onsemi TIP132G

Overview

TIP132G from onsemi is an NPN Darlington power transistor designed for high-current, low-speed switching and linear amplification in industrial control and power supply circuits; it delivers 100 V_CEO(sus) (min), 8 A continuous I_C, 70 W P_D @ T_C = 25°C, and typical h_FE of 2500 at I_C = 4.0 A, used in relay drivers and motor control stages.

For engineers reviewing the TIP132G datasheet, pinout, applications, or equivalent options, key selection criteria include V_CEO(sus) ≥ 100 V, I_C ≥ 8 A, built-in base-emitter shunt resistors, TO-220 package thermal performance, and Pb-free compliance for RoHS-constrained designs.

Technical Context

The TIP132G integrates two NPN transistors in monolithic Darlington configuration with internal base-emitter shunt resistors (~8.0 kΩ and ~120 Ω), enabling high DC current gain without external bias components. It operates in linear and saturation regions with V_CE(sat) ≤ 2.0 V at I_C = 4.0 A and I_B = 16 mA.

Thermal design relies on R_JC = 1.78 °C/W (max) and R_JA = 63.5 °C/W, requiring heatsinking for sustained >2 W dissipation at ambient; safe operating area (SOA) is defined by pulse derating curves up to 100 ms with duty cycle dependence.

Key Specifications

Pinout & Package

Package: TO-220AB (Case 221A, Style 1), Pb-free, through-hole mounting, electrically insulated tab (collector-connected), rated for 70 W dissipation at case temperature 25°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN Darlington power transistor applications.

Compared with BDW53C and TIP142, the TIP132G provides superior voltage safety margin and integrated turn-off assurance, making it optimal for 72–100 V industrial switching where layout simplicity and SOA robustness are critical.

Availability

TIP132G is available at Aetrix Electronics and suitable for industrial relay drivers, DC motor controllers, linear power supplies, and lamp dimming circuits requiring stable component supply across multi-year production cycles.

Supply support for TIP132G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The TIP132G belongs to onsemi's legacy silicon power transistor product line, engineered for ruggedized, high-reliability linear and switching applications in harsh environments with minimal external components.

FAQ

What is the maximum continuous collector current rating for the TIP132G?

The TIP132G is rated for 8.0 A continuous collector current (I_C) at case temperature T_C = 25°C. This rating assumes adequate heatsinking; derating applies above 25°C per the published power derating curve, with zero dissipation at T_C = 150°C. Peak current capability reaches 12 A for short pulses.

Does the TIP132G have built-in base-emitter resistors?

Yes, the TIP132G features monolithic integration of base-emitter shunt resistors (~8.0 kΩ and ~120 Ω) that ensure reliable turn-off without external components. This design prevents unintended conduction in inductive load applications and eliminates the need for discrete pull-down resistors in most relay and motor driver circuits.

What is the collector-emitter sustaining voltage (V_CEO(sus)) specification for the TIP132G?

The TIP132G has a minimum collector-emitter sustaining voltage V_CEO(sus) of 100 Vdc at I_C = 30 mAdc and I_B = 0. This parameter defines the maximum voltage the device can block in the off state while maintaining safe operation, making it suitable for 80–100 V DC bus applications such as industrial power distribution and battery-powered equipment.

Can the TIP132G be used as a direct replacement for the TIP132?

Yes, the TIP132G is the Pb-free version of the TIP132 and shares identical electrical specifications, pinout, package dimensions, and thermal characteristics. The "G" suffix denotes RoHS-compliant packaging with no lead content, and it is fully interchangeable in new designs and legacy board reworks where lead-free compliance is required.

What thermal resistance values apply to the TIP132G in TO-220 package?

The TIP132G exhibits a maximum junction-to-case thermal resistance (R_JC) of 1.78 °C/W and a junction-to-ambient value (R_JA) of 63.5 °C/W. These values assume standard mounting on a bare PCB; actual R_JA improves significantly with heatsinking-designers must calculate required heatsink resistance using R_θSA = (T_J(max) − T_A)/P_D − R_JC − R_θCS.