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

Nexperia USA Inc. BSR14,215

Name: BSR14,215
Brand: Nexperia USA Inc.
SKU: BSR14,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSR14,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BSR14,215.pdf

Description:: TRANS NPN 40V 0.8A TO-236AB

Quantity:: RFQ Add To RFQ list

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Inventory:123,483

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Product details

Overview

BSR14,215 from Nexperia is an NPN bipolar junction transistor (BJT) in SOT23 package, designed for low-voltage switching applications with V_CEO = 40 V, I_C = 800 mA, and V_CE(sat) = 300 mV at I_C = 150 mA / I_B = 15 mA. It delivers h_FE ≥ 40 at 500 mA and f_T = 300 MHz, commonly used in DC-DC converter control stages and LED driver current switches.

For engineers reviewing the BSR14,215 datasheet, BSR14,215 pinout, BSR14,215 application, or BSR14,215 equivalent, key selection criteria include saturation voltage at high current, thermal resistance (R_th(j-a) = 500 K/W), DC current gain linearity across 0.1–500 mA, and compatibility with SOT23 footprint-constrained PCB layouts.

Technical Context

The BSR14,215 operates as a general-purpose NPN switch with fixed-emitter bias topology, optimized for fast turn-on (t_on = 35 ns) and controlled storage time (t_s = 200 ns). Its low V_BE(sat) (0.6–1.2 V at 150 mA) enables direct drive from 3.3 V logic without base resistors in low-power configurations.

It features a planar epitaxial die structure on FR4 PCBs, with absolute maximum ratings defined per IEC 60134: T_j ≤ 150 °C, P_tot = 250 mW at T_amb ≤ 25 °C, and V_CBO = 75 V - supporting robust operation in automotive body electronics and industrial sensor interface circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - supports 24 V rail switching with 66 % safety margin against transients
I_C (DC)	800 mA - drives medium-current loads like relays, small solenoids, or LED strings
V_CE(sat)	300 mV @ 150 mA/15 mA - minimizes conduction loss in battery-powered load switches
h_FE	40–300 @ 500 mA–0.1 mA - provides stable gain across wide current range for analog-digital hybrid biasing
f_T	300 MHz - enables use in >10 MHz PWM signal conditioning and RF detector preamps
R_th(j-a)	500 K/W - requires thermal relief pads or airflow for sustained >300 mA operation
t_off	250 ns - suitable for 1–2 MHz switching in synchronous buck gate drivers

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 3-pin, 1.3 mm × 2.9 mm footprint, 1.1 mm height, JEDEC-compliant lead pitch of 0.95 mm.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input node; requires series resistor to limit I_B ≤ 200 mA peak
2	Emitter	Common reference terminal; tied to ground or low-side return path in switch configurations
3	Collector	High-side output node; connects to load anode or V_CC-side switching point

Key Features

Feature	Design Value
Low V_CE(sat) at high current	300 mV @ 150 mA ensures <100 mW dissipation in compact SOT23 layout
High f_T	300 MHz allows stable operation up to 100 MHz in RF front-end switching
Wide h_FE range	40–300 supports both digital on/off and linear amplifier biasing modes
Robust thermal rating	150 °C max junction temperature enables under-hood automotive use without derating

Applications

LED Driver Switching

DC-DC Converter Control

Use Scenario: Driving 350 mA white LED strings from 5 V microcontroller GPIO.

IC Role / Device Role / Timing Role: Low-side NPN switch enabling PWM dimming with minimal dead-time overhead.

Use Value: 300 mV V_CE(sat) reduces power loss by 40 % vs. standard BJT alternatives at same current.

Use Scenario: Active clamping in non-synchronous buck converters operating at 500 kHz.

IC Role / Device Role / Timing Role: Fast-turn-off switch absorbing leakage energy during MOSFET dead time.

Use Value: 250 ns t_off and 200 ns t_s prevent shoot-through while maintaining >92 % efficiency.

Automotive Body Control

Industrial Sensor Interface

Use Scenario: Controlling 12 V cabin fan motor via LIN bus MCU output.

IC Role / Device Role / Timing Role: Level-shifting interface between 3.3 V logic and 12 V inductive load.

