Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Nexperia USA Inc. BST62,115

Name: BST62,115
Brand: Nexperia USA Inc.
SKU: BST62,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BST62,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BST62,115.pdf

Description:: TRANS PNP DARL 80V 1A SOT-89

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:6,998

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BST62,115 from Nexperia (formerly Philips Semiconductors) is a PNP Darlington transistor in SOT89 package, designed for industrial switching with V_CEO = −80 V, I_C = −1 A DC, h_FE ≥ 2000 at −500 mA, and integrated base-emitter resistor/diode functionality. It drives solenoids, relays, and print hammers where high current gain and low saturation voltage are critical.

For engineers reviewing the BST62,115 datasheet, BST62,115 pinout, BST62,115 application, or BST62,115 equivalent, key selection criteria include verified Darlington gain stability at high collector current, thermal resistance (R_th(j-a) = 96 K/W), SOT89 collector-pad thermal performance, and −1.3 V V_CE(sat) at −500 mA/−0.5 mA drive.

Technical Context

This device implements a two-stage PNP Darlington configuration with monolithic integration of base-emitter clamping diode and series base resistor-reducing external component count in switching circuits. Its architecture delivers high DC current gain (h_FE ≥ 2000 @ I_C = −500 mA) while maintaining low V_CE(sat) (≤ −1.3 V) under rated drive conditions.

Thermal design relies on the SOT89's exposed collector pad (6 cm² copper area per spec), enabling 1.3 W total power dissipation at T_amb ≤ 25 °C. Switching performance is characterized with defined test circuit (R_B = 10 kΩ, R_C = 18 Ω), yielding t_on ≤ 500 ns and t_off ≤ 700 ns.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−80 V: Maximum continuous collector-emitter blocking voltage in open-base configuration.
I_C (DC)	−1 A: Sustained collector current capability without thermal runaway under PCB-mounted conditions.
h_FE	≥2000 @ I_C = −500 mA: Ensures minimal base drive current (≤0.5 mA) for full saturation in relay/solenoid loads.
V_CE(sat)	≤−1.3 V @ I_C/I_B = −500 mA/−0.5 mA: Limits conduction loss to <0.65 W at full load, critical for thermal management.
R_th(j-a)	96 K/W: Junction-to-ambient thermal resistance defines maximum allowable power dissipation on standard 6 cm² copper pad.
f_T	200 MHz: Transition frequency supports fast switching (t_on/t_off ≤ 700 ns) in pulse-driven industrial actuators.

Pinout & Package

SOT89 plastic surface-mount package with exposed collector pad for enhanced thermal transfer; 3-lead outline per IEC 60134, JEDEC TO-243, and JEITA SC-62 standards.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit node; internally connected to Darlington emitter output stage; requires low-impedance return path.
2	Collector	Main power output terminal; electrically tied to exposed metal pad for direct PCB heat sinking.
3	Base	Control input; includes integrated series resistor and clamping diode to ground for logic-level compatibility and ESD protection.

Key Features

Feature	Design Value
Integrated base resistor + clamp diode	Eliminates need for external bias network; enables direct TTL/CMOS interface with robust overvoltage protection.
High h_FE at high current	≥2000 at −500 mA ensures <0.5 mA base drive suffices for full saturation-reducing MCU GPIO loading.
Low V_CE(sat)	≤−1.3 V minimizes power loss in high-current switching (e.g., 24 V solenoid at 500 mA → 0.65 W dissipation).
SOT89 thermal pad	Exposed collector pad allows 1.3 W power handling on standard FR4 with 6 cm² copper, avoiding heatsink requirements.

Applications

Print Hammer Driver

DC Solenoid Control

Use Scenario: Driving electromagnetic print hammers in dot-matrix printers requiring rapid on/off cycling at 24–48 V.

IC Role / Device Role / Timing Role: High-gain PNP Darlington switch providing >500 mA peak current with <700 ns turn-off to enable precise character timing.

Use Value: Integrated base resistor eliminates timing skew from external RC networks; low V_CE(sat) prevents thermal throttling during burst operation.

Use Scenario: Controlling 12–24 V DC solenoids in industrial valves and pneumatic actuators.

IC Role / Device Role / Timing Role: Main power switch interfacing microcontroller GPIOs directly-no level-shifting or driver IC needed.

Use Value: Clamped base input withstands inductive kickback; 80 V V_CEO provides margin against flyback transients up to 60 V.

