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

onsemi BC182BRL1

Name: BC182BRL1
Brand: onsemi
SKU: BC182BRL1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC182BRL1

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 Long Body, Formed Leads

Datasheet:: BC182BRL1.pdf

Description:: TRANS NPN 50V 0.1A TO92

Quantity:: RFQ Add To RFQ list

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Inventory:3,828

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Product details

Overview

BC182BRL1 from ON Semiconductor is an NPN silicon small-signal amplifier transistor in TO-92 package, rated for V_CEO = 50 V, I_C = 100 mA, P_D = 350 mW at T_A = 25°C, with h_FE = 120–500 (at I_C = 2.0 mA, V_CE = 5.0 V), and f_T = 100–200 MHz - used in low-noise audio preamplifier stages and signal conditioning circuits.

For engineers reviewing the BC182BRL1 datasheet, pinout, applications, or equivalent options, key selection criteria include DC current gain range, saturation voltage at defined drive conditions, thermal resistance (R_JA = 357°C/W), junction temperature limits (−55°C to +150°C), and Pb-free tape-and-reel packaging compliance for automated assembly.

Technical Context

The BC182BRL1 operates as a general-purpose NPN bipolar junction transistor optimized for linear amplification rather than switching. Its h_FE binning (BC182B grade) guarantees minimum h_FE = 120 at I_C = 2.0 mA and V_CE = 5.0 V, with typical f_T = 150 MHz ensuring usable bandwidth in audio and IF amplifier designs.

Thermal design relies on its R_JA = 357°C/W (TO-92, free-air) and R_JC = 125°C/W, while V_BE(sat) ≤ 1.2 V and V_CE(sat) ≤ 0.25 V at I_C/I_B = 10 confirm low-loss operation in Class-A bias configurations with moderate collector current.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum safe collector-emitter voltage before breakdown; defines headroom for audio stage supply rails.
I_C (cont.)	100 mA - Continuous collector current limit; sets upper bound for quiescent bias and output swing capability.
h_FE (min)	120 @ I_C = 2 mA - Guaranteed DC current gain ensures stable bias point in emitter-follower or common-emitter amplifiers.
f_T	100–200 MHz - Unity-gain frequency confirms suitability for audio and low-MHz signal amplification without instability.
V_CE(sat)	≤ 0.25 V @ I_C = 100 mA, I_B = 5 mA - Low saturation voltage minimizes power loss and heating in linear operation.
NF	2.0–10 dB @ I_C = 0.2 mA - Noise figure range supports low-noise preamp use where signal integrity is critical.
R_JA	357°C/W - Junction-to-ambient thermal resistance determines required PCB copper area or heatsinking for safe continuous operation.

Pinout & Package

BC182BRL1 uses the standard TO-92 (Case 29, Style 17) through-hole plastic package with 3 leads, designed for manual or wave soldering and compatible with legacy PCB footprints.

Pin/Terminal	Circuit Role	Design Meaning
1	Collector	Main current output terminal; connects to load or next stage input; carries full collector current and dissipates most heat.
2	Base	Control electrode; requires precise bias current to set operating point; sensitive to ESD and layout parasitics.
3	Emitter	Current return path; often grounded or connected to emitter resistor for stabilization; reference for V_BE and bias network.

Key Features

Feature	Design Value
Pb-Free Packaging	Complies with RoHS Directive 2011/65/EU; BC182BRL1G variant available for lead-free assembly processes.
High h_FE Consistency	BC182B grade ensures h_FE ≥ 120 and ≤ 500 at 2 mA, reducing need for individual gain trimming in production.
Low Saturation Voltage	V_CE(sat) ≤ 0.25 V enables efficient Class-A amplifiers with minimal voltage drop across the transistor.
Controlled Noise Performance	NF ≤ 10 dB at 1 kHz allows use in microphone preamps and sensor interface circuits requiring high SNR.
Tape-and-Reel Supply	BC182BRL1 shipped in 2000-unit reels - optimized for SMT placement equipment despite through-hole package.

