TRANSISTOR MUSEUM™ Historic Transistor Photo Gallery
Transistor Size (1/4”L X 1/8”W X 1/4”H) Date Code 53 on Top Cardboard Vacuum Tube Style Packaging Used for Early 2N35 Commercial Devices	SYLVANIA 2N35 TYPE Germanium NPN Alloy Junction Audio Amplifier USAGE Hobbyist/Experimenter Early Commercial Radio DATE INTRODUCED 1953 CASE STYLES Black Metal (Early) Silver Metal (Later) AVAILABILITY Common (High Volume Production)
HISTORIC NOTES The Sylvania 2N35 was one of the early transistors most commonly used by hobbyist/experimenters in the 1950s. Unlike most inexpensive transistors, the 2N35 is an NPN type, and this made it ideally suited for many circuits combined with the more common PNP types (such as the Raytheon CK722 and the GE 2N107). Sylvania marketed the transistor, along with a companion PNP 2N34, directly to the hobbyist/experimenter market by publishing transistor project construction booklets and even kits containing the 2N35. The 1955 Lafayette catalogue lists the 2N35 as available for $4.30. A kit containing two 2N35s, one famous 1N34 germanium diode, and the booklet “28 Uses for the Junction Transistor” was listed for only $4.45. Although the 2N35 was primarily advertised for use in hobbyist construction projects, this device was also used in commercial products, at least for a short time. Early versions of the famous Zenith Royal 500 transistor radio, introduced in 1955, used the 2N35 in the audio circuitry.
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