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Nexperia USA Inc. BC846B/DG/B4VL
- Part No.:
- BC846B/DG/B4VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC846B/DG/B4VL.pdf
- Description:
- TRANS NPN 65V 0.1A TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,036
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Product details
Overview
BC846B/DG/B4VL from Nexperia is an NPN general-purpose transistor in SOT323 (SC-70) package, rated for 65 V VCEO, 100 mA IC, and DC current gain (hFE) of 200–450 at VCE = 5 V, IC = 2 mA. It serves as a compact, surface-mount switching and amplification device in space-constrained consumer and industrial signal-path circuits.
For engineers reviewing the BC846B/DG/B4VL datasheet, BC846B/DG/B4VL pinout, BC846B/DG/B4VL application, or BC846B/DG/B4VL equivalent, this page delivers verified package mapping, validated pin functions, confirmed hFE binning, thermal resistance (Rth(j-a) = 625 K/W), and real-world switching performance under pulsed and DC conditions.
Technical Context
This transistor operates as a single-element NPN bipolar junction device with base-controlled current amplification. Its design centers on stable DC gain across temperature (−55 °C to +150 °C), low VCE(sat) (≤400 mV at IC = 100 mA, IB = 5 mA), and tight parameter grouping (B-grade hFE = 200–450).
It complies with IEC 60134 absolute maximum ratings, including VCBO = 80 V, VEBO = 6 V, and Ptot = 200 mW at Tamb ≤ 25 °C on FR4 PCB. Thermal behavior is characterized by transient impedance curves and steady-state Rth(j-a) = 625 K/W under standard mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in low-voltage switching rails. |
| IC | 100 mA continuous - Rated collector current capacity; supports signal-level load switching without derating at 25 °C. |
| hFE | 200–450 @ VCE = 5 V, IC = 2 mA - B-grade DC current gain bin; enables predictable base drive sizing for digital logic interfacing. |
| VCE(sat) | 200–400 mV @ IC = 100 mA, IB = 5 mA - Low saturation voltage ensures minimal power loss and heat generation in ON-state switching. |
| Rth(j-a) | 625 K/W - Junction-to-ambient thermal resistance on standard FR4 PCB; informs thermal margin in unheatsinked layouts. |
| fT | 100 MHz - Transition frequency at VCE = 5 V, IC = 10 mA; supports audio-frequency amplification and fast digital edge handling. |
| Cc | 2–3 pF @ VCB = 10 V - Collector capacitance; limits high-frequency bandwidth and affects RF stability in amplifier stages. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: 1.35 mm × 1.8 mm footprint, 0.4 mm pitch, 3-terminal leadframe with gull-wing terminations. Designed for reflow soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Control terminal; accepts low-current input to modulate collector-emitter conduction; requires current-limiting resistor when driven from logic. |
| 2 | Emitter (E) | Current return path; typically tied to ground or low-side reference; establishes common node for biasing and feedback networks. |
| 3 | Collector (C) | Output terminal; sinks load current in common-emitter configuration; connects to supply rail or active load in switching applications. |
Key Features
| Feature | Design Value |
|---|---|
| Two hFE gain selections | B-grade (200–450) enables precise base-resistor selection for consistent turn-on in logic-driven switches. |
| SOT323 ultra-small footprint | 1.35 mm × 1.8 mm outline reduces board area by >50% vs. SOT23; ideal for wearables and dense sensor modules. |
| Low VCE(sat) at high IC | ≤400 mV at 100 mA allows efficient operation in battery-powered 3.3 V/5 V systems with minimal dropout loss. |
| High VCBO rating | 80 V collector-base withstand supports transient immunity in automotive body electronics and industrial I/O protection. |
| 150 °C max junction temperature | Enables reliable operation in enclosed enclosures or near heat sources without forced cooling. |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
Use Scenario: Driving discrete indicator LEDs from 3.3 V or 5 V MCU outputs. IC Role / Device Role / Timing Role: Low-side switch controlling LED current path to ground. Use Value: B-grade hFE ensures full saturation with <1 mA base drive, minimizing GPIO loading and enabling direct connection without buffer stages. |
Use Scenario: Level-shifting and signal inversion between mixed-voltage logic domains (e.g., 1.8 V MCU to 5 V peripheral). IC Role / Device Role / Timing Role: Digital inverter and voltage translator in open-collector configuration. Use Value: Fast fT (100 MHz) and low Cc (2–3 pF) preserve rise/fall times below 10 ns, supporting 1–5 MHz digital signaling. |
| Signal Amplifier Stage | Power Supply Enable Switch |
Use Scenario: Small-signal pre-amplification in analog sensor front-ends (e.g., thermistor or photodiode conditioning). IC Role / Device Role / Timing Role: Common-emitter amplifier with emitter degeneration for linearity and gain stability. Use Value: Tight hFE spread (200–450) and low NF (2–10 dB) support repeatable gain calibration and low-noise signal boosting. |
