Infineon Technologies BC80740B5003XT

Overview

BC80740B5003XT from Nexperia is a PNP silicon general-purpose audio-frequency transistor with h_FE = 250–400 (at I_C = 100 mA, V_CE = 1 V), V_CEO = 45 V, I_C = 500 mA, and V_CE(sat) ≤ 0.7 V (at I_C = 500 mA, I_B = 50 mA), used in low-voltage switching and linear amplification stages of automotive body control modules and industrial sensor interface circuits.

For engineers reviewing the BC80740B5003XT datasheet, BC80740B5003XT pinout, BC80740B5003XT application, or BC80740B5003XT equivalent, key selection criteria include DC current gain group (h_FE-grp. 40), SOT323 package thermal resistance (R_thJS ≤ 80 K/W), saturation voltage under high-current drive, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This PNP bipolar junction transistor operates in active, saturation, and cutoff regions with defined breakdown limits: V_(BR)CEO = 45 V (min), V_(BR)CBO = 50 V (min), and V_(BR)EBO = 5 V (min). Its f_T = 200 MHz (typ) supports moderate-speed switching up to ~10 MHz in practical designs.

Thermal performance is specified for two variants: BC807/BC808 (R_thJS ≤ 215 K/W) and BC807W/BC808W (R_thJS ≤ 80 K/W); BC80740B5003XT belongs to the W-series, indicating SOT323 package and enhanced thermal dissipation at T_S ≤ 130 °C.

Key Specifications

Pinout & Package

BC80740B5003XT is housed in a RoHS-compliant SOT323 (SC-70) plastic surface-mount package with standard three-terminal configuration and 1.3 mm × 2.1 mm footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP general-purpose transistor applications.

Compared with BC807-40W,115, BC80740B5003XT offers identical electrical and thermal behavior but distinct reel marking; versus MMBT4403LT1G, it delivers higher voltage margin, tighter h_FE distribution, superior thermal performance, and automotive qualification-critical for safety-critical or high-reliability deployments.

Availability

BC80740B5003XT is available at Aetrix Electronics and suitable for automotive interior lighting control, industrial sensor signal conditioning, and consumer appliance motor driver applications requiring stable component supply and long-term lifecycle assurance.

Supply support for BC80740B5003XT 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

BC80740B5003XT belongs to the BC807/BC808 family of general-purpose PNP transistors designed specifically for robust, cost-effective switching and amplification in automotive body electronics and industrial control systems.

FAQ

Is BC80740B5003XT pin-compatible with BC807-40W?

Yes, BC80740B5003XT uses the same SOT323 package and identical pin configuration (1=B, 2=E, 3=C) as BC807-40W. Both share identical maximum ratings, electrical characteristics, and thermal specifications. The suffix difference reflects internal Nexperia traceability coding, not functional variation.

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current (I_B) is 100 mA, and peak base current (I_BM) is 200 mA. For reliable continuous operation at I_C = 500 mA, design base drive to maintain I_B ≥ 50 mA (h_FE min ≈ 10) while ensuring power dissipation in the base-emitter junction remains within limits.

Does BC80740B5003XT support operation at −40 °C?

Yes, BC80740B5003XT is fully characterized from −65 °C to 150 °C. Electrical parameters including h_FE, V_CE(sat), and leakage currents are guaranteed across this full storage temperature range, and its AEC-Q101 qualification confirms operational reliability at −40 °C ambient in automotive environments.

Can BC80740B5003XT replace an NPN transistor like BC817-40 in the same circuit?

No-BC80740B5003XT is a PNP device and cannot directly substitute for an NPN transistor without inverting the circuit topology. Replacing BC817-40 (NPN) would require flipping biasing polarity, reversing supply connections, and revalidating gain, saturation, and timing behavior; complementary pairing is intended for matched push-pull or differential designs, not drop-in replacement.