Product Overview
Siliconix J2068 N-Channel JFET - TO-92, Vintage 1980 NOS, Low-Noise Analog and Audio Applications
Condition
Unused NOS. Marked STS J / 2068 / 8037 on the body - date code confirms manufacture in the 37th week of 1980. Three leads are straight with no bending or oxidation. Body is clean with no visible damage. Sourced from an electronics distributor consolidating inventory. Evaluation: Visual inspection only. Function testing not performed.
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Product Overview
Siliconix J2068 - an N-Channel Junction Field-Effect Transistor in a standard TO-92 plastic package. Siliconix was a founding force in FET design, and the J-prefix line was their commercial plastic TO-92 N-channel JFET family. This unit carries the vintage interlocking Siliconix logo molded alongside the part number - the mark restoration technicians and audiophiles recognize on sight. Date code 8037 places manufacture in 1980. Many specific Siliconix JFET part numbers from this era are no longer in production, making NOS examples the only path to an exact replacement.
Key Features
- N-Channel JFET - voltage-controlled, high input impedance, low noise operation
- TO-92 plastic package - standard through-hole footprint, three straight leads
- Vintage Siliconix manufacture - interlocking STS logo confirmed on body
- Date code 8037 - manufactured week 37 of 1980
- Leads straight and oxide-free per photo inspection
- Body clean, no cracks or markings beyond factory print
Applications
- Vintage audio restoration tech desoldering a failed input stage JFET from a classic preamplifier and dropping this in as a period-correct replacement to preserve the original analog signal path
- Guitar effects pedal builder or modifier sourcing an authentic Siliconix JFET for a fuzz or overdrive circuit where the specific pinch-off character of the original part shapes the tone
- Test equipment repair tech replacing a failed high-impedance input stage transistor in a vintage oscilloscope or signal generator to bring the instrument back to original spec
- Analog circuit experimenter breadboarding a low-noise amplifier input stage or precision switching circuit where a JFET's voltage-controlled, high-isolation behavior is the right architecture
- Maker or hobbyist building a small-signal preamp, condenser microphone buffer, or audio interface front end that benefits from the low-noise characteristics of a through-hole JFET
Frequently Asked Questions
Is this a genuine Siliconix part?
Yes. Photos confirm the vintage interlocking Siliconix STS logo molded directly on the body alongside the J2068 part number and date code 8037. Siliconix later became a Vishay subsidiary brand, but this unit is from original Siliconix production circa 1980.
What is the pinout for the J2068 in a TO-92 package?
Pinout for this specific unit is not confirmed in our records. TO-92 JFETs do not share a universal pinout across all manufacturers and part numbers. Verify the pinout for the J2068 against your circuit requirements before soldering.
Does this come with a datasheet?
No datasheet is included. This is a bare component only.
Can this substitute for other N-Channel JFETs like the J201 or 2N5457?
Channel type and package are compatible - all are N-Channel JFETs in TO-92. Whether the J2068 is a functional substitute for a specific circuit depends on the voltage, current, and pinch-off characteristics required by that design. Review the circuit requirements against the J2068 specifications before substituting.
What is included with the order?
The J2068 transistor only. No documentation, accessories, or additional hardware included.
Forty-four years in a parts bin and the leads are still straight. Whatever you are bringing back to life, this one has been waiting for the right circuit.