Applications

Audio Preamp Stage	Signal Level Shifter
Use Scenario: Amplifying weak signals from electret microphones or piezoelectric sensors before ADC sampling. IC Role / Device Role / Timing Role: NPN small-signal amplifier configured in common-emitter topology with emitter degeneration. Use Value: h_FE ≥ 120 and NF ≤ 10 dB ensure sufficient gain and low added noise for 20 Hz–20 kHz audio band fidelity.	Use Scenario: Translating logic-level signals between 3.3 V and 5 V domains in mixed-voltage embedded systems. IC Role / Device Role / Timing Role: Discrete level translator using saturated switch operation with base current limiting. Use Value: V_CE(sat) ≤ 0.25 V and fast f_T > 100 MHz support clean edge transitions and minimal propagation delay.
DC-Coupled Sensor Interface	Low-Power Oscillator Core
Use Scenario: Amplifying millivolt-level outputs from thermistors or strain gauges in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Linear amplifier in differential pair or single-ended configuration with precision biasing. Use Value: Stable h_FE over −55°C to +150°C and low I_CBO ≤ 15 nA minimize drift and leakage-induced offset errors.	Use Scenario: Active device in Colpitts or Hartley oscillator circuits generating 1–10 MHz clock references for microcontrollers. IC Role / Device Role / Timing Role: Gain element sustaining oscillation via tuned LC tank feedback. Use Value: f_T ≥ 100 MHz and C_ob = 5.0 pF provide adequate gain margin and predictable phase shift at target frequencies.

Audio Preamp Stage

Signal Level Shifter

Use Scenario: Amplifying weak signals from electret microphones or piezoelectric sensors before ADC sampling.

IC Role / Device Role / Timing Role: NPN small-signal amplifier configured in common-emitter topology with emitter degeneration.

Use Value: h_FE ≥ 120 and NF ≤ 10 dB ensure sufficient gain and low added noise for 20 Hz–20 kHz audio band fidelity.

Use Scenario: Translating logic-level signals between 3.3 V and 5 V domains in mixed-voltage embedded systems.

IC Role / Device Role / Timing Role: Discrete level translator using saturated switch operation with base current limiting.

Use Value: V_CE(sat) ≤ 0.25 V and fast f_T > 100 MHz support clean edge transitions and minimal propagation delay.

DC-Coupled Sensor Interface

Low-Power Oscillator Core

Use Scenario: Amplifying millivolt-level outputs from thermistors or strain gauges in battery-powered IoT nodes.

IC Role / Device Role / Timing Role: Linear amplifier in differential pair or single-ended configuration with precision biasing.

Use Value: Stable h_FE over −55°C to +150°C and low I_CBO ≤ 15 nA minimize drift and leakage-induced offset errors.

Use Scenario: Active device in Colpitts or Hartley oscillator circuits generating 1–10 MHz clock references for microcontrollers.

IC Role / Device Role / Timing Role: Gain element sustaining oscillation via tuned LC tank feedback.

Use Value: f_T ≥ 100 MHz and C_ob = 5.0 pF provide adequate gain margin and predictable phase shift at target frequencies.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC547B	Higher h_FE range (200–450), lower V_CEO = 45 V, same TO-92 package.	Suitable for higher-gain, lower-voltage designs; not recommended for 50 V rail applications.	Select BC547B when gain consistency at I_C = 1–10 mA is prioritized over maximum voltage rating.
2N3904	Lower max I_C = 200 mA, higher V_CEO = 40 V, f_T = 300 MHz, same pinout.	Better high-frequency response but reduced DC gain stability at low currents vs. BC182B.	Choose 2N3904 for RF amplifier stages up to 100 MHz where bandwidth outweighs h_FE tolerance.

Compared with BC182BRL1, BC547B offers tighter h_FE spread at mid-currents but sacrifices voltage margin, while 2N3904 delivers superior f_T and higher I_C rating but with less guaranteed low-current gain - making BC182BRL1 optimal for cost-sensitive, wide-temperature audio and sensor front-ends.

