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NXP Semiconductors BC327-40,116
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- Part No.:
- BC327-40,116
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
BC327-40,116.pdf
- Description:
- TRANS PNP 45V 0.5A TO-92-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,277
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Product details
Overview
BC327-40,116 from Nexperia is a PNP general-purpose bipolar junction transistor (BJT) in TO-92 (SOT54A) through-hole package, rated for −45 V VCEO, −500 mA IC, and 625 mW Ptot, with DC current gain (hFE) of 250–600 at IC = −100 mA and VCE = −1 V. It serves as a medium-power switching and linear amplification device in industrial control logic, relay drivers, and low-frequency signal conditioning circuits.
For engineers reviewing the BC327-40,116 datasheet, BC327-40,116 pinout, BC327-40,116 application, or BC327-40,116 equivalent, this page delivers verified electrical parameters, thermal behavior, pin configuration, real-world use cases, and validated alternative parts - all specific to the BC327-40,116 variant in SOT54A packaging with wide-pitch lead spacing.
Technical Context
The BC327-40,116 operates as a silicon PNP BJT with epitaxial base construction, optimized for stable DC gain across temperature (−55 °C to +150 °C) and robust saturation performance (VCEsat ≤ −700 mV at IC = −500 mA, IB = −50 mA). Its design supports reliable switching in 24 V industrial logic interfaces and analog amplification in sensor front-ends where moderate voltage headroom and predictable hFE dispersion are required.
Thermally, it features Rth(j-a) = 200 K/W on FR4 PCB with single-sided copper, enabling continuous operation up to +150 °C junction temperature. The SOT54A package provides mechanical stability for wave-soldered through-hole assembly while maintaining compatibility with legacy TO-92 footprints requiring 5.08 mm lead pitch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 V: Maximum collector-emitter blocking voltage with open base; enables use in 36 V DC supply rails with safety margin. |
| IC (DC) | −500 mA: Continuous collector current rating; supports driving small relays, LEDs, or logic-level MOSFET gates. |
| hFE | 250–600 at IC = −100 mA, VCE = −1 V: High and tightly binned DC gain ensures consistent base drive requirements across production lots. |
| VCEsat | ≤ −700 mV at IC = −500 mA, IB = −50 mA: Low saturation voltage minimizes power loss and heat generation in switching applications. |
| Ptot | 625 mW at Tamb ≤ 25 °C: Power dissipation capability suitable for non-heatsinked PCB mounting in ambient-temperature-controlled enclosures. |
| Rth(j-a) | 200 K/W: Thermal resistance confirms effective heat transfer from junction to ambient on standard FR4 board, supporting sustained 300–400 mW operation. |
| fT | 80 MHz: Transition frequency allows stable operation up to low-MHz switching frequencies and audio-band amplification without phase inversion. |
Pinout & Package
BC327-40,116 uses the SOT54A (TO-92 wide-pitch) plastic through-hole package with 5.08 mm lead spacing, designed for mechanical robustness and compatibility with automated wave soldering. Pin 1 is emitter, Pin 2 is base, Pin 3 is collector - matching JEITA SC-43A and IEC TO-92 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter | Current sink terminal; connected to circuit ground or negative rail in common-emitter configurations. |
| 2 | Base | Control input; requires current-limited drive (e.g., via series resistor) to bias transistor into active or saturation region. |
| 3 | Collector | Output terminal; connects to load (e.g., relay coil, LED anode) referenced to positive supply in high-side switch topology. |
Key Features
| Feature | Design Value |
|---|---|
| High DC current gain binning | hFE = 250–600 (BC327-40 grade): Reduces variation in base drive design across production batches. |
| Low saturation voltage | VCEsat ≤ −700 mV at full rated current: Enables efficient switching with <150 mW conduction loss at 500 mA. |
| Wide operating temperature range | −65 °C to +150 °C storage and junction temperature: Supports deployment in automotive under-hood and industrial outdoor environments. |
| Robust thermal performance | Rth(j-a) = 200 K/W: Allows 400 mW continuous dissipation without heatsink on standard PCB layout. |
| TO-92 wide-pitch mechanical reliability | SOT54A package with 5.08 mm lead pitch: Improves solder joint integrity and reduces stress-induced lead fracture during board flexure or thermal cycling. |
Applications
| Industrial Relay Driver | Low-Voltage Logic Level Shifter |
|---|---|
|
Use Scenario: Driving 24 V DC electromagnetic relays in PLC I/O modules with microcontroller GPIO outputs. IC Role / Device Role / Timing Role: PNP switch configured in common-emitter mode, sinking relay coil current to ground when base is pulled low. Use Value: VCEsat ≤ −700 mV ensures <17 mW power loss at 500 mA, eliminating need for external flyback diode thermal derating. |
Use Scenario: Translating 3.3 V CMOS logic signals to 5 V or 12 V levels for legacy sensor interfaces. IC Role / Device Role / Timing Role: Active-low level shifter using emitter-follower or common-base configuration for bidirectional voltage translation. Use Value: hFE ≥ 250 guarantees sufficient current gain to drive 10 kΩ loads with <100 µA base current, minimizing MCU port loading. |
| Linear Audio Pre-amplifier Stage | Overcurrent Protection Circuit |
|
Use Scenario: Low-noise pre-amplification of piezoelectric sensor outputs in condition monitoring equipment. IC Role / Device Role / Timing Role: Common-collector (emitter-follower) buffer providing high input impedance and unity voltage gain. Use Value: fT = 80 MHz and low Cc = 5 pF ensure flat frequency response up to 20 kHz with minimal phase shift. |
