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

NXP Semiconductors BC327-25,116

Name: BC327-25,116
Brand: NXP Semiconductors
SKU: BC327-25,116
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC327-25,116

Manufacturer:: NXP Semiconductors

Category:: Single Bipolar Transistors

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

Datasheet:: BC327-25,116.pdf

Description:: TRANS PNP 45V 0.5A TO-92-3

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Product details

Overview

BC327-25,116 from Nexperia is a PNP general-purpose bipolar junction transistor (BJT) in TO-92 (SOT54A) through-hole package, rated for −45 V V_CEO, −500 mA I_C, and DC current gain (h_FE) of 160–400 at I_C = −100 mA and V_CE = −1 V. It delivers −700 mV V_CE(sat) at I_C = −500 mA / I_B = −50 mA and supports industrial switching and linear amplification in low-voltage DC control circuits.

For engineers reviewing the BC327-25,116 datasheet, BC327-25,116 pinout, BC327-25,116 application, or BC327-25,116 equivalent, this page provides verified electrical parameters, terminal mapping for SOT54A, thermal resistance (R_th(j-a) = 200 K/W), complementary NPN pairing with BC337-25, and validated alternatives for discrete BJT replacement in legacy through-hole designs.

Technical Context

This device operates as a medium-power PNP BJT optimized for DC switching and analog amplification in cost-sensitive, non-high-frequency applications. Its −45 V collector-emitter breakdown voltage and −500 mA continuous collector current support robust operation in 24 V industrial control rails and 12 V automotive auxiliary circuits.

The BC327-25,116 exhibits a guaranteed h_FE range of 160–400 under standardized test conditions (I_C = −100 mA, V_CE = −1 V), distinguishing it from the -16 (100–250) and -40 (250–600) variants. Its SOT54A package features wide-pitch leads (e = 5.08 mm) for improved mechanical stability in manual assembly and wave soldering.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	−45 V - Maximum safe collector-emitter voltage with base open; defines rail compatibility up to 40 V DC systems.
I_C (DC)	−500 mA - Continuous collector current rating; supports relay drivers and LED array switches up to 0.5 A load.
h_FE	160–400 - DC current gain at I_C = −100 mA / V_CE = −1 V; enables low-base-drive switching in microcontroller GPIO interfaces.
V_CE(sat)	−700 mV - Collector-emitter saturation voltage at I_C = −500 mA / I_B = −50 mA; ensures <1 W power dissipation in saturated switch mode.
P_tot	625 mW - Total power dissipation at T_amb ≤ 25 °C; sets thermal derating baseline for PCB copper area planning.
R_th(j-a)	200 K/W - Junction-to-ambient thermal resistance on FR4 board; informs heatsinking requirements for sustained >300 mA operation.
f_T	80 MHz - Transition frequency at I_C = −10 mA / V_CE = −5 V; confirms suitability for audio-band amplification but not RF use.

Pinout & Package

SOT54A (SC-43A variant) is a plastic single-ended leaded through-hole package with wide-pitch leads (e = 5.08 mm), designed for mechanical robustness and compatibility with standard 0.1" pitch prototyping and production boards.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter	Current exit node; connects to higher potential (e.g., +V_CC) in common-emitter switch configurations.
2	Base	Control input; requires ~−1.2 V V_BE at full conduction; driven by MCU GPIO or logic-level signal via current-limiting resistor.
3	Collector	Current entry node; ties to load (e.g., relay coil or LED anode); pulled low to activate PNP switch.

Key Features

Feature	Design Value
High DC current gain (h_FE)	160–400 range reduces required base drive current, easing interface with 3.3 V/5 V microcontrollers.
Low saturation voltage	V_CE(sat) ≤ −700 mV at full rated current minimizes power loss and self-heating in switching applications.
Through-hole SOT54A package	Wide-pitch (5.08 mm) leads improve solder joint reliability and simplify hand-soldering versus narrow-pitch TO-92 variants.
Industrial temperature range	−65 °C to +150 °C operating/storage range supports deployment in automotive engine bays and industrial enclosures.

Applications

Relay Driver Circuit	LED Current Sink
Use Scenario: Driving 12 V/24 V electromagnetic relays in PLC output modules and HVAC controllers. IC Role / Device Role / Timing Role: PNP switch controlling relay coil current path between supply rail and ground. Use Value: −500 mA I_C rating and −700 mV V_CE(sat) ensure reliable coil activation with <0.35 W dissipation at full load.	Use Scenario: Sinking current from multi-segment LED displays or status indicator arrays in instrumentation panels. IC Role / Device Role / Timing Role: Constant-current sink stage regulating LED brightness via base resistor tuning. Use Value: Tight h_FE bin (160–400) enables predictable current matching across multiple BC327-25,116 units without individual calibration.
Linear Voltage Regulator Pass Element	Discrete Logic Level Shifter
Use Scenario: Low-dropout pass transistor in adjustable 5 V/3.3 V regulators for analog sensor subsystems. IC Role / Device Role / Timing Role: Emitter-follower configured as series pass element with feedback control loop. Use Value: −45 V V_CEO and 80 MHz f_T support stable regulation up to 30 V input while maintaining bandwidth for error amplifier compensation.	Use Scenario: Bidirectional level translation between 5 V microcontroller GPIOs and 3.3 V peripheral interfaces. IC Role / Device Role / Timing Role: Active pull-up device enabling open-drain bus compatibility (e.g., I²C pull-up). Use Value: −5 V V_EBO rating allows safe operation with 3.3 V logic levels referenced to 5 V domain, preventing base-emitter junction breakdown.

Relay Driver Circuit

LED Current Sink

Use Scenario: Driving 12 V/24 V electromagnetic relays in PLC output modules and HVAC controllers.

