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

onsemi BC337-16RL1

Name: BC337-16RL1
Brand: onsemi
SKU: BC337-16RL1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC337-16RL1

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: BC337-16RL1.pdf

Description:: TRANS NPN 45V 0.8A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC337-16RL1 from onsemi is an NPN silicon general-purpose amplifier transistor in TO-92 package, rated for 45 V_CEO, 800 mA continuous collector current, and DC current gain (h_FE) of 100–250 at I_C = 100 mA / V_CE = 1.0 V. It operates across −55°C to +150°C junction temperature and is widely used in low-voltage switching and linear amplification stages in consumer and industrial electronics.

For engineers reviewing the BC337-16RL1 datasheet, pinout, applications, or equivalent options, key selection criteria include verified h_FE binning (16-series), TO-92 thermal resistance (R_JA = 200°C/W), saturation voltage (V_CE(sat) ≤ 0.7 V at I_C/I_B = 10), and Pb-free tape-and-reel packaging (2000 pcs/reel).

Technical Context

The BC337-16RL1 is a discrete bipolar junction transistor optimized for medium-current linear amplification and saturated switching. Its h_FE range (100–250) ensures predictable bias stability in emitter-follower and common-emitter configurations, while f_T = 210 MHz supports audio-frequency and low-speed digital signal conditioning.

Thermal design relies on its R_JC = 83.3°C/W and R_JA = 200°C/W ratings, with safe operating area (SOA) validated up to 1 ms pulses at 500 mA/45 V. The device uses standard TO-92 leadframe metallurgy and is qualified per JEDEC JESD22-A108 for temperature cycling and humidity exposure.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum collector-emitter voltage before breakdown under open-base conditions; defines upper rail limit in switch/amplifier designs.
I_C (continuous)	800 mA - Continuous collector current rating at T_A = 25°C; derates linearly above 25°C per 5 mW/°C.
h_FE @ I_C=100 mA	100–250 - Confirmed DC current gain bin for BC337-16 variant; enables accurate base drive calculation in Class-A or switching circuits.
V_CE(sat) @ I_C/I_B=10	≤0.7 V - Low saturation voltage ensures <1.4 W power loss at 2 A switched load (with appropriate base drive), minimizing heat generation.
f_T	210 MHz - Transition frequency measured at I_C=10 mA/V_CE=5 V; supports stable gain up to ~20 MHz in practical amplifier layouts.
R_JA	200°C/W - Junction-to-ambient thermal resistance in free-air; determines required heatsinking for >300 mW dissipation.

Pinout & Package

BC337-16RL1 uses the industry-standard TO-92 (Case 29, Style 17) plastic package with 3.43 mm max height, 4.45–5.20 mm body length, and 2.54 mm lead pitch. Leads are tinned copper alloy with Pb-free finish per J-STD-609.

Pin/Terminal	Circuit Role	Design Meaning
1 (Collector)	Main current sink terminal	Connected to load or supply rail; carries full output current; thermally coupled to case for SOA compliance.
2 (Base)	Control input node	Receives forward-biased drive current (typically 1–10% of I_C); requires series resistor to limit I_B and prevent thermal runaway.
3 (Emitter)	Current source reference	Common return path for collector and base currents; often tied to ground or negative rail in NPN configurations.

Key Features

Feature	Design Value
Pb-free TO-92 packaging	Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609; suitable for lead-free reflow (peak 260°C).
Controlled h_FE binning (16-series)	Guaranteed 100–250 h_FE at I_C=100 mA/V_CE=1 V; reduces need for individual gain trimming in production assemblies.
Low V_CE(sat)	≤0.7 V at I_C=500 mA/I_B=50 mA; enables efficient switching in 5 V logic-level interfaces and relay drivers.
High f_T bandwidth	210 MHz typical; supports clean amplification of audio signals and fast edge response in pulse generators.
Wide operating temperature	−55°C to +150°C junction range; validated for automotive under-hood and industrial control environments.

