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

Nexperia USA Inc. BCV26,235

Name: BCV26,235
Brand: Nexperia USA Inc.
SKU: BCV26,235
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCV26,235

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCV26,235.pdf

Description:: TRANS PNP DARL 30V 0.5A TO-236AB

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Product details

Overview

BCV26,235 from Nexperia is a PNP Darlington transistor in SOT23 package, designed for high-gain switching and amplification with V_CEO = −30 V, I_C = −500 mA, h_FE ≥ 10,000 at I_C = −10 mA, and V_CE(sat) ≤ −1 V. It serves as a compact, low-power interface driver in battery-powered sensor signal conditioning circuits.

For engineers reviewing the BCV26,235 datasheet, BCV26,235 pinout, BCV26,235 application, or BCV26,235 equivalent, key selection criteria include verified Darlington gain stability across −1 mA to −100 mA, SOT23 thermal resistance (R_th(j-a) = 500 K/W), and complementary NPN pairing with BCV27 for push-pull output stages.

Technical Context

This device implements a monolithic PNP Darlington pair with integrated base-emitter resistor network absent - requiring external base current control. Its high h_FE (up to 20,000) enables microampere-level drive capability while maintaining V_BE(sat) ≤ −1.5 V at I_C = −100 mA.

It operates within −65 °C to +150 °C ambient range, with absolute maximum V_CBO = −40 V and power dissipation limited to 250 mW on FR4 PCB. The SOT23 footprint supports automated placement in space-constrained industrial control modules.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−30 V: Maximum safe collector-emitter voltage under open-base condition for reliable switching in 24 V industrial logic interfaces.
I_C (DC)	−500 mA: Continuous collector current rating enabling direct drive of small relays or LED arrays without heatsinking.
h_FE (min)	10,000 at I_C = −10 mA: Ensures <10 µA base current suffices for 100 mA load switching - critical for ultra-low-power microcontroller GPIO interfacing.
V_CE(sat)	≤ −1 V at I_C = −100 mA / I_B = −0.1 mA: Minimizes conduction loss in battery-operated load switches, preserving >95% efficiency at 3.3 V supply.
R_th(j-a)	500 K/W: Thermal resistance on FR4 board confirms self-heating remains below 125 °C junction rise at full 250 mW dissipation - no derating needed below 70 °C ambient.
f_T	220 MHz: Transition frequency supports stable operation up to ~10 MHz square-wave switching - sufficient for PWM dimming and digital signal buffering.

Pinout & Package

SOT23 plastic surface-mounted package (TO-236AB), 3-pin, 1.3 mm × 2.9 mm footprint, 0.95 mm height, JEDEC-compliant outline per issue date 06-03-16.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring externally sourced negative current; no internal bias resistor - enables precise gain and speed tuning via external R_B.
2	Emitter	Common reference terminal tied to higher potential rail; polarity defines PNP operation - connects to V_CC in high-side switch configurations.
3	Collector	Output terminal sinking current to ground or lower-potential node; rated for −30 V blocking and −500 mA continuous conduction.

Key Features

Feature	Design Value
Very high DC current gain	h_FE ≥ 10,000 at I_C = −10 mA ensures microcontroller GPIOs with 5 mA drive capability can switch 100 mA loads without buffer stages.
Low saturation voltage	V_CE(sat) ≤ −1 V minimizes power loss in always-on or duty-cycled load drivers - critical for thermal management in sealed enclosures.
Compact SOT23 package	Standardized 3-pin footprint enables drop-in replacement in legacy designs and compatibility with high-speed pick-and-place equipment.
Wide operating temperature	−65 °C to +150 °C T_amb rating supports deployment in automotive engine compartments and industrial motor control cabinets.

Applications

Industrial Sensor Interface

Low-Power Relay Driver

Use Scenario: Amplifying weak analog signals from thermistors or strain gauges before ADC sampling in programmable logic controllers.

IC Role / Device Role / Timing Role: PNP Darlington configured as emitter-follower buffer with unity voltage gain and high input impedance.

Use Value: h_FE ≥ 10,000 allows single-stage amplification without op-amp biasing complexity - reducing BOM count and layout area.

Use Scenario: Driving 12 V/400 mA electromagnetic relays from 3.3 V microcontroller outputs in HVAC control panels.

IC Role / Device Role / Timing Role: High-gain saturated switch turning relay coil on/off with minimal GPIO current draw.

Use Value: V_CE(sat) ≤ −1 V limits relay coil power loss to <130 mW - preventing thermal runaway during continuous 24/7 operation.

Battery-Powered Smoke Detector

Push-Pull Output Stage

Use Scenario: Controlling piezoelectric alarm buzzer activation using coin-cell battery (3 V) with strict quiescent current budget.