IC Role / Device Role / Timing Role: PNP switch controlling relay coil current path between supply rail and ground.

Use Value: −500 mA I_C rating and −700 mV V_CE(sat) ensure reliable coil activation with <0.35 W dissipation at full load.

Use Scenario: Sinking current from multi-segment LED displays or status indicator arrays in instrumentation panels.

IC Role / Device Role / Timing Role: Constant-current sink stage regulating LED brightness via base resistor tuning.

Use Value: Tight h_FE bin (160–400) enables predictable current matching across multiple BC327-25,116 units without individual calibration.

Linear Voltage Regulator Pass Element

Discrete Logic Level Shifter

Use Scenario: Low-dropout pass transistor in adjustable 5 V/3.3 V regulators for analog sensor subsystems.

IC Role / Device Role / Timing Role: Emitter-follower configured as series pass element with feedback control loop.

Use Value: −45 V V_CEO and 80 MHz f_T support stable regulation up to 30 V input while maintaining bandwidth for error amplifier compensation.

Use Scenario: Bidirectional level translation between 5 V microcontroller GPIOs and 3.3 V peripheral interfaces.

IC Role / Device Role / Timing Role: Active pull-up device enabling open-drain bus compatibility (e.g., I²C pull-up).

Use Value: −5 V V_EBO rating allows safe operation with 3.3 V logic levels referenced to 5 V domain, preventing base-emitter junction breakdown.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC327-25,412	Same silicon die and electrical specs; differs only in packaging - bulk straight-lead SOT54 vs. tape-and-reel SOT54A.	Optimized for manual prototyping and small-batch through-hole assembly rather than automated pick-and-place.	Select BC327-25,412 for lab builds or low-volume production where reel handling is unnecessary.
BC327-40,116	Higher h_FE (250–600) and identical V_CEO/I_C/package; increases base drive margin but raises sensitivity to leakage and thermal drift.	Better suited for low-base-current applications (e.g., high-impedance sensor buffers) but less stable in temperature-varying environments.	Choose BC327-40,116 only when gain consistency at very low I_B is critical and thermal management is assured.

Compared with BC327-25,116, BC327-25,412 offers identical performance in a different packaging format for flexibility in assembly method, while BC327-40,116 trades gain stability for higher h_FE-making the -25 variant the balanced choice for general-purpose industrial switching where predictability and thermal resilience matter most.

Availability

BC327-25,116 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and consumer appliance power stages requiring stable component supply with long-term obsolescence mitigation.

Supply support for BC327-25,116 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

Nexperia is a global leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, high-reliability components for automotive and industrial markets.

The BC327 series belongs to Nexperia's general-purpose BJT portfolio, engineered for cost-effective, robust switching and amplification in legacy through-hole and space-constrained designs where reliability and parametric consistency are essential.

FAQ

What is the maximum collector-emitter voltage rating for BC327-25,116?

The BC327-25,116 has a maximum collector-emitter voltage (V_CEO) rating of −45 V under open-base conditions with I_C = 10 mA. This rating ensures safe operation in 24 V and 36 V DC systems with appropriate design margin, and is confirmed in Table 2 and Table 6 of the official Nexperia datasheet (Rev. 06, 2009).

How does BC327-25,116 differ from BC327-16,116 and BC327-40,116?

The BC327-25,116 differs from BC327-16,116 and BC327-40,116 solely in its DC current gain (h_FE) bin: 160–400 vs. 100–250 and 250–600 respectively. All three share identical V_CEO, I_C, V_CE(sat), package (SOT54A), and thermal characteristics. The -25 variant balances gain and stability for general-purpose use.

What is the pin configuration of BC327-25,116 in the SOT54A package?

The BC327-25,116 in SOT54A package uses emitter-base-collector pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. This is explicitly defined in Table 3 ("Pinning") of the Nexperia BC807/BC327 datasheet and applies identically to all SOT54, SOT54A, and SOT54 variant packages listed for BC327.

Is BC327-25,116 RoHS compliant and halogen-free?

Yes, BC327-25,116 meets RoHS Directive 2011/65/EU and is halogen-free per Nexperia's material declarations. As a standard product manufactured post-2017 under Nexperia, it adheres to current environmental compliance standards, with full documentation available via Nexperia's product change notifications and compliance portal.

What is the thermal resistance (R_th(j-a)) of BC327-25,116 on a standard FR4 PCB?

The BC327-25,116 has a junction-to-ambient thermal resistance (R_th(j-a)) of 200 K/W when mounted on a standard FR4 printed-circuit board with single-sided copper, tin-plated, and standard footprint - as specified in Table 7 of the Nexperia datasheet. This value guides thermal derating above 25 °C ambient.

BC327-25,116 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 500 mA

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

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

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 160 @ 100mA, 1V

Power - Max:: 625 mW

Frequency - Transition:: 80MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

BC327-25,116 FAQ

1.How can I place an order for BC327-25,116 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC327-25,116 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 BC327-25,116 reliable?

The price and inventory of BC327-25,116 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC327-25,116 is usually 5 days.

3.What payment methods are accepted for BC327-25,116?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC327-25,116 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC327-25,116?

BC327-25,116 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC327-25,116 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 BC327-25,116?

For technical support, including BC327-25,116 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC327-25,116 requirements.

6.How does Aetrix verify that BC327-25,116 is sourced from the original manufacturer or authorized distributors?

All BC327-25,116 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 BC327-25,116 meets industry standards.

7.What is the process for return or replacement of BC327-25,116?

All BC327-25,116 units undergo pre-shipment inspection (PSI). If there is an issue with BC327-25,116, 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 BC327-25,116 part is unused and in its original packaging.

Return procedure for BC327-25,116:

1.Submit a request within 90 days.

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

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