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MIC94050YM4-TR
Power MOSFET, P Channel, 6 V, 1.8 A, 0.125 ohm, SOT-143, Surface Mount
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- Manufacturer: MICROCHIP
- Product type: Single MOSFETs
- Transistor Polarity:P Channel; Continuous Drain Current Id:-1.8A; Drain Source Voltage Vds:-6V; On Resistance Rds(on):0.125ohm; Rds(on) Test Voltage Vgs:-4.5V; Threshold Voltage Vgs:-
- MSL: MSL 1 - Unlimited
- SVHC: No SVHC (04-Feb-2026)
- No. of Pins: 4Pins
- Channel Type: P Channel
- Product Range: SymFET
- Qualification: -
- Power Dissipation: 568mW
- Transistor Mounting: Surface Mount
- Rds(on) Test Voltage: 4.5V
- Transistor Case Style: SOT-143
- Drain Source Voltage Vds: 6V
- Operating Temperature Max: 150°C
- Continuous Drain Current Id: 1.8A
- Drain Source On State Resistance: 0.125ohm
- Gate Source Threshold Voltage Max: 1.2V
| Delivery and price | |
|---|---|
| Units per pack | 3000 |
| Price | 0.328 € |
| Current stock | 1000+ |
| Lead time | 30 days |
Datasheet
_MIC94050/94051_ _Micrel_ **MIC94050/94051** ## nctr ~~ce~~ L ~~—~~ ## **4-Terminal SymFET™ P-Channel MOSFET** ## **General Description** The MIC94050 and MIC94051 are 4-terminal silicon gate P-channel MOSFETs that provide low on-resistance in a very small package. Designed for high-side switch applications where space is critical, the MIC94050/1 exhibits an on-resistance of typically 0.125Ω at 4.5V gate-to-source voltage. The MIC94050/1 also operates with only 1.8V gate-to-source voltage. The MIC94050 is the basic 4-lead P-channel MOSFET. The MIC94051 is a variation that includes an internal gate pullup resistor that can reduce the system parts count in many applications. The 4-terminal SOT-143 package permits a substrate connection separate from the source connection. This 4-terminal configuration improves the θJA (improved heat dissipation) and makes reverse-blocking switch applications practical. The small size, low threshold, and low R make the DS(on) MIC94050/1 the ideal choice for PCMCIA, USB, back-up battery-power, and distributed power management applications. **==> picture [46 x 10] intentionally omitted <==** **----- Start of picture text -----**<br> SymFET™<br>**----- End of picture text -----**<br> ## **Features** - 0.125Ω typical on-resistance at 4.5V gate-to-source voltage - Operates with 1.8V gate-to-source voltage - Separate substrate connection allows reverse-blocking ## **Applications** - Distributed power management - PCMCIA card power management - USB ports - Battery-powered computers, peripherals - Handheld bar-code scanners - Portable communications equipment - Reverse blocking battery management **Ordering Information Part Number Temp. Range* Package Pb-FREE** MIC94050BM4 –40°C to +150°C SOT-143 NO MIC94051BM4 –40°C to +150°C SOT-143 NO MIC94050YM4 –40°C to +150°C SOT-143 YES MIC94051YM4 –40° to +150°C SOT-143 YES ~~a~~ * Operating Junction Temperature ## ## **Typical PCB Layout** **==> picture [107 x 143] intentionally omitted <==** **----- Start of picture text -----**<br> PCB heat sink<br>D<br>plane improves<br>heat dissipation<br>S S<br>G S<br>PCB traces<br>**----- End of picture text -----**<br> Drain Substrate D _plane improves heat dissipation IdentificationPart_ **P5x Part Number** MIC94050BM4 **Identification** P50 S S MIC94051BM4 P51 MIC94050YM4 P50 Gate Source MIC94051YM4 P51 ~~SS~~ **SOT-143 Package (M4)** G S _PCB traces_ **Schematic Symbol Functional Diagrams** S S Source ~350kΩ Gate Substrate G S S G SS _Internal_ Drain _gate-to-source_ ~~Be~~ D _pull-up resistor_ D **Schematic Symbol MIC94050 MIC94051** **Schematic Symbol** SymFET is a trademark of Micrel, Inc. **Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com** MIC94050/94051 January 2007 1 _MIC94050/94051_ _Micrel_ ## **Absolute Maximum Ratings** Drain-to-Source Voltage ............................................................