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MMDT3946 Dataheets PDF



Part Number MMDT3946
Manufacturers Diodes Incorporated
Logo Diodes Incorporated
Description 40V COMPLEMENTARY SMALL SIGNAL TRANSISTOR
Datasheet MMDT3946 DatasheetMMDT3946 Datasheet (PDF)

MMDT3946 40V COMPLEMENTARY SMALL SIGNAL TRANSISTOR IN SOT363 Features  Complementary Pair: One 3904-Type NPN One 3906-Type PNP  Ultra-Small Surface Mount Package  Epitaxial Planar Die Construction  Ideal for Low Power Amplification and Switching  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. "Green" Device (Note 3)  An Automotive-Compliant Part is Available Under Separate Datasheet (MMDT3946Q) Mechanical Data  Package: SOT363  Package Material: Mol.

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MMDT3946 40V COMPLEMENTARY SMALL SIGNAL TRANSISTOR IN SOT363 Features  Complementary Pair: One 3904-Type NPN One 3906-Type PNP  Ultra-Small Surface Mount Package  Epitaxial Planar Die Construction  Ideal for Low Power Amplification and Switching  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and Antimony Free. "Green" Device (Note 3)  An Automotive-Compliant Part is Available Under Separate Datasheet (MMDT3946Q) Mechanical Data  Package: SOT363  Package Material: Molded Plastic, “Green” Molding Compound. UL Flammability Classification Rating 94V-0  Moisture Sensitivity: Level 1 per J-STD-020  Terminals: Finish  Matte Tin Finish. Solderable per MIL-STD-202, Method 208 e3  Weight: 0.006 grams (Approximate) SOT363 C2 B1 E1 Top View E1, B1, C1 = PNP 3906 E2, B2, C2 = NPN 3904 E2 B2 C1 Device Schematic and Pinout Top View Ordering Information (Note 4) Part Number MMDT3946-7-F MMDT3946-7R-F Package SOT363 SOT363 Marking K46 K46 Reel Size (inches) 7 7 Tape Width (mm) 8 8 Qty 3,000 3,000 Packing Carrier Reel Reel Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 4. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes-packaging/. Marking Information K46 = Product Type Marking Code YM = Date Code Marking Y = Year (ex: F = 2018) M = Month (ex: 9 = September) Date Code Key Year Code Month Code 2023 K Jan 1 2024 L Feb Mar 2 3 2025 M Apr 4 2026 N May Jun 5 6 2027 O 2028 P Jul Aug Sep 7 8 9 2029 R 2030 S Oct Nov Dec O N D MMDT3946 Datasheet Number DS30123 Rev.14 - 2 1 of 9 www.diodes.com January 2024 © 2024 Copyright Diodes Incorporated. All Rights Reserved. Absolute Maximum Ratings, NPN 3904 (@TA = +25°C, unless otherwise specified.) Characteristic Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current Symbol VCBO VCEO VEBO IC Value 60 40 6 200 MMDT3946 Unit V V V mA Absolute Maximum Ratings, PNP 3906 (@TA = +25°C, unless otherwise specified.) Characteristic Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current Symbol VCBO VCEO VEBO IC Value -40 -40 -5 -200 Unit V V V mA Thermal Characteristics, Total Device (@TA = +25°C, unless otherwise specified.) Characteristic Power Dissipation (Note 5) Thermal Resistance, Junction to Ambient Air (Note 5) Operating and Storage Temperature Range Symbol PD RJA TJ, TSTG Value 200 625 -55 to +150 Unit mW C/W C Note: 5. For a device mounted on minimum recommended pad layout that is on a single-sided 0.6mm FR-4 PCB; device is measured under still air conditions while operating in a steady state. MMDT3946 Datasheet Number DS30123 Rev.14 - 2 2 of 9 www.diodes.com January 2024 © 2024 Copyright Diodes Incorporated. All Rights Reserved. Thermal Characteristics and Derating Information MMDT3946 -I Collector Current (A) C I Collector Current (A) C V CE(sat) Limit 100m DC 1s 100ms 10m NPN T =25°C amb 1oz Min Copper FR4 10ms 1ms 100µs 1m 100m 1 10 V Collector-Emitter Voltage (V) CE Fig. 1 NPN - Safe Operating Area 100m V CE(sat) Limit DC 1s 100ms 10m 10ms 1ms PNP T =25°C amb 1oz Min Copper FR4 100µs 1m 0.1 1 10 -V Collector-Emitter Voltage (V) CE Fig. 2 PNP - Safe Operating Area 650 600 550 T =25°C amb 1oz Min Copper FR4 500 450 400 350 D=0.5 300 250 200 D=0.3 150 100 D=0.05 Single Pulse 50 D=0.1 0 100µ 1m 10m 100m 1 10 100 1k Pulse Width (s) Fig. 3 Transient Thermal Impedance Max Power Dissipation (W) 0.25 1oz Min Copper FR4 0.20 0.15 0.10 0.05 0.00 0 25 50 75 100 125 150 175 Temperature (°C) Fig. 4 Derating Curve Thermal Resistance (°C/W) Single Pulse 10 T =25°C amb 1oz Min Copper FR4 1 Max Power Dissipation (W) 0.1 100µ 1m 10m 100m 1 10 100 1k Pulse Width (s) Fig. 5 Pulse Power Dissipation MMDT3946 Datasheet Number DS30123 Rev.14 - 2 3 of 9 www.diodes.com January 2024 © 2024 Copyright Diodes Incorporated. All Rights Reserved. MMDT3946 Electrical Characteristics, NPN 3904 (@TA = +25°C, unless otherwise specified.) Characteristic OFF CHARACTERISTICS (Note 6) Collector-Base Breakdown Voltage Collector-Emitter Breakdown Voltage Emitter-Base Breakdown Voltage Collector Cutoff Current Base Cutoff Current ON CHARACTERISTICS (Note 6) Static Forward Current Transfer Ratio Collector-Emitter Saturation Voltage Base-Emitter Saturation Voltage SMALL SIGNAL CHARACTERISTICS Output Capacitance Input Capacitance Input Impedance Voltage Feedback Ratio Small Signal C.


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