onsemi SOP8501-TL-E

Overview

SOP8501-TL-E from onsemi is a dual high-voltage bipolar transistor array in a single SOP-8 package, integrating one PNP (V_CEO = −400 V, I_C = −1 A) and one NPN (V_CEO = 400 V, I_C = 0.2 A) silicon transistor for complementary switching. It delivers linear h_FE, 50–70 MHz f_T, and fast switching (t_on = 0.25 µs) in high-voltage driver circuits such as flyback power supplies and motor gate drivers.

For engineers reviewing the SOP8501-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified dual-transistor breakdown voltage symmetry (±400 V), validated thermal derating on ceramic board (P_T = 1.6 W), confirmed SOP-8 terminal mapping with isolated collector pairs, and documented switching timing under pulsed 150 V conditions.

Technical Context

The SOP8501-TL-E implements a monolithic dual-die configuration with electrically isolated PNP and NPN transistors sharing no internal substrate connection. Each transistor features epitaxial planar (PNP) or triple-diffused planar (NPN) construction, enabling independent biasing and simultaneous high-side/low-side switching without cross-conduction risk.

Its rated V_(BR)CEO = ±400 V and low output capacitance (C_ob = 4–12 pF) support operation in >300 V DC-link applications. The asymmetric current ratings (−1 A PNP / +0.2 A NPN) reflect optimized die sizing for high-voltage PNP sourcing and NPN sinking in asymmetrical load topologies.

Key Specifications

Pinout & Package

Package: SOP-8 (SANYO standard), 4.4 mm × 6.0 mm × 1.8 mm max height, 1.27 mm pitch, plastic body with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage complementary transistor applications.

Compared with BD679A-D2-13 and ST13007D, the SOP8501-TL-E uniquely integrates matched ±400 V PNP+NPN transistors in one SOP-8 footprint, eliminating inter-device timing skew and reducing PCB area by >60% versus discrete solutions - critical for compact flyback and relay driver designs.

Availability

SOP8501-TL-E is available at Aetrix Electronics and suitable for AC-DC flyback controllers, industrial relay drivers, and motor gate driver stages requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for SOP8501-TL-E 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 supplier specializing in energy-efficient power management, signal processing, and sensing technologies for automotive, industrial, and cloud infrastructure markets.

The SOP8501-TL-E belongs to onsemi's high-voltage discrete transistor portfolio, engineered specifically for compact, reliable high-side/low-side switching in off-line power conversion and industrial control interfaces.

FAQ

What is the maximum safe operating voltage for SOP8501-TL-E in continuous DC mode?

The SOP8501-TL-E is rated for V_(BR)CEO = ±400 V under specified test conditions (I_C = ±1 mA, R_BE = ∞). For continuous DC operation, derating per the PT vs. Ta curve on page 4 is required: at 25°C ambient, maximum continuous V_CE must be limited to maintain junction temperature ≤150°C given actual power dissipation. SOP8501-TL-E should not be operated above 350 V DC without active thermal management.

Can SOP8501-TL-E drive a MOSFET gate directly without a buffer stage?

Yes, SOP8501-TL-E can directly drive small-to-medium gate charge MOSFETs (Q_g < 20 nC) at ≤100 kHz due to its 0.25 µs t_on, ±1 A peak current capability, and low V_CE(sat). However, for fast-switching or high-Q_g devices, an external gate resistor (10–47 Ω) is recommended to damp ringing and limit di/dt. SOP8501-TL-E's dual-collector pins (pins 7/8 and 5/6) help minimize inductive kick during turn-off.

How are the dual collector pins (5/6 and 7/8) intended to be used in PCB layout?

Pins 5 and 6 are internally connected to the NPN collector; pins 7 and 8 to the PNP collector. They must be routed in parallel with equal-length, low-inductance traces to ensure current sharing and thermal balance. Splitting them across separate copper pours or adding vias under each pin improves heat spreading. SOP8501-TL-E's thermal performance degrades by >15% if only one collector pin per transistor is used.

Does SOP8501-TL-E support linear (analog) operation, or is it optimized only for switching?

SOP8501-TL-E supports both modes: its linear h_FE profile (documented on page 3) and low V_CE(sat) make it suitable for analog current sources and amplifiers up to 100 kHz, while its fast t_on/t_f and low C_ob optimize it for switching. In linear use, keep power dissipation below 0.8 W at 25°C ambient; in switching, limit duty cycle per the I_CP = ±2 A / 0.4 A pulse rating on page 1. SOP8501-TL-E's SOA curves confirm safe operation in both regions.

Is SOP8501-TL-E RoHS compliant and halogen-free?

Yes, SOP8501-TL-E meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. The "-TL-E" suffix denotes tape-and-reel packaging with lead-free (Pb-free) terminations and green molding compound. Full compliance documentation, including IMDS and IPC-1752 data, is available from onsemi's product change notices for SOP8501-D.