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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V SMINI3
- 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)：4.7 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：150 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SMini3-G1
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Overview
The UNR521L00L is a Silicon NPN epitaxial planar transistor with built-in resistors, designed for digital circuits. It features an S-Mini3-G1 package (EIAJ: SC-70) with three terminals. Key electrical parameters include a collector-emitter voltage of 50 V and a maximum collector current of 100 mA. The total power dissipation is rated at 150 mW. Internal resistance values are R1 = 4.7 kΩ and R2 = 4.7 kΩ. The forward current transfer ratio (hFE) ranges from 20 to 60 under standard conditions.
Feature Summary
- Integrates two biasing resistors within the transistor package to reduce component count and board space.
- Utilizes an S-Mini surface-mount package suitable for automated tape and magazine packing processes.
Applications
- Digital logic interface circuits
- Switching applications in consumer electronics
- General-purpose signal processing
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct internal resistor configurations. Confirm RoHS compliance status and lifecycle stage directly with Panasonic Industry before procurement. Check for any recent maintenance or discontinuation notices on the official semiconductor website.
Selection Notes
Select this component when a compact NPN switching solution with integrated base and pull-down/pull-up resistors is required. Ensure the 50 V voltage rating and 100 mA current capacity meet the circuit requirements. Verify that the specific 4.7 kΩ / 4.7 kΩ resistor combination matches the design specifications.
Part Context
This part belongs to the UNR521x series, which includes various combinations of built-in resistors for different biasing needs. The 'L' suffix specifically denotes the 4.7 kΩ / 4.7 kΩ configuration. The series is manufactured by Panasonic Industry as a silicon NPN epitaxial planar device.
Replacement Considerations
Consult the official Panasonic datasheet for direct cross-references. Equivalent parts may include other pre-biased NPN transistors in SC-70 packages with similar 4.7k/4.7k resistor ratios, but pinout and hFE characteristics must be verified.
FAQ
What are the internal resistance values for the UNR521L?
The UNR521L contains two internal resistors: R1 is 4.7 kΩ and R2 is 4.7 kΩ.
What is the maximum collector current for this device?
The absolute maximum rating for the collector current (IC) is 100 mA.
Is the UNR521L compliant with RoHS directives?
Yes, the product complies with the RoHS Directive (EU 2002/95/EC).
