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Nexperia USA Inc. BC846S-QH
- Part No.:
- BC846S-QH
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC846S-QH.pdf
- Description:
- TRANS 2NPN 65V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,208
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Product details
Overview
BC846S-QH 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 delivers hFE ≥ 110 at 2 mA/5 V, with no mutual interference between channels.
For engineers reviewing the BC846S-QH datasheet, BC846S-QH pinout, BC846S-QH application, or BC846S-QH equivalent, this dual-transistor device offers verified automotive-grade reliability, thermal derating curves for FR4 PCBs, and precise per-transistor limiting values including 80 V VCBO, 6 V VEBO, and 220 mW per-transistor Ptot at 25 °C ambient.
Technical Context
This dual NPN transistor operates as two electrically isolated small-signal devices sharing a single SOT363-3 footprint. Each channel exhibits matched DC gain (hFE = 110–100 across 2–10 mA), low saturation voltages (VCEsat ≤ 300 mV at 100 mA/5 mA), and stable breakdown ratings (VCEO = 65 V, VCBO = 80 V).
Thermal performance is defined for both per-transistor (Rth(j-a) = 568 K/W) and per-device (Rth(j-a) = 416 K/W) operation on standard FR4 PCBs. Transient thermal impedance data supports pulse-width and duty-cycle design validation up to 1 ms pulses.
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 maximum linear amplification or switching load capability. |
| hFE | 110 min at 2 mA/5 V - Minimum DC current gain ensures predictable base drive requirements in bias networks. |
| VCEsat | ≤300 mV at 100 mA/5 mA - Low saturation voltage minimizes power loss and heating in saturated-switching configurations. |
| Ptot (per transistor) | 220 mW at Tamb ≤ 25 °C - Thermal limit for single-transistor operation on standard FR4 PCB; requires derating above 25 °C. |
| fT | 100 MHz - Transition frequency confirms suitability for RF-coupled pre-amplifiers and high-speed digital switching up to ~10 MHz. |
Pinout & Package
SOT363-3 (SC-88/TSSOP6) plastic surface-mount package with 6 leads, 1.3 mm × 2.2 mm body size, 0.65 mm pitch, and exposed pad not present. Designed for reflow and wave soldering per IPC-7351B standards.
| 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 - controls TR1 conduction; requires current-limited drive per hFE and VBE (580–700 mV). |
| 3 | C2 | Collector of transistor TR2 - high-side output node for second channel; rated for 65 V and 100 mA. |
| 4 | E2 | Emitter of transistor TR2 - independent low-side terminal; electrically isolated from E1. |
| 5 | B2 | Base of transistor TR2 - fully decoupled control input; enables independent biasing of second channel. |
| 6 | C1 | Collector of transistor TR1 - primary high-side switching node; shares same voltage and current limits as C2. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications per stress test requirements for discrete semiconductors. |
| Independent transistor channels | No electrical coupling between TR1 and TR2 - eliminates crosstalk in dual-signal paths such as push-pull drivers or differential receivers. |
| Space-saving dual integration | Replaces two discrete SOT23 transistors, reducing PCB area by ~40% and assembly cost via single placement and reflow step. |
| Low VBE variation | 580–700 mV at 2 mA/5 V - tight base-emitter voltage tolerance simplifies bias network design and improves channel matching. |
Applications
| Automotive Door Module Switching | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving window lift motor relays and LED status indicators in door control units. IC Role / Device Role / Timing Role: Dual NPN switch providing isolated low-side drive for relay coils and indicator LEDs. Use Value: Eliminates need for two separate transistors while maintaining AEC-Q101 compliance and thermal margin on compact PCBs. |
Use Scenario: Amplifying low-level analog outputs from temperature and pressure sensors before ADC sampling. IC Role / Device Role / Timing Role: Small-signal common-emitter amplifier stage with matched gain and low noise floor. Use Value: hFE ≥ 110 and fT = 100 MHz support stable 10 kHz bandwidth amplification without external compensation. |
| Consumer Appliance Motor Control | Medical Diagnostic Equipment Interface |
Use Scenario: Controlling brushless fan motors and solenoid valves in HVAC and washing machine control boards. IC Role / Device Role / Timing Role: High-reliability switching element in gate driver auxiliary circuits and feedback isolation stages. Use Value: 200 mA peak collector current and 300 mV VCEsat ensure efficient switching with minimal heat generation during burst-mode operation. |
