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onsemi BC327RL1
- Part No.:
- BC327RL1
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Datasheet:
-
BC327RL1.pdf
- Description:
- TRANS PNP 45V 0.8A TO92
- Quantity:
- Payment:
- Shipping:
Inventory:4,885
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Product details
Overview
BC327RL1 from onsemi is a PNP silicon general-purpose amplifier transistor in TO-92 package, rated for −45 VCEO, −800 mA continuous collector current, and 625 mW power dissipation at 25°C ambient. It delivers DC current gain (hFE) of 100–630 depending on operating point, with VCE(sat) ≤ −0.7 V at IC = −500 mA/IB = −50 mA, commonly used in low-voltage switching and linear amplification stages.
For engineers reviewing the BC327RL1 datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP polarity, TO-92 mechanical compatibility, guaranteed hFE binning (standard BC327 grade), thermal resistance (RJA = 200°C/W), and Pb-free tape-and-reel packaging (2000 units/reel) per ordering code BC327RL1.
Technical Context
The BC327RL1 operates as a medium-power PNP bipolar junction transistor optimized for linear amplification and saturated switching in DC-coupled or low-frequency AC circuits. Its design supports base-driven operation with VBE(on) ≈ −1.2 V at IC = −300 mA and fT = 260 MHz, enabling stable gain up to several tens of MHz under light loading.
Thermal performance is defined by RJC = 83.3°C/W and RJA = 200°C/W, with safe operating area (SOA) limited by second breakdown above 1 ms pulses. The device complies with JEDEC TO-92 outline (Case 29, Style 17), with pin 1 = Collector, pin 2 = Base, pin 3 = Emitter - confirmed by marking diagram and package dimensions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −45 Vdc - Maximum allowable collector-emitter voltage before breakdown; defines upper rail limit in PNP switch or amplifier designs. |
| IC (continuous) | −800 mAdc - Continuous collector current rating; sets maximum load-handling capability in relay drivers or output stages. |
| PD @ TA = 25°C | 625 mW - Power dissipation limit at room ambient; requires heatsinking or derating above 25°C (5.0 mW/°C). |
| hFE (IC = −100 mA) | 100–630 - DC current gain range across production bins; enables predictable base drive sizing in switching applications. |
| VCE(sat) | ≤ −0.7 V - Saturation voltage at IC/IB = 10; determines conduction loss and heat generation in ON-state switching. |
| fT | 260 MHz - Current-gain bandwidth product; supports small-signal amplification up to ~10–50 MHz depending on bias and load. |
Pinout & Package
BC327RL1 uses JEDEC-standard TO-92 package (Case 29, Style 17), with 3 leads in straight-line configuration and lead-to-lead pitch of 2.54 mm. Package outline conforms to ANSI Y14.5M-1982 tolerancing, with body dimensions 4.45 × 5.20 × 3.18 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Collector | Main current sink terminal; connects to positive supply rail in PNP common-emitter configurations. |
| 2 | Base | Control input; requires negative current relative to emitter to turn device ON; drives switching or bias networks. |
| 3 | Emitter | Current source terminal; typically tied to system ground or higher-potential node in high-side switch topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Pb-free construction | Complies with RoHS Directive 2011/65/EU; suitable for lead-free reflow soldering per J-STD-020. |
| TO-92 tape-and-reel packaging | 2000 units per reel (ordering code BC327RL1); enables automated SMT placement despite through-hole form factor. |
| Guaranteed hFE binning | Standard BC327 grade (not −16/−25/−40 variants); ensures minimum hFE ≥ 100 at IC = −100 mA, simplifying base resistor selection. |
| Low VCE(sat) | ≤ −0.7 V at IC = −500 mA/IB = −50 mA; reduces power loss and self-heating in saturated switching applications. |
Applications
| DC Power Supply Regulation | Microcontroller GPIO Interface |
|---|---|
Use Scenario: Linear pass transistor in adjustable 3.3 V/5 V LDO regulators with feedback control. IC Role / Device Role / Timing Role: PNP pass element regulating output voltage via emitter-follower configuration. Use Value: Low VCE(sat) minimizes dropout voltage; hFE stability ensures consistent loop gain across temperature. |
Use Scenario: Level-shifting and current amplification for 3.3 V MCU outputs driving 5 V loads. IC Role / Device Role / Timing Role: Active-low switch translating logic signals while sourcing up to 800 mA. Use Value: Verified TO-92 footprint compatibility with standard prototyping boards; no external pull-up required in open-collector mode. |
| Relay Driver Circuit | Audio Pre-amplifier Stage |
Use Scenario: Driving 12 V/500 mA electromagnetic relays from microcontroller I/O pins. IC Role / Device Role / Timing Role: Saturated PNP switch controlling relay coil current path to ground. Use Value: Guaranteed hFE ≥ 100 ensures reliable saturation with ≤ 5 mA base drive; TO-92 allows compact board layout. |
Use Scenario: Single-stage low-noise pre-amplifier for electret microphone signals in portable audio devices. IC Role / Device Role / Timing Role: Common-emitter amplifier with fixed bias network and emitter degeneration. Use Value: fT = 260 MHz provides ample bandwidth for 20 Hz–20 kHz audio; low Cob = 11 pF minimizes high-frequency roll-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC327-25RL1 | Higher hFE bin (160–400 at IC = −100 mA); otherwise identical ratings and package. | Better suited for low-base-drive applications where precise gain control is critical. | Select BC327-25RL1 when circuit requires guaranteed hFE ≥ 160 to reduce base current demand. |
| BC327G | Pb-free TO-92 in bulk packaging (5000 units); same electrical specs but different packaging format. | Preferred for manual assembly or low-volume prototyping where tape-and-reel is unnecessary. | Choose BC327G for hand-soldered evaluation boards or small-batch builds without SMT equipment. |
Compared with BC327-25RL1 and BC327G, the BC327RL1 offers standard-gain performance in automated assembly-ready tape-and-reel format - balancing cost, manufacturability, and design predictability for mid-volume production.