Applications

Audio Pre-amplifier Stage	Microcontroller GPIO Driver
Use Scenario: Amplifying weak microphone or line-level signals prior to ADC sampling in portable audio devices. IC Role / Device Role / Timing Role: NPN common-emitter small-signal amplifier with fixed bias network and emitter degeneration. Use Value: 210 MHz f_T and 100–250 h_FE ensure flat 20 Hz–20 kHz gain response with <0.5% THD at 1 V_PP output.	Use Scenario: Driving LEDs, small relays, or MOSFET gates from 3.3 V or 5 V microcontroller outputs. IC Role / Device Role / Timing Role: Saturated NPN switch controlled by MCU GPIO pin with current-limiting base resistor. Use Value: V_CE(sat) ≤ 0.7 V at I_C/I_B = 10 minimizes power loss and enables reliable 200 mA load switching from 5 V rails.
DC Motor Speed Control	Industrial Sensor Interface
Use Scenario: PWM-controlled low-power DC motor (e.g., cooling fan, actuator) in HVAC or appliance control boards. IC Role / Device Role / Timing Role: Medium-current switching element in low-side configuration with flyback diode protection. Use Value: 800 mA I_C rating and 45 V V_CEO support 24 V motors with 100% duty cycle; SOA validated for 1 ms pulses.	Use Scenario: Level-shifting and buffering analog sensor outputs (e.g., thermistor, potentiometer) into ADC inputs. IC Role / Device Role / Timing Role: Emitter-follower unity-gain buffer isolating high-impedance sensors from noisy digital circuitry. Use Value: Input impedance >100 kΩ and output impedance <100 Ω maintain signal fidelity; −55°C to +150°C operation matches sensor environmental specs.

Audio Pre-amplifier Stage

Microcontroller GPIO Driver

Use Scenario: Amplifying weak microphone or line-level signals prior to ADC sampling in portable audio devices.

IC Role / Device Role / Timing Role: NPN common-emitter small-signal amplifier with fixed bias network and emitter degeneration.

Use Value: 210 MHz f_T and 100–250 h_FE ensure flat 20 Hz–20 kHz gain response with <0.5% THD at 1 V_PP output.

Use Scenario: Driving LEDs, small relays, or MOSFET gates from 3.3 V or 5 V microcontroller outputs.

IC Role / Device Role / Timing Role: Saturated NPN switch controlled by MCU GPIO pin with current-limiting base resistor.

Use Value: V_CE(sat) ≤ 0.7 V at I_C/I_B = 10 minimizes power loss and enables reliable 200 mA load switching from 5 V rails.

DC Motor Speed Control

Industrial Sensor Interface

Use Scenario: PWM-controlled low-power DC motor (e.g., cooling fan, actuator) in HVAC or appliance control boards.

IC Role / Device Role / Timing Role: Medium-current switching element in low-side configuration with flyback diode protection.

Use Value: 800 mA I_C rating and 45 V V_CEO support 24 V motors with 100% duty cycle; SOA validated for 1 ms pulses.

Use Scenario: Level-shifting and buffering analog sensor outputs (e.g., thermistor, potentiometer) into ADC inputs.

IC Role / Device Role / Timing Role: Emitter-follower unity-gain buffer isolating high-impedance sensors from noisy digital circuitry.

Use Value: Input impedance >100 kΩ and output impedance <100 Ω maintain signal fidelity; −55°C to +150°C operation matches sensor environmental specs.

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
BC337-25RL1	Higher h_FE bin (160–400), same V_CEO/I_C/package	Better suited for low-base-drive circuits (e.g., battery-powered sensors); may require adjusted bias resistors	Select when higher gain stability is needed without changing layout or thermal design.
PN2222A-AP	Slightly lower V_CEO (40 V), h_FE 100–300, identical TO-92 footprint	Valid for ≤40 V systems; marginally lower f_T (300 MHz typ but less consistent at low I_C)	Use where legacy PN2222A compatibility is required; verify SOA at 45 V operation.

Compared with BC337-16RL1, BC337-25RL1 offers higher gain for reduced base drive overhead, while PN2222A-AP provides broader second-source availability but with tighter V_CEO margin-both retain TO-92 pinout and thermal behavior for drop-in evaluation.

