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Diodes Incorporated AC847BQ-7
- Part No.:
- AC847BQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AC847BQ-7.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,828
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Product details
Overview
AC847BQ-7 from Diodes Incorporated is an AEC-Q101 qualified NPN small-signal transistor in SOT23 package, rated for VCEO = 45 V, IC = 100 mA, and hFE = 200–450 (at IC = 2 mA, VCE = 5 V), with fT ≥ 100 MHz. It serves as a switching and audio-frequency amplifier device in automotive body control modules, LED driver stages, and sensor interface circuits.
For engineers reviewing the AC847BQ-7 datasheet, AC847BQ-7 pinout, AC847BQ-7 application, or AC847BQ-7 equivalent, key selection criteria include its AEC-Q101 qualification, SOT23 thermal performance (RθJA = 403 °C/W on minimum pad), DC current gain band (Band B), and automotive-grade ESD robustness (HBM = 4000 V).
Technical Context
This NPN BJT operates in linear amplification and saturated switching modes, with verified DC current gain (hFE) spanning 200–450 at 2 mA collector current and 5 V VCE, and transition frequency fT ≥ 100 MHz under 5 V/10 mA bias. Its low VCE(sat) (90–250 mV at IC = 10 mA/IB = 0.5 mA) supports efficient low-voltage switching.
Designed for automotive environments, it meets IATF 16949 manufacturing standards, features halogen/antimony-free "Green" molding compound (UL 94V-0), and achieves moisture sensitivity level 1 per J-STD-020 - enabling reflow compatibility without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration. |
| IC (continuous) | 100 mA - Continuous collector current limit defining usable linear/saturation range in PCB-mounted operation. |
| hFE | 200–450 - DC current gain band (Band B) at 2 mA/5 V, critical for bias stability in amplifier and switch driver designs. |
| fT | ≥100 MHz - Minimum transition frequency ensuring usable gain up to mid-VHF range in RF-coupled preamp stages. |
| RθJA | 403 °C/W - Junction-to-ambient thermal resistance on minimal 1 oz FR-4 pad, governing power derating above 25°C ambient. |
| ESD HBM | 4000 V - Human Body Model rating confirming robustness against handling-induced electrostatic discharge in assembly lines. |
| VBE(on) | 580–700 mV - Base-emitter turn-on voltage at 2 mA, directly impacting base drive requirements and logic-level compatibility. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package (2.9 mm × 1.3 mm × 1.0 mm max), UL 94V-0 rated, matte tin-plated leads, 0.008 g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Reference node for bias network; connects to ground or low-impedance return path in common-emitter configurations. |
| 2 (Base) | Control input | Receives current-limited drive signal; requires series resistor to limit IB and ensure saturation at target IC. |
| 3 (Collector) | Current source terminal | Connects to load (e.g., relay coil, LED anode); voltage swing limited by VCEO = 45 V rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive temperature range (−65°C to +150°C) and reliability stress tests including HTGB, ELFR, and temperature cycling. |
| SOT23 lead-free & green construction | RoHS 3 compliant (2015/863/EU), <900 ppm Br/Cl, <1000 ppm Sb, UL 94V-0 flammability rating for under-hood applications. |
| High hFE consistency (Band B) | Guaranteed 200–450 hFE at 2 mA/5 V enables predictable biasing without trimming in cost-sensitive consumer and automotive modules. |
| Low VCE(sat) | 90–250 mV at IC/IB = 10 mA/0.5 mA reduces conduction loss in discrete switch implementations versus standard general-purpose transistors. |
Applications
| Automotive Door Module Switching | LED Driver Stage |
|---|---|
Use Scenario: Controlling window lift motor enable signals and mirror fold/unfold relays in door control units. IC Role / Device Role / Timing Role: NPN switch driving 12 V relay coils with logic-level MCU GPIO input. Use Value: Low VCE(sat) minimizes heat generation during sustained activation; AEC-Q101 ensures reliability over 15-year vehicle lifetime. | Use Scenario: Current-switching stage for interior ambient lighting arrays powered from 5 V or 12 V rails. IC Role / Device Role / Timing Role: Discrete constant-current switch regulating LED string brightness via PWM base drive. Use Value: High hFE allows direct MCU GPIO drive without external buffer; SOT23 footprint saves space in tight lighting modules. |
| Engine Control Unit Sensor Interface | Industrial PLC Input Conditioning |
