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Nexperia USA Inc. BC846S-QX
- Part No.:
- BC846S-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC846S-QX.pdf
- Description:
- TRANS 2NPN 65V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,120
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Product details
Overview
BC846S-QX from Nexperia is an AEC-Q101-qualified NPN double transistor in SOT363-3 (SC-88) package, integrating two independent general-purpose transistors for space-constrained automotive signal switching and amplification. Each transistor supports 65 V VCEO, 100 mA IC, and minimum hFE of 110 at 2 mA/5 V, with no mutual interference between channels.
For engineers reviewing the BC846S-QX datasheet, BC846S-QX pinout, BC846S-QX application, or BC846S-QX equivalent, this dual-transistor device offers verified automotive-grade reliability, precise thermal derating curves (Rth(j-a) = 568 K/W per transistor), and validated reflow/wave soldering footprints for high-yield PCB assembly.
Technical Context
This dual NPN transistor operates as two electrically isolated gain stages in a single ultra-compact surface-mount package. Each channel exhibits identical DC characteristics: VCEO = 65 V, VCB0 = 80 V, and VEB0 = 6 V, with hFE specified at 110–220 across 2–100 mA collector current.
Thermal performance is defined for FR4 PCB mounting: per-transistor Ptot = 220 mW at Tamb ≤ 25 °C, derating linearly above 25 °C with Rth(j-a) = 568 K/W; per-device total dissipation reaches 300 mW under same conditions.
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 DC collector current per transistor; sets load-driving capability in small-signal stages. |
| hFE | 110 min @ 2 mA/5 V - Minimum DC current gain ensures predictable base drive requirements in amplifier or switch bias networks. |
| VCE(sat) | 300 mV max @ 100 mA/5 mA - Low saturation voltage minimizes power loss and heating in on-state switching operation. |
| Ptot (per transistor) | 220 mW @ Tamb ≤ 25 °C - Thermal limit defining maximum usable power before junction overheating on standard FR4 PCB. |
| AEC-Q101 Qualified | Qualified for automotive use - Confirmed stress-test compliance enables deployment in engine control, body electronics, and ADAS subsystems. |
Pinout & Package
SOT363-3 (TSSOP6) plastic surface-mount package with 0.65 mm lead pitch, 2.2 × 1.35 mm footprint, and exposed pad-less construction. Designed for automated placement and reflow soldering per IPC-7351B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | E1 | Emitter of transistor TR1 - Connected to lowest potential node in TR1's circuit path. |
| 2 | B1 | Base of transistor TR1 - Controls TR1 conduction; requires current-limited drive per hFE ratio. |
| 3 | C2 | Collector of transistor TR2 - High-side connection point for TR2; carries switched load current. |
| 4 | E2 | Emitter of transistor TR2 - Returns TR2 current to reference ground or bias rail. |
| 5 | B2 | Base of transistor TR2 - Independent control input; electrically isolated from B1. |
| 6 | C1 | Collector of transistor TR1 - Primary output node for TR1; shares no internal coupling with C2. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent NPN transistors | No electrical or thermal crosstalk between TR1 and TR2 - Enables separate signal paths without layout isolation overhead. |
| AEC-Q101 qualification | Validated for automotive temperature range (−65 °C to +150 °C) and humidity/stress testing - eliminates need for additional qualification effort. |
| Ultra-small SOT363-3 footprint | 2.2 mm × 1.35 mm area - Reduces board space by ~40% versus two discrete SOT23 devices with equivalent specs. |
| Low VCE(sat) | ≤300 mV @ IC = 100 mA - Limits conduction loss to <30 mW per transistor, easing thermal management in dense layouts. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving LED indicators and relay coils in door module PCBs with limited board area. IC Role / Device Role / Timing Role: Dual NPN switch providing independent low-side drive for status LEDs and 12 V relay coils. Use Value: Single-package solution replaces two discrete transistors, reducing component count and improving AEC-Q101 compliance traceability. |
Use Scenario: Amplifying low-level analog outputs from thermistors and Hall-effect sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Two-stage small-signal amplifier with matched hFE and thermal tracking across −40 °C to +85 °C. Use Value: Identical transistor parameters minimize gain drift between channels, enabling ratiometric sensor readout without calibration. |
| Consumer Appliance Motor Control | Automotive HVAC Blower Interface |
Use Scenario: Controlling bidirectional DC motor direction via H-bridge pre-driver stage in smart home appliances. IC Role / Device Role / Timing Role: Dual NPN pair driving gate resistors of external MOSFETs in half-bridge configuration. Use Value: Matched VCE(sat) and fast turn-on ensures balanced current sharing and prevents shoot-through risk during commutation. |
