My Inquiry
My Account
Diodes Incorporated BC846BLP4-7B
- Part No.:
- BC846BLP4-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- 3-XFDFN
- Datasheet:
-
BC846BLP4-7B.pdf
- Description:
- TRANS NPN 65V 0.1A X2-DFN1006-3
- Quantity:
- Payment:
- Shipping:
Inventory:47,140
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC846BLP4-7B from Diodes Incorporated is a 65 V, 100 mA NPN small-signal transistor in an ultra-small X2-DFN1006-3 leadless package, featuring low VCE(SAT) (90 mV typ. at IC = 10 mA), hFE of 200–450, and AEC-Q101 qualification for automotive-grade reliability. It serves as a general-purpose switching and amplification device in space-constrained PCBs.
For engineers reviewing the BC846BLP4-7B datasheet, BC846BLP4-7B pinout, BC846BLP4-7B application, or BC846BLP4-7B equivalent, key selection criteria include its 272 °C/W RθJA on FR-4, 100 MHz fT, 4 kV HBM ESD rating, and NiPdAu terminal finish for robust solderability in high-volume SMT assembly.
Technical Context
This NPN bipolar junction transistor operates with a maximum VCEO of 65 V and continuous IC of 100 mA, supporting linear amplification and digital switching up to 100 MHz. Its low saturation voltage enables efficient low-power switching in battery-operated and automotive signal conditioning circuits.
The X2-DFN1006-3 package integrates the collector pad as the thermal path, delivering 110 °C/W RθJL when soldered to copper heatsink areas. JEDEC Level 1 moisture sensitivity and AEC-Q101 qualification confirm suitability for reflow-compatible automotive and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum safe collector-emitter voltage before breakdown under open-base conditions. |
| IC (cont.) | 100 mA - Continuous DC collector current rating defining steady-state switching capacity. |
| hFE | 200–450 - DC current gain range at VCE = 5 V, IC = 2 mA, enabling predictable base drive sizing. |
| VCE(SAT) | 90–600 mV - Saturation voltage across C–E at IC/IB = 20, directly impacting conduction loss in switch mode. |
| fT | 100–300 MHz - Transition frequency indicating usable bandwidth for RF amplification or fast switching. |
| RθJA | 272 °C/W - Junction-to-ambient thermal resistance on standard FR-4, defining power derating vs. ambient temperature. |
| ESD HBM | 4000 V - Human Body Model withstand level, supporting handling robustness in automated SMT lines. |
Pinout & Package
Package: X2-DFN1006-3 - 1.0 mm × 0.6 mm, 0.4 mm height, leadless DFN with exposed collector pad for thermal management and mechanical anchoring.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (Pad) | Main current output node and thermal interface | Exposed metal pad functions as both high-current path and primary heat sink attachment point. |
| Emitter | Current return path, grounded reference in common-emitter config | Terminal tied to circuit ground or low-side reference; defines emitter-follower output impedance. |
| Base | Control input for current amplification/switching | Low-impedance gate-like input requiring precise IB calculation (e.g., 5 mA for 100 mA IC). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | X2-DFN1006-3 (1.0 × 0.6 mm) reduces board area by >60% vs. SOT-23, critical for wearables and sensor nodes. |
| AEC-Q101 qualified | Validated for automotive applications including body control modules and lighting drivers per stress test requirements. |
| NiPdAu terminal finish | Enables reliable solder wetting and intermetallic formation on OSP- or ENIG-finished PCBs without lead-free reflow defects. |
| Green compound (halogen/antimony-free) | Meets IPC-4101D/21 and EU ELV directives with <900 ppm Br, <900 ppm Cl, <1000 ppm Sb. |
Applications
| Automotive LED Driver | Portable Sensor Signal Amplifier |
|---|---|
Use Scenario: Driving 12 V automotive LEDs in interior lighting with PWM dimming. IC Role / Device Role / Timing Role: Low-side NPN switch controlling LED current path to ground. Use Value: 90 mV VCE(SAT) minimizes power loss and self-heating at 100 mA, extending LED lifetime and simplifying thermal design. | Use Scenario: Amplifying microvolt-level analog outputs from MEMS accelerometers in IoT edge devices. IC Role / Device Role / Timing Role: Common-emitter preamplifier stage with stable hFE and low noise figure (2 dB typ.). Use Value: 100 MHz fT and 2 dB NF support clean amplification of 10–100 kHz sensor signals without added distortion. |
| USB-C Power Path Switch | Industrial PLC Input Conditioning |
