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Product Detailed Parameters
- Description：TRANS PREBIAS NPN 50V SSMINI3
- Series：-
- Mfr：Panasonic Electronic Components
- Package：Tape & Reel (TR)
- 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)：47 kOhms
- Resistor - Emitter Base (R2)：22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce：60 @ 5mA, 10V
- Vce Saturation (Max) @ Ib, Ic：250mV @ 300µA, 10mA
- Current - Collector Cutoff (Max)：500nA
- Frequency - Transition：150 MHz
- Power - Max：125 mW
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：SC-89, SOT-490
- Supplier Device Package：SSMini3-F1
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Overview
The UNR921EJ0L is a silicon NPN epitaxial planar transistor with built-in bias resistors, designed for digital circuits. It features an SS-Mini3-F1 package (SC-89) and supports automatic insertion via tape packing. Key electrical parameters include a collector-emitter voltage of 50 V, a collector current of 100 mA, and a total power dissipation of 125 mW. The component integrates a base resistor (R1) of 47 kΩ and an emitter resistor (R2) of 22 kΩ, resulting in a resistance ratio of approximately 2.14. It exhibits a transition frequency of 150 MHz and a forward current transfer ratio ranging from 60 to 400.
Feature Summary
- Integrates two internal bias resistors to reduce external component count and equipment size.
- Utilizes the compact SS-Mini3-F1 surface-mount package suitable for automated assembly.
- Engineered specifically for high-speed switching applications within digital logic circuits.
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 latest documentation to confirm packaging format and compliance status. Ensure that the requested part number matches the exact pin configuration and internal resistance values required by the design schematic. Cross-reference the datasheet revision date to guarantee alignment with current manufacturing specifications.
Selection Notes
Select this component when a compact NPN solution with fixed bias ratios is required for digital switching. Compare the integrated 47 kΩ base and 22 kΩ emitter resistors against circuit requirements to ensure proper drive characteristics. Consider the 150 MHz transition frequency for high-speed performance needs within the specified voltage and current limits.
Part Context
This device belongs to the UNR921xJ series of transistors with built-in resistors manufactured by Panasonic Electronic Components. The series offers various combinations of internal resistances to suit different digital circuit configurations while maintaining a consistent small-outline footprint.
Replacement Considerations
Compatible substitutes within the same series include UNR921DJ, UNR921FJ, and UNR921KJ, which share identical package dimensions and general electrical ratings but feature different internal resistor values.
FAQ
What are the specific values of the built-in resistors?
The UNR921EJ0L contains a base resistor (R1) of 47 kΩ and an emitter resistor (R2) of 22 kΩ.
What is the maximum collector-emitter voltage rating?
The absolute maximum rating for collector-emitter voltage (VCEO) is 50 V.
What package type does this component use?
It utilizes the SS-Mini3-F1 package, also known as SC-89 or SOT-490.
