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

onsemi BC327-16ZL1G

Name: BC327-16ZL1G
Brand: onsemi
SKU: BC327-16ZL1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC327-16ZL1G

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

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

Datasheet:: BC327-16ZL1G.pdf

Description:: TRANS PNP 45V 0.8A TO92

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC327-16ZL1G from onsemi is a PNP silicon general-purpose amplifier transistor in TO-92 package, rated for −45 V V_CEO, −800 mA I_C, 625 mW power dissipation at T_A = 25°C, and minimum DC current gain (h_FE) of 100 at I_C = −100 mA, V_CE = −1.0 V. It serves as a medium-power switching or linear amplification device in low-voltage DC control circuits, motor drivers, and LED load interfaces.

For engineers reviewing the BC327-16ZL1G datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, guaranteed h_FE ≥ 100 at −100 mA, TO-92 mechanical compatibility, thermal resistance R_JA = 200°C/W, and Pb-free compliance per J-STD-609.

Technical Context

The BC327-16ZL1G operates as a discrete bipolar junction transistor with fixed PNP polarity and base-controlled current amplification. Its safe operating area (SOA) is defined up to −1.0 V V_CE at −500 mA I_C, with second breakdown limits active beyond 1 ms pulse width. Thermal performance is governed by R_JC = 83.3°C/W and R_JA = 200°C/W under standard mounting conditions.

Electrical behavior includes V_BE(on) ≤ −1.2 V at I_C = −300 mA, V_CE(sat) ≤ −0.7 V at I_C = −500 mA / I_B = −50 mA, and f_T = 260 MHz typical at I_C = −10 mA. Cutoff leakage currents (I_CBO, I_CES, I_EBO) are all ≤ −100 nA, supporting stable off-state integrity in bias-sensitive analog stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−45 V - Maximum collector-emitter voltage before breakdown; defines upper rail limit in PNP switch applications
I_C	−800 mA - Continuous collector current rating; supports medium-current loads like relay coils or small solenoids
h_FE (min)	100 @ I_C = −100 mA - Minimum DC current gain ensures predictable base drive sizing for saturation switching
P_D	625 mW @ T_A = 25°C - Power dissipation limit sets thermal derating requirement: −5.0 mW/°C above 25°C ambient
f_T	260 MHz typical - Transition frequency enables use in audio-frequency amplifiers and low-speed digital switching
R_JA	200°C/W - Junction-to-ambient thermal resistance determines heatsinking need for sustained >300 mA operation

Pinout & Package

Package: TO-92 (Case 29-11, Style 17), molded plastic with axial leads; Pb-free per J-STD-609, RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1	Collector	Primary current sink terminal; connected to higher-potential rail in PNP configurations
2	Base	Control input; negative-going current injection turns device ON; requires current-limiting resistor
3	Emitter	Current source terminal; typically tied to system ground or positive supply return path

Key Features

Feature	Design Value
Guaranteed h_FE binning	BC327-16 variant ensures h_FE ≥ 100 (not 40 or 250); eliminates design margin uncertainty in gain-critical bias networks
Pb-free TO-92 packaging	ZL1G suffix confirms J-STD-609 Class 2a Pb-free construction; compatible with lead-free reflow profiles (peak 260°C)
Low V_CE(sat)	≤ −0.7 V at I_C/I_B = 10 ensures <0.35 W conduction loss at −500 mA, reducing thermal stress in compact layouts
High breakdown voltage	V_CES = −50 V allows safe operation with transient spikes up to −45 V without avalanche conduction