Availability
BC327RL1 is available at Aetrix Electronics and suitable for DC power supply regulation, microcontroller GPIO interfacing, and relay driver circuits requiring stable component supply, RoHS compliance, and TO-92 tape-and-reel logistics support.
Supply support for BC327RL1 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, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The BC327RL1 belongs to onsemi's legacy general-purpose bipolar transistor family, designed for cost-sensitive, medium-power linear and switching applications where reliability, consistency, and JEDEC-standard packaging are essential.
FAQ
What is the pin configuration of BC327RL1?
The BC327RL1 uses a TO-92 package with pin 1 = Collector, pin 2 = Base, and pin 3 = Emitter - confirmed by the official onsemi datasheet (BC327/D, Rev. 3, page 4). This arrangement is standardized across all BC327-series variants and matches JEDEC Case 29 outline. Always verify orientation using the flat side and lead numbering before PCB layout or assembly.
Is BC327RL1 RoHS compliant?
Yes, BC327RL1 is RoHS compliant and Pb-free, as indicated by the "G" suffix option (BC327RL1G) and explicitly stated in the onsemi Pb-Free Packages note (page 1). The BC327RL1 itself meets RoHS Directive 2011/65/EU requirements and is qualified for lead-free reflow soldering per J-STD-020.
What is the maximum power dissipation of BC327RL1 at 70°C ambient?
BC327RL1 has a maximum power dissipation of 625 mW at TA = 25°C, with a derating factor of 5.0 mW/°C above that temperature. At 70°C ambient, allowable power drops to 625 mW − (45°C × 5.0 mW/°C) = 400 mW. This value assumes free-air conditions; actual thermal performance depends on PCB copper area and airflow.
How does BC327RL1 differ from BC327-40RL1?
The BC327RL1 is the standard-gain variant (hFE = 100–630), while BC327-40RL1 is the high-gain variant (hFE = 250–630 at IC = −100 mA). Both share identical voltage/current ratings, package, and thermal specs. The BC327RL1 is preferred when moderate gain suffices and cost optimization is prioritized over tight hFE control.
Can BC327RL1 be used in audio amplifier circuits?
Yes, BC327RL1 is suitable for low-power audio pre-amplifier stages due to its fT = 260 MHz, low output capacitance (Cob = 11 pF), and stable hFE across signal swing. It has been validated in electret microphone biasing and single-stage CE amplifiers operating within 20 Hz–20 kHz. Avoid use in high-fidelity output stages due to limited power handling and SOA constraints.
BC327RL1 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:
- 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)
BC327RL1 FAQ
1.How can I place an order for BC327RL1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC327RL1 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 BC327RL1 reliable?
The price and inventory of BC327RL1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC327RL1 is usually 5 days.
3.What payment methods are accepted for BC327RL1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC327RL1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC327RL1?
BC327RL1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC327RL1 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 BC327RL1?
For technical support, including BC327RL1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC327RL1 requirements.
6.How does Aetrix verify that BC327RL1 is sourced from the original manufacturer or authorized distributors?
All BC327RL1 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 BC327RL1 meets industry standards.
7.What is the process for return or replacement of BC327RL1?
All BC327RL1 units undergo pre-shipment inspection (PSI). If there is an issue with BC327RL1, 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 BC327RL1 part is unused and in its original packaging.
Return procedure for BC327RL1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC327RL1 Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
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MMBT2222ALT1G
onsemi
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