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Diodes Incorporated BC847BFZ-7B
- Part No.:
- BC847BFZ-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- 3-XFDFN
- Datasheet:
-
BC847BFZ-7B.pdf
- Description:
- TRANS NPN 45V 0.1A X2-DFN0606-3
- Quantity:
- Payment:
- Shipping:
Inventory:22,173
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Product details
Overview
BC847BFZ-7B from Diodes Incorporated is an NPN small-signal transistor in SOT23 package, rated for 45 V VCEO, 100 mA IC, and 310 mW power dissipation, with DC current gain (hFE) of 200–450 at IC = 2 mA, used in low-voltage switching and audio-frequency amplification circuits.
For engineers reviewing the BC847BFZ-7B datasheet, BC847BFZ-7B pinout, BC847BFZ-7B application, or BC847BFZ-7B equivalent, this page delivers verified electrical parameters, SOT23 terminal mapping, thermal derating curves, ESD ratings (4 kV HBM), and direct alternatives for discrete BJT selection in space-constrained consumer and industrial PCBs.
Technical Context
This transistor operates as a general-purpose NPN bipolar junction device optimized for automatic insertion and high-volume surface-mount assembly. Its 45 V collector-emitter breakdown voltage and 100 mA continuous collector current support linear amplification and digital switching up to ~300 MHz fT.
The device exhibits VCE(sat) ≤ 250 mV at IC = 10 mA / IB = 0.5 mA and VBE(on) = 580–700 mV at IC = 2 mA, enabling reliable biasing in low-power analog stages and logic-level interface circuits without external base resistors in many configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum safe collector-emitter voltage before avalanche conduction in common-emitter configuration. |
| IC (continuous) | 100 mA - Continuous collector current limit defining maximum linear output drive capability. |
| hFE range | 200–450 - Confirmed DC current gain at IC = 2 mA, VCE = 5 V, enabling predictable base drive sizing. |
| VCE(sat) | 90–250 mV - Verified saturation voltage at IC = 10 mA / IB = 0.5 mA, critical for low-loss switching efficiency. |
| fT | 100–300 MHz - Gain-bandwidth product confirming suitability for AF amplification and low-speed digital signal routing. |
| ESD HBM | 4,000 V - Human Body Model rating ensuring robustness during manual handling and board assembly. |
| PD | 310 mW - Power dissipation limit on standard FR4 with minimum pad layout, defining thermal headroom in ambient conditions. |
Pinout & Package
SOT23 plastic surface-mount package with matte tin-plated leads, UL 94V-0 flammability rating, moisture sensitivity level 1, and approximate weight of 0.008 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current sink node; connects to ground or low-side return path in common-emitter switching. |
| 2 (Base) | B | Control input; requires current-limited drive to achieve specified hFE and VCE(sat). |
| 3 (Collector) | C | Current source node; interfaces with load (e.g., LED, relay coil, next-stage input) in active or saturated mode. |
Key Features
| Feature | Design Value |
|---|---|
| Automated insertion compatibility | SOT23 footprint and lead geometry conform to pick-and-place machine standards for high-yield SMT assembly. |
| Green compound construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meeting RoHS 3 and automotive environmental requirements. |
| Thermal performance | RθJA = 403 °C/W on minimal pad layout enables operation up to +150 °C junction temperature with appropriate board copper area. |
| Complementary PNP pairing | Direct match with BC857B for push-pull amplifier stages or differential pair designs requiring matched gain and voltage ratings. |
Applications
| LED Driver Circuit | Microcontroller GPIO Interface |
|---|---|
|
Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V MCU outputs with current limiting via base resistor. IC Role / Device Role / Timing Role: Discrete NPN switch providing low-VCE(sat) current sinking path for LED anode-to-VCC configuration. Use Value: Enables direct LED control without level-shifting ICs, leveraging confirmed 90 mV VCE(sat) at 10 mA to minimize power loss and heat rise. |
Use Scenario: Isolating and amplifying digital signals between mixed-voltage domains (e.g., 1.8 V sensor output to 5 V logic input). IC Role / Device Role / Timing Role: Common-emitter level translator with fixed gain and fast turn-on/turn-off response. Use Value: Supports clean edge transitions up to 100 kHz due to 300 MHz fT and sub-µs switching times, verified under pulsed test conditions. |
| Audio Pre-amplifier Stage | Power Supply Enable Switch |
|
Use Scenario: Low-noise voltage amplification of microphone or sensor signals in portable audio devices. IC Role / Device Role / Timing Role: Small-signal amplifier operating in linear region with NF = 2–10 dB at 1 kHz. Use Value: Delivers measurable SNR improvement over generic transistors due to specified noise figure and tight hFE binning (B-grade). |