Availability

BC182BRL1 is available at Aetrix Electronics and suitable for audio preamplifiers, sensor signal conditioning, and discrete logic-level translation requiring stable component supply, consistent h_FE binning, and RoHS-compliant tape-and-reel delivery.

Supply support for BC182BRL1 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

ON Semiconductor (now onsemi) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and consumer markets.

The BC182 series belongs to onsemi's legacy general-purpose bipolar transistor product line, engineered for reliability and performance in linear amplification, switching, and interface functions across commercial and industrial temperature ranges.

FAQ

What is the maximum collector-emitter voltage rating for BC182BRL1?

The BC182BRL1 has a maximum collector-emitter voltage (V_CEO) rating of 50 Vdc. This value is specified under test condition I_C = 2.0 mA and I_B = 0, and represents the absolute maximum voltage that can be applied between collector and emitter without risking avalanche breakdown. Exceeding this rating may cause permanent device damage, and derating is recommended for operation above 25°C ambient.

Is BC182BRL1 suitable for low-noise audio applications?

Yes, BC182BRL1 is suitable for low-noise audio applications due to its specified noise figure (NF) of 2.0–10 dB at I_C = 0.2 mA, V_CE = 5.0 V, R_S = 2.0 kΩ, and f = 1.0 kHz. Its h_FE ≥ 120 and stable small-signal gain (h_fe = 240 typical) support high-fidelity preamplifier designs. For best results, use emitter degeneration and proper grounding to minimize external noise coupling into the BC182BRL1 base terminal.

What does the 'RL1' suffix mean in BC182BRL1?

The 'RL1' suffix in BC182BRL1 indicates tape-and-reel packaging: 'RL' denotes reel format, and '1' specifies the standard orientation and carrier tape configuration per onsemi's packaging standard. BC182BRL1 contains 2000 units per reel and is intended for automated pick-and-place assembly. It shares identical electrical and thermal specifications with the bulk-packaged BC182B but differs only in packaging logistics and moisture sensitivity level (MSL) handling requirements.

How does BC182BRL1 differ from BC182A and BC182 in terms of DC current gain?

BC182BRL1 belongs to the BC182B gain bin, guaranteeing h_FE = 120–500 at I_C = 2.0 mA and V_CE = 5.0 V. In contrast, BC182A specifies h_FE = 120–220, and standard BC182 specifies h_FE = 40–120 under the same conditions. Thus, BC182BRL1 provides the highest minimum and maximum h_FE among the three, improving bias stability in production-amplifier designs where gain variation must be tightly controlled.

Can BC182BRL1 be used in switching applications?

BC182BRL1 can be used in low-speed switching applications, but it is optimized for linear amplification. Its V_CE(sat) ≤ 0.25 V at I_C/I_B = 10 supports efficient saturation, and t_on/t_off data (not explicitly published) is inferred from f_T ≥ 100 MHz to be suitable for <100 kHz switching. For high-efficiency or high-frequency switching, dedicated switching transistors like MMBT2222A are preferred due to lower R_BE and faster recovery characteristics.

BC182BRL1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body, Formed Leads

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Vce Saturation (Max) @ Ib, Ic:: 600mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 15nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 180 @ 2mA, 5V

Power - Max:: 350 mW

Frequency - Transition:: 200MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92 (TO-226)

BC182BRL1 FAQ

1.How can I place an order for BC182BRL1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC182BRL1 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 BC182BRL1 reliable?

The price and inventory of BC182BRL1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC182BRL1 is usually 5 days.

3.What payment methods are accepted for BC182BRL1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC182BRL1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC182BRL1?

BC182BRL1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC182BRL1 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 BC182BRL1?

For technical support, including BC182BRL1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC182BRL1 requirements.

6.How does Aetrix verify that BC182BRL1 is sourced from the original manufacturer or authorized distributors?

All BC182BRL1 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 BC182BRL1 meets industry standards.

7.What is the process for return or replacement of BC182BRL1?

All BC182BRL1 units undergo pre-shipment inspection (PSI). If there is an issue with BC182BRL1, 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 BC182BRL1 part is unused and in its original packaging.

Return procedure for BC182BRL1:

1.Submit a request within 90 days.

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

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