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Nexperia USA Inc. BC846BS-QX
- Part No.:
- BC846BS-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC846BS-QX.pdf
- Description:
- TRANS 2NPN 65V 100MA 6-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,192
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Product details
Overview
BC846BS-QX from Nexperia is a dual NPN general-purpose transistor pair in SOT363-3 (TSSOP6) package, rated for 65 V VCEO, 100 mA IC, and qualified to AEC-Q101 for automotive use. It delivers matched hFE (200–450), low VCE(sat) (200 mV @ 100 mA/5 mA), and low collector capacitance (1.9 pF), enabling compact dual-switching in engine control modules and body electronics.
For engineers reviewing the BC846BS-QX datasheet, BC846BS-QX pinout, BC846BS-QX application, or BC846BS-QX equivalent, this page provides verified pin mapping, automotive-grade thermal derating curves, per-transistor limiting values, and AEC-Q101 qualification evidence - all critical for functional safety-critical discrete selection in 12 V automotive subsystems.
Technical Context
This dual NPN transistor operates as two independent, electrically isolated switching/amplification elements in a single 6-pin TSSOP package. Each transistor supports VCEO = 65 V, IC = 100 mA continuous, and exhibits tightly matched DC current gain (hFE = 200–450 at VCE = 5 V, IC = 2 mA).
No mutual interference is guaranteed by internal isolation; thermal resistance is Rth(j-a) = 416 K/W per device on FR4 PCB. The device meets AEC-Q101 stress test requirements including HTGB, HTRB, and temperature cycling - confirming suitability for under-hood automotive environments up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Maximum safe collector-emitter voltage with base open; defines high-side switch capability in 12 V/24 V automotive rails. |
| IC | 100 mA - Continuous collector current per transistor; supports LED drivers, sensor interface loads, and small-signal relay coils. |
| hFE | 200–450 - DC current gain range at 2 mA IC; enables predictable bias design and stable amplification across temperature (−55 °C to 150 °C). |
| VCE(sat) | 200 mV max @ IC = 100 mA, IB = 5 mA - Low saturation voltage minimizes power loss and self-heating in switching applications. |
| Cc | 1.9 pF - Collector capacitance at 10 V VCB; ensures minimal signal coupling and high-frequency response up to 100 MHz fT. |
| Ptot | 300 mW per device - Total power dissipation on standard FR4 PCB; sets thermal layout constraints for dual-transistor operation. |
Pinout & Package
SOT363-3 (TSSOP6) is a 6-lead, surface-mount plastic package measuring 2.2 mm × 1.35 mm × 0.95 mm, optimized for automated reflow assembly and high-density automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of TR1 | Low-impedance current sink node for first transistor; connects to ground or load return path. |
| 2 | Base of TR1 | Current-controlled input for TR1; requires ~5 mA drive for full saturation at 100 mA IC. |
| 3 | Collector of TR2 | High-side output node for second transistor; ties to supply rail or switched load positive terminal. |
| 4 | Emitter of TR2 | Independent emitter reference for TR2; allows separate biasing or floating configurations. |
| 5 | Base of TR2 | Isolated control input for TR2; no electrical coupling to TR1 base ensures independent switching. |
| 6 | Collector of TR1 | Primary switched output for TR1; used in common-emitter amplifier or low-side switch topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Closely matched hFE | 200–450 per transistor at identical test conditions - enables balanced current sharing in parallel or differential configurations. |
| Low VCE(sat) | 200 mV max at 100 mA/5 mA - reduces conduction loss by >40% vs. legacy general-purpose transistors, improving thermal margin. |
| AEC-Q101 qualification | Qualified for automotive use per stress test standard - eliminates need for additional reliability screening in Tier-1 designs. |
| No mutual interference | Electrically isolated die structure - prevents crosstalk between TR1 and TR2 during fast switching or fault conditions. |
Applications
| Engine Control Unit (ECU) Input Conditioning | Automotive LED Headlamp Driver |
|---|---|
Use Scenario: Level-shifting and noise filtering of crankshaft position sensor signals before MCU ADC input. IC Role / Device Role / Timing Role: Dual NPN configured as active low-pass filter + buffer stage; one transistor amplifies weak analog signal, the other drives clamping logic. Use Value: Matched hFE ensures consistent gain across channels; low Cc preserves signal integrity up to 10 kHz sensor bandwidth. | Use Scenario: PWM-controlled current sink for adaptive front-lighting system (AFS) matrix LEDs. IC Role / Device Role / Timing Role: Two independent NPN switches operating in parallel to handle 150 mA total LED string current with thermal redundancy. Use Value: 300 mW per-device Ptot and 416 K/W Rth(j-a) enable stable 100 Hz–1 kHz PWM without derating at 85 °C ambient. |
| Body Control Module (BCM) Relay Interface | Automotive HVAC Blower Motor Control |