Use Scenario: Amplifying low-level analog signals from crankshaft position Hall-effect sensors before ADC sampling. IC Role / Device Role / Timing Role: Small-signal NPN amplifier in common-emitter configuration with emitter degeneration. Use Value: fT ≥ 100 MHz supports clean amplification of fast edge transitions; noise figure ≤ 10 dB maintains SNR in noisy engine bay environments. | Use Scenario: Level-shifting and isolation of 24 V digital inputs to 3.3 V/5 V microcontroller logic in factory automation controllers. IC Role / Device Role / Timing Role: Discrete optocoupler input stage or discrete voltage translator for isolated field-side signals. Use Value: VCEO = 45 V safely handles industrial transients; ESD HBM = 4000 V prevents latch-up during field wiring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN small-signal transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847B,215 (Nexperia) | Same SOT23 package, VCEO = 45 V, but hFE = 200–450 (same Band B), fT = 100 MHz - identical gain and speed specs; RoHS-compliant but not AEC-Q101 qualified. | Lacks automotive qualification; unsuitable for PPAP-controlled production or safety-critical modules. | Select when automotive compliance is unnecessary and cost optimization is primary. |
| MMBT3904LT1G (onsemi) | VCEO = 40 V (5 V lower), hFE = 100–300 (narrower band), fT = 300 MHz - higher speed but reduced voltage margin and gain consistency. | Higher fT suits RF front-end use; lower VCEO restricts use in 12 V+ automotive switched loads. | Select only where bandwidth >300 MHz is required and voltage headroom is confirmed ≥5 V above rail. |
Compared with BC847B,215 and MMBT3904LT1G, AC847BQ-7 uniquely combines AEC-Q101 qualification, guaranteed Band B hFE, and 45 V VCEO in a single SOT23 device - making it the only drop-in solution for automotive production requiring both reliability certification and predictable gain behavior.
Availability
AC847BQ-7 is available at Aetrix Electronics and suitable for automotive body electronics, LED lighting control, and industrial sensor interface circuits requiring stable component supply across extended product lifecycles.
Supply support for AC847BQ-7 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 AC847xQ series belongs to Diodes' AEC-Q101-qualified small-signal transistor product line, engineered specifically for automotive subsystems demanding consistent gain, thermal resilience, and process-controlled manufacturing.
FAQ
What is the maximum operating temperature for AC847BQ-7?
The AC847BQ-7 is rated for junction and storage temperatures from −65°C to +150°C, validated per AEC-Q101 stress testing. Its thermal resistance RθJA = 403 °C/W (on minimum pad) means at 100 mA IC and 250 mV VCE(sat), power dissipation is ~25 mW - resulting in <10°C junction rise above ambient under still-air conditions.
Is AC847BQ-7 pin-compatible with BC847B?
Yes - AC847BQ-7 uses the standard SOT23 pinout (Emitter-Base-Collector on pins 1-2-3), matching BC847B, MMBT3904, and other industry-standard NPN SOT23 transistors. Mechanical dimensions and solder pad layout are identical per Diodes' published SOT23 outline drawing.
Does AC847BQ-7 require special PCB layout considerations?
Yes - to achieve the specified RθJA = 403 °C/W, Diodes specifies a minimum 1 oz copper pad layout on single-sided FR-4. For higher power operation, use the enhanced 15 mm × 15 mm copper area (RθJA = 357 °C/W) and follow the recommended SOT23 pad dimensions (C = 2.0 mm × 0.8 mm, X1 = 1.35 mm).
What does the "BQ" suffix indicate in AC847BQ-7?
The "BQ" suffix denotes Diodes' automotive-grade qualification: AEC-Q101 compliance, PPAP capability, IATF 16949 manufacturing, and halogen/antimony-free "Green" packaging. It distinguishes this part from commercial-grade variants (e.g., AC847B) which lack automotive validation and material certifications.
AC847BQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 310 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AC847BQ-7 FAQ
1.How can I place an order for AC847BQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AC847BQ-7 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 AC847BQ-7 reliable?
The price and inventory of AC847BQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AC847BQ-7 is usually 5 days.
3.What payment methods are accepted for AC847BQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AC847BQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AC847BQ-7?
AC847BQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AC847BQ-7 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 AC847BQ-7?
For technical support, including AC847BQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AC847BQ-7 requirements.
6.How does Aetrix verify that AC847BQ-7 is sourced from the original manufacturer or authorized distributors?
All AC847BQ-7 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 AC847BQ-7 meets industry standards.
7.What is the process for return or replacement of AC847BQ-7?
All AC847BQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with AC847BQ-7, 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 AC847BQ-7 part is unused and in its original packaging.
Return procedure for AC847BQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AC847BQ-7 Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
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