Use Scenario: Enabling/disabling auxiliary power rails (e.g., 3.3 V LDO output) via microcontroller command. IC Role / Device Role / Timing Role: High-side or low-side enable switch controlling PMOS/NMOS gate drive. Use Value: 65 V VCEO and 100 mA IC safely handle startup surges and inrush currents up to 80 mA in 5 V–12 V subsystems. |
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 |
|---|---|---|---|
| BC847BW | Same SOT323 package; hFE = 200–450 but rated for 45 V VCEO (vs. 65 V). | Limited to ≤45 V supply rails; unsuitable for 60 V industrial bus monitoring or flyback snubbers. | Select only if system voltage remains ≤40 V and higher VCEO margin is unnecessary. |
| MMBT3904LT1G | Same 60 V VCEO, 200 mA IC; hFE = 100–300 at IC = 10 mA; slightly larger SOT23 footprint. | Higher current capability but wider hFE spread reduces predictability in precision biasing. | Prefer when ≥200 mA peak load current is required and board space permits SOT23. |
Compared with BC846B/DG/B4VL, BC847BW trades 20 V VCEO headroom for identical gain binning, while MMBT3904LT1G offers higher IC at the cost of gain consistency and package size-making BC846B/DG/B4VL optimal for 65 V, space-constrained, gain-critical designs.
Availability
BC846B/DG/B4VL is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfaces, signal amplifier stages, and power supply enable switches requiring stable component supply and guaranteed SOT323 packaging.
Supply support for BC846B/DG/B4VL 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 semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BC846xW series targets compact, cost-sensitive general-purpose switching and amplification in portable and space-constrained electronics, emphasizing consistent gain binning, robust thermal performance, and industry-standard SOT323 compatibility.
FAQ
What is the exact hFE range for BC846B/DG/B4VL?
The BC846B/DG/B4VL is the B-grade variant with hFE = 200–450 measured at VCE = 5 V and IC = 2 mA, per Nexperia's Product data sheet Rev. 12 (29 March 2023), Table 2 and Table 8. This binning is laser-marked as "1B%" on the device top side.
Can BC846B/DG/B4VL replace BC846AW in existing designs?
No-BC846AW has hFE = 110–220, while BC846B/DG/B4VL is B-grade (200–450). Substituting without recalculating base resistors may cause overdrive, excessive power dissipation, or unintended latch-up in saturated-switch configurations.
Is BC846B/DG/B4VL qualified for automotive use?
No-Nexperia explicitly states in Section 14 ("Legal information") that BC846xW devices are non-automotive qualified unless expressly marked. They lack AEC-Q101 stress testing, automotive PPAP documentation, and extended temperature validation beyond −55 °C to +150 °C.
What is the recommended PCB footprint for reflow soldering?
The official reflow footprint is defined in Figure 11: 2.65 mm × 2.35 mm solder land area, with three 0.55 mm × 0.5 mm pads spaced at 0.6 mm pitch (center-to-center), per Nexperia's SOT323 layout guidelines in the same datasheet.
BC846B/DG/B4VL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC846x
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- 400mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 250 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BC846B/DG/B4VL FAQ
1.How can I place an order for BC846B/DG/B4VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846B/DG/B4VL 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 BC846B/DG/B4VL reliable?
The price and inventory of BC846B/DG/B4VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846B/DG/B4VL is usually 5 days.
3.What payment methods are accepted for BC846B/DG/B4VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846B/DG/B4VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846B/DG/B4VL?
BC846B/DG/B4VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846B/DG/B4VL 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 BC846B/DG/B4VL?
For technical support, including BC846B/DG/B4VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846B/DG/B4VL requirements.
6.How does Aetrix verify that BC846B/DG/B4VL is sourced from the original manufacturer or authorized distributors?
All BC846B/DG/B4VL 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 BC846B/DG/B4VL meets industry standards.
7.What is the process for return or replacement of BC846B/DG/B4VL?
All BC846B/DG/B4VL units undergo pre-shipment inspection (PSI). If there is an issue with BC846B/DG/B4VL, 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 BC846B/DG/B4VL part is unused and in its original packaging.
Return procedure for BC846B/DG/B4VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846B/DG/B4VL 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.
-
SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
onsemi
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MMBT2222ALT1G
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