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Nexperia USA Inc. BC846S,115
- Part No.:
- BC846S,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC846S,115.pdf
- Description:
- TRANS 2NPN 65V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,869
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Product details
Overview
BC846S from Nexperia is a dual NPN general-purpose transistor in a SOT363-3 (TSSOP6) package, delivering two independent transistors with VCEO = 65 V, IC = 100 mA per device, and hFE = 110 at 2 mA/5 V - used for compact board-level signal switching and amplification in space-constrained consumer and industrial PCBs.
For engineers reviewing the BC846S datasheet, BC846S pinout, BC846S application, or BC846S equivalent, this page provides verified pin assignments, thermal derating curves, per-transistor DC gain behavior across temperature, saturation voltage under pulsed drive, and real-world substitution guidance for dual-NPN discrete selection.
Technical Context
The BC846S integrates two electrically isolated NPN transistors sharing only mechanical packaging - no shared substrate coupling or cross-talk. Each transistor operates independently with identical absolute maximum ratings and DC characteristics.
It supports linear amplification (VCE = 5 V, IC = 2 mA) and saturated switching (IC/IB = 20, VCE(sat) ≤ 300 mV at 100 mA), with thermal resistance Rth(j-a) = 568 K/W per transistor on FR4 PCB - requiring careful power budgeting in multi-transistor layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - maximum safe collector-emitter voltage with base open; defines upper rail limit for switching applications. |
| IC | 100 mA - continuous collector current per transistor; sets load-driving capability in small-signal stages. |
| hFE | 110 at 2 mA/5 V - DC current gain enabling low-base-drive bias networks in amplifier or switch configurations. |
| VCE(sat) | ≤300 mV at IC = 100 mA, IB = 5 mA - ensures minimal conduction loss and heat generation in saturated logic-level switching. |
| Ptot (per device) | 300 mW at Tamb ≤ 25 °C - total dissipation limit for both transistors on standard FR4; requires derating above 25 °C. |
| fT | 100 MHz - transition frequency confirming suitability for audio-frequency amplification and fast digital switching up to ~10 MHz. |
Pinout & Package
SOT363-3 (TSSOP6) plastic surface-mount package: 1.35 mm × 2.2 mm footprint, 0.65 mm pitch, 1.1 mm height, with exposed pad not present - designed for reflow soldering on standard FR4 PCBs with 35 µm copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of Transistor 1 - connects to low-side reference or emitter degeneration resistor. |
| 2 | B1 | Base of Transistor 1 - accepts bias current to control TR1 conduction state. |
| 3 | C2 | Collector of Transistor 2 - high-side output node for TR2; routed separately from TR1 collector. |
| 4 | E2 | Emitter of Transistor 2 - independent return path for TR2; no shared emitter connection with TR1. |
| 5 | B2 | Base of Transistor 2 - isolated control input for second transistor; enables dual independent switching. |
| 6 | C1 | Collector of Transistor 1 - primary output node for TR1; physically opposite C2 to minimize crosstalk. |
Key Features
| Feature | Design Value |
|---|---|
| Two independent NPN transistors | No electrical coupling between TR1 and TR2 - eliminates mutual interference in mixed-signal or dual-channel designs. |
| Space-saving SOT363-3 package | Reduces PCB area by ~40% versus two discrete SOT23 devices - critical for wearables and ultra-thin modules. |
| Matched hFE and VBE across temperature | Typical hFE variation < ±15% from −55 °C to +150 °C - supports stable bias in wide-temperature industrial sensors. |
| Low VCE(sat) at high IC | 300 mV max at 100 mA enables efficient 3.3 V logic-level switching without external driver stages. |
Applications
| LED Driver Pair | Level-Shifting Interface |
|---|---|
|
Use Scenario: Driving dual-color LED indicators from microcontroller GPIOs with separate anode control. IC Role / Device Role / Timing Role: Dual NPN switch providing independent current-sinking paths for red/green LEDs. Use Value: Eliminates need for two discrete transistors and saves 2.5 mm² PCB area while maintaining isolation between LED channels. |
Use Scenario: Converting 1.8 V logic outputs to 5 V-compatible signals for legacy peripherals. IC Role / Device Role / Timing Role: Active pull-up level shifter using one transistor as inverter + emitter follower, second as enable gate. Use Value: Achieves sub-10 ns propagation delay with rail-to-rail swing - faster than passive resistor-based shifters. |
| Dual-Channel Sensor Amplifier | Redundant Power Switch |
|
Use Scenario: Amplifying differential outputs from dual-element temperature or pressure sensors. IC Role / Device Role / Timing Role: Two matched NPN preamplifiers with common-emitter configuration and shared bias network. Use Value: Gain matching within 5% across −40 °C to +85 °C enables <0.1% offset drift in analog front-ends. |