Use Scenario: Current-limiting element in adjustable DC power supply feedback paths. IC Role / Device Role / Timing Role: PNP pass transistor controlled by op-amp error amplifier to regulate output current. Use Value: Tight hFE binning (250–600) enables accurate ±3% current limit setting without per-unit calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC327-40,412 | SOT54 (standard TO-92, 2.54 mm lead pitch) instead of SOT54A (5.08 mm); identical electrical specs. | Requires PCB footprint change; unsuitable for wave-soldered assemblies needing wide-pitch mechanical stability. | Select BC327-40,412 only when using legacy TO-92 land patterns or manual soldering workflows. |
| MJD2955G | Higher power (1.75 W), higher voltage (−60 V), TO-220 package; hFE = 20–70 (lower and wider spread). | Used in high-current (>1 A) linear regulators or motor drivers where BC327-40,116 lacks power handling. | Choose MJD2955G only when >625 mW dissipation or >500 mA continuous current is required; not a drop-in replacement. |
Compared with BC327-40,116, BC327-40,412 offers identical electrical performance but demands PCB layout revision for narrow-pitch leads, while MJD2955G trades gain precision and compact size for higher power capability - making BC327-40,116 optimal for space-constrained, gain-critical 500 mA switching tasks.
Availability
BC327-40,116 is available at Aetrix Electronics and suitable for industrial control systems, relay interface modules, and low-voltage power management circuits requiring stable component supply, long-term manufacturability, and RoHS-compliant through-hole assembly.
Supply support for BC327-40,116 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, spun off from NXP in 2017, specializing in high-volume, high-reliability transistors, diodes, and logic devices for automotive and industrial markets.
The BC327 series belongs to Nexperia's general-purpose bipolar transistor product line, engineered for cost-effective, robust switching and amplification in non-safety-critical industrial and consumer applications.
FAQ
What is the maximum collector-emitter voltage rating for BC327-40,116?
The BC327-40,116 has a maximum collector-emitter voltage (VCEO) rating of −45 V under open-base conditions with IC = 10 mA. This rating ensures safe operation in 36 V DC systems with adequate margin against transients and ripple. Exceeding −45 V risks avalanche breakdown and permanent damage to the BC327-40,116 junction.
Does BC327-40,116 have a guaranteed minimum DC current gain?
Yes, the BC327-40,116 guarantees hFE ≥ 250 at IC = −100 mA and VCE = −1 V, with an upper limit of 600. This binning distinguishes it from BC327-16 (100–250) and BC327-25 (160–400), making the BC327-40,116 ideal for designs requiring predictable base drive current.
What package type does BC327-40,116 use, and how does it differ from standard TO-92?
The BC327-40,116 uses the SOT54A package - a TO-92 variant with 5.08 mm lead pitch (vs. 2.54 mm in standard SOT54). This wide-pitch configuration improves mechanical reliability during wave soldering and reduces stress on solder joints in vibration-prone industrial environments, while retaining the same pinout (E-B-C) as the BC327-40,412.
Can BC327-40,116 replace BC327-40,412 in an existing design?
No - BC327-40,116 (SOT54A, 5.08 mm pitch) is not mechanically compatible with BC327-40,412 (SOT54, 2.54 mm pitch). Substituting them requires PCB footprint redesign. Electrically they are identical, but the BC327-40,116's wider lead spacing prevents insertion into standard TO-92 holes without modification.
What is the thermal resistance of BC327-40,116, and how does it affect PCB layout?
The BC327-40,116 has a junction-to-ambient thermal resistance (Rth(j-a)) of 200 K/W when mounted on FR4 with single-sided copper. This means a 100 mW power dissipation raises junction temperature by 20 °C above ambient. To maintain Tj ≤ 150 °C, keep ambient below 130 °C or add copper pour around the emitter/collector pads to enhance heat spreading - critical for sustained BC327-40,116 operation.
BC327-40,116 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:
- 250 @ 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
BC327-40,116 FAQ
1.How can I place an order for BC327-40,116 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC327-40,116 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 BC327-40,116 reliable?
The price and inventory of BC327-40,116 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC327-40,116 is usually 5 days.
3.What payment methods are accepted for BC327-40,116?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC327-40,116 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC327-40,116?
BC327-40,116 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC327-40,116 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 BC327-40,116?
For technical support, including BC327-40,116 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC327-40,116 requirements.
6.How does Aetrix verify that BC327-40,116 is sourced from the original manufacturer or authorized distributors?
All BC327-40,116 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 BC327-40,116 meets industry standards.
7.What is the process for return or replacement of BC327-40,116?
All BC327-40,116 units undergo pre-shipment inspection (PSI). If there is an issue with BC327-40,116, 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 BC327-40,116 part is unused and in its original packaging.
Return procedure for BC327-40,116:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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