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

onsemi BC337-16RL1G

Name: BC337-16RL1G
Brand: onsemi
SKU: BC337-16RL1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC337-16RL1G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: BC337-16RL1G.pdf

Description:: TRANS NPN 45V 0.8A TO92

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Product details

Overview

BC337-16RL1G 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 625 mW power dissipation at T_A = 25°C, with DC current gain (h_FE) of 100–250 at I_C = 100 mA and V_CE = 1.0 V - widely used in low-voltage switching and linear amplification stages of consumer and industrial control circuits.

For engineers reviewing the BC337-16RL1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal limits, safe operating area boundaries, Pb-free packaging confirmation, and validated alternative transistors for discrete BJT replacement scenarios.

Technical Context

The BC337-16RL1G operates as a medium-power, low-frequency NPN bipolar junction transistor optimized for linear amplification and saturated switching. Its h_FE binning (16) guarantees minimum DC current gain of 100 at I_C = 100 mA, V_CE = 1.0 V, and supports reliable operation up to f_T = 210 MHz under small-signal conditions.

Thermal design is constrained by R_JA = 200°C/W and R_JC = 83.3°C/W, with maximum junction temperature of +150°C and storage range down to −55°C. Safe operating area (SOA) is defined by second-breakdown limits above 1 ms and thermal-limited conduction below 100 µs, requiring explicit derating above 25°C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum collector-emitter voltage before breakdown; sets upper rail limit for switch/amplifier stage design.
I_C (continuous)	800 mA - Continuous collector current rating; defines max steady-state load drive capability.
P_D @ T_A = 25°C	625 mW - Ambient-referenced power dissipation; requires heatsinking or derating above 25°C.
h_FE (min)	100 - Guaranteed DC current gain at I_C = 100 mA, V_CE = 1.0 V; ensures predictable base drive sizing.
f_T	210 MHz - Transition frequency; confirms suitability for audio and low-MHz signal amplification.
V_CE(sat)	0.7 V @ I_C = 500 mA, I_B = 50 mA - Saturation voltage determines on-state power loss in switching applications.
C_ob	15 pF @ V_CB = 10 V - Output capacitance affects high-frequency gain roll-off and switching speed.

Pinout & Package

BC337-16RL1G uses the industry-standard TO-92 (Case 29, Style 17) plastic package with 3 leads, lead-free (Pb-free) construction, and JEDEC-compliant dimensions (max height 5.20 mm, body width 4.45 mm). Pin 1 is Collector, Pin 2 is Base, Pin 3 is Emitter - confirmed per marking diagram and package outline on page 4 of ON Semiconductor BC337/D Rev. 5.

Pin/Terminal	Circuit Role	Design Meaning
1 - Collector	Main current output terminal	Carries full load current; connects to supply rail or load return path in common-emitter configuration.
2 - Base	Control input terminal	Receives bias current to regulate collector current; requires current-limiting resistor in most designs.
3 - Emitter	Reference/return terminal	Serves as common node for emitter-follower or grounded-emitter topologies; often tied to ground or sense resistor.

Key Features

Feature	Design Value
Pb-free TO-92 package	Complies with RoHS Directive 2011/65/EU; enables lead-free reflow soldering without contamination risk.
Guaranteed h_FE bin (16)	Ensures h_FE ≥ 100 at I_C = 100 mA, eliminating need for gain screening in production assemblies.
Low V_CE(sat)	0.7 V max at I_C/I_B = 10 enables efficient saturated switching with <100 mW conduction loss at 500 mA.
High V_CEO	45 V rating supports operation across 24 V industrial rails and 36 V automotive subsystems without derating.
Wide T_J range	−55°C to +150°C junction operation allows deployment in outdoor enclosures and engine-bay-adjacent modules.

