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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V 0.1A MINI3
- Series：-
- Mfr：Panasonic Electronic Components
- Package：Tape & Reel (TR),Cut Tape (CT)
- Resistors Included：R1 and R2
- Transistor Type：NPN - Pre-Biased
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：50 V
- Resistor - Base (R1)：10 kOhms
- Resistor - Emitter Base (R2)：4.7 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：20 @ 5mA, 10V
- Vce Saturation (Max) @ Ib, Ic：250mV @ 300µA, 10mA
- Current - Collector Cutoff (Max)：500nA
- Frequency - Transition：150 MHz
- Power - Max：200 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：Mini3-G1
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Overview
The UNR221K00L is a Silicon NPN epitaxial planar transistor with built-in bias resistors, designed for digital circuits. It features a collector-emitter voltage (VCEO) of 50 V and a maximum collector current (IC) of 100 mA. The device includes an internal base resistor (R1) of 10 kΩ and an emitter resistor (R2) of 4.7 kΩ. Electrical characteristics include a minimum forward current transfer ratio (hFE) of 20 at IC = 5 mA and VCE = 10 V. Transition frequency (fT) is specified at 150 MHz under standard test conditions.
Feature Summary
- Integrates NPN transistor with dual bias resistors to reduce component count
- Miniature SC-59 package facilitates automated surface-mount assembly
Applications
- Digital logic interface circuits
- Switching applications in consumer electronics
- General-purpose signal processing
Procurement Notes
Verify the specific ordering code against manufacturer documentation to confirm availability status. Check for lifecycle notifications such as planned maintenance or discontinuation. Ensure compliance with RoHS directives relevant to the target market. Confirm package type matches design requirements before finalizing procurement.
Selection Notes
Select based on required hFE gain and resistor values. Verify voltage ratings match circuit operating conditions. Consider thermal dissipation limits for high-current applications. Compare transition frequency requirements against datasheet specifications. Evaluate package compatibility with existing PCB layouts.
Part Context
Part of the Panasonic UNR221x series of composite transistors. Designed specifically for digital circuit applications requiring integrated biasing. Offers a compact alternative to discrete resistor-transistor combinations.
Replacement Considerations
- UN221K
FAQ
What are the resistance values for R1 and R2?
For the UNR221K variant, R1 is 10 kΩ and R2 is 4.7 kΩ.
What is the maximum collector current rating?
The absolute maximum collector current (IC) is rated at 100 mA.
What is the transition frequency specification?
The transition frequency (fT) is typically 150 MHz when measured at VCB = 10 V and IE = -2 mA.