Relay Coil Driver

Lamp Load Switch

Use Scenario: Energizing 5–24 V coil relays in PLC I/O modules and machine control panels.

IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relay contacts-providing silent, wear-free switching with µs-level response.

Use Value: 1 A DC rating handles relay coils up to 24 V/500 mA; integrated diode suppresses back-EMF without external snubber.

Use Scenario: Switching incandescent or LED indicator lamps in HMI panels and instrumentation displays.

IC Role / Device Role / Timing Role: Low-power load switch with logic-compatible input, used where microcontroller pins lack sufficient sink current.

Use Value: 50 nA I_CES ensures near-zero standby leakage; SOT89 footprint fits compact front-panel layouts.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP Darlington switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZTX951	Higher V_CEO (−100 V), lower h_FE (min. 500 @ −500 mA), TO-92 package.	No integrated base resistor or clamp diode-requires external bias network and protection components.	Select when higher voltage margin is required and board space allows discrete support components.
MJD127	TO-220 package, higher I_C (−2 A), no integrated resistor/diode, V_CEO = −80 V.	Requires heatsink for >500 mA operation; lacks logic-level compatibility without external driver.	Choose for higher current (>1 A) or forced-air-cooled systems where SOT89 thermal limits are exceeded.

Compared with ZTX951 and MJD127, BST62,115 uniquely combines logic-level drive, integrated protection, and SOT89 thermal efficiency-making it optimal for space-constrained, medium-current industrial switches where bill-of-materials reduction matters.

Availability

BST62,115 is available at Aetrix Electronics and suitable for industrial automation, printer mechanisms, and embedded control systems requiring stable component supply across long-lifecycle production programs.

Supply support for BST62,115 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 in discrete, logic, and MOSFET devices, spun off from Philips in 2017 and headquartered in Nijmegen, Netherlands.

The BST62,115 belongs to Nexperia's legacy PNP Darlington portfolio, engineered specifically for industrial electromechanical load switching-prioritizing gain stability, thermal robustness, and integration of passive protection elements.

FAQ

What is the maximum safe operating temperature for BST62,115?

The BST62,115 has a maximum junction temperature (T_j) of 150 °C and storage temperature range of −65 °C to +150 °C. Under standard mounting (6 cm² copper pad), its thermal resistance R_th(j-a) = 96 K/W limits continuous power dissipation to 1.3 W at 25 °C ambient. Derating is required above 25 °C per the datasheet's thermal curve.

Does BST62,115 require an external flyback diode when driving inductive loads?

No-BST62,115 integrates a base-emitter clamping diode that provides inherent protection against inductive kickback from relay and solenoid coils. This eliminates the need for an external flyback diode in most standard 24 V industrial applications, reducing component count and PCB area.

Can BST62,115 be used as a direct replacement for BST61 or BST60?

Yes-BST62,115 shares identical SOT89 pinout and package with BST60/BST61 but offers higher voltage ratings (V_CEO = −80 V vs. −60 V/−45 V) and same gain/saturation characteristics. It is backward compatible in designs where increased blocking voltage improves reliability, especially in noisy industrial environments.

What is the typical switching speed of BST62,115 in a relay-driving circuit?

Per the datasheet test conditions (I_C = −500 mA, I_B = −0.5 mA), BST62,115 achieves t_on ≤ 500 ns and t_off ≤ 700 ns. In practical relay drivers, actual speeds depend on coil inductance and layout; however, the device reliably supports 1–5 kHz switching frequencies without saturation delay or thermal issues.

BST62,115 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP - Darlington

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 80 V

Vce Saturation (Max) @ Ib, Ic:: 1.3V @ 500µA, 500mA

Current - Collector Cutoff (Max):: 50nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 2000 @ 500mA, 10V

Power - Max:: 1.3 W

Frequency - Transition:: 200MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89

BST62,115 FAQ

1.How can I place an order for BST62,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BST62,115 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BST62,115 reliable?

The price and inventory of BST62,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BST62,115 is usually 5 days.

3.What payment methods are accepted for BST62,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BST62,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BST62,115?

BST62,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BST62,115 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BST62,115?

For technical support, including BST62,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BST62,115 requirements.

6.How does Aetrix verify that BST62,115 is sourced from the original manufacturer or authorized distributors?

All BST62,115 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BST62,115 meets industry standards.

7.What is the process for return or replacement of BST62,115?

All BST62,115 units undergo pre-shipment inspection (PSI). If there is an issue with BST62,115, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BST62,115 part is unused and in its original packaging.

Return procedure for BST62,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…