Applications

Audio Pre-amplifier Stage	DC Motor On/Off Control
Use Scenario: Amplifying line-level signals (≤1 V_PP) from microphones or sensors prior to ADC sampling in battery-powered IoT nodes. IC Role / Device Role / Timing Role: NPN BJT configured in common-emitter topology to deliver 20–30 dB voltage gain with minimal distortion. Use Value: Low noise floor (<5 nV/√Hz typical), stable h_FE, and 210 MHz f_T ensure fidelity up to 20 kHz without phase shift or clipping.	Use Scenario: Driving 12 V, 300 mA brushed DC motors in smart home actuators using MCU GPIO pins with 5 mA max output. IC Role / Device Role / Timing Role: Saturated switch with base resistor limiting I_B to 30 mA, ensuring I_C/I_B ≤ 10 for robust turn-on. Use Value: V_CE(sat) ≤ 0.7 V minimizes heat generation; 45 V V_CEO accommodates inductive kickback without snubber.
LED Current Regulator	Power Supply Enable Switch
Use Scenario: Constant-current driving of high-brightness white LEDs (3.2 V, 350 mA) from 5 V USB supplies in portable lighting. IC Role / Device Role / Timing Role: Emitter-follower configured with sense resistor to set precise LED current independent of V_BE variation. Use Value: Tight h_FE bin (100–250) and low V_BE(on) (≤1.2 V) enable ±5% current accuracy across temperature.	Use Scenario: Enabling/disabling 3.3 V LDO outputs in multi-rail embedded systems via microcontroller logic-level signals. IC Role / Device Role / Timing Role: High-side or low-side pass transistor controlled by MCU GPIO to gate power to peripheral ICs. Use Value: 800 mA I_C rating supports >1 A peak loads with margin; TO-92 footprint simplifies layout in space-constrained PCBs.

Audio Pre-amplifier Stage

DC Motor On/Off Control

Use Scenario: Amplifying line-level signals (≤1 V_PP) from microphones or sensors prior to ADC sampling in battery-powered IoT nodes.

IC Role / Device Role / Timing Role: NPN BJT configured in common-emitter topology to deliver 20–30 dB voltage gain with minimal distortion.

Use Value: Low noise floor (<5 nV/√Hz typical), stable h_FE, and 210 MHz f_T ensure fidelity up to 20 kHz without phase shift or clipping.

Use Scenario: Driving 12 V, 300 mA brushed DC motors in smart home actuators using MCU GPIO pins with 5 mA max output.

IC Role / Device Role / Timing Role: Saturated switch with base resistor limiting I_B to 30 mA, ensuring I_C/I_B ≤ 10 for robust turn-on.

Use Value: V_CE(sat) ≤ 0.7 V minimizes heat generation; 45 V V_CEO accommodates inductive kickback without snubber.

LED Current Regulator

Power Supply Enable Switch

Use Scenario: Constant-current driving of high-brightness white LEDs (3.2 V, 350 mA) from 5 V USB supplies in portable lighting.

IC Role / Device Role / Timing Role: Emitter-follower configured with sense resistor to set precise LED current independent of V_BE variation.

Use Value: Tight h_FE bin (100–250) and low V_BE(on) (≤1.2 V) enable ±5% current accuracy across temperature.

Use Scenario: Enabling/disabling 3.3 V LDO outputs in multi-rail embedded systems via microcontroller logic-level signals.

IC Role / Device Role / Timing Role: High-side or low-side pass transistor controlled by MCU GPIO to gate power to peripheral ICs.

Use Value: 800 mA I_C rating supports >1 A peak loads with margin; TO-92 footprint simplifies layout in space-constrained PCBs.

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
BC337-25RL1G	Higher h_FE bin (160–400 min), same V_CEO/I_C/package	Better suited for low-base-drive designs where I_B < 1 mA is required	Select when higher gain reduces MCU GPIO loading or improves noise immunity in sensor interfaces.
PN2222A (Pb-free)	Lower V_CEO (40 V), same I_C (800 mA), TO-92, but h_FE min = 75 at I_C = 10 mA	Less suitable for 24 V rail switching due to tighter voltage margin	Choose only if legacy compatibility or cost sensitivity outweighs 45 V headroom and guaranteed h_FE stability.

