 |
| 2N95 | Type | : | 2N95, NPN Alloy Junction Germanium Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | Mid fifties | |
| Package, Case style | : | Carton box, TO-8 with heatsink | |
| Spec's | : | Vcbo=25V,Vebo=-?V, Hfe=?, Ic=1.5A, Icbo=?mA, P=2.5W, ft=?kHz, PNP complementary device is the 2N68. | |
| Photo's | : | Picture1, Picture2, Picture3 |
| 2N101 | Type | : | 2N101, PNP Germanium Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | 1957, week 52 (752) | |
| Package, Case style | : | Carton box, TO-8, The 2N101 is supplied without a finned heatsink like the 2N68. The GT551 is a pre-production version of the Sylvania 2N68 and 2N95 commercial transistors. | |
| Spec's | : | Vcbo=-25V,Vebo=-?V, Hfe=?, Ic=-1.5A, P=1W, NPN complementary device is the 2N102. | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5, Picture6, Picture7, Picture8 |
| 2N102 | Type | : | 2N102, NPN Germanium Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | Mid fifties "104" Maybe week-4 1961, same production code style as Raytheon? | |
| Package, Case style | : | Carton box, TO-8, The 2N102 is supplied without a finned heatsink like the 2N95 | |
| Spec's | : | Vceo=25V, Vcbo=?V, Hfe=?, Ic=1.5A, P=1W, PNP complementary device is the 2N101. | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4 |
| 2N143 | Type | : | 2N143/13, PNP Germanium Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | Mid fifties "104" Maybe week-4 1961, same production code style as Raytheon? | |
| Package, Case style | : | Carton box, with sleeve, TO-8, The 2N143 is supplied without a finned heatsink like the 2N68. | |
| Spec's | : | Vcbo=-60V,Vceo=-30V, Hfe=40, Ic=-800mA, Icbo=100uA, P=1W, ft=400kHz, NPN complementary device is the 2N102. | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5 |
| 2N144 | Type | : | 2N144, NPN Germanium Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | Mid fifties "104" Maybe week-4 1961, same production code style as Raytheon? | |
| Package, Case style | : | Carton box, with sleeve, TO-8, The 2N101 is supplied without a finned heatsink like the 2N95. | |
| Spec's | : | Vcbo=60V,Vebo=30V, Hfe=40, Ic=800mA, Icbo=100uA, P=1W, ft=400kHz, PNP complementary device is the 2N143. | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5 |
| 2N229 | Type | : | 2N101, NPN Germanium Alloy Junction Transistor |
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Manufacturer | : | Sylvania |
| Year | : | 1950s-1960s | |
| Package, Case style | : | ?, TO-22 | |
| Spec's | : | Vceo=12V, Vcbo=10V, Hfe=75, Ic=40mA, Icbo=200uA, P=50mW, ft=550kHz | |
| Photo's | : | Picture1, Picture2 |
| 2N247 | Type | : | 2N247, PNP Germanium PNP Alloy Junction Drift Transistor |
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Manufacturer | : | Sylvania |
| Year | : | 852, week-62 1958 | |
| Package, Case style | : | Carton box, TO-22 | |
| Spec's | : | Vceo=-?V, Vcbo=-40V, Hfe=75, Ic=-10mA, Icbo=16uA, P=80mW | |
| Photo's | : | Picture1, Picture2, Picture3, (see also RCA 2N247) |
| 2N255 | Type | : | 2N255, PNP Germanium Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | Mid fifties | |
| Package, Case style | : | Carton box, TO-3 | |
| Spec's | : | Vceo=12V, Vcbo=-15V, Hfe=75, Ic=-3A, P=1.5W, ft=200kHz | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4 |
| 2N306 | Type | : | 2N306, NPN Germanium Low Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | ? | |
| Package, Case style | : | ?, TO-22 | |
| Spec's | : | Vceo=15V, Vcbo=20V, Hfe=25, Ic=2mA, P=50mW, ft=600kHz | |
| Photo's | : | Picture1, Picture2, Picture3 |
| 2N711 | Type | : | 2N711, PNP Germanium Low Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | Mid fifties | |
| Package, Case style | : | Carton box, TO-18 | |
| Spec's | : | Vceo=-12V, Vcbo=-12V, Hfe=20-250, Ic=-100mA, Icbo=3uA, P=150mW, ft=1MHz, Cobo=7.5pF | |
| Photo's | : | Picture1, Picture2 |
| 2N1294 | Type | : | 2N1294, NPN Germanium Power Transistor |
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Manufacturer | : | Sylvania |
| Year | : | ? | |
| Package, Case style | : | Carton box, TO-3 | |
| Spec's | : | Vceo=45V, Vcbo=80V, Hfe=>30, Ic=3A, Icbo=300uA, P=25W | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5, Picture6, Picture7 |
| Sylvania's BIG-9 | Type | : | 101, 102, 103, 104, NPN Germanium Power Transistors, 105, 106, 107, 108, 109 PNP Germanium Power Transistors |
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Manufacturer | : | Sylvania |
| Year | : | ? | |
| Package, Case style | : | Carton box, TO-22 for all models | |
| Spec's | : | Unknown | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5 |
| Sylvania Transistor Kit | Type | : | Transisytor kit, originally included with 2pcs 2N35, 1pcs. 1N34A and one "28 uses for Junction Transistors" booklet. |
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Manufacturer | : | Sylvania |
| Year | : | Mid fifties | |
| Package, Case style | : | Two tone Yellow Carton box. | |
| Spec's | : | Unknown. Kit is incomplete. I'm missing one transistor 2N35 and one diode 1N34A. The box is very detailed with extra technical information regarding 2N68, 2N94, 2N95, 2N101 and 2N102. More information regarding the "28 uses for Junction Transistors" see Book/Datasheet info. | |
| Photo's | : | Picture1, Picture2, Picture3, Picture4, Picture5 |
These are the early Power Transistors of Sylvania and fully described on the website of Jack Ward www.semiconductormuseum.com. The transistors where developed for audio applications in the mid 50s and produced in several styles. Like the 2N101 on the left, this is the model with thick leads but there are other devices with thin leads. The PNP models are the 2N68 (with heatsink 2Watt), 2N101 and 2N143 both (naked 1Watt) and for the NPN models the 2N95 (withheat sink 2Watt), 2N102 and 2N144 both (without heatsink 1Watt). The Sylvania series as described is in my opinion unique, because Sylvania designed these devices with similar characteristics so they could be used in output stages of audio amplifiers.
