onsemi 2SA2210

Overview

2SA2210 from onsemi is a PNP bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications, featuring a maximum collector-emitter voltage of −150 V, continuous collector current of −1.5 A, DC current gain (h_FE) of 70–240 at I_C = −150 mA, and power dissipation of 2 W in TO-220AB package. It is commonly used in high-voltage linear regulators and relay drivers.

For engineers reviewing the 2SA2210 datasheet, pinout, applications, or equivalent options, key selection criteria include its PNP polarity, −150 V V_CEO, TO-220AB thermal performance, h_FE range at specified bias points, and safe operating area (SOA) compliance per JEDEC JESD24.

Technical Context

The 2SA2210 operates as a medium-power PNP BJT with epitaxial planar structure and built-in base-emitter shunt resistor. Its SOA is defined up to T_C = 25 °C with second breakdown limits specified across pulse width and duty cycle.

It supports linear-mode operation with guaranteed h_FE at I_C = −150 mA and V_CE = −2 V, and exhibits typical output capacitance (C_obo) of 45 pF at V_CB = −10 V, enabling stable performance in audio preamplifier and DC-DC converter error amplifier stages.

Key Specifications

Pinout & Package

2SA2210 is housed in a TO-220AB plastic package with integral heat sink tab, rated for 2 W dissipation at T_C = 25 °C and requiring mechanical mounting via the collector-connected tab.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 2SA2210, 2SA1943 offers greater voltage and current headroom but requires mechanical redesign, while MJD2955 enables surface-mount integration at the cost of thermal performance and peak current capability.

Availability

2SA2210 is available at Aetrix Electronics and suitable for industrial power supplies, relay interface modules, and analog audio equipment requiring stable component supply and long-term manufacturability.

Supply support for 2SA2210 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The 2SA2210 belongs to onsemi's general-purpose bipolar transistor product line, engineered for reliable high-voltage linear and switching operation in cost-sensitive industrial and consumer power systems.

FAQ

What is the maximum safe collector-emitter voltage for the 2SA2210?

The 2SA2210 has a maximum collector-emitter voltage rating (V_CEO) of −150 V under open-base conditions. This value is tested per JEDEC JESD24 and defines the absolute upper limit before avalanche breakdown occurs. Operating above this voltage risks irreversible device failure, even for short durations. The 2SA2210 datasheet specifies derating curves for V_CEO at elevated temperatures, and actual design margins should maintain at least 20% below −150 V in transient-prone environments.

Does the 2SA2210 have a built-in base-emitter resistor?

No, the 2SA2210 does not integrate a base-emitter shunt resistor. It is a standard three-terminal PNP BJT requiring external base bias components. Unlike digital transistors (BRTs), the 2SA2210 relies on discrete resistors for turn-on/turn-off control and saturation assurance. This gives designers full flexibility in setting base current but mandates careful calculation of R_B to ensure sufficient drive under worst-case h_FE and temperature conditions.

Can the 2SA2210 be used in audio amplifier output stages?

The 2SA2210 is not recommended for high-power audio output stages due to its 2 W power dissipation limit and lack of complementary NPN pairing in the same package. While it functions reliably in preamplifier or driver sub-stages-especially where its −150 V rating supports wide supply rails-the 2SA2210 lacks the SOA robustness and thermal mass needed for sustained high-current, high-voltage swing operation typical of final output devices.

What is the thermal resistance from junction to case (R_θJC) for the 2SA2210?

The 2SA2210 has a junction-to-case thermal resistance (R_θJC) of 3.5 °C/W when mounted with proper mechanical torque and thermal interface material on a heatsink. This value is measured with the collector tab fully contacting the heatsink surface and reflects the dominant conductive path in TO-220AB packaging. Effective heatsinking using this R_θJC enables the 2SA2210 to sustain its full 2 W rating at T_C = 25 °C, but system-level R_θJA must account for heatsink efficiency and ambient airflow.

Is the 2SA2210 RoHS compliant and halogen-free?

Yes, the 2SA2210 is RoHS compliant and halogen-free per onsemi's material declarations. It meets EU Directive 2011/65/EU and satisfies IEC 61249-2-21 requirements for brominated flame retardants and chlorine content. Full compliance documentation-including substance declarations and test reports-is available through onsemi's Quality & Reliability portal using the official part number 2SA2210 and its associated date code and lot traceability data.