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onsemi BC848BLT3
- Part No.:
- BC848BLT3
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- -
- Datasheet:
-
BC848BLT3.pdf
- Description:
- TRANSISTOR NPN 30V 100MA SOT-23
- Quantity:
- Payment:
- Shipping:
Inventory:310,000
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Product details
Overview
BC848BLT3 from onsemi is an NPN general-purpose silicon transistor in SOT-23 package, rated for 30 VCEO, 100 mA continuous collector current, and 225 mW power dissipation on FR-5 board; it delivers hFE = 200–450 at IC = 2 mA, VCE = 5 V, and is widely used in low-voltage signal switching and amplification circuits in consumer and industrial electronics.
For engineers reviewing the BC848BLT3 datasheet, pinout, applications, or equivalent options, key selection considerations include its VCEO = 30 V rating, hFE binning (B-grade), SOT-23 footprint compatibility, thermal derating behavior above 25°C, and AEC-Q101 qualification status for automotive-grade reliability assurance.
Technical Context
This device operates as a standard bipolar junction transistor with fixed NPN polarity, designed for linear amplification and saturated switching. Its DC current gain (hFE) is specified across three bins (A/B/C), with BC848BLT3 corresponding to the B grade (hFE = 200–450 at IC = 2 mA, VCE = 5 V).
It features ESD protection rated >4000 V HBM and >400 V MM, complies with RoHS, Pb-free, and halogen-free requirements, and supports operation from −55°C to +150°C junction temperature. The SOT-23 package enables high-density PCB layouts with standardized pick-and-place compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 30 V - Maximum allowable collector-emitter voltage before breakdown under open-base conditions; defines safe operating voltage headroom in switching applications. |
| IC (continuous) | 100 mA - Maximum DC collector current sustainable without exceeding thermal limits on FR-5 board at 25°C ambient. |
| hFE (B grade) | 200–450 - DC current gain range at IC = 2 mA, VCE = 5 V; determines base drive requirements for saturation or linear biasing. |
| VCE(sat) | ≤ 0.25 V @ IC = 10 mA, IB = 0.5 mA - Low saturation voltage ensures minimal power loss and heat generation when used as a switch. |
| fT | 100 MHz - Transition frequency indicating usable bandwidth for small-signal amplification up to ~10 MHz with stable gain. |
| PD (FR-5) | 225 mW @ TA = 25°C - Total power dissipation limit on standard epoxy-glass PCB; derates by 1.8 mW/°C above ambient. |
| RJA (FR-5) | 556 °C/W - Thermal resistance from junction to ambient; used to calculate junction temperature rise under load. |
Pinout & Package
SOT-23 (TO-236) surface-mount package, 2.90 × 1.30 × 1.00 mm body size, 1.90 mm lead pitch. Standard marking "1K" per onsemi ordering table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Control terminal; requires current-limited drive to bias transistor into active or saturation region. |
| 2 | Emitter | Current return path; typically grounded or connected to low-impedance reference in common-emitter configurations. |
| 3 | Collector | Output terminal; carries amplified/saturated load current; connects to supply rail or load in switching topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Moisture Sensitivity Level | MSL 1 - No floor life limitation; suitable for standard reflow without baking prior to assembly. |
| ESD Robustness | >4000 V HBM / >400 V MM - Enables handling and assembly in non-ESD-controlled environments without special precautions. |
| AEC-Q101 Qualified | Automotive-grade reliability validated - Supports use in engine control modules, body electronics, and infotainment systems requiring extended temperature and lifetime validation. |
| Pb-Free & RoHS Compliant | Meets global environmental regulations - Ensures compliance in EU, China, and other regulated markets without process or material substitution risk. |
| Thermal Performance | RJA = 556 °C/W (FR-5) - Enables predictable thermal modeling for compact designs where heatsinking is impractical. |
Applications
| Low-Voltage Signal Switching | General-Purpose Amplification |
|---|---|
Use Scenario: Controlling LED indicators, relay coils, or logic-level signals in battery-powered IoT sensors and portable devices. IC Role / Device Role / Timing Role: NPN switch operating in saturation mode with IB/IC = 20 ratio to ensure low VCE(sat) and fast turn-off. Use Value: Delivers <0.25 V saturation drop at 10 mA load, minimizing power loss and extending battery life in 3.3 V or 5 V systems. | Use Scenario: Building pre-amplifier stages for audio line-level signals or sensor output conditioning in industrial monitoring equipment. IC Role / Device Role / Timing Role: Linear amplifier biased in common-emitter configuration with emitter degeneration for stable gain and bandwidth. Use Value: Provides fT = 100 MHz and hFE = 200–450, enabling clean amplification of kHz-range signals with low distortion and predictable AC response. |
| Automotive Body Electronics | Power Supply Sequencing |
Use Scenario: Driving window motor control logic, door lock actuators, or HVAC fan speed feedback in passenger vehicles. IC Role / Device Role / Timing Role: Interface transistor translating microcontroller GPIO outputs to higher-current loads while meeting AEC-Q101 stress test requirements. Use Value: Validated for −40°C to +125°C operation and qualified to AEC-Q101, ensuring long-term reliability in under-hood and cabin environments. | Use Scenario: Enabling/disabling auxiliary rails (e.g., 1.8 V, 2.5 V) in multi-rail FPGA or SoC power systems during startup and shutdown sequences. IC Role / Device Role / Timing Role: Low-side enable switch controlling gate/base of downstream MOSFETs or LDOs via microcontroller-controlled base current. Use Value: Offers tight hFE binning (B grade) and low VBE(sat) = 0.7–0.9 V, enabling precise timing control and minimal delay in sequencing networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC848BMTF | Same electrical specs and SOT-23 package; differs only in tape-and-reel packaging (3,000 vs. 10,000 units) and marking ("1K" vs. "1K" with alternate reel code). | No functional difference; identical performance and layout compatibility. | Select BC848BMTF for smaller-volume procurement or legacy BOM alignment where 3k reels are preferred. |
