1. General Description & Purpose

️· The SST4391 is a JFET (Junction Field-Effect Transistor).
️· It's designed for switching and amplification applications.
️· Linear Integrated Systems (now distributed by Micross Components) originally provided this information.

2. Key Features & Benefits

️· Low Input Capacitance: Suitable for high-speed circuits.
️· Good Transconductance (gfs): Provides amplification capabilities.
️· Low Drain-Source On-Resistance (rDS(on)): Minimizes power loss in switching applications.
️· High Voltage Capability: Supports various circuit configurations.

3. Electrical Characteristics (Key Values)

️· VGS(L): -12V (Gate-Source Voltage - Limited)
️· RL: 800Ω (Load Resistance)
️· ID(on): 12mA (Drain Current - On State)
️· Input Capacitance (Ciss): 13pF
️· Drain-Source On-Resistance (rDS(on)): ≤ 30Ω (at VGS = 0V, ID = 1mA)
️· Forward Transconductance (gfs): 6 mS (at VDS = 20V, ID = 1mA)
️· Output Conductance (gos): 25 µS (at VDS = 20V, ID = 1mA)
️· Input Noise Voltage (en): 3 nV/√Hz (at VDS = 10V, ID = 10mA)

4. Switching Characteristics

️· td(on): 2ns (Turn-On Time)
️· td(off): 6ns (Turn-Off Time)
️· tr: 2ns (Rise Time - not fully specified)
️· tf: 13ns (Fall Time)
️· *Note: Switching characteristics are based on pulsed testing conditions (PW ≤ 300µs, Duty Cycle ≤ 3%) to prevent device overheating.*

5. Package Information

️· Available in SOT-23 and bare die formats.
️· Contact Micross for detailed package dimensions.

6. Contact Information & Disclaimer

️· Micross Components Europe:
- Tel: +44 1603 788967
- Email: chipcomponents@micross.com
- Web: http://www.micross.com/distribution
️· Disclaimer: Linear Integrated Systems and Micross Components provide this information "as is" and assume no responsibility for its use. No patent rights are granted.