IC Role / Device Role / Timing Role: Low-I_B switching element enabling <5 µA standby current when paired with high-value base resistor.

Use Value: h_FE ≥ 20,000 at I_C = −1 mA permits 100 kΩ base resistor - extending battery life beyond 5 years in sleep mode.

Use Scenario: Complementary output stage with BCV27 (NPN) in analog audio line driver for portable medical monitors.

IC Role / Device Role / Timing Role: PNP half of Class AB emitter-follower pair delivering symmetrical ±100 mA peak output swing.

Use Value: Matched gain and saturation characteristics with BCV27 ensure low crossover distortion (<0.5%) at 20 kHz bandwidth.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCV27,235	NPN complement; identical SOT23 package, same h_FE min, but opposite polarity and V_CEO = +30 V.	Required where sourcing (not sinking) current is needed - e.g., high-side LED anode control instead of low-side cathode switching.	Select BCV27 only when circuit topology mandates NPN configuration; not a functional substitute in PNP-biased networks.
MMBT6427LT1G	PNP Darlington in SOT23; h_FE ≥ 7,500 @ I_C = −10 mA, V_CEO = −30 V, but V_CE(sat) = −1.3 V (higher loss).	Acceptable where gain margin >7,500 suffices and thermal headroom exists - e.g., non-continuous duty-cycle loads.	Choose only if BCV26,235 is unavailable; verify V_CE(sat) impact on system efficiency and junction temperature rise.

Compared with BCV27,235 and MMBT6427LT1G, BCV26,235 delivers superior gain consistency across operating current and lowest saturation voltage - making it optimal for precision low-power switching where base drive current and thermal budget are tightly constrained.

Availability

BCV26,235 is available at Aetrix Electronics and suitable for industrial sensor interface, low-power relay driver, and battery-powered smoke detector applications requiring stable component supply and long-term obsolescence management.

Supply support for BCV26,235 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.

BCV26,235 belongs to Nexperia's standard bipolar transistor portfolio, engineered for high-reliability, cost-sensitive applications demanding proven Darlington performance in miniature SOT23 packaging.

FAQ

Is BCV26,235 pin-compatible with BCV46,235?

No. While both are PNP Darlington transistors in SOT23 packages, BCV46,235 has V_CEO = −60 V and h_FE ≥ 4,000 at I_C = −10 mA - lower gain and higher voltage rating. Pin numbering is identical (1=base, 2=emitter, 3=collector), but substituting BCV26,235 for BCV46,235 risks premature breakdown in 48 V systems.

What is the maximum allowable base current for continuous operation?

The absolute maximum DC base current is −100 mA per the datasheet limiting values table. However, typical design practice limits I_B to ≤ −1 mA for I_C ≤ −100 mA to avoid excessive power dissipation in the base region and maintain h_FE linearity - confirmed by Fig.2 showing gain degradation above −10 mA I_B.

Does BCV26,235 include built-in base-emitter resistors?

No. BCV26,235 is a bare Darlington pair without integrated bias resistors. External base current must be supplied through a series resistor or active driver - unlike digital transistors (e.g., EMH series) which integrate R₁/R₂. This provides full design flexibility but requires explicit base network design.

Can BCV26,235 be used in linear amplifier mode?

Yes, but with caution. Its high h_FE and f_T = 220 MHz support small-signal amplification, yet the datasheet characterizes only switching parameters (V_CE(sat), h_FE) and lacks linearity specs (THD, output impedance). For linear use, operate at I_C ≤ −1 mA and V_CE ≥ −5 V to stay within the typical h_FE curve's flat region shown in Fig.2.

BCV26,235 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:: PNP - Darlington

Current - Collector (Ic) (Max):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 30 V

Vce Saturation (Max) @ Ib, Ic:: 1V @ 100µA, 100mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 20000 @ 100mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: 220MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BCV26,235 FAQ

1.How can I place an order for BCV26,235 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCV26,235 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 BCV26,235 reliable?

The price and inventory of BCV26,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCV26,235 is usually 5 days.

3.What payment methods are accepted for BCV26,235?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCV26,235 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCV26,235?

BCV26,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCV26,235 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 BCV26,235?

For technical support, including BCV26,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCV26,235 requirements.

6.How does Aetrix verify that BCV26,235 is sourced from the original manufacturer or authorized distributors?

All BCV26,235 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 BCV26,235 meets industry standards.

7.What is the process for return or replacement of BCV26,235?

All BCV26,235 units undergo pre-shipment inspection (PSI). If there is an issue with BCV26,235, 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 BCV26,235 part is unused and in its original packaging.

Return procedure for BCV26,235:

1.Submit a request within 90 days.

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

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