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Nexperia USA Inc. BC846S/DG/B4F
- Part No.:
- BC846S/DG/B4F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC846S/DG/B4F.pdf
- Description:
- TRANS 2NPN 65V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,783
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Product details
Overview
BC846S/DG/B4F from Nexperia is a dual NPN general-purpose transistor in a SOT363-3 (TSSOP6) package, with independent emitter-base-collector terminals for each transistor, VCEO = 65 V, IC = 100 mA per transistor, and hFE = 110 at 2 mA/5 V - used in compact signal switching and amplification stages of portable consumer electronics.
For engineers reviewing the BC846S/DG/B4F datasheet, BC846S/DG/B4F pinout, BC846S/DG/B4F application, or BC846S/DG/B4F equivalent, this page delivers verified pin functions, thermal derating curves, per-transistor DC gain behavior across temperature, saturation voltage under pulsed drive, and real-world board-space-saving use cases in dual-channel logic interface circuits.
Technical Context
The BC846S/DG/B4F integrates two electrically isolated NPN transistors in a single 6-pin TSSOP package, sharing no internal substrate coupling - enabling independent biasing and switching without crosstalk. Each transistor supports VCEO up to 65 V and continuous collector current up to 100 mA at 25 °C ambient.
Thermal performance is defined for FR4 PCB mounting: per-device Ptot = 300 mW at Tamb ≤ 25 °C, with junction-to-ambient Rth(j-a) = 416 K/W per transistor and 568 K/W per device - critical for thermal design in space-constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - maximum safe collector-emitter voltage with base open; defines voltage headroom in low-voltage switching rails. |
| IC | 100 mA - continuous collector current per transistor; sets upper limit for load-driving capability in small-signal stages. |
| hFE | 110 (min) at VCE = 5 V, IC = 2 mA - ensures reliable current amplification in bias networks with minimal base drive. |
| VCE(sat) | 300 mV (max) at IC = 100 mA, IB = 5 mA, pulsed - guarantees low conduction loss in saturated-switch applications. |
| Ptot (per device) | 300 mW - total power dissipation on standard FR4 PCB; determines thermal margin before derating begins above 25 °C. |
| fT | 100 MHz - transition frequency at VCE = 5 V, IC = 10 mA - supports audio-frequency amplification and fast digital switching. |
Pinout & Package
SOT363-3 (TSSOP6) plastic surface-mount package: 1.7 mm × 3.0 mm footprint, 0.65 mm pitch, 1.1 mm max height, designed for reflow soldering with defined solder paste stencil openings (0.5 mm × 0.5 mm pads).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of transistor TR1 - connects to low-side reference or current sink path for first channel. |
| 2 | B1 | Base of transistor TR1 - accepts bias current to control TR1 conduction state independently. |
| 3 | C2 | Collector of transistor TR2 - high-side connection point for second channel's active load or output node. |
| 4 | E2 | Emitter of transistor TR2 - isolated return path for TR2, enabling dual-rail or differential configurations. |
| 5 | B2 | Base of transistor TR2 - fully decoupled control input allowing asynchronous switching of TR2. |
| 6 | C1 | Collector of transistor TR1 - primary output node for TR1, routed separately from TR2's collector (pin 3). |
Key Features
| Feature | Design Value |
|---|---|
| Two independent NPN transistors | Eliminates inter-transistor coupling - enables simultaneous but uncorrelated switching in sensor interface and LED driver pairs. |
| No mutual interference | Electrically isolated die layout prevents signal crosstalk between channels, critical for noise-sensitive analog front-ends. |
| Reduced board space vs discrete pair | Single 3.0 × 1.7 mm footprint replaces two SOT23 devices (total ~6.5 mm²), saving >40% PCB area in dense layouts. |
| Low VCE(sat) at high IC | 300 mV max at 100 mA allows efficient operation in battery-powered 3.3 V logic-level switching without excessive heat buildup. |
Applications
| LED Driver Pair | Logic-Level Signal Switching |
|---|---|
Use Scenario: Dual-color LED control in wearable UI where red/green LEDs require separate on/off timing. IC Role / Device Role / Timing Role: Each transistor acts as an independent current sink switch, driven by MCU GPIOs with no shared substrate path. Use Value: Eliminates need for two separate SOT23 transistors and associated routing - reduces BOM count and improves layout repeatability. |
Use Scenario: Isolating two I²C pull-up lines operating at different voltage domains (e.g., 1.8 V and 3.3 V). IC Role / Device Role / Timing Role: Transistors function as level-shifting switches, with bases driven by master-side logic and collectors tied to respective bus voltages. Use Value: Prevents bus contention during voltage domain transitions due to physical isolation between TR1 and TR2. |
| Sensor Bias Network | Compact Audio Preamp Stage |
Use Scenario: Providing matched bias currents to dual photodiode amplifiers in optical smoke detectors. IC Role / Device Role / Timing Role: Each transistor supplies stable emitter-degenerated bias current to its respective op-amp input stage. Use Value: Tight hFE matching (same die) ensures consistent gain and offset across channels without manual trimming. |
Use Scenario: Low-noise common-emitter preamplifier for MEMS microphone outputs in Bluetooth earbuds. IC Role / Device Role / Timing Role: One transistor amplifies AC-coupled audio signal; second provides active load or DC bias stabilization. Use Value: Shared thermal environment minimizes drift mismatch between gain and bias elements over temperature. |
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 | hFE min = 200 (vs. 110), same VCEO/IC, identical SOT363-3 package and pinout | Higher gain enables lower base drive current - beneficial in ultra-low-power microcontroller GPIO-limited designs | Select when higher DC gain is required without changing layout or thermal design. |
| MBT3904DW1T1G | Same dual NPN topology but in SC-70-6 package (2.0 × 1.25 mm); VCEO = 40 V (lower), IC = 200 mA (higher) | Smaller footprint but reduced voltage rating - suitable only for sub-40 V systems with tighter space constraints | Choose only if board area is more critical than voltage margin and system operates ≤40 V. |
Compared with BC846S/DG/B4F, BC847S offers higher gain without trade-offs in size or voltage rating, while MBT3904DW1T1G trades 25 V of breakdown margin for 30% smaller footprint - making BC846S optimal for 5–24 V general-purpose dual switching where gain stability and voltage headroom are prioritized.