Use Scenario: Enabling/disabling 5 V USB-C VBUS supply using logic-level control. IC Role / Device Role / Timing Role: Digital switch interfacing MCU GPIO to high-side load switch driver. Use Value: Fast switching (tr = 59.7 ns, tf = 108.6 ns) ensures clean 100 kHz enable/disable transitions with minimal shoot-through risk. | Use Scenario: Converting 24 V industrial field signals to 3.3 V logic levels for microcontroller inputs. IC Role / Device Role / Timing Role: Level-shifting interface with built-in current limiting and ESD protection. Use Value: 4 kV HBM ESD rating and 65 V VCEO tolerate transient surges on factory floor wiring without external clamps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC846B,215 (Nexperia) | SOT-23 package (3.0 × 1.4 mm), higher RθJA (375 °C/W), same hFE and VCEO. | Larger footprint; less suitable for ultra-dense layouts but easier manual rework. | Select when board real estate is not constrained and hand-soldering or legacy footprint compatibility is required. |
| MMBT3904LT1G (ON Semiconductor) | Same X1-DFN1006-3 package, lower hFE (100–300), higher VCE(SAT) (300 mV max at IC=10mA). | Lower gain and higher saturation loss reduce efficiency in precision current-switching roles. | Choose only where cost is prioritized over gain stability and conduction loss in non-critical loads. |
Compared with BC846B,215 and MMBT3904LT1G, the BC846BLP4-7B delivers superior thermal performance (272 °C/W), tighter hFE distribution, and lower VCE(SAT), making it optimal for automotive and miniaturized industrial designs demanding reliability and efficiency.
Availability
BC846BLP4-7B is available at Aetrix Electronics and suitable for automotive LED drivers, portable sensor interfaces, USB-C power path control, and industrial PLC input conditioning requiring stable component supply and AEC-Q101 compliance.
Supply support for BC846BLP4-7B 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The BC846BLP4 belongs to Diodes' AEC-Q101-qualified small-signal transistor product line, engineered for high-reliability automotive and industrial applications where miniaturization, thermal efficiency, and process consistency are critical.
FAQ
What is the maximum operating temperature for BC846BLP4-7B?
The BC846BLP4-7B has a specified operating junction temperature range of –55 °C to +150 °C. Its thermal resistance (RθJA = 272 °C/W on FR-4) means that at 100 mA IC and 90 mV VCE(SAT), power dissipation is ~9 mW, resulting in negligible junction rise-enabling full-range operation even in sealed automotive enclosures.
Is BC846BLP4-7B compatible with lead-free reflow profiles?
Yes. The device uses NiPdAu-plated terminals and a halogen-free molding compound, fully compliant with J-STD-020 Level 1 moisture sensitivity and IPC/JEDEC standard lead-free reflow profiles (peak 260 °C). Its 0.0009 g mass ensures uniform heating and eliminates tombstoning risk.
How does the X2-DFN1006-3 package affect PCB layout?
The X2-DFN1006-3 requires a specific 0.70 mm × 0.25 mm solder pad for the collector, with 0.40 mm spacing between emitter and base pads. Diodes' recommended layout (G1 = 0.30 mm, G2 = 0.20 mm) ensures optimal thermal transfer and solder joint reliability-deviations may increase RθJA by >20%.
Can BC846BLP4-7B replace BC847BLP4-7B in existing designs?
No. Although both share the same package and pinout, BC847BLP4-7B has VCEO = 45 V and hFE = 200–450 at IC = 10 mA-not 2 mA. Substituting risks overvoltage failure in 65 V circuits and gain mismatch in bias-sensitive amplifier stages.
BC846BLP4-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-XFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 65 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 410 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1006-3
BC846BLP4-7B FAQ
1.How can I place an order for BC846BLP4-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846BLP4-7B 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 BC846BLP4-7B reliable?
The price and inventory of BC846BLP4-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BLP4-7B is usually 5 days.
3.What payment methods are accepted for BC846BLP4-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BLP4-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846BLP4-7B?
BC846BLP4-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846BLP4-7B 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 BC846BLP4-7B?
For technical support, including BC846BLP4-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BLP4-7B requirements.
6.How does Aetrix verify that BC846BLP4-7B is sourced from the original manufacturer or authorized distributors?
All BC846BLP4-7B 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 BC846BLP4-7B meets industry standards.
7.What is the process for return or replacement of BC846BLP4-7B?
All BC846BLP4-7B units undergo pre-shipment inspection (PSI). If there is an issue with BC846BLP4-7B, 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 BC846BLP4-7B part is unused and in its original packaging.
Return procedure for BC846BLP4-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846BLP4-7B Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