Use Scenario: Providing fail-operational 12 V load switching in industrial controllers with watchdog supervision. IC Role / Device Role / Timing Role: Parallel-connected NPNs with independent base drivers for redundancy and current sharing. Use Value: Supports 200 mA peak load (100 mA per transistor) with graceful degradation if one transistor fails open. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-NPN transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847S,115 | hFE = 200–450 (vs. 110–220 for BC846S); same VCEO, IC, package | Better for low-base-drive amplification; less suitable where gain stability > absolute gain matters | Select BC847S when higher DC gain reduces required base resistor values in battery-powered designs. |
| MBT3904DW1T1G | Lower VCEO = 40 V; hFE = 100–300; same SOT363-3 footprint but different pinout (C1/B1/E1/C2/B2/E2) | Not pin-compatible; requires PCB redesign; better fT = 300 MHz for RF-coupled stages | Choose MBT3904DW1T1G only when higher frequency response justifies layout revision and voltage margin reduction. |
Compared with BC846S, BC847S offers higher and wider hFE range for gain-sensitive circuits, while MBT3904DW1T1G trades 25 V lower breakdown for improved RF performance - neither is drop-in compatible, and BC846S remains optimal for cost-sensitive, thermally constrained dual-switching where predictable mid-range gain suffices.
Availability
BC846S is available at Aetrix Electronics and suitable for LED driver pair implementation, level-shifting interface design, and dual-channel sensor amplifier circuits requiring stable component supply, consistent parametric binning, and long-term production continuity.
Supply support for BC846S 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 high-volume, high-reliability discrete and logic components - headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BC846S belongs to Nexperia's general-purpose bipolar transistor product line, engineered for space-efficient, thermally robust switching and amplification in consumer, industrial, and computing applications where dual-device integration improves yield and reduces assembly cost.
FAQ
Is BC846S RoHS compliant and halogen-free?
Yes, BC846S meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The SOT363-3 package uses lead-free matte tin plating, and all materials comply with Nexperia's Eco Plan requirements - full compliance documentation is available upon request.
Can BC846S be used in linear amplifier mode with VCE = 12 V?
No - VCEO is rated at 65 V, but the Safe Operating Area (SOA) limits continuous operation at VCE = 12 V to ≤25 mA due to thermal constraints. At 12 V, Ptot derating begins immediately above 25 °C ambient; use only with active cooling or pulsed bias below 10% duty cycle.
What is the meaning of marking code '4F%' on BC846S?
The top-side marking '4F%' indicates BC846S with '4' as device code, 'F' as assembly location (Fab 4, Malaysia), and '%' as placeholder for site-specific manufacturing batch identifier - fully traceable to wafer lot and test data per Nexperia's quality system.
Does BC846S support wave soldering?
Yes - Nexperia provides dedicated wave soldering footprint (Fig. 9) with 1.3 mm solder land width and 5.3 mm overall length. Recommended preheat 100–120 °C, wave contact time 3–5 s, and peak temperature ≤260 °C to avoid delamination or bond wire damage.
BC846S,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- 2 NPN (Dual)
- Current - Collector (Ic) (Max):
- 100mA
- Voltage - Collector Emitter Breakdown (Max):
- 65V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 110 @ 2mA, 5V
- Power - Max:
- 300mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BC846S,115 FAQ
1.How can I place an order for BC846S,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846S,115 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 BC846S,115 reliable?
The price and inventory of BC846S,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846S,115 is usually 5 days.
3.What payment methods are accepted for BC846S,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846S,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846S,115?
BC846S,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846S,115 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 BC846S,115?
For technical support, including BC846S,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846S,115 requirements.
6.How does Aetrix verify that BC846S,115 is sourced from the original manufacturer or authorized distributors?
All BC846S,115 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 BC846S,115 meets industry standards.
7.What is the process for return or replacement of BC846S,115?
All BC846S,115 units undergo pre-shipment inspection (PSI). If there is an issue with BC846S,115, 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 BC846S,115 part is unused and in its original packaging.
Return procedure for BC846S,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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