PBSS305PZ Nexperia Integrated Circuit (SOT223 (3-Pin)) In Stock
Nexperia PBSS305PZ is a PNP bipolar junction transistor rated at 4.5 A collector current and 80 V collector-emitter voltage with a minimum DC current gain (hFE) of 30 and 100 MHz transition frequency in a 4-pin SC-73 surface mount package. Its high current capacity and compact footprint suit motor drive and load switch applications. Available from stock with worldwide shipping.
- Manufacturer
- Nexperia
- Package
- SOT223 (3-Pin)
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- PBSS305PZ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4.5 A collector current and 80 V V_CE rating enables direct use as a high-side PNP load switch or motor drive output stage without external protection components
- Minimum hFE of 30 at rated current ensures reliable saturation with base drive currents as low as 150 mA in high-current switching circuits
- 100 MHz transition frequency and 90 pF collector-base capacitance support medium-frequency switching applications up to tens of kilohertz
Applications
The PBSS305PZ is used as a high-side load switch, motor drive output transistor, and reverse-polarity protection device in automotive, industrial, and consumer electronics where PNP switching of 4.5 A at up to 80 V is required. Its 4-pin SC-73 package with collector-connected thermal pad allows efficient heat dissipation in DC motor control, solenoid driver, and battery protection circuits. The 100 MHz fT also makes it suitable for audio amplifier output stages and linear regulator pass transistors in low-dropout voltage regulator designs.
Specifications
| Date Of Intro | 2017-02-01 |
| YTEOL | 4 |
| Case Connection | COLLECTOR |
| Collector Current-Max (IC) | 4.5A |
| Collector-Base Capacitance-Max | 90pF |
| Collector-Emitter Voltage-Max | 80V |
| Configuration | SINGLE |
| DC Current Gain-Min (hFE) | 30 |
| JESD-30 Code | R-PDSO-G4 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity/Channel Type | PNP |
| Power Dissipation-Max (Abs) | 2W |
| Reference Standard | IEC-60134 |
| Surface Mount | YES |
| Terminal Finish | TIN |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Transition Frequency-Nom (fT) | 100MHz |
| VCEsat-Max | 0.45V |
| Package | SOT223 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum collector current and voltage rating of the PBSS305PZ, and which switching topologies does this support?
The PBSS305PZ is rated for a maximum collector current of 4.5 A and a collector-emitter voltage (V_CE) of 80 V. These ratings make it suitable for PNP high-side switching topologies controlling resistive loads up to 360 W at 80 V, DC motor driver H-bridges with unipolar 12 V to 48 V supplies, and battery protection circuits in Li-ion packs operating up to 60 V, with margin for voltage transients and inductive spikes.
How does the minimum hFE of 30 affect base drive requirements in a PBSS305PZ load switch design?
With a minimum hFE of 30 at 4.5 A collector current, the PBSS305PZ requires a base drive current of at least 150 mA to ensure hard saturation and low V_CE_sat at full load. Designers should size the base resistor to supply at least 200 mA for margin, especially at low temperatures where hFE can drop further. For MCU-driven switches, an intermediate NPN transistor or gate driver IC is typically needed since most MCU GPIO pins source no more than 20 mA.
What is the SC-73 package of PBSS305PZ, and how does the 4-pin layout help with thermal management?
The SC-73 (SOT-223) is a 4-pin surface mount package where the 4th pin and the back thermal pad are both connected to the collector. This dual-contact collector connection reduces thermal resistance to the PCB by providing two solder fillets that conduct heat to the copper plane. The exposed thermal pad enables effective heat spreading through the PCB copper pour, allowing the PBSS305PZ to dissipate more than 1 W continuously on a standard FR4 board with a 1 cm² copper heat spreader.
When should a designer use the PBSS305PZ PNP transistor rather than a P-channel MOSFET for a 12 V, 3 A high-side switch?
A designer might prefer the PBSS305PZ over a P-channel MOSFET when the gate drive voltage for a P-channel device is unavailable or inconvenient. PNP BJTs turn on when the base is pulled approximately 0.7 V below the emitter, making them directly drivable from open-collector NPN stages without needing a full negative-to-positive swing drive circuit. At 3 A and 12 V, the PBSS305PZ's V_CE_sat of typically 0.3 V to 0.5 V may also produce lower conduction loss than a P-channel MOSFET with R_DS_on above 0.1 Ω.
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