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

Nexperia USA Inc. BCX70G,215

Name: BCX70G,215
Brand: Nexperia USA Inc.
SKU: BCX70G,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX70G,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCX70G,215.pdf

Description:: TRANS NPN 45V 0.1A TO-236AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,332

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Product details

Overview

BCX70G,215 from Nexperia is an NPN general-purpose bipolar junction transistor in SOT23 package, rated for 45 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 120–220 at I_C = 2 mA. It serves as a low-power switching or small-signal amplification device in discrete logic interfaces, sensor signal conditioning, and LED driver bias stages.

For engineers reviewing the BCX70G,215 datasheet, BCX70G,215 pinout, BCX70G,215 application, or BCX70G,215 equivalent, this part is selected for cost-sensitive, low-voltage (<45 V), low-current (<100 mA) linear and switching roles where thermal dissipation ≤250 mW and junction temperature ≤150 °C are design constraints.

Technical Context

This transistor operates in active, saturation, and cutoff regions with verified h_FE variation across three test conditions: 10 μA (low-current bias), 2 mA (typical small-signal), and 50 mA (higher-drive). Its f_T of 100–250 MHz confirms suitability for audio-frequency amplification and low-speed digital switching up to ~10 MHz.

Thermal resistance R_th(j-a) is 500 K/W on FR4 PCB, limiting continuous power handling without heatsinking. Low capacitance values-C_c = 1.7 pF and C_e = 11 pF-support stable high-impedance node interfacing and reduce Miller effect in common-emitter configurations.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - maximum collector-emitter voltage before breakdown; defines safe operating range in low-voltage supply rails
I_C (DC)	100 mA - continuous collector current limit; sets upper bound for load-driving capability
h_FE @ 2 mA	120–220 - DC current gain at typical bias; determines base drive resistor sizing for predictable switching
V_CE(sat) @ 10 mA	50–350 mV - saturation voltage drop; impacts power loss and output low-level voltage in switch applications
f_T	100–250 MHz - transition frequency; indicates usable bandwidth for small-signal amplification
R_th(j-a)	500 K/W - thermal resistance to ambient on FR4; requires derating above 25 °C ambient for sustained operation

Pinout & Package

BCX70G,215 is housed in a plastic surface-mounted SOT23 (TO-236AB) package, measuring 2.9 × 1.3 × 1.0 mm, with gull-wing leads optimized for reflow soldering on standard PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input terminal; requires series resistor to limit I_B and ensure h_FE-based I_C control
2	Emiter	Common reference terminal in common-emitter configuration; connected to ground or low-side return path
3	Collector	Output current terminal; sinks load current when saturated; connects to positive rail via load in switch mode

Key Features

Feature	Design Value
Low-voltage operation	Rated for V_CEO = 45 V - enables use in 3.3 V, 5 V, 12 V, and 24 V systems without overvoltage risk
Controlled h_FE spread	120–220 at I_C = 2 mA - supports consistent base resistor selection across production lots
Low saturation voltage	V_CE(sat) ≤ 350 mV @ 10 mA - minimizes conduction loss and improves efficiency in low-power switches
Small-outline packaging	SOT23 footprint - saves board space and supports high-density layouts in portable and IoT devices

Applications

LED Driver Bias Stage

Microcontroller GPIO Interface

Use Scenario: Driving indicator LEDs from 3.3 V or 5 V MCU outputs with current limiting.

IC Role / Device Role / Timing Role: NPN switch controlling LED anode-to-rail current path; base driven by MCU GPIO.

Use Value: V_CE(sat) ≤ 350 mV ensures >90% of supply reaches LED; h_FE ≥ 120 allows <10 µA GPIO sourcing for 1–5 mA LED current.

Use Scenario: Level-shifting or inverting logic signals between mixed-voltage domains (e.g., 1.8 V MCU to 5 V peripheral).

IC Role / Device Role / Timing Role: Discrete inverter or open-collector buffer using common-emitter topology.

Use Value: C_c = 1.7 pF and f_T ≥ 100 MHz support clean edge transitions up to 5 MHz without ringing or delay distortion.

Sensor Signal Pre-amplifier

Relay/Small Solenoid Driver

Use Scenario: Amplifying low-level analog output from thermistors, photodiodes, or bridge sensors.