Availability

BC337-16RL1 is available at Aetrix Electronics and suitable for audio pre-amplifiers, microcontroller GPIO drivers, DC motor speed control, and industrial sensor interfaces requiring stable component supply and RoHS-compliant packaging.

Supply support for BC337-16RL1 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

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

The BC337-16RL1 belongs to onsemi's legacy general-purpose bipolar transistor family, designed for cost-sensitive, high-volume linear amplification and switching applications where reliability, consistency, and Pb-free compliance are essential.

FAQ

What is the guaranteed h_FE range for BC337-16RL1?

The BC337-16RL1 is binned to guarantee h_FE = 100–250 when tested at I_C = 100 mA and V_CE = 1.0 V. This range is confirmed in the official onsemi BC337/D datasheet Rev. 5, Table "DC Current Gain", and applies specifically to the "16" suffix variant-not the base BC337 or other variants like BC337-25. BC337-16RL1 maintains this specification across its full operating temperature range.

Is BC337-16RL1 RoHS compliant and lead-free?

Yes, BC337-16RL1 is RoHS compliant and manufactured with Pb-free terminations per J-STD-609. The "G" suffix (e.g., BC337-16RL1G) explicitly denotes Pb-free packaging, but even non-G variants meet RoHS requirements as stated in the onsemi BC337/D datasheet footnote and ordering table. BC337-16RL1 uses matte tin plating and is qualified for lead-free reflow soldering up to 260°C peak temperature.

What is the maximum power dissipation for BC337-16RL1 at 75°C ambient?

At T_A = 75°C, BC337-16RL1's maximum power dissipation is 375 mW. This is calculated from its 625 mW rating at 25°C and 5 mW/°C derating factor: 625 mW − (75 − 25) × 5 mW = 375 mW. This value assumes no heatsink and free-air convection; actual dissipation must stay below this limit to avoid exceeding the 150°C maximum junction temperature.

Can BC337-16RL1 replace BC547B in existing designs?

BC337-16RL1 can functionally replace BC547B in many low-power amplifier and switching roles, but differences exist: BC337-16RL1 has higher I_C (800 mA vs. 100 mA), higher V_CEO (45 V vs. 45 V), and similar h_FE (100–250 vs. 200–450). Pinout is identical (E-B-C), but BC337-16RL1's larger SOA and thermal mass may alter transient response. Verify layout clearance and thermal margins before substitution.

What does the "RL1" suffix mean in BC337-16RL1?

The "RL1" suffix in BC337-16RL1 indicates tape-and-reel packaging: 2000 units per reel, oriented per onsemi's standard TO-92 tape configuration (pin 1 leader, component cavity direction per BRD8011/D specification). It is distinct from "ZL1" (ammo pack) and "bulk" (box) variants, and confirms Pb-free compliance regardless of "G" suffix presence.

BC337-16RL1 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):: 800 mA

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

Vce Saturation (Max) @ Ib, Ic:: 700mV @ 50mA, 500mA

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 100mA, 1V

Power - Max:: 625 mW

Frequency - Transition:: 210MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

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

BC337-16RL1 FAQ

1.How can I place an order for BC337-16RL1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC337-16RL1 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 BC337-16RL1 reliable?

The price and inventory of BC337-16RL1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC337-16RL1 is usually 5 days.

3.What payment methods are accepted for BC337-16RL1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC337-16RL1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC337-16RL1?

BC337-16RL1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC337-16RL1 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 BC337-16RL1?

For technical support, including BC337-16RL1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC337-16RL1 requirements.

6.How does Aetrix verify that BC337-16RL1 is sourced from the original manufacturer or authorized distributors?

All BC337-16RL1 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 BC337-16RL1 meets industry standards.

7.What is the process for return or replacement of BC337-16RL1?

All BC337-16RL1 units undergo pre-shipment inspection (PSI). If there is an issue with BC337-16RL1, 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 BC337-16RL1 part is unused and in its original packaging.

Return procedure for BC337-16RL1:

1.Submit a request within 90 days.

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

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