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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Bipolar Transistor Arrays

Diodes Incorporated DMMT3904W-7-F

Name: DMMT3904W-7-F
Brand: Diodes Incorporated
SKU: DMMT3904W-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMMT3904W-7-F

Manufacturer:: Diodes Incorporated

Category:: Bipolar Transistor Arrays

Package:: 6-TSSOP, SC-88, SOT-363

Datasheet:: DMMT3904W-7-F.pdf

Description:: TRANS 2NPN 40V 200MA SOT-363

Quantity:: RFQ Add To RFQ list

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Inventory:179,385

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Product details

Overview

DMMT3904W-7-F from Diodes Incorporated is a matched dual NPN small-signal transistor in SOT363 package, rated for 40V V_CEO, 200mA I_C, and featuring 2% h_FE matching and 2mV V_BE matching between transistors. It serves as a precision current mirror or differential pair in analog front-ends of instrumentation amplifiers and comparators.

For engineers reviewing the DMMT3904W-7-F datasheet, DMMT3904W-7-F pinout, DMMT3904W-7-F application, or DMMT3904W-7-F equivalent, key selection criteria include intrinsic die-matching tolerance, thermal tracking in dual-transistor configurations, SOT363 footprint compatibility, and compliance with automotive-grade reliability requirements (via Q-grade variant DMMT3904WQ).

Technical Context

The DMMT3904W-7-F integrates two adjacent NPN transistors on a single silicon die to ensure tight parametric matching-critical for minimizing offset in current mirrors and differential pairs. Its matched h_FE (±2%) and V_BE (±2mV) are measured under identical bias conditions (I_C = 2mA, V_CE = 5V), enabling predictable gain ratio and thermal drift cancellation.

Designed for surface-mount analog signal conditioning, it operates across –65°C to +150°C with 200mW total power dissipation and 625°C/W junction-to-ambient thermal resistance on standard FR-4 PCBs. Fully isolated internal structure prevents cross-talk, supporting independent biasing of each transistor.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration.
I_C	200mA - Continuous collector current rating per transistor, defining usable dynamic range in switching or linear operation.
h_FE Matching	±2% - Ensures consistent current gain ratio between transistors, critical for precision current mirroring accuracy.
V_BE Matching	±2mV - Minimizes input offset voltage in differential pairs and improves common-mode rejection.
Package	SOT363 - 6-pin compact surface-mount package with 0.65mm lead pitch, optimized for high-density analog PCB layouts.
P_D	200mW - Total device power dissipation limit at T_A = 25°C, constraining thermal design margin in continuous conduction.
f_T	300MHz - Transition frequency indicating usable bandwidth for small-signal amplification up to RF-adjacent frequencies.

Pinout & Package

Package: SOT363 - 6-pin, 2.15mm × 2.10mm × 1.00mm molded plastic body with matte tin terminations, JEDEC-compliant moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1	Emitter of Transistor 1	Low-impedance reference node for first transistor; tied to ground or current sink in mirror topologies.
2	Base of Transistor 1	Control input for first transistor; bias current sets operating point and gain linearity.
3	Collector of Transistor 1	Output node for first transistor; carries mirrored or amplified current with minimal saturation voltage.
4	Collector of Transistor 2	Second output node; electrically isolated but thermally coupled to Pin 3 for matched drift behavior.
5	Base of Transistor 2	Independent control input; enables differential biasing or separate feedback paths in amplifier designs.
6	Emitter of Transistor 2	Second reference node; allows independent emitter degeneration or current sensing per transistor.

Key Features

Feature	Design Value
Intrinsically matched pair	Adjacent-die fabrication ensures <1°C thermal gradient and identical process variation, enabling sub-mV offset stability.
2% h_FE matching	Reduces gain error in current mirrors to ≤2%, directly improving accuracy of bias current replication.
2mV V_BE matching	Minimizes input-referred offset in differential amplifiers, supporting <10µV input offset in precision op-amp input stages.
Full internal isolation	Electrically separate collectors/emitters allow independent supply rails or floating configurations without crosstalk.

Applications

Current Mirrors

Differential Amplifiers

Use Scenario: Bias current generation for rail-to-rail op-amps and ADC drivers where stable, temperature-invariant reference currents are required.

IC Role / Device Role / Timing Role: Dual-transistor current mirror providing matched output current with <2% gain error and <2mV V_BE mismatch.

Use Value: Enables ±0.1% full-scale accuracy in 16-bit SAR ADC reference buffers by eliminating thermal drift-induced current error.

Use Scenario: Input stage of low-noise instrumentation amplifiers measuring microvolt-level sensor signals in medical ECG front-ends.

IC Role / Device Role / Timing Role: Matched NPN pair forming the core differential pair with common-emitter degeneration for high CMRR.

Use Value: Achieves >100dB common-mode rejection at 60Hz due to <2mV V_BE mismatch and identical h_FE tracking across temperature.

