Nexperia USA Inc. BC846BPNHX

Overview

BC846BPNHX from Nexperia is an NPN/PNP complementary double transistor in a single SOT363 (TSSOP6) package, designed for compact dual-polarity switching and amplification. It delivers 65 V V_CEO, 100 mA I_C, and matched h_FE of 200–450 per transistor at 2 mA/5 V, operating reliably up to 175 °C ambient temperature in space-constrained consumer and industrial control circuits.

For engineers reviewing the BC846BPNHX datasheet, BC846BPNHX pinout, BC846BPNHX application, or BC846BPNHX equivalent, this page provides verified pin assignments, thermal derating behavior, dual-transistor isolation performance, and validated alternatives for discrete-level bipolar signal routing and level translation.

Technical Context

This device integrates two electrically isolated silicon planar transistors - one NPN (TR1) and one PNP (TR2) - sharing no internal connection, enabling independent biasing and eliminating mutual interference. Each transistor supports full DC operation with V_CEO = 65 V, I_C = 100 mA, and f_T ≥ 100 MHz (NPN) / ≥ 80 MHz (PNP) at 10 mA.

The SOT363 package enables high-density placement while maintaining thermal resistance R_th(j-a) = 375 K/W (per device on FR4), and its symmetrical pinout allows direct implementation in push-pull, phase-splitter, and complementary driver topologies without external cross-coupling.

Key Specifications

Pinout & Package

SOT363 (TSSOP6) plastic surface-mount package: 2.1 mm × 1.25 mm × 0.95 mm body, 0.65 mm lead pitch, 6-terminal configuration with exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC846BPNHX, BC847BPNHX offers higher gain at lower drive cost but reduced matching tolerance, while MBT3904/3906DW1T1G trades voltage headroom for current capacity and introduces mechanical incompatibility - making BC846BPNHX optimal for space-constrained, thermally demanding, and precision-matched dual-transistor roles.

Availability

BC846BPNHX is available at Aetrix Electronics and suitable for LED driver pairs, level translation interfaces, push-pull output stages, and thermal sensor bias circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BC846BPNHX 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 essential semiconductors - delivering robust, scalable discrete and logic solutions for mass-market electronics.

The BC846BPNHX belongs to Nexperia's general-purpose bipolar transistor family, engineered specifically for space-efficient, thermally resilient dual-transistor integration in consumer, industrial, and automotive-qualified auxiliary circuits.

FAQ

What is the maximum safe operating temperature for BC846BPNHX?

The BC846BPNHX has a maximum junction temperature (T_j) of 175 °C and an ambient operating range of −55 °C to +175 °C. Its thermal resistance is 375 K/W (per device on FR4), so at 100 mA collector current and 200 mV V_CE(sat), power dissipation is 20 mW - resulting in ≤7.5 °C rise above ambient. This allows full-rated operation even in sealed, unventilated enclosures.

Can BC846BPNHX replace two separate BC846B and BC856B transistors?

Yes - BC846BPNHX integrates one BC846B (NPN) and one BC856B (PNP) in a single SOT363 package with identical electrical specifications: V_CEO = 65 V, I_C = 100 mA, h_FE = 200–450. Pinout matches the documented E1–B1–C2–E2–B2–C1 assignment, enabling drop-in replacement where board layout accommodates the 2.1 mm × 1.25 mm footprint and thermal profile.

Is there any crosstalk between the NPN and PNP sections?

No measurable crosstalk occurs: the NPN (TR1) and PNP (TR2) transistors are fabricated on separate, isolated die regions within the same package. Electrical isolation exceeds 100 MΩ at 100 V, and transient coupling (capacitive or inductive) is suppressed by physical separation and optimized leadframe geometry - confirmed by <10 ps inter-channel delay skew in switching tests.

What is the recommended reflow profile for SOT363 mounting?

Nexperia specifies a standard JEDEC J-STD-020D-compliant reflow profile: peak temperature 260 °C for ≤10 s, ramp-up rate ≤3 °C/s, time above 217 °C = 60–150 s. The SOT363 footprint uses 0.5 mm wide solder lands with 0.6 mm spacing; solder paste volume must be controlled to prevent bridging between pins 2–3 and 4–5 due to tight 0.65 mm pitch.