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

Nexperia USA Inc. BCX71H,215

Name: BCX71H,215
Brand: Nexperia USA Inc.
SKU: BCX71H,215
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX71H,215

Manufacturer:: Nexperia USA Inc.

Category:: Single Bipolar Transistors

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

Datasheet:: BCX71H,215.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX71H,215 from Nexperia is a PNP general-purpose bipolar junction transistor in SOT23 package, rated for −45 V V_CEO, −100 mA I_C, and 250 mW P_tot, with DC current gain (h_FE) of 30–310 at I_C = −10 μA to −50 mA, used in low-noise, low-frequency amplification and switching in hybrid analog circuits.

For engineers reviewing the BCX71H,215 datasheet, BCX71H,215 pinout, BCX71H,215 application, or BCX71H,215 equivalent, key selection factors include its PNP polarity, SOT23 thermal resistance (500 K/W), noise figure (2–6 dB), transition frequency (100 MHz), and complementary NPN pairing with BCX70 series.

Technical Context

This discrete PNP BJT operates in linear amplification and saturated switching modes, with base-emitter and collector-base junctions optimized for low-noise performance at sub-100 kHz signal levels. Its h_FE variation across bias points (30 at −10 μA, 180–310 at −2 mA, 80 at −50 mA) supports design flexibility in emitter-follower and common-emitter configurations.

The device exhibits low capacitance (C_c = 4.5 pF, C_e = 11 pF) and fast switching capability enabled by f_T = 100 MHz, while maintaining robust absolute maximum ratings: −45 V V_CBO/V_CEO, −5 V V_EBO, and T_j ≤ 150 °C under FR4 board mounting conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−45 V: Maximum safe collector-emitter voltage before breakdown in open-base configuration
I_C (DC)	−100 mA: Continuous collector current limit defining linear/saturation operating envelope
P_tot	250 mW at T_amb ≤ 25 °C: Power dissipation ceiling requiring thermal derating above ambient
h_FE	30–310: DC current gain range across bias conditions, enabling stable biasing in amplifier stages
f_T	100 MHz: Transition frequency confirming usable bandwidth up to low-VHF range
Noise Figure	2–6 dB at 1 kHz: Quantified low-noise performance critical for preamplifier front-ends
R_th(j-a)	500 K/W: Junction-to-ambient thermal resistance on FR4 PCB, guiding heatsinking requirements

Pinout & Package

BCX71H,215 is housed in a plastic surface-mount SOT23 (TO-236AB) package measuring 2.9 × 1.3 × 1.0 mm, with gull-wing leads and standard JEDEC outline.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Current-controlled input terminal; requires external bias network for active-mode operation
2	Emitter	Common reference node in common-base/common-collector configurations; connected to most positive rail in PNP use
3	Collector	Output current terminal; sinks current when base is forward-biased relative to emitter

Key Features

Feature	Design Value
Low-noise operation	Noise figure 2–6 dB at 1 kHz enables high-SNR signal conditioning in sensor interfaces
Wide h_FE range	30–310 gain spread accommodates production variance and ensures stable bias across batches
SOT23 footprint compatibility	Standard 3-pin SOT23 layout allows drop-in replacement and automated assembly on dense PCBs
Complementary NPN pairing	Direct match with BCX70 series simplifies push-pull and differential pair implementation

Applications

Audio Pre-amplifier Stage

Low-Voltage Switching Load

Use Scenario: Amplifying microvolt-level signals from electret condenser microphones before ADC sampling.

IC Role / Device Role / Timing Role: PNP BJT configured as common-emitter amplifier with emitter degeneration for linearity.

Use Value: 2–6 dB noise figure preserves signal integrity; h_FE ≥ 180 at −2 mA ensures sufficient gain without added op-amps.

Use Scenario: Driving LED indicators or small relays from 3.3 V/5 V logic outputs in industrial control panels.

IC Role / Device Role / Timing Role: Saturated switch controlling current path between V_CC and load.

Use Value: V_CE(sat) ≤ −250 mV at I_C = −10 mA minimizes power loss; −45 V rating provides margin against transients.

Hybrid Analog Filter Node

Current Mirror Reference

Use Scenario: Implementing active RC filter sections in mixed-signal instrumentation where IC count must be minimized.

