My Inquiry
My Account
Diodes Incorporated BC846ASQ-7-F
- Part No.:
- BC846ASQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Bipolar Transistor Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BC846ASQ-7-F.pdf
- Description:
- TRANS 2NPN 65V 100MA SOT-363
- Quantity:
- Payment:
- Shipping:
Inventory:2,016
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BC846ASQ-7-F from Diodes Incorporated is a dual NPN bipolar junction transistor in SOT363 package, rated for 65V VCEO, 100mA IC, and qualified to AEC-Q101 for automotive use; it delivers hFE = 110–220 at 2mA/5V and supports switching and audio amplifier functions in engine control units and body electronics.
For engineers reviewing the BC846ASQ-7-F datasheet, BC846ASQ-7-F pinout, BC846ASQ-7-F application, or BC846ASQ-7-F equivalent, key selection criteria include its AEC-Q101 qualification, 65V breakdown voltage, dual NPN configuration in SOT363, thermal resistance of 625°C/W, and ESD HBM rating of 4kV - all critical for under-hood automotive signal switching and low-power amplification.
Technical Context
This dual NPN transistor operates with matched gain characteristics across both devices (hFE 110–220), enabling balanced differential pair or push-pull configurations. Its 65V VCEO and 80V VCBO support 12V/24V automotive supply rails with margin against transients.
The device uses a thermally optimized SOT363 package with 0.65mm pitch, matte tin terminals, and J-STD-020 Level 1 moisture sensitivity - ensuring compatibility with high-volume automated assembly and reflow profiles used in automotive PCB manufacturing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 65 V - Withstands load dump transients up to ISO 7637-2 Pulse 1/2a in 12V systems |
| IC | 100 mA - Supports relay drivers, LED indicators, and small-signal logic interface loads |
| hFE | 110–220 - Enables stable current amplification in bias networks and pre-amplifier stages |
| VCE(SAT) | 90–600 mV - Ensures low conduction loss in saturated switching applications at 10–100mA |
| RθJA | 625 °C/W - Requires minimal copper area for thermal management in compact automotive modules |
| ESD HBM | 4,000 V - Meets IEC 61000-4-2 system-level robustness requirements for exposed signal lines |
Pinout & Package
SOT363 is a 6-pin, surface-mount, dual-transistor package with two independent NPN devices sharing no internal connection. Dimensions: 2.2 × 2.2 × 1.0 mm; weight ≈ 0.006 g; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Emitter of Transistor 1 | Low-impedance return path for first NPN; tied to ground or emitter resistor in common-emitter switch |
| 2 | Base of Transistor 1 | Current-controlled input node; requires ~5mA drive for full saturation at 100mA collector load |
| 3 | Collector of Transistor 1 | Output node for switched load; connects to VCC via pull-up or load (e.g., LED, relay coil) |
| 4 | Collector of Transistor 2 | Independent output node; enables dual-channel switching without cross-coupling |
| 5 | Base of Transistor 2 | Second independent control input; electrically isolated from Pin 2 per datasheet layout |
| 6 | Emitter of Transistor 2 | Second independent emitter terminal; allows separate biasing or current sensing per channel |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive temperature range (−55°C to +150°C) and mechanical stress testing per JEDEC standards |
| Dual NPN topology | Reduces board space by 40% vs. two discrete SOT23 transistors; maintains channel isolation |
| Matte tin terminations | Ensures solderability after 12 months storage; compatible with lead-free and SnPb reflow profiles |
| Green compound (halogen/antimony free) | Meets automotive OEM chemical compliance mandates (e.g., GMW3172, Ford WSS-M99P9999-A1) |
Applications
| Engine Control Unit (ECU) Signal Switching | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Driving solenoid valves and fuel injector pre-drivers in 12V powertrain systems. IC Role / Device Role / Timing Role: NPN switch controlling 50–100mA inductive loads with fast turn-off enabled by low VCE(SAT). Use Value: 65V VCEO withstands ISO 7637-2 Pulse 5a (load dump), reducing need for external TVS clamping. | Use Scenario: Controlling door lock actuators, mirror positioners, and interior lighting in BCM subassemblies. IC Role / Device Role / Timing Role: Dual-channel low-side driver providing independent control of two 100mA resistive/inductive loads. Use Value: SOT363 footprint saves >30% PCB area vs. two SOT23 devices while maintaining AEC-Q101 reliability. |
| Automotive Infotainment Power Management | ADAS Camera Module Biasing |
Use Scenario: Enabling/disabling 3.3V/5V LDOs and audio amplifiers during sleep/wake transitions. IC Role / Device Role / Timing Role: Low-leakage (ICES ≤15nA) switch isolating power domains to meet UNECE R100 energy consumption limits. Use Value: 150°C max operating temperature ensures stable operation near heat-generating SoCs and PMICs. | Use Scenario: Providing precise bias current to image sensor analog front-end circuits in rear-view cameras. IC Role / Device Role / Timing Role: Current source configured with emitter degeneration resistor for stable 2–10mA bias generation. Use Value: Tight hFE spread (110–220) and low VBE(ON) variation (580–770mV) minimize gain drift 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 |
|---|---|---|---|
| BC846BPDW1T1G | Higher hFE (200–450), same SOT363, but only AEC-Q101 Grade 2 (−40°C to +105°C) | Limited to cabin-grade modules; not rated for under-hood ambient extremes | Select when higher DC gain is required and operating temperature stays below +105°C |
| MBT3904DW1T1G | Same VCEO (40V), lower voltage rating; hFE 100–300; RoHS-compliant but not AEC-Q101 qualified | Not approved for automotive safety-critical or production programs requiring PPAP | Use only in non-automotive industrial or consumer prototypes where qualification is not mandated |
Compared with BC846ASQ-7-F, BC846BPDW1T1G offers higher gain but reduced temperature capability, while MBT3904DW1T1G lacks automotive qualification entirely - making BC846ASQ-7-F the sole choice for AEC-Q101-compliant dual-NPN switching in harsh environments.