Use Scenario: Interfacing microcontroller PWM outputs to blower motor speed control circuits in vehicle climate systems. IC Role / Device Role / Timing Role: Level-shifting and current boosting stage converting 3.3 V MCU signals to 12 V motor driver inputs. Use Value: AEC-Q101 rating and 150 °C Tj support continuous operation in under-dash environments with minimal heatsinking. |
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-Q | Higher hFE range (160–450 vs. 110–220); otherwise identical pinout, ratings, and AEC-Q101 qualification. | Better suited for low-base-drive applications like high-gain amplifiers; less optimal where tight hFE matching is required. | Select when higher current gain reduces MCU GPIO loading or enables lower base resistor values. |
| MBT3904DW1T1G | Same SOT-363 package but not AEC-Q101 qualified; hFE min = 100; VCEO = 40 V (lower than BC846S-QX's 65 V). | Limited to non-automotive industrial or consumer use; insufficient voltage headroom for 12 V automotive loads. | Acceptable only for cost-sensitive, non-automotive designs where 40 V VCEO suffices and qualification is waived. |
Compared with BC846S-QX, BC847S-Q provides higher gain for reduced base drive burden, while MBT3904DW1T1G sacrifices automotive qualification and voltage rating for lower unit cost-making BC846S-QX the optimal balance of robustness, performance, and qualification for Tier-1 automotive subsystems.
Availability
BC846S-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer appliance motor control requiring stable component supply and long-term lifecycle assurance.
Supply support for BC846S-QX 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 logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.
The BC846S-QX belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for space-constrained automotive signal switching and amplification where reliability and thermal predictability are critical.
FAQ
What is the maximum allowable junction temperature for BC846S-QX?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in the Limiting Values table. Operation beyond this temperature risks permanent degradation of hFE, leakage current, and beta stability. Derating must follow the per-transistor thermal resistance curve (Rth(j-a) = 568 K/W) on FR4 PCB.
Can BC846S-QX be used in linear amplifier configurations?
Yes-its hFE stability across 2–100 mA and low VCE(sat) support Class-A and Class-AB small-signal amplification. However, its 220 mW per-transistor power limit restricts use to low-power stages; thermal design must ensure Tj remains below 150 °C under worst-case bias conditions.
Is the SOT363-3 package compatible with standard SOT-363 reflow profiles?
Yes-the SOT363-3 outline matches JEDEC MO-178AC and is fully compatible with IPC/JEDEC J-STD-020D reflow profiles. Nexperia provides validated reflow footprints (Fig. 8) and wave soldering guidelines (Fig. 9), confirming compatibility with industry-standard assembly processes.
How does the AEC-Q101 qualification impact BC846S-QX's use in non-automotive applications?
AEC-Q101 qualification ensures enhanced reliability margins-including extended temperature cycling, humidity testing, and ESD robustness-making BC846S-QX suitable for harsh industrial or outdoor environments. It does not restrict use outside automotive; rather, it provides built-in margin for mission-critical non-automotive designs.
BC846S-QX 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:
- 200mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BC846S-QX FAQ
1.How can I place an order for BC846S-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846S-QX 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-QX reliable?
The price and inventory of BC846S-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846S-QX is usually 5 days.
3.What payment methods are accepted for BC846S-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846S-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846S-QX?
BC846S-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846S-QX 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-QX?
For technical support, including BC846S-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846S-QX requirements.
6.How does Aetrix verify that BC846S-QX is sourced from the original manufacturer or authorized distributors?
All BC846S-QX 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-QX meets industry standards.
7.What is the process for return or replacement of BC846S-QX?
All BC846S-QX units undergo pre-shipment inspection (PSI). If there is an issue with BC846S-QX, 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-QX part is unused and in its original packaging.
Return procedure for BC846S-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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