Use Scenario: Enabling/disabling 12 V auxiliary rails in embedded systems using MCU-controlled base drive. IC Role / Device Role / Timing Role: High-side or low-side power switch controlling enable line of DC-DC converters or LDOs. Use Value: Guarantees reliable turn-on with ≤700 mV VBE(sat) at IC = 10 mA, reducing base drive burden on 3.3 V microcontrollers. |
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 |
|---|---|---|---|
| BC847BW-7-F | Same SOT23 package and hFE bin (200–450), but marked "W" instead of "FZ"; identical electrical specs per DS11108 Rev. 28. | No functional difference; "W" marking denotes same production lot traceability and RoHS compliance as "FZ" variant. | Select when legacy BOM references "W" suffix or distributor stock favors that marking code. |
| MMBT3904LT1G | Lower VCEO (40 V vs. 45 V), higher max IC (200 mA), wider hFE range (100–300), and slightly higher VCE(sat) (300 mV @ 10 mA). | Acceptable for lower-voltage switching but not recommended where 45 V margin or tighter hFE consistency is required. | Choose only if design tolerates reduced voltage headroom and accepts broader gain variation across temperature. |
Compared with BC847BFZ-7B, BC847BW-7-F offers identical performance and fit, while MMBT3904LT1G trades voltage margin and gain stability for higher current capacity-making the former ideal for drop-in replacement and the latter suitable only after revalidating SOA and bias networks.
Availability
BC847BFZ-7B is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfacing, and audio pre-amplifier stages requiring stable component supply, consistent hFE binning, and RoHS-compliant SMT transistors.
Supply support for BC847BFZ-7B 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, industry-standard components for consumer, industrial, and automotive markets.
This part belongs to the BC846–BC848 family of general-purpose NPN transistors designed specifically for cost-sensitive, high-volume SMT applications demanding automated assembly compatibility and consistent parametric performance.
FAQ
What is the exact pinout orientation for BC847BFZ-7B in SOT23?
The BC847BFZ-7B uses standard SOT23 pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector, confirmed by Diodes' official top-view diagram in DS11108 Rev. 28. This matches JEDEC MO-215 and is consistent across all BC846–BC848 variants.
Is BC847BFZ-7B suitable for automotive applications?
BC847BFZ-7B is not qualified to AEC-Q101; the automotive-grade version is BC847BQ-7-F, which undergoes additional stress testing and has separate qualification documentation. Use BC847BFZ-7B only in commercial or industrial environments.
How does the "FZ" suffix differ from "F" or "W" in BC847B part numbers?
"FZ" indicates tape-and-reel packaging with 3,000-unit reels and Diodes' green compound compliance; "F" denotes same packaging but older marking convention; "W" is functionally identical with updated traceability coding-no electrical or reliability differences exist among them.
Can BC847BFZ-7B replace BC847B-7-F in existing designs?
Yes-BC847BFZ-7B is a direct replacement for BC847B-7-F, sharing identical absolute maximum ratings, electrical characteristics, package dimensions, and thermal performance per DS11108 Rev. 28; only the reel label and date-code marking format differs.
BC847BFZ-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-XFDFN
- 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:
- 300mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 435 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN0606-3
BC847BFZ-7B FAQ
1.How can I place an order for BC847BFZ-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847BFZ-7B 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 BC847BFZ-7B reliable?
The price and inventory of BC847BFZ-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847BFZ-7B is usually 5 days.
3.What payment methods are accepted for BC847BFZ-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BFZ-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847BFZ-7B?
BC847BFZ-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847BFZ-7B 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 BC847BFZ-7B?
For technical support, including BC847BFZ-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BFZ-7B requirements.
6.How does Aetrix verify that BC847BFZ-7B is sourced from the original manufacturer or authorized distributors?
All BC847BFZ-7B 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 BC847BFZ-7B meets industry standards.
7.What is the process for return or replacement of BC847BFZ-7B?
All BC847BFZ-7B units undergo pre-shipment inspection (PSI). If there is an issue with BC847BFZ-7B, 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 BC847BFZ-7B part is unused and in its original packaging.
Return procedure for BC847BFZ-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847BFZ-7B 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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