Applications

DC Motor Control	LED Driver Circuit
Use Scenario: Driving 12 V brushed DC motors in portable tools or HVAC actuators requiring bidirectional PWM control via H-bridge PNP legs. IC Role / Device Role / Timing Role: PNP high-side switch providing current sinking path during active-low logic phase; complements NPN low-side devices. Use Value: −45 V V_CEO withstands inductive kickback; −800 mA I_C supports 500–700 mA motor stall current with safety margin.	Use Scenario: Constant-current LED string driver in automotive interior lighting or industrial status indicators. IC Role / Device Role / Timing Role: Linear current regulator using emitter-follower configuration with feedback resistor; base driven by microcontroller GPIO. Use Value: Tight h_FE bin (100–250) enables precise current setting; low V_CE(sat) minimizes voltage headroom loss across series LEDs.
Relay Driver Interface	Level-Shifting Logic Buffer
Use Scenario: Interfacing 3.3 V or 5 V microcontrollers to 12–24 V electromagnetic relays in PLC I/O modules. IC Role / Device Role / Timing Role: Inverting switch that pulls relay coil to ground when base is pulled high via current-limiting resistor. Use Value: −50 V V_CES clamps flyback voltage safely; 625 mW P_D accommodates 100 ms relay pull-in surges without thermal runaway.	Use Scenario: Converting TTL/CMOS logic levels between mixed-voltage subsystems (e.g., 3.3 V MCU to 5 V sensor interface). IC Role / Device Role / Timing Role: Active-low level shifter using common-emitter configuration with collector pull-up to target rail. Use Value: 260 MHz f_T supports clean signal edges up to ~10 MHz; low Cob (11 pF) preserves rise/fall time integrity.

DC Motor Control

LED Driver Circuit

Use Scenario: Driving 12 V brushed DC motors in portable tools or HVAC actuators requiring bidirectional PWM control via H-bridge PNP legs.

IC Role / Device Role / Timing Role: PNP high-side switch providing current sinking path during active-low logic phase; complements NPN low-side devices.

Use Value: −45 V V_CEO withstands inductive kickback; −800 mA I_C supports 500–700 mA motor stall current with safety margin.

Use Scenario: Constant-current LED string driver in automotive interior lighting or industrial status indicators.

IC Role / Device Role / Timing Role: Linear current regulator using emitter-follower configuration with feedback resistor; base driven by microcontroller GPIO.

Use Value: Tight h_FE bin (100–250) enables precise current setting; low V_CE(sat) minimizes voltage headroom loss across series LEDs.

Relay Driver Interface

Level-Shifting Logic Buffer

Use Scenario: Interfacing 3.3 V or 5 V microcontrollers to 12–24 V electromagnetic relays in PLC I/O modules.

IC Role / Device Role / Timing Role: Inverting switch that pulls relay coil to ground when base is pulled high via current-limiting resistor.

Use Value: −50 V V_CES clamps flyback voltage safely; 625 mW P_D accommodates 100 ms relay pull-in surges without thermal runaway.

Use Scenario: Converting TTL/CMOS logic levels between mixed-voltage subsystems (e.g., 3.3 V MCU to 5 V sensor interface).

IC Role / Device Role / Timing Role: Active-low level shifter using common-emitter configuration with collector pull-up to target rail.

Use Value: 260 MHz f_T supports clean signal edges up to ~10 MHz; low Cob (11 pF) preserves rise/fall time integrity.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC327-16RL1G	Same die, TO-92 tape-and-reel packaging (2000 pcs/reel); identical electrical specs and thermal ratings	No difference in circuit function; differs only in logistics format-designed for automated SMT placement vs. ZL1G's ammo box	Select BC327-16RL1G for high-volume pick-and-place assembly; BC327-16ZL1G suits manual prototyping or low-volume production
BC327-25ZL1G	Higher h_FE bin (160–400 min/max); otherwise identical V_CEO, I_C, P_D, and package	Enables reduced base drive current in high-gain analog amplifiers but increases sensitivity to thermal drift in switching designs	Choose BC327-25ZL1G where tighter gain control or lower base current is critical; retain BC327-16ZL1G for predictable, moderate-gain switching

Compared with BC327-16RL1G and BC327-25ZL1G, the BC327-16ZL1G offers optimal balance of gain stability, thermal predictability, and Pb-free TO-92 form factor for general-purpose PNP switching-making it preferred for cost-sensitive, medium-volume industrial controls where consistent h_FE ≥ 100 is required without over-specifying gain.