IC Role / Device Role / Timing Role: Transconductance element in single-transistor active filter topology.

Use Value: f_T = 100 MHz supports filter cutoffs up to ~1 MHz; low C_c/C_e reduces parasitic loading.

Use Scenario: Building matched current sources in precision analog front-ends for sensor excitation or DAC output buffering.

IC Role / Device Role / Timing Role: One leg of a two-transistor current mirror with emitter resistors for improved matching.

Use Value: Tight h_FE consistency across BCX71H lots (30–310) enables predictable mirroring ratio; low I_CBO (≤ −20 nA) limits error current.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX71J,215	Higher h_FE (40–460) at same V_CEO/I_C; otherwise identical package and pinout	Better suited for high-gain amplifier stages where lower base drive current is needed	Select when bias network must minimize base current draw or improve loop gain stability
MMBT3906LT1G	Same SOT23 package but higher V_CEO (−40 V), lower noise figure (10 dB typical), and different h_FE binning (100–300)	Preferred in automotive-grade designs requiring AEC-Q200 compliance and wider temperature margin	Choose for extended-temperature or qualification-critical applications where Nexperia's BCX71H lacks formal AEC certification

Compared with BCX71J,215, BCX71H offers lower minimum h_FE for tighter gain control in switching; versus MMBT3906LT1G, it delivers superior noise performance but lacks automotive qualification-making BCX71H optimal for cost-sensitive, low-noise industrial analog nodes.

Availability

BCX71H,215 is available at Aetrix Electronics and suitable for audio pre-amplifiers, low-voltage switching loads, hybrid analog filter nodes, and current mirror references requiring stable component supply and consistent parametric performance across production batches.

Supply support for BCX71H,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's Standard Products division in 2017, with manufacturing and R&D focused on automotive, industrial, computing, and consumer markets.

The BCX71 series belongs to Nexperia's general-purpose bipolar transistor product line, designed specifically for reliable, low-cost amplification and switching in space-constrained, low-power analog and mixed-signal systems.

FAQ

What is the maximum allowable collector-emitter voltage for BCX71H,215?

The absolute maximum V_CEO is −45 V under open-base conditions, as defined in the IEC 60134 limiting values table. Operation beyond this voltage risks permanent junction breakdown. Derating is required above 25 °C ambient per the 500 K/W thermal resistance specification.

Does BCX71H,215 have AEC-Q200 qualification for automotive use?

No, BCX71H,215 is not AEC-Q200 qualified. It is specified for industrial and consumer applications. For automotive-grade equivalents, consider MMBT3906LT1G or ZTX653, both certified to AEC-Q200 Rev D and validated for −55 °C to +150 °C operation.

How does the noise performance of BCX71H,215 compare to other SOT23 PNP transistors?

BCX71H,215 achieves 2–6 dB noise figure at 1 kHz with 2 kΩ source resistance-among the lowest in its class. This outperforms standard PNP devices like PN2907A (10–15 dB) and matches premium low-noise variants such as MPSA56, making it suitable for microphone preamps and sensor signal chains.

Can BCX71H,215 be used as a direct replacement for BCX71K,215 in existing designs?

No-BCX71H has significantly lower h_FE (30–310) than BCX71K (380–630). Substituting without circuit re-biasing may cause insufficient gain or improper saturation in amplifier or switch applications. Verify base resistor values and operating point margins before interchange.

BCX71H,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:: PNP

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:: 180 @ 2mA, 5V

Power - Max:: 250 mW

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

BCX71H,215 FAQ

1.How can I place an order for BCX71H,215 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX71H,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 BCX71H,215 reliable?

The price and inventory of BCX71H,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX71H,215 is usually 5 days.

3.What payment methods are accepted for BCX71H,215?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX71H,215 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX71H,215?

BCX71H,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX71H,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 BCX71H,215?

For technical support, including BCX71H,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX71H,215 requirements.

6.How does Aetrix verify that BCX71H,215 is sourced from the original manufacturer or authorized distributors?

All BCX71H,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 BCX71H,215 meets industry standards.

7.What is the process for return or replacement of BCX71H,215?

All BCX71H,215 units undergo pre-shipment inspection (PSI). If there is an issue with BCX71H,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 BCX71H,215 part is unused and in its original packaging.

Return procedure for BCX71H,215:

1.Submit a request within 90 days.

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

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