Diodes Incorporated MMBT3904-7-F
- Part No.:
- MMBT3904-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBT3904-7-F.pdf
- Description:
- TRANS NPN 40V 0.2A SOT-23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,716,804
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Key Analysis of the MMBT3904-7-F
MMBT3904-7-F is one of the most commonly used low-power NPN transistors in SMD format, providing an ideal balance of performance, size and cost for modern electronics.
This device operates as a standard NPN BJT, amplifying base current to control collector current flow. It can function in both linear (analog) and saturation (switching) modes, supporting broad application flexibility.
It supports typical collector currents around 200 mA and offers stable DC gain across low-to-medium current regions. A low collector–emitter saturation voltage improves energy efficiency when used as a digital switch or LED driver.
The MMBT3904-7-F provides fast rise and fall times, making it well suited for pulse shaping, clock circuits, high-speed digital switching, and MOSFET pre-drive applications.
Diodes Inc. ensures tight manufacturing tolerances and long-term reliability. The SOT-23 package provides good thermal conduction for low-power switching and helps maintain consistent behaviour across temperature variations.
The transistor's SOT-23 footprint fits dense PCB layouts and is fully compatible with automated SMT assembly. Low parasitics enhance signal response and reduce switching losses.
Ideal for logic-level switching, analog amplification, sensor interfaces, LED biasing, driver circuits, and small-signal processing in consumer and industrial electronics.
Technical Characteristics
| Transistor Type | NPN Small-Signal BJT |
|---|---|
| Package | SOT-23 (SMD) |
| Collector Current (Ic) | Typically up to 200 mA |
| Collector–Emitter Voltage (Vceo) | 40 V typical (3904 family) |
| Gain (hFE) | Stable hFE across common load ranges |
| Saturation Voltage | Low Vce(sat), improving switching efficiency |
| Switching Speed | Fast for digital and MOSFET drive use |
| Mounting | Surface-mount, reflow compatible |
| Manufacturer | Diodes Incorporated |
Pinout
The MMBT3904-7-F uses the standard NPN SOT-23 transistor pin arrangement:
1 – Base
2 – Emitter
3 – Collector
Package & Mechanical Dimensions
The SOT-23 surface-mount package enables compact board layouts with strong manufacturing compatibility. It offers low parasitic characteristics that enhance high-frequency switching and analog signal accuracy.
Application Fields
Logic switching, buffering, bias circuits, signal amplification.
MOSFET gate drivers, LED drivers, and small relay pre-drive stages.
Used in high-speed switching and digital signal control applications.
Low-power amplification, filtering, and small-signal waveform shaping.
Equivalent Devices & Manufacturer
Equivalent or similar NPN transistors include 2N3904, MMBT2222, and comparable small-signal NPN BJTs with SOT-23 packaging. Engineers should match Ic, Vceo and gain requirements.
Diodes Incorporated is known for high-volume production of discrete semiconductors, offering excellent electrical consistency, reliable sourcing and long-term supply for commercial and industrial OEM applications.
Disclaimer
- Specifications
- FAQ
- Product Comparison
- Tags
- 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):
- 200 mA
- Voltage - Collector Emitter Breakdown (Max):
- 40 V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 5mA, 50mA
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 100 @ 10mA, 1V
- Power - Max:
- 300 mW
- Frequency - Transition:
- 300MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
1. How to order MMBT3904-7-F on DeepFinds Electronics?
Currently, DeepFinds Electronics only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does DeepFinds Electronics guarantee that MMBT3904-7-F is from the original manufacturer or authorized agents?
We have a professional and experienced quality control team to strictly verify and test the MMBT3904-7-F. All suppliers must pass our qualification reviews before they can publish their products including MMBT3904-7-F on DeepFinds Electronics; we pay more attention to the channels and quality of MMBT3904-7-F products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the MMBT3904-7-F price and inventory displayed accurate?
The price and inventory of MMBT3904-7-F fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?
Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.
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5. How is the shipping arranged?
Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.
Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.
Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of MMBT3904-7-F?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MMBT3904-7-F we delivered, we will accept the replacement or return of the MMBT3904-7-F only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of MMBT3904-7-F.
(3)The PartNo is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as MMBT3904-7-F pin diagram, MMBT3904-7-F datasheet?
If you need any after-sales service, please do not hesitate to contact us.
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| Part Number | MMBT3904-7-F | MMBT3904LP-7B | MMBT3904Q-7-F | MMBT3904T-7-F | MMBT3904LP-7 |
| Manufacturer | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated | Diodes Incorporated |
| Series | - | - | - | - | - |
| Package/Case | TO-236-3, SC-59, SOT-23-3 | 3-UFDFN | TO-236-3, SC-59, SOT-23-3 | SOT-523 | 3-UFDFN |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Active | Active | Active | Active | Active |
| Transistor Type | NPN | NPN | NPN | NPN | NPN |
| Current - Collector (Ic) (Max) | 200 mA | 200 mA | 200 mA | 200 mA | 200 mA |
| Voltage - Collector Emitter Breakdown (Max) | 40 V | 40 V | 40 V | 40 V | 40 V |
| Vce Saturation (Max) @ Ib, Ic | 300mV @ 5mA, 50mA | 300mV @ 5mA, 50mA | 300mV @ 5mA, 50mA | 300mV @ 5mA, 50mA | 300mV @ 5mA, 50mA |
| Current - Collector Cutoff (Max) | 50nA (ICBO) | - | 50nA | - | - |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 100 @ 10mA, 1V | 100 @ 10mA, 1V | 100 @ 10mA, 1V | 100 @ 10mA, 1V | 100 @ 10mA, 1V |
| Power - Max | 300 mW | 250 mW | 310 mW | 150 mW | 250 mW |
| Frequency - Transition | 300MHz | 300MHz | 300MHz | 300MHz | 300MHz |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Grade | Automotive | Automotive | Automotive | Automotive | Automotive |
| Qualification | AEC-Q101 | AEC-Q101 | AEC-Q101 | AEC-Q101 | AEC-Q101 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Supplier Device Package | SOT-23-3 | X1-DFN1006-3 | SOT-23-3 | SOT-523 | X1-DFN1006-3 |