Availability

BC327-16ZL1G is available at Aetrix Electronics and suitable for DC motor control, LED driver circuits, relay driver interfaces, and level-shifting logic buffers requiring stable component supply and Pb-free compliance.

Supply support for BC327-16ZL1G 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 manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The BC327-16ZL1G belongs to onsemi's legacy general-purpose bipolar transistor family, designed for cost-effective, reliable discrete switching and amplification in non-safety-critical industrial and consumer electronics.

FAQ

What is the maximum continuous collector current rating for BC327-16ZL1G?

The BC327-16ZL1G has a maximum continuous collector current (I_C) rating of −800 mA at T_A = 25°C. This rating assumes proper PCB copper area for heat dissipation; derating applies at higher ambient temperatures per the 5.0 mW/°C slope specified in the datasheet. Exceeding this current risks thermal runaway or permanent degradation of the BC327-16ZL1G.

Does BC327-16ZL1G support lead-free soldering processes?

Yes, the BC327-16ZL1G is Pb-free and compliant with J-STD-609 Class 2a. It is qualified for standard lead-free reflow profiles with peak temperatures up to 260°C. The "G" suffix explicitly denotes Pb-free construction, and the device meets RoHS Directive 2011/65/EU requirements-critical for modern BC327-16ZL1G deployments in regulated markets.

How does the h_FE of BC327-16ZL1G compare to other variants in the BC327 family?

The BC327-16ZL1G guarantees a minimum h_FE of 100 at I_C = −100 mA and V_CE = −1.0 V. This distinguishes it from BC327-25ZL1G (min 160) and BC327-40ZL1G (min 250). The BC327-16ZL1G provides predictable, moderate gain ideal for stable switching-avoiding the higher gain variability seen in BC327-25ZL1G while offering more drive margin than the base BC327.

What is the thermal resistance from junction to ambient (R_JA) for BC327-16ZL1G?

The BC327-16ZL1G has a specified R_JA of 200°C/W under standard test conditions (JEDEC 51-2, single-layer 1 in² copper pad). This value assumes no added heatsink; actual R_JA improves with larger copper areas or forced airflow. For sustained operation above 300 mA, thermal simulation using this R_JA is essential to ensure the BC327-16ZL1G junction temperature remains below 150°C.

Can BC327-16ZL1G be used as a direct replacement for BC327-16 in existing designs?

Yes, the BC327-16ZL1G is a drop-in replacement for BC327-16 in terms of electrical performance and pinout. The "ZL1G" suffix adds Pb-free compliance and ammo-box packaging but retains identical TO-92 footprint, terminal assignment (pin 1 = collector, pin 2 = base, pin 3 = emitter), and all key parameters-including V_CEO, I_C, h_FE, and thermal characteristics-of the BC327-16ZL1G.

BC327-16ZL1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Transistor Type:: PNP

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:: 260MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

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

BC327-16ZL1G FAQ

1.How can I place an order for BC327-16ZL1G through Aetrix?

Please submit a Request for Quotation (RFQ) for BC327-16ZL1G 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 BC327-16ZL1G reliable?

The price and inventory of BC327-16ZL1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC327-16ZL1G is usually 5 days.

3.What payment methods are accepted for BC327-16ZL1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC327-16ZL1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC327-16ZL1G?

BC327-16ZL1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC327-16ZL1G 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 BC327-16ZL1G?

For technical support, including BC327-16ZL1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC327-16ZL1G requirements.

6.How does Aetrix verify that BC327-16ZL1G is sourced from the original manufacturer or authorized distributors?

All BC327-16ZL1G 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 BC327-16ZL1G meets industry standards.

7.What is the process for return or replacement of BC327-16ZL1G?

All BC327-16ZL1G units undergo pre-shipment inspection (PSI). If there is an issue with BC327-16ZL1G, 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 BC327-16ZL1G part is unused and in its original packaging.

Return procedure for BC327-16ZL1G:

1.Submit a request within 90 days.

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

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