Availability
BC846S/DG/B4F is available at Aetrix Electronics and suitable for LED driver pairs, logic-level signal switching, and sensor bias networks requiring stable component supply, consistent parametric performance across production batches, and long-term industrial lifecycle support.
Supply support for BC846S/DG/B4F 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions optimized for efficiency, miniaturization, and manufacturability.
The BC846S belongs to Nexperia's general-purpose bipolar transistor family, engineered for cost-effective, space-efficient replacement of discrete transistor pairs in consumer, computing, and industrial signal-path applications.
FAQ
What is the marking code for BC846S/DG/B4F?
The top-side marking is "4F%" where "%" denotes a site-specific manufacturing code (e.g., 'A' for Nijmegen, 'B' for Bangkok). This matches Table 4 in the official Nexperia datasheet and is laser-etched on the SOT363-3 package body - not ink-printed - ensuring readability after reflow.
Can BC846S/DG/B4F be used in linear amplifier mode?
Yes - its fT = 100 MHz and hFE stability across IC = 0.1–100 mA (Fig. 3) support Class-A small-signal amplification up to ~10 MHz. However, thermal resistance (Rth(j-a) = 568 K/W per device) limits sustained linear operation above 50 mW per transistor without heatsinking.
Is there crosstalk between the two transistors in BC846S/DG/B4F?
No measurable electrical crosstalk occurs: the datasheet explicitly states "no mutual interference between the transistors" (Section 2), confirmed by independent VCE breakdown testing and thermal imaging showing no shared junction heating - critical for precision dual-channel analog use.
What is the maximum allowable peak collector current for BC846S/DG/B4F?
The absolute maximum peak collector current is 200 mA per transistor (Table 5), specified for single pulses ≤1 ms. This enables short-duration surge handling in relay drivers or capacitive load switching, provided average power remains within the 300 mW per-device derating curve (Fig. 1).
BC846S/DG/B4F 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/DG/B4F FAQ
1.How can I place an order for BC846S/DG/B4F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846S/DG/B4F 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/DG/B4F reliable?
The price and inventory of BC846S/DG/B4F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846S/DG/B4F is usually 5 days.
3.What payment methods are accepted for BC846S/DG/B4F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846S/DG/B4F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846S/DG/B4F?
BC846S/DG/B4F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846S/DG/B4F 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/DG/B4F?
For technical support, including BC846S/DG/B4F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846S/DG/B4F requirements.
6.How does Aetrix verify that BC846S/DG/B4F is sourced from the original manufacturer or authorized distributors?
All BC846S/DG/B4F 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/DG/B4F meets industry standards.
7.What is the process for return or replacement of BC846S/DG/B4F?
All BC846S/DG/B4F units undergo pre-shipment inspection (PSI). If there is an issue with BC846S/DG/B4F, 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/DG/B4F part is unused and in its original packaging.
Return procedure for BC846S/DG/B4F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846S/DG/B4F Tags
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MBT3946DW1T1G
onsemi
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BC846BPDW1T1G
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MBT2222ADW1T1G
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BC847BDW1T1G
onsemi
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DMMT5401-7-F
Diodes Incorporated
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DMMT5551-7-F
Diodes Incorporated
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DMMT3904W-7-F
Diodes Incorporated
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DMMT3906W-7-F
Diodes Incorporated
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FMB3904
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FMB2222A
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ULQ2003D1013TR
STMicroelectronics
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ZXTD4591E6TA
Diodes Incorporated
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