This specific part is a "hot" item in the secondary market because it is often discontinued (obsolete), making original NEC stock highly valuable for authentic restorations. Interpreting the Datasheet
Check the DC current gain. If you are replacing this transistor in a stereo amplifier, you should try to match the hFE of the B58944 with its NPN counterpart to prevent audio distortion. 3. Power Dissipation (Pc) nec b58944 datasheet hot
High amperage capacity for driving speakers. This specific part is a "hot" item in
This value indicates how many Watts the device can handle. If your original B58944 "ran hot" and failed, consider using a replacement with a higher Pc rating or improving the thermal paste and heatsink contact. Replacement and Cross-Reference If your original B58944 "ran hot" and failed,
The B58944 is typically a PNP Power Transistor designed for high-current applications. In the world of power electronics, "B" series nomenclature usually points to PNP configurations, while "D" series points to NPN. These are frequently used in complementary pairs for push-pull amplifier stages. Key Technical Specifications