| MMBT3904LT1G | Higher VCEO = 40 V, lower hFE min = 100, same SOT-23 footprint; not AEC-Q101 qualified. | Broader voltage margin but lacks automotive qualification; suitable for commercial-grade applications where cost or availability drives selection. | Choose MMBT3904LT1G when VCEO > 30 V is required and AEC-Q101 is not mandated. |
Compared with BC848BLT3, BC848BMTF offers identical electrical and thermal behavior with minor packaging variation, while MMBT3904LT1G trades automotive qualification and tighter hFE for higher voltage tolerance-making each suitable for distinct reliability or system-level voltage requirements.
Availability
BC848BLT3 is available at Aetrix Electronics and suitable for low-voltage switching, general-purpose amplification, automotive body electronics, and power supply sequencing requiring stable component supply and long-term manufacturability.
Supply support for BC848BLT3 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The BC848BLT3 belongs to the BC846ALT1G Series of general-purpose NPN transistors, engineered for cost-sensitive, high-volume applications demanding consistent gain binning, robust ESD protection, and automotive-grade reliability in miniature SOT-23 packages.
FAQ
What is the maximum collector-emitter voltage rating for BC848BLT3?
The BC848BLT3 has a maximum collector-emitter voltage (VCEO) rating of 30 Vdc under open-base conditions. This value is confirmed in the Maximum Ratings table of the official onsemi datasheet (Rev. 20, June 2024) and defines the upper voltage limit before breakdown occurs. Exceeding this rating risks permanent device damage, especially under transient conditions or elevated temperatures.
Is BC848BLT3 qualified for automotive applications?
Yes, BC848BLT3 is AEC-Q101 qualified and PPAP capable, as explicitly stated in the onsemi datasheet under Features. It meets the stress test requirements for automotive electronics including temperature cycling, humidity testing, and mechanical shock. This qualification applies to the BC848BLT3 variant specifically, supporting its use in body control modules, lighting drivers, and other non-safety-critical automotive subsystems.
What is the hFE range for BC848BLT3 and how is it tested?
The BC848BLT3 is binned to the "B" gain group, with hFE = 200–450 measured at IC = 2.0 mA and VCE = 5.0 V, per the Electrical Characteristics table. This range reflects production lot variation and is verified during final test using standardized DC bias conditions. Designers should use the minimum value (200) for worst-case base drive calculations in switching applications.
Does BC848BLT3 have built-in ESD protection, and what are the ratings?
Yes, BC848BLT3 features integrated ESD protection rated >4000 V per Human Body Model (HBM) and >400 V per Machine Model (MM), as documented in the Features section of the onsemi datasheet. These values indicate robustness against electrostatic discharge during handling and automated assembly, reducing the need for external protection components in most board-level implementations.
What is the thermal resistance (RJA) of BC848BLT3 on a standard FR-5 PCB?
The thermal resistance from junction-to-ambient (RJA) for BC848BLT3 mounted on an FR-5 board is 556 °C/W at TA = 25°C, per the Thermal Characteristics table. This value assumes a 1.0 × 0.75 × 0.062 inch board layout and must be adjusted for actual copper area, layer count, and airflow. Derating is 1.8 mW/°C above 25°C ambient.
BC848BLT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
BC848BLT3 FAQ
1.How can I place an order for BC848BLT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC848BLT3 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 BC848BLT3 reliable?
The price and inventory of BC848BLT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC848BLT3 is usually 5 days.
3.What payment methods are accepted for BC848BLT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC848BLT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC848BLT3?
BC848BLT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC848BLT3 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 BC848BLT3?
For technical support, including BC848BLT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC848BLT3 requirements.
6.How does Aetrix verify that BC848BLT3 is sourced from the original manufacturer or authorized distributors?
All BC848BLT3 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 BC848BLT3 meets industry standards.
7.What is the process for return or replacement of BC848BLT3?
All BC848BLT3 units undergo pre-shipment inspection (PSI). If there is an issue with BC848BLT3, 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 BC848BLT3 part is unused and in its original packaging.
Return procedure for BC848BLT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC848BLT3 Tags
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MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
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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
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MMBT2222A-TP
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MMBTA06LT1G
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