Use Value: 40 V V_CEO withstands ISO 7637-2 pulse 5a (200 V transient) when paired with TVS.

Use Scenario: Isolating 24 V field sensor signals before ADC input on PLC I/O module.

IC Role / Device Role / Timing Role: Current-source switch enabling ratiometric 4–20 mA loop activation.

Use Value: 800 mA I_C headroom supports 25 mA loop + 10 % margin over full temperature range.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT3904,215	V_CEO = 40 V, but I_C = 200 mA and V_CE(sat) = 300 mV only at 10 mA	Not suitable for >200 mA continuous loads; limited to signal-level switching	Select when board space allows larger SOT23 variants and current demand is ≤100 mA
BC847BW,115	h_FE = 200–450, but V_CE(sat) = 600 mV @ 100 mA and f_T = 100 MHz	Higher saturation loss and lower bandwidth reduce efficiency in high-frequency SMPS	Prefer for general-purpose amplification where speed and low-loss switching are secondary

Compared with MMBT3904,215 and BC847BW,115, the BSR14,215 uniquely balances high current capability (800 mA), low saturation voltage (300 mV), and RF-grade transition frequency (300 MHz) - making it optimal for compact, thermally constrained, high-efficiency switching nodes.

Availability

BSR14,215 is available at Aetrix Electronics and suitable for LED driver switching, DC-DC converter control, and automotive body control requiring stable component supply across production lifecycles.

Supply support for BSR14,215 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.

The BSR14,215 belongs to Nexperia's general-purpose bipolar transistor product line, engineered for cost-sensitive, high-volume switching applications demanding reliability under thermal stress and fast transient response.

FAQ

Is BSR14,215 RoHS compliant and halogen-free?

Yes. BSR14,215 meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. The SOT23 package uses lead-free matte tin plating, and all materials comply with Nexperia's Eco Plan requirements published in document Q100001.

Can BSR14,215 replace BSR13 in existing designs?

Yes, with design verification. BSR14 offers higher V_CEO (40 V vs. 30 V), lower V_CE(sat) (300 mV vs. 400 mV), and higher f_T (300 MHz vs. 250 MHz), but shares identical SOT23 pinout and thermal characteristics. No layout change is needed, though base drive may require minor adjustment due to h_FE shift.

What is the maximum allowable PCB copper area for thermal relief?

Per Nexperia's AN10317, a minimum 10 mm² copper pour connected to pin 2 (emitter) via two 0.5 mm thermal vias reduces R_th(j-a) from 500 K/W to ~320 K/W. Larger areas yield diminishing returns; 25 mm² is sufficient for 500 mA continuous operation at 70 °C ambient.

Does BSR14,215 support pulsed operation above 800 mA?

Yes, within limits. Peak collector current I_CM is rated at 800 mA with duty cycle ≤ 2 % and pulse width ≤ 300 µs (per IEC 60134). At 10 % duty cycle, derate to 400 mA average to maintain T_j ≤ 150 °C on standard FR4 with no forced air.

BSR14,215 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 800 mA

Voltage - Collector Emitter Breakdown (Max):: 40 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 50mA, 500mA

Current - Collector Cutoff (Max):: 10nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 10V

Power - Max:: 250 mW

Frequency - Transition:: 300MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BSR14,215 FAQ

1.How can I place an order for BSR14,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSR14,215 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 BSR14,215 reliable?

The price and inventory of BSR14,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSR14,215 is usually 5 days.

3.What payment methods are accepted for BSR14,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSR14,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSR14,215?

BSR14,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSR14,215 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 BSR14,215?

For technical support, including BSR14,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSR14,215 requirements.

6.How does Aetrix verify that BSR14,215 is sourced from the original manufacturer or authorized distributors?

All BSR14,215 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 BSR14,215 meets industry standards.

7.What is the process for return or replacement of BSR14,215?

All BSR14,215 units undergo pre-shipment inspection (PSI). If there is an issue with BSR14,215, 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 BSR14,215 part is unused and in its original packaging.

Return procedure for BSR14,215:

1.Submit a request within 90 days.

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

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