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

onsemi BC369_J35Z

Name: BC369_J35Z
Brand: onsemi
SKU: BC369_J35Z
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC369_J35Z

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-226-3, TO-92-3 (TO-226AA) Formed Leads

Datasheet:: BC369_J35Z.pdf

Description:: TRANS PNP 20V 1.5A TO-92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC369_J35Z from Fairchild Semiconductor is a PNP general-purpose amplifier transistor in TO-92 package, rated for 20 V V_CEO, 1.5 A continuous collector current, and 625 mW power dissipation at 25°C - used in medium-power linear amplification and switching circuits up to 1.2 A in industrial control and power management stages.

For engineers reviewing the BC369_J35Z datasheet, pinout, applications, or equivalent options, key selection criteria include its PNP polarity, V_CE(sat) ≤ 0.5 V at I_C = 1.0 A / I_B = 100 mA, h_FE range of 50–375, f_T = 45 MHz, and thermal resistance R_θJA = 200 °C/W - all critical for thermal-aware analog and switching designs.

Technical Context

The BC369_J35Z operates as a silicon PNP bipolar junction transistor optimized for medium-power linear amplification and saturated switching. Its design supports DC current gain (h_FE) from 50 to 375 across I_C = 5 mA to 1.0 A, with guaranteed V_CE(sat) ≤ 0.5 V under high-current drive conditions.

It features negative-polarity voltage and current ratings per PNP convention, including V_(BR)CEO = 20 V, V_(BR)CES = 25 V, and V_(BR)EBO = 5.0 V. Junction temperature range spans −55°C to +150°C, with thermal derating of 5.0 mW/°C above 25°C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	20 V - maximum safe collector-emitter voltage before breakdown in open-base configuration
I_C (continuous)	1.5 A - absolute max DC collector current; usable up to 1.2 A per design intent
P_D @ 25°C	625 mW - total device dissipation at room temperature; derates linearly at 5.0 mW/°C above
h_FE	50–375 - DC current gain range across operating points (5 mA to 1.0 A), enabling stable biasing
f_T	45 MHz - unity-gain bandwidth at I_C = 10 mA / V_CE = 5.0 V, supporting RF-adjacent signal amplification
V_CE(sat)	≤ 0.5 V - low saturation voltage at I_C = 1.0 A / I_B = 100 mA, minimizing conduction loss in switches
R_θJA	200 °C/W - junction-to-ambient thermal resistance; dictates heatsinking needs in enclosed environments

Pinout & Package

BC369_J35Z is housed in a standard TO-92 plastic package with 3 leads. Pin identification follows JEDEC TO-92 outline: Emitter (lead 1), Base (lead 2), Collector (lead 3), viewed from flat side with leads down.

Pin/Terminal	Circuit Role	Design Meaning
E (Lead 1)	Emitter	Current exit terminal for PNP operation; connects to higher potential rail in common-emitter switches
B (Lead 2)	Base	Control input; requires negative base current relative to emitter to turn on device
C (Lead 3)	Collector	Current entry terminal; ties to load or lower-potential node in amplification or switching topologies

Key Features

Feature	Design Value
Medium-power PNP BJT	Rated for 1.2 A typical switching and linear use - bridges low- and high-power discrete applications
High h_FE range	50–375 enables robust DC bias stability across production lots and temperature extremes
Low V_CE(sat)	≤ 0.5 V at full 1.0 A load reduces power loss and self-heating in saturated switch mode
45 MHz f_T	Supports audio-frequency amplification and fast-switching control loops without gain collapse
−55°C to +150°C operation	Enables deployment in automotive engine bays, industrial motor drives, and outdoor power systems