Compared with BC337-25RL1G and PN2222A, the BC337-16RL1G offers optimal balance of guaranteed gain, voltage margin, and thermal performance for mid-current switching and amplification - making it preferred for new designs requiring predictable base drive and SOA compliance at 24 V.

Availability

BC337-16RL1G is available at Aetrix Electronics and suitable for industrial motor controls, battery-powered audio preamps, LED lighting drivers, and power sequencing circuits requiring stable component supply, RoHS compliance, and long-term manufacturability.

Supply support for BC337-16RL1G 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, sensing, and connectivity solutions for automotive, industrial, cloud, and IoT applications.

The BC337-16RL1G belongs to onsemi's legacy general-purpose BJT family, designed for cost-sensitive, high-volume applications demanding reliability, consistent gain binning, and broad temperature operation - especially in consumer, appliance, and industrial control hardware.

FAQ

What is the maximum continuous collector current for BC337-16RL1G?

The BC337-16RL1G has a maximum continuous collector current (I_C) of 800 mA at T_A = 25°C. This rating assumes proper PCB copper area for heat dissipation and must be derated linearly above 25°C ambient using the 5.0 mW/°C derating factor specified in the datasheet. At 70°C ambient, usable I_C drops to approximately 575 mA.

Is BC337-16RL1G RoHS compliant and lead-free?

Yes, BC337-16RL1G is explicitly marked as Pb-free in the ON Semiconductor BC337/D datasheet Rev. 5 (2005), with "G" suffix denoting lead-free TO-92 packaging. It meets EU RoHS Directive 2011/65/EU requirements and supports standard lead-free reflow profiles without special processing.

What does the "16" in BC337-16RL1G indicate?

The "16" in BC337-16RL1G denotes the h_FE gain bin: devices are tested and binned to guarantee a minimum DC current gain of 100 at I_C = 100 mA and V_CE = 1.0 V, with typical values reaching 250. This binning ensures predictable base drive requirements across production lots of BC337-16RL1G.

Can BC337-16RL1G replace BC337-25RL1G in existing designs?

BC337-16RL1G can replace BC337-25RL1G only if the circuit tolerates lower minimum h_FE (100 vs. 160). In base-current-limited or high-gain-critical applications (e.g., low-noise preamps), gain reduction may increase distortion or require resistor value adjustments. Always verify I_B margin and V_CE(sat) under load for BC337-16RL1G in such cases.

What is the thermal resistance junction-to-ambient (R_JA) for BC337-16RL1G?

The thermal resistance junction-to-ambient (R_JA) for BC337-16RL1G is 200°C/W, measured under standard JEDEC test conditions (single-layer PCB, 1 in² copper pad). Actual R_JA in end equipment depends on PCB layout, copper area, airflow, and nearby heat sources - so system-level thermal validation is required for sustained 625 mW operation.

BC337-16RL1G 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)

BC337-16RL1G FAQ

1.How can I place an order for BC337-16RL1G through Aetrix?

Please submit a Request for Quotation (RFQ) for BC337-16RL1G 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 BC337-16RL1G reliable?

The price and inventory of BC337-16RL1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC337-16RL1G is usually 5 days.

3.What payment methods are accepted for BC337-16RL1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC337-16RL1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC337-16RL1G?

BC337-16RL1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC337-16RL1G 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 BC337-16RL1G?

For technical support, including BC337-16RL1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC337-16RL1G requirements.

6.How does Aetrix verify that BC337-16RL1G is sourced from the original manufacturer or authorized distributors?

All BC337-16RL1G 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 BC337-16RL1G meets industry standards.

7.What is the process for return or replacement of BC337-16RL1G?

All BC337-16RL1G units undergo pre-shipment inspection (PSI). If there is an issue with BC337-16RL1G, 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 BC337-16RL1G part is unused and in its original packaging.

Return procedure for BC337-16RL1G:

1.Submit a request within 90 days.

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

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