Spice Model !!top!! — Tip35c

The TIP35C is a high-power silicon NPN transistor designed for general-purpose power amplifiers and switching applications. Commercial SPICE models provided by manufacturers are often overly simplistic or inaccurate. Below is a feature-rich, physics-guided SPICE subcircuit model that accurately maps to the physical characteristics outlined in the STMicroelectronics TIP35C Datasheet . 🛠️ Feature 1: High-Fidelity TIP35C SPICE Model

Without a dedicated TIP35C SPICE model, simulations of audio output stages or H-bridges will yield optimistic results that may lead to catastrophic failure in the real world.

, reflecting the high current gain capabilities of the device. Usually set near tip35c spice model

The TIP35C SPICE model is more than a set of equations; it's a digital twin of a robust power transistor. By understanding parameters like BF , IKF , CJC , and TF , you can accurately simulate linear amplifiers, power supplies, and motor drivers. Always use manufacturer-sourced or well-verified models, and never trust a generic NPN for power applications.

* TIP35C NPN Power Transistor SPICE Model * Datasheet reference: 100V, 25A, 125W * Created using typical parameters from ON Semiconductor/ST datasheet * Model type: Gummel-Poon (Level 1) The TIP35C is a high-power silicon NPN transistor

Use the same .MODEL statement in the simulation profile or add it to the nom.lib library (advanced users only).

The TIP35C datasheet typically specifies a DC current gain ($h_FE$) ranging from 20 to 100 depending on the bin sorting. In SPICE, BF sets the maximum small-signal forward beta. 🛠️ Feature 1: High-Fidelity TIP35C SPICE Model Without

Unit. ICEO. Collector cut-off current. (IB = 0) VCE = 60 V. 1. mA. IEBO. Emitter cut-off current. (IC = 0) VEB = 5 V. 1. mA. ICES. STMicroelectronics Applications and Features of the TIP35C - ariat-tech.com 5 Aug 2024 —

via the standard SPICE XTB and XTI temperature coefficients.

Then tie the temperature back to the BJT via TEMP=V(5) . This reveals that at 20A continuous, the junction hits 150°C in under 200ms – information you cannot get from a static .OP analysis.