Instrumentation Amplifiers

Comparators

Use Scenario: Gain-setting stage in programmable-gain instrumentation amplifiers used in industrial strain gauge readouts.

IC Role / Device Role / Timing Role: Precision current source/sink pair controlling transconductance of variable-gain cells.

Use Value: Maintains <0.05% gain error over –40°C to +85°C ambient via matched h_FE and thermal coupling.

Use Scenario: High-speed comparator input stage detecting fast-rising edge transitions in motor phase current sensing.

IC Role / Device Role / Timing Role: Matched NPN pair implementing emitter-coupled logic (ECL)-style differential comparison with sub-10ns propagation delay.

Use Value: Delivers 35ns rise/fall time and <200ns storage time, enabling accurate zero-crossing detection at 100kHz PWM frequencies.

Equivalent & Alternatives

The following parts are listed as comparable options for similar matched NPN transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMBT3904W-7-F	Single NPN in SOT363; no matching between devices; h_FE min 100 at I_C = 10mA.	Not suitable for current mirrors or differential pairs requiring inter-device matching.	Select only when discrete biasing or non-matched amplification is sufficient.
BC847BDW1T1G	Matched NPN pair in SOT363; h_FE matching ±3%, V_BE matching ±3mV; lower f_T (250MHz).	Acceptable for medium-precision analog circuits but degrades CMRR in high-gain instrumentation amps.	Prefer for cost-sensitive designs where ±3% matching meets system offset budget.

Compared with DMMT3904W-7-F, DMBT3904W-7-F lacks matching entirely and cannot replace it in precision analog functions, while BC847BDW1T1G offers looser matching tolerances and reduced bandwidth-making DMMT3904W-7-F the optimal choice for applications demanding ≤2mV V_BE mismatch and 300MHz f_T.

Availability

DMMT3904W-7-F is available at Aetrix Electronics and suitable for current mirrors, differential amplifiers, instrumentation amplifiers, and comparators requiring stable component supply, precise parametric matching, and RoHS-compliant green packaging.

Supply support for DMMT3904W-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 industrial, automotive, and computing applications.

The DMMT3904W belongs to Diodes' precision bipolar transistor product line, engineered specifically for analog signal conditioning circuits where die-matched performance and thermal tracking are essential.

FAQ

What is the maximum operating temperature for DMMT3904W-7-F?

The DMMT3904W-7-F supports an operating junction temperature range of –65°C to +150°C, verified per absolute maximum ratings in DS30311 Rev. 15–2. Its SOT363 package achieves this with 625°C/W R_θJA on standard FR-4 PCBs under still-air conditions.

Is DMMT3904W-7-F pin-compatible with standard SOT363 NPN transistors?

Yes-DMMT3904W-7-F uses the JEDEC-standard SOT363 footprint with 0.65mm lead pitch and identical mechanical dimensions. However, its internal dual-NPN topology and pin assignment (E1-B1-C1-C2-B2-E2) differ from single-transistor SOT363 parts like MMBT3904, requiring schematic and layout verification.

Does DMMT3904W-7-F meet automotive qualification standards?

The base DMMT3904W-7-F is not AEC-Q101 qualified, but Diodes offers the automotive-compliant DMMT3904WQ variant documented separately. That version undergoes stress testing per AEC-Q101 and includes enhanced traceability and lot-control documentation for automotive Tier-1 suppliers.

How is matching verified between the two transistors in DMMT3904W-7-F?

Matching is verified per DS30311 test conditions: h_FE ratio and V_BE difference are measured simultaneously on both transistors at I_C = 2mA and V_CE = 5V. The 2% h_FE and 2mV V_BE specs reflect worst-case deviation across production lots, confirmed by Diodes' automated wafer-level binning.

DMMT3904W-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) Matched Pair

Current - Collector (Ic) (Max):: 200mA

Voltage - Collector Emitter Breakdown (Max):: 40V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 5mA, 50mA

Current - Collector Cutoff (Max):: -

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 10mA, 1V

Power - Max:: 200mW

Frequency - Transition:: 300MHz

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-363

DMMT3904W-7-F FAQ

1.How can I place an order for DMMT3904W-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for DMMT3904W-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 DMMT3904W-7-F reliable?

The price and inventory of DMMT3904W-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 DMMT3904W-7-F is usually 5 days.

3.What payment methods are accepted for DMMT3904W-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMMT3904W-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMMT3904W-7-F?

DMMT3904W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMMT3904W-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 DMMT3904W-7-F?

For technical support, including DMMT3904W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMMT3904W-7-F requirements.

6.How does Aetrix verify that DMMT3904W-7-F is sourced from the original manufacturer or authorized distributors?

All DMMT3904W-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 DMMT3904W-7-F meets industry standards.

7.What is the process for return or replacement of DMMT3904W-7-F?

All DMMT3904W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with DMMT3904W-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 DMMT3904W-7-F part is unused and in its original packaging.

Return procedure for DMMT3904W-7-F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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