Use Scenario: Level-shifting and buffering analog sensor signals in portable ECG and pulse oximeter front-ends. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with low input offset and negligible crosstalk between dual channels. Use Value: Independent emitter terminals (E1/E2) enable true differential input configuration without shared reference contamination. |
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 (200–450 vs. 110–100); identical package, pinout, and voltage/current ratings. | Better suited for low-base-drive applications (e.g., microcontroller GPIO direct drive); less ideal where gain stability >200 is undesirable. | Select when higher DC gain reduces required base current without compromising thermal margin. |
| MBT3904DW1T1G | Same SOT363 package but lower VCEO (40 V), higher max IC (200 mA), and no AEC-Q101 qualification. | Acceptable for non-automotive industrial use; unsuitable for 12 V/24 V automotive systems requiring 65 V breakdown margin. | Choose only for cost-sensitive, non-automotive designs where 40 V rating suffices and qualification is not required. |
Compared with BC846S-QH, BC847S-Q provides higher gain for reduced drive overhead, while MBT3904DW1T1G trades automotive qualification and voltage headroom for higher current capacity-making BC846S-QH optimal for AEC-Q101-compliant dual-channel switching where 65 V and 100 mA per channel are essential.
Availability
BC846S-QH is available at Aetrix Electronics and suitable for automotive door modules, industrial sensor interfaces, consumer appliance motor control, and medical diagnostic equipment requiring stable component supply and long-term lifecycle assurance.
Supply support for BC846S-QH 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 logic, discrete, and MOSFET components, with leadership in automotive-qualified parts and energy-efficient solutions.
The BC846S-QH belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for space-constrained automotive signal routing, switching, and amplification where dual-channel integration and thermal robustness are critical.
FAQ
Is BC846S-QH pin-compatible with BC846BS?
No. BC846S-QH uses SOT363-3 (6-pin) packaging with interleaved pinning (E1-B1-C2-E2-B2-C1), whereas BC846BS is a single-transistor SOT23 device with 3 pins. The pin count, layout, and channel count differ fundamentally-no mechanical or electrical compatibility exists.
What is the maximum allowable junction temperature for continuous operation?
The absolute maximum junction temperature (Tj) is 150 °C per transistor. Continuous operation must remain within this limit, enforced via thermal derating: Ptot decreases linearly above 25 °C ambient, reaching zero at ~135 °C ambient on FR4 PCB per Figure 1.
Does BC846S-QH support pulsed operation beyond its DC current rating?
Yes. Peak collector current (ICM) is rated at 200 mA for single pulses ≤ 1 ms. This allows short-duration surge handling-such as relay coil kickback suppression-provided average power remains within the 220 mW per-transistor derated limit.
How does the absence of a thermal pad affect PCB thermal design?
The SOT363-3 package has no exposed thermal pad. Heat dissipation relies entirely on lead-frame conduction through solder joints to copper traces. Designers must use ≥ 35 µm copper, minimize trace length to thermal vias, and follow Nexperia's recommended footprint (Figure 8) to achieve specified Rth(j-a) = 568 K/W per transistor.
BC846S-QH 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-QH FAQ
1.How can I place an order for BC846S-QH through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846S-QH 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-QH reliable?
The price and inventory of BC846S-QH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846S-QH is usually 5 days.
3.What payment methods are accepted for BC846S-QH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846S-QH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846S-QH?
BC846S-QH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846S-QH 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-QH?
For technical support, including BC846S-QH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846S-QH requirements.
6.How does Aetrix verify that BC846S-QH is sourced from the original manufacturer or authorized distributors?
All BC846S-QH 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-QH meets industry standards.
7.What is the process for return or replacement of BC846S-QH?
All BC846S-QH units undergo pre-shipment inspection (PSI). If there is an issue with BC846S-QH, 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-QH part is unused and in its original packaging.
Return procedure for BC846S-QH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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