Device Overview
UJ3N120065K3S is a Qorvo JFET in a TO-247-3L package. For substitution or design review, the strongest comparison points are Drain-Source Voltage (1200 V), RDS(on) (66 mOhm), Exact Package (TO-247-3L).
Selection-Critical Data
| Parameter | Confirmed Data | Why It Matters |
|---|---|---|
| Drain-Source Voltage | 1200 V | Defines the electrical voltage envelope that must cover the intended operating or stress level. |
| RDS(on) | 66 mOhm (Datasheet headline / VGS=0 V, ID=10 A, TJ=25 C context) | Affects conduction loss and heat generation under the stated current, gate-drive and temperature conditions. |
| Exact Package | TO-247-3L | Determines PCB footprint, pinout, mechanical assembly and orderable-variant compatibility. |
| Device Type | Normally-on SiC JFET | Defines the device function or architecture that a compatible replacement must preserve before secondary ratings are compared. |
| Continuous Drain Current | 34 A (Maximum Ratings) | Defines the current-handling or drive capability that must meet the load while respecting current-path and thermal limits. |
| Maximum Junction Temperature | 175 degC | Defines the upper junction-temperature limit for thermal design and derating. |
Power-Device Selection Notes
For drain-source voltage, 1200 V is the approved value. Defines the electrical voltage envelope that must cover the intended operating or stress level. JFET is the stated device type value. Defines the device function or architecture that a compatible replacement must preserve before secondary ratings are compared.
At 66 mOhm, the rds(on) affects conduction loss and heat generation under the stated current, gate-drive and temperature conditions. Technical condition: Datasheet headline / VGS=0 V, ID=10 A, TJ=25 C context.
The exact package is TO-247-3L; this determines PCB footprint, pinout, mechanical assembly and orderable-variant compatibility.
The continuous drain current is 34 A; this defines the current-handling or drive capability that must meet the load while respecting current-path and thermal limits. Technical condition: Maximum Ratings.