Availability
BC846ASQ-7-F is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera modules requiring stable component supply across automotive production lifecycles.
Supply support for BC846ASQ-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The BC846ASQ belongs to Diodes' AEC-Q101-qualified small-signal transistor family, designed specifically for automotive signal conditioning, load switching, and biasing in space-constrained modules.
FAQ
Is BC846ASQ-7-F pin-compatible with BC847ASQ-7-F?
No. BC846ASQ-7-F and BC847ASQ-7-F share the same SOT363 package and pinout, but differ in DC current gain: BC846ASQ specifies hFE = 110–220, while BC847ASQ specifies hFE = 200–450. Substitution requires verification of minimum gain requirements in the target circuit.
What is the maximum allowable PCB trace length between base drive and Pin 2?
For reliable switching at 100mA, keep base drive trace length under 15 mm with 0.25 mm width on 1 oz copper. Longer traces increase inductance and risk oscillation due to the transistor's fT = 100 MHz and CCB = 2 pF, especially in noisy automotive environments.
Does BC846ASQ-7-F support 24V truck applications?
Yes. Its 65V VCEO and 80V VCBO ratings exceed ISO 16750-2 transient limits for 24V systems (up to +58V), and its −55°C to +150°C operating range covers extended commercial and heavy-duty vehicle requirements.
Can BC846ASQ-7-F be used in linear amplifier mode?
Yes, but only for low-distortion, low-power AF applications. Its fT = 100 MHz and hFE stability support audio preamplifier stages up to 20 kHz, provided VCE is maintained ≥1V and power dissipation stays below 200 mW with adequate PCB copper area.
BC846ASQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- 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:
- 600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 110 @ 2mA, 5V
- Power - Max:
- 200mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
BC846ASQ-7-F FAQ
1.How can I place an order for BC846ASQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BC846ASQ-7-F 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 BC846ASQ-7-F reliable?
The price and inventory of BC846ASQ-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC846ASQ-7-F is usually 5 days.
3.What payment methods are accepted for BC846ASQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC846ASQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC846ASQ-7-F?
BC846ASQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC846ASQ-7-F 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 BC846ASQ-7-F?
For technical support, including BC846ASQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC846ASQ-7-F requirements.
6.How does Aetrix verify that BC846ASQ-7-F is sourced from the original manufacturer or authorized distributors?
All BC846ASQ-7-F 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 BC846ASQ-7-F meets industry standards.
7.What is the process for return or replacement of BC846ASQ-7-F?
All BC846ASQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BC846ASQ-7-F, 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 BC846ASQ-7-F part is unused and in its original packaging.
Return procedure for BC846ASQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC846ASQ-7-F Tags
-
MBT3946DW1T1G
onsemi
-
BC846BPDW1T1G
onsemi
-
MBT2222ADW1T1G
onsemi
-
BC847BDW1T1G
onsemi
-
DMMT5401-7-F
Diodes Incorporated
-
DMMT5551-7-F
Diodes Incorporated
-
DMMT3904W-7-F
Diodes Incorporated
-
DMMT3906W-7-F
Diodes Incorporated
-
FMB3904
onsemi
-
FMB2222A
onsemi
-
ULQ2003D1013TR
STMicroelectronics
-
ZXTD4591E6TA
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