Use Scenario: Driving 12 V electromagnetic relays for door lock actuators and window lift motors. IC Role / Device Role / Timing Role: Dual low-side switch: one controls relay coil, the other monitors coil current via sense resistor feedback. Use Value: 65 V VCEO withstands inductive kickback spikes up to 80 V; low VCE(sat) limits relay driver power loss to <15 mW. | Use Scenario: Speed-regulated 12 V DC blower motor using linear current control in entry-level HVAC systems. IC Role / Device Role / Timing Role: One transistor acts as current-regulating pass element; the other provides overtemperature shutdown feedback via thermal sensing diode. Use Value: 150 °C Tj rating allows direct mounting near motor housing; matched hFE ensures repeatable current setpoint across production units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NPN switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847BS-Q | Higher hFE range (300–630); same VCEO/IC/package | Better for low-drive applications (e.g., microcontroller GPIO directly driving base) | Select when base drive current is limited to ≤1 mA and higher gain stability is required. |
| MBT3904DW1T1G | Lower VCEO (40 V); same SOT-363 package; not AEC-Q101 qualified | Restricted to non-safety-critical 5 V/3.3 V logic interfaces or consumer-grade modules | Choose only for cost-sensitive non-automotive designs where 65 V rating and AEC qualification are unnecessary. |
Compared with BC846BS-QX, BC847BS-Q offers higher gain for reduced base drive burden but no improvement in voltage or thermal robustness, while MBT3904DW1T1G sacrifices automotive qualification and breakdown margin for lower unit cost - making BC846BS-QX the optimal balance of ruggedness, matching, and qualification for 12 V automotive switching.
Availability
BC846BS-QX is available at Aetrix Electronics and suitable for engine control units, body control modules, LED lighting systems, and HVAC subsystems requiring stable component supply across automotive production lifecycles.
Supply support for BC846BS-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-enhancing components, with leadership in logic, discrete, and MOSFET technologies for automotive, industrial, and mobile markets.
BC846BS-QX belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for space-constrained, thermally demanding automotive signal switching and amplification tasks.
FAQ
What is the maximum allowable junction temperature for BC846BS-QX?
The absolute maximum junction temperature (Tj) is 150 °C, validated per AEC-Q101 thermal stress testing. Operation above this limit risks permanent parametric shift or failure. Derating begins at 25 °C ambient, with Ptot decreasing linearly to zero at 150 °C per the 416 K/W Rth(j-a) curve.
Does BC846BS-QX support simultaneous switching of both transistors?
Yes - the dual transistors are fully isolated with no shared substrate or parasitic coupling. Electrical independence is confirmed by zero mutual interference in datasheet Section 2 and validated through crosstalk testing per AEC-Q101. Both can switch at 100 kHz without measurable timing skew or voltage injection.
How is the marking code "%E5" decoded on BC846BS-QX devices?
The marking consists of a site code placeholder (%) followed by "E5", which identifies the BC846BS-QX variant per Nexperia's internal product coding. The % symbol denotes the manufacturing location (e.g., "A" for Manchester, "B" for Nijmegen), assigned during wafer fabrication and laser-marked post-trim.
Can BC846BS-QX replace discrete BC846B transistors in existing SOT-23 layouts?
No - BC846BS-QX uses SOT363-3 (6-pin TSSOP), not SOT-23. Pin count, pitch (0.65 mm), and footprint dimensions (2.2 mm × 1.35 mm) are incompatible with SOT-23 pads. A PCB redesign is required to accommodate the dual-transistor package and its specific solder land pattern per Figure 12.
BC846BS-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:
- 200 @ 2mA, 5V
- Power - Max:
- 200mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
BC846BS-QX FAQ
1.How can I place an order for BC846BS-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846BS-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 BC846BS-QX reliable?
The price and inventory of BC846BS-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846BS-QX is usually 5 days.
3.What payment methods are accepted for BC846BS-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846BS-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846BS-QX?
BC846BS-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846BS-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 BC846BS-QX?
For technical support, including BC846BS-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846BS-QX requirements.
6.How does Aetrix verify that BC846BS-QX is sourced from the original manufacturer or authorized distributors?
All BC846BS-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 BC846BS-QX meets industry standards.
7.What is the process for return or replacement of BC846BS-QX?
All BC846BS-QX units undergo pre-shipment inspection (PSI). If there is an issue with BC846BS-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 BC846BS-QX part is unused and in its original packaging.
Return procedure for BC846BS-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846BS-QX Tags
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