Applications

Motor Drive Stage	DC-DC Converter Switch
Use Scenario: Driving small brushed DC motors (up to 24 V, 1 A) in industrial actuators and HVAC dampers. IC Role / Device Role / Timing Role: PNP switch controlling motor current path via emitter-follower or common-emitter topology. Use Value: Low V_CE(sat) minimizes heat generation during PWM on-time; h_FE ≥ 85 ensures reliable base drive at 100 mA.	Use Scenario: High-side switch in non-synchronous buck converter output stage for 12 V input, 5 V output. IC Role / Device Role / Timing Role: Saturated PNP transistor delivering regulated load current with minimal conduction loss. Use Value: 625 mW rating and 200 °C/W R_θJA allow operation at 75°C ambient without heatsink at <1 A duty cycle.
Linear Voltage Regulator Pass Element	Signal-Level Amplifier Stage
Use Scenario: Series pass transistor in adjustable 3-terminal linear regulator supplying 1.5 A to FPGA core rails. IC Role / Device Role / Timing Role: Medium-power PNP pass element dissipating up to 500 mW under worst-case dropout. Use Value: Guaranteed h_FE ≥ 60 at I_C = 1.0 A ensures stable loop gain and transient response.	Use Scenario: First-stage preamplifier in analog sensor signal chain (e.g., thermocouple or strain gauge interface). IC Role / Device Role / Timing Role: Low-noise, medium-gain PNP amplifier with f_T = 45 MHz supporting 20 kHz bandwidth. Use Value: V_(BR)EBO = 5.0 V permits safe biasing with ±5 V supplies; low C_CB maintains high-frequency fidelity.

Motor Drive Stage

DC-DC Converter Switch

Use Scenario: Driving small brushed DC motors (up to 24 V, 1 A) in industrial actuators and HVAC dampers.

IC Role / Device Role / Timing Role: PNP switch controlling motor current path via emitter-follower or common-emitter topology.

Use Value: Low V_CE(sat) minimizes heat generation during PWM on-time; h_FE ≥ 85 ensures reliable base drive at 100 mA.

Use Scenario: High-side switch in non-synchronous buck converter output stage for 12 V input, 5 V output.

IC Role / Device Role / Timing Role: Saturated PNP transistor delivering regulated load current with minimal conduction loss.

Use Value: 625 mW rating and 200 °C/W R_θJA allow operation at 75°C ambient without heatsink at <1 A duty cycle.

Linear Voltage Regulator Pass Element

Signal-Level Amplifier Stage

Use Scenario: Series pass transistor in adjustable 3-terminal linear regulator supplying 1.5 A to FPGA core rails.

IC Role / Device Role / Timing Role: Medium-power PNP pass element dissipating up to 500 mW under worst-case dropout.

Use Value: Guaranteed h_FE ≥ 60 at I_C = 1.0 A ensures stable loop gain and transient response.

Use Scenario: First-stage preamplifier in analog sensor signal chain (e.g., thermocouple or strain gauge interface).

IC Role / Device Role / Timing Role: Low-noise, medium-gain PNP amplifier with f_T = 45 MHz supporting 20 kHz bandwidth.

Use Value: V_(BR)EBO = 5.0 V permits safe biasing with ±5 V supplies; low C_CB maintains high-frequency fidelity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP amplifier and switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC327-40	Same TO-92 package; h_FE min = 250 (I_C = 100 mA), V_CEO = 45 V, P_D = 625 mW	Higher V_CEO suits 36 V systems; lower h_FE at high I_C vs BC369_J35Z's 60 min at 1.0 A	Select BC327-40 when higher breakdown margin is required; verify h_FE meets bias stability at target I_C.
MJD2955T4G	TO-220 package; I_C = 10 A, V_CEO = 60 V, P_D = 115 W - significantly higher power capability	Requires PCB layout change and heatsink; not drop-in - used where >1.5 A or >625 mW is needed	Choose MJD2955T4G only when BC369_J35Z thermal or current limits are exceeded; not a footprint replacement.

Compared with BC369_J35Z, BC327-40 offers higher voltage headroom but narrower high-current h_FE guarantee, while MJD2955T4G delivers order-of-magnitude higher power handling at the cost of package and thermal redesign.

