STMicroelectronics STD830CP40

Overview

STD830CP40 from STMicroelectronics is a hybrid complementary NPN/PNP power bipolar transistor pair in a single DIP-8 package, rated for 400 V V_CEO, 3 A I_C, and 45 W P_TOT (case), with low 0.5 V V_CE(sat) at I_C = 0.7 A / I_B = 0.1 A, designed specifically for compact fluorescent lamp (CFL) ballast circuits operating directly from 220 V mains.

For engineers reviewing the STD830CP40 datasheet, STD830CP40 pinout, STD830CP40 application, or STD830CP40 equivalent, this dual-transistor pair enables simplified CFL half-bridge switching with reduced component count, high-voltage blocking (700 V NPN VCBO / 500 V PNP VCBO), and matched dynamic parameters for balanced conduction and commutation.

Technical Context

The STD830CP40 integrates an NPN (V_CEO = 400 V, V_CBO = 700 V) and PNP (V_CEO = 400 V, V_CBO = 500 V) power BJT on a common substrate using high-voltage multi-epitaxial planar technology. It supports resistive-load switching with t_r = 100 ns, t_s = 2.4 μs, and t_f = 100 ns at I_C = 0.7 A.

Its dual-island DIP-8 package provides electrically isolated terminals for independent gate/base drive routing, enabling robust half-bridge operation without cross-conduction risk. Thermal resistance is R_thJC = 2.7 °C/W per transistor, supporting continuous operation up to T_J = 150 °C.

Key Specifications

Pinout & Package

The STD830CP40 is housed in a dual-island DIP-8 package (JEDEC MS-001AC), with physically and electrically separated terminals for NPN and PNP transistors to prevent latch-up and enable independent base control. Pin 1–4 serve the NPN device; pins 5–8 serve the PNP device.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar complementary power transistor pair applications.

Compared with STGD10NB60KD and BDW93C/BDW94C, the STD830CP40 uniquely delivers matched high-voltage (400 V) complementary switching in one thermally coupled package-enabling simpler, more reliable CFL ballasts without external level shifters or voltage derating compromises.

Availability

STD830CP40 is available at Aetrix Electronics and suitable for compact fluorescent lamp (CFL) ballasts, electronic lighting reference designs, and medium-voltage half-bridge power stages requiring stable component supply and long-lifecycle support.

Supply support for STD830CP40 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs, discrete devices, and MEMS sensors for industrial, automotive, and consumer markets.

The STD830CP40 belongs to ST's high-voltage power transistor family, engineered specifically for energy-efficient lighting control with emphasis on reliability, thermal robustness, and system-level simplification in AC-mains-connected applications.

FAQ

What is the maximum junction temperature and thermal resistance of STD830CP40?

The STD830CP40 has a maximum operating junction temperature of 150 °C and a junction-to-case thermal resistance of 2.7 °C/W per transistor when mounted on a standard heatsink. This allows sustained 3 A collector current operation with ≤45 W total dissipation per device under controlled case temperature conditions.

Can STD830CP40 be used in DC-DC converters above 400 V input?

No - the absolute maximum V_CEO is 400 V with no derating allowance. For DC-DC converters with input voltages exceeding 350 V DC, ST recommends using devices with ≥600 V rating such as the STGP10NC60HD or discrete 600 V IGBTs to ensure sufficient SOA margin and long-term reliability.

Does STD830CP40 require external base resistors in CFL applications?

Yes - base current must be limited to ≤1.5 A peak and ≤0.2 A DC. Typical designs use 1–2.2 kΩ series resistors between controller output and pins 2 (NPN base) and 6 (PNP base), sized to deliver 0.1–0.2 A base current at expected V_BE(sat) (1.1–1.2 V) and drive voltage (typically 12–15 V).

Is STD830CP40 RoHS-compliant and halogen-free?

Yes - the STD830CP40 is manufactured in ST's ECOPACK®-compliant DIP-8 package, meeting RoHS Directive 2011/65/EU and halogen-free requirements per IEC 61249-2-21. Full compliance documentation is available in ST's ECOPACK® database at www.st.com.