–6V Gate-to-Source Voltage .................................................–6V Continuous Drain Current TA = 25°C (VGS = 4.5V) ............................................ 1.8A TA = 100°C (VGS = 4.5V) .......................................... 1.2A Total Power Dissipation T = 25°C .............................................................568mW A T = 100°C ...........................................................227mW A Operating Junction Temperature .............. –40°C to +150°C Storage Temperature ................................ –55°C to +150°C ESD Rating, **Note 2** ## **Operating Ratings** Thermal Resistance θ ......................................................................220°C/W JA θ .....................................................................130°C/W JC ## **Electrical Characteristics (Note 1)** |**Electric**|**al Characteristics(Note**|**1)**||||| |---|---|---|---|---|---|---| |**Symbol**|**Parameter**|**Condition (Note 1)**|**Min**|**Typ**|**Max**|**Units**| |VGS|Gate Threshold Voltage|VDS= VGS, ID= –250µA|0.5||1.2|V| |IGSS|Gate-Body Leakage|VDS= 0V, VGS= –4.5V,**Note 2**,**Note 3**|||1|µA| |RGS|Gate-Source Resistance|VDS= 0V, VGS= –4.5V,**Note 2**,**Note 4**|200|350|500|kΩ| |CISS|Input Capacitance|VGS= 0V, VDS= –5.5V||600||pF| |IDSS|Zero Gate Voltage Drain Current|VDS= –5.5V, VGS= 0V|||1|µA| |||VDS= –5.5V, VGS= 0V, TJ= 85°C|||5|µA| |RDS(ON)|Drain-Source On-Resistance|VGS= –4.5V, ID= –100mA<br>VGS= –3.6V, ID= –100mA<br>VGS= –2.5V, ID= –100mA<br>VGS= –1.8V, ID= –100mA||0.125<br>0.135<br>0.165<br>0.225|0.160<br>0.180<br>0.200<br>0.320|Ω<br>Ω<br>Ω<br>Ω| |gFS|Forward Transconductance|VDS= –5.5V, ID= –200mA,**Note 5**||3||S| |**Note 1.**<br>TA= 25°C unless noted. Substrate connected to source for all conditions.||||||| **Note 2.** ESD gate� precautions required **Note 3.** MIC94050 only. **Note 4.** MIC94051 only. **Note 5.** Pulse Test: Pulse Width ≤ 80µs, Duty Cycle ≤ 0.5%. MIC94050/94051 2 January 2007 _MIC94050/94051_ _Micrel_ ## **Typical Characteristics** **==> picture [145 x 144] intentionally omitted <==** **----- Start of picture text -----**<br> Drain Characteristics<br>10<br>9<br>8 3.5VGS<br>7 3.0VGS<br>6<br>5 2.5VGS<br>4<br>3 2.0VGS<br>2<br>1 1.5VGS<br>0<br>0 1 2 3 4 5<br>DRAIN-TO-SOURCE VOLTAGE (V)<br> (A)<br>ID<br>**----- End of picture text -----**<br> **==> picture [325 x 144] intentionally omitted <==** **----- Start of picture text -----**<br> R<br>On-Resistance vs. DS(ON)<br>Gate-to-Source Voltage vs. Drain Current<br>1000 500<br>900<br>800 400 1.8VGS<br>700 ID = 1A<br>600 300 2.5VGS<br>500<br>400 200<br>300<br>200100 ID = 100mA 100 4.2VGS 3.3VGS<br>0 0<br>0 1 2 3 4 5 6 0 1 2 3 4<br>GATE-TO-SOURCE VOLTAGE (V) DRAIN CURRENT (A)<br>(mΩ) (mΩ)<br>DS(ON) DS(ON)<br>R R<br>**----- End of picture text -----**<br> **==> picture [505 x 146] intentionally omitted <==** **----- Start of picture text -----**<br> Source Drain Diode<br>Forward Voltage Drop Gate Threshold RDS(ON) Variance<br>vs. Current