2SA1790JCL

Single Bipolar Transistors Overview

The Panasonic 2SA1790JCL is a silicon PNP epitaxial planar transistor housed in an SS-Mini3-F1 (SC-89) package. It features a collector-emitter voltage of -20 V and a maximum collector current of -30 mA with 125 mW power dissipation. The device offers a transition frequency up to 300 MHz and a noise figure as low as 2.8 dB, making it suitable for high-frequency amplification.

Single Bipolar Transistors Feature Summary

• Optimized for RF amplification in FM/AM radio circuits
• High transition frequency supporting high-frequency signal processing
• Compact SS-Mini type package enabling equipment downsizing and automated tape insertion

Single Bipolar Transistors Applications

• RF amplification for FM radios
• RF amplification for AM radios
• General-purpose high-frequency amplification

Single Bipolar Transistors Procurement Notes

Verify the specific ordering suffix 'JCL' against official Panasonic documentation to confirm exact binning or packaging specifications. Confirm the component lifecycle status, as datasheets indicate maintenance or discontinuation phases may apply. Ensure the requested part matches the SC-89 physical dimensions and pinout configuration required by the design.

Single Bipolar Transistors Selection Notes

Select this component when designing circuits requiring low-noise performance at frequencies around 5 MHz to 200 MHz. Consider the complementary 2SC4626J NPN transistor for push-pull configurations. Evaluate thermal management requirements based on the 125 mW absolute maximum rating and ensure operating conditions remain within the specified junction temperature limits.

Single Bipolar Transistors Part Context

This component belongs to the Panasonic 2SA1790 series of small-signal bipolar transistors designed specifically for audio and radio frequency applications. It utilizes a silicon epitaxial planar process to achieve stable electrical characteristics in a miniature surface-mount footprint, serving as a standard solution for consumer electronics signal processing stages.

Single Bipolar Transistors Replacement Considerations

The datasheet identifies the 2SC4626J as the complementary NPN transistor. Verify pinout compatibility and electrical parameters before substituting with other SC-89 packaged PNP transistors from different manufacturers.

Single Bipolar Transistors FAQ

What is the minimum noise figure for this transistor?

The minimum noise figure is 2.8 dB, measured at a collector-base voltage of -10 V, emitter current of 1 mA, and a frequency of 5 MHz.

What are the hFE gain ranks available?

The device is available in Rank B (hFE 70 to 140) and Rank C (hFE 110 to 220), measured at VCE = -10 V and IC = -1 mA.

Is this transistor suitable for high-voltage switching?

No, the maximum collector-emitter voltage is limited to -20 V, which restricts its use to low-voltage signal amplification rather than high-voltage switching applications.