Availability

BC369_J35Z is available at Aetrix Electronics and suitable for motor drive stages, DC-DC converter switches, linear voltage regulator pass elements, and signal-level amplifier stages requiring stable component supply and consistent parametric performance across production batches.

Supply support for BC369_J35Z 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

Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.

The BC369_J35Z belongs to Fairchild's legacy general-purpose bipolar transistor family, designed for cost-sensitive, medium-power amplification and switching in industrial and consumer equipment.

FAQ

What is the maximum collector current rating for BC369_J35Z?

The BC369_J35Z has an absolute maximum continuous collector current (I_C) of 1.5 A at T_A = 25°C. However, the datasheet specifies practical use up to 1.2 A for general-purpose amplifiers and switches. Derating applies above 25°C ambient, and pulsed operation requires factory consultation per note 2 in the datasheet. The BC369_J35Z must be operated within its SOA limits to avoid secondary breakdown.

Is BC369_J35Z a PNP or NPN transistor?

BC369_J35Z is a PNP bipolar junction transistor. All voltage and current polarities are negative per PNP convention: V_CE, V_CB, and I_C are defined with respect to emitter potential. This is explicitly stated in the "Notes" section and confirmed in OFF/ON characteristics tables. The BC369_J35Z cannot substitute for an NPN device without circuit topology changes.

What is the guaranteed h_FE range for BC369_J35Z at 1.0 A collector current?

At I_C = 1.0 A, V_CE = 1.0 V, and T_A = 25°C, the BC369_J35Z guarantees h_FE ≥ 60 (minimum) with no upper limit specified. The datasheet also lists h_FE ≥ 85 at I_C = 0.5 A and ≥ 50 at I_C = 5.0 mA. These values are measured and guaranteed - the BC369_J35Z supports stable bias design across this current range.

Does BC369_J35Z have a documented f_T value, and under what conditions?

Yes, BC369_J35Z has a specified f_T (current gain–bandwidth product) of 45 MHz, measured at I_C = 10 mA, V_CE = 5.0 V, and f = 35 MHz test frequency. This value appears in the "SMALL SIGNAL CHARACTERISTICS" table and is confirmed in the "Gain Bandwidth Product vs Collector Current" graph. The BC369_J35Z maintains usable gain up to audio and low-RF frequencies.

What is the thermal resistance from junction to ambient (R_θJA) for BC369_J35Z?

The BC369_J35Z has a specified R_θJA of 200 °C/W under standard mounting conditions on FR-4 PCB with minimal copper. This value assumes natural convection and defines the temperature rise per watt dissipated. For reliable operation at 625 mW, ambient must stay below ~125°C - the BC369_J35Z requires thermal awareness in enclosed or high-temperature environments.

BC369_J35Z Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 (TO-226AA) Formed Leads

Packaging:: Bulk

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 1.5 A

Voltage - Collector Emitter Breakdown (Max):: 20 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 100mA, 1A

Current - Collector Cutoff (Max):: 10µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 85 @ 500mA, 1V

Power - Max:: 625 mW

Frequency - Transition:: 45MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

BC369_J35Z FAQ

1.How can I place an order for BC369_J35Z through Aetrix?

Please submit a Request for Quotation (RFQ) for BC369_J35Z 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 BC369_J35Z reliable?

The price and inventory of BC369_J35Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC369_J35Z is usually 5 days.

3.What payment methods are accepted for BC369_J35Z?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC369_J35Z transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC369_J35Z?

BC369_J35Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC369_J35Z 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 BC369_J35Z?

For technical support, including BC369_J35Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC369_J35Z requirements.

6.How does Aetrix verify that BC369_J35Z is sourced from the original manufacturer or authorized distributors?

All BC369_J35Z 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 BC369_J35Z meets industry standards.

7.What is the process for return or replacement of BC369_J35Z?

All BC369_J35Z units undergo pre-shipment inspection (PSI). If there is an issue with BC369_J35Z, 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 BC369_J35Z part is unused and in its original packaging.

Return procedure for BC369_J35Z:

1.Submit a request within 90 days.

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

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