vs. Temperature vs. Temperature<br>2.5 1.0<br>0.9 ID = –250µA 1.3<br>2 0.8<br>1.2<br>0.7<br>1.5 0.6 1.1<br>0.5<br>1<br>1 0.4<br>0.3 0.9<br>0.5 0.2<br>100µs Pulse 0.8 VDS=3.6V<br>0.1 ID=0.1A<br>00 1 2 3 4 0.0 0.7-40 -15 10 35 60 85 110 135<br>DRAIN-SOURCE CURRENT (A) TEMPERATURE (°C) TEMPERATURE (°C)<br> (V)<br>F<br> (NORMALIZED)<br>GATE THRESHOLD (V) DS(ON)<br>R<br>DRAIN-SOURCE DIODE V<br>-60 -40 -20 0 20 40 60 80 100 120 140 160<br>**----- End of picture text -----**<br> MIC94050/94051 January 2007 3 _MIC94050/94051_ _Micrel_ ## **Typical Applications** **==> picture [107 x 102] intentionally omitted <==** **----- Start of picture text -----**<br> SS*<br>S D<br>+5V<br>MIC94050<br>G<br>On<br>Off<br>74HC04<br>* Substrate must be<br>connected to source<br>Load<br>**----- End of picture text -----**<br> **Figure 1. Load Switch Application** **==> picture [175 x 149] intentionally omitted <==** **----- Start of picture text -----**<br> +5V<br>Internal<br>Resistor S<br>G<br>Open Drain SS*<br>Output MIC94051 D<br>* Substrate must be<br>connected to source<br>Load<br>**----- End of picture text -----**<br> **Figure 2. Load Switch Application (with internal gate-source pull-up)** **==> picture [356 x 185] intentionally omitted <==** **----- Start of picture text -----**<br> S S<br>S D<br>+4V<br>MIC94050 A B Output<br>G Off Off 0V<br>On Off +4V<br>A OnOff Off On Li Coin Cell<br>On On don’t!<br>2MΩ S S<br>+2.7V to 3.6V<br>Li Coin Cell S D<br>MIC94050<br>G<br>B OnOff<br>Load<br>**----- End of picture text -----**<br> **Figure 3. Reverse-Blocking Battery Back-Up Application** MIC94050/94051 January 2007 4 _MIC94050/94051_ _Micrel_ ## **Package Information** **==> picture [402 x 307] intentionally omitted <==** ## **SOT-143 (M4)** ## **MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA** TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not� reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2002 Micrel, Incorporated MIC94050/94051 January 2007 5
Updated at April 29, 2026
Microchip Technology Inc. is a leading global provider of smart, connected, and secure embedded control solutions. Known for enabling engineers to design with confidence, the company delivers a comprehensive product portfolio that reduces total system costs and accelerates time to market across the industrial, automotive, communications, and computing sectors. Our extensive selection of Microchip components highlights the manufacturer's strength in both discrete semiconductors and advanced wireless connectivity. We carry a robust lineup of highly efficient single MOSFETs and Schottky diodes tailored for demanding power management and switching applications. Alongside these essential discretes, engineers can source a wide array of ready-to-use networking modules, prominently featuring Bluetooth and WLAN adapters that streamline the development of modern IoT and connected devices. Rounding out the offering is a diverse range of Microchip integrated circuits and specialized components. This includes versatile I/O expanders for simplified system integration, precision timing solutions such as MEMS oscillators and pulse generators, as well as AC/DC LED driver ICs and sub-2.4GHz RF transceivers. Backed by Microchip's renowned commitment to exceptional quality and reliable performance, these components provide scalable, dependable building blocks for complex electronic designs.
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