IC Role / Device Role / Timing Role: Common-emitter small-signal amplifier with emitter degeneration for linearity.

Use Value: h_FE = 120–220 provides stable gain; low noise figure (2–6 dB) preserves SNR in sub-mV signal paths.

Use Scenario: Switching 12 V/24 V relay coils or miniature solenoids in industrial control modules.

IC Role / Device Role / Timing Role: Low-side switch sinking coil current; base driven via current-limiting resistor.

Use Value: I_C = 100 mA rating covers typical 20–80 mA coil loads; V_CEO = 45 V accommodates flyback spikes with minimal clamping.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC846B,215	Higher h_FE (200–450 @ 2 mA); identical SOT23 package and V_CEO/I_C ratings	Better suited for low-base-drive designs; same pinout enables direct substitution where higher gain is acceptable	Select when tighter h_FE tolerance or improved low-current gain is required
MMBT3904LT1G	Same V_CEO (40 V), slightly lower I_C (200 mA), but wider h_FE spread (100–300); RoHS-compliant variant	Compatible in most switching roles; may require recalculating base resistors due to h_FE variance	Choose for legacy compatibility or where ON Semiconductor sourcing is preferred

Compared with BCX70G,215, BC846B,215 offers higher and tighter h_FE for predictable low-drive switching, while MMBT3904LT1G provides broader gain range and alternate supply-chain assurance-both retain SOT23 pinout and operate within overlapping voltage/current boundaries.

Availability

BCX70G,215 is available at Aetrix Electronics and suitable for LED driver bias stages, microcontroller GPIO interfaces, sensor pre-amplifiers, and relay/solenoid drivers requiring stable component supply and long-term manufacturability.

Supply support for BCX70G,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, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.

The BCX70 series belongs to Nexperia's general-purpose bipolar transistor product line, designed specifically for cost-effective, reliable low-power switching and amplification in high-volume consumer and industrial electronics.

FAQ

Is BCX70G,215 RoHS compliant?

Yes, BCX70G,215 is RoHS compliant and meets EU Directive 2011/65/EU requirements. Nexperia confirms compliance for all BCX70 series parts manufactured after 2006, including lead-free terminations and halogen-free molding compounds per standard SOT23 assembly processes.

What is the maximum operating temperature for BCX70G,215?

The maximum junction temperature (T_j) is 150 °C, and the storage temperature range is −65 °C to +150 °C. Ambient operating temperature spans −65 °C to +150 °C, but power dissipation must be derated above 25 °C using R_th(j-a) = 500 K/W on FR4 PCB.

Does BCX70G,215 have a PNP complement?

Yes, the BCX71 series (e.g., BCX71G,215) is the designated PNP complement to the BCX70 series. Both share identical SOT23 package dimensions, voltage/current ratings, and thermal characteristics, enabling matched pair use in push-pull or differential circuits.

Can BCX70G,215 replace BC847 in existing designs?

BCX70G,215 can substitute BC847 in many low-current switching roles, but h_FE is lower (120–220 vs. 200–450) and V_CEO is higher (45 V vs. 45 V nominal, though BC847 is typically rated 45 V). Verify base drive and saturation voltage margins, especially at I_C > 20 mA.

BCX70G,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):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 550mV @ 1.25mA, 50mA

Current - Collector Cutoff (Max):: 20nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 120 @ 2mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: 250MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BCX70G,215 FAQ

1.How can I place an order for BCX70G,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX70G,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 BCX70G,215 reliable?

The price and inventory of BCX70G,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX70G,215 is usually 5 days.

3.What payment methods are accepted for BCX70G,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX70G,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX70G,215?

BCX70G,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX70G,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 BCX70G,215?

For technical support, including BCX70G,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX70G,215 requirements.

6.How does Aetrix verify that BCX70G,215 is sourced from the original manufacturer or authorized distributors?

All BCX70G,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 BCX70G,215 meets industry standards.

7.What is the process for return or replacement of BCX70G,215?

All BCX70G,215 units undergo pre-shipment inspection (PSI). If there is an issue with BCX70G,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 BCX70G,215 part is unused and in its original packaging.

Return procedure for BCX70G,215:

1.Submit a request within 90 days.

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

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