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QFN-20
QFN-20
The QFN-20 (Quad Flat No-leads 20-pin) is a surface-mount package designed for high-density circuits. Featuring a leadless design, an exposed thermal pad, and an ultra-thin profile (0.8 mm typical height), it delivers superior heat dissipation, reduced signal interference, and space-saving PCB footprint. Typical dimensions are 4×4 mm with a 0.5 mm pin pitch, making it ideal for power management ICs in portable devices, IoT modules, and RF applications. Its bottom-terminal contacts enable direct PCB thermal transfer, while RoHS-compliant materials ensure reliability in industrial environments.
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1KB 16KB 2.3V~5.5V 16MHz MTP 18 QFN-20 Microcontroller Units (MCUs/MPUs/SOCs) ROHS
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 4587
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8KB 17 1.65V~5.5V ARM-MSeries 48MHz QFN-20 Microcontroller Units (MCUs/MPUs/SOCs) ROHS
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 7641
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8KB 15 1.65V~5.5V ARM-MSeries 64MHz QFN-20 Microcontroller Units (MCUs/MPUs/SOCs) ROHS
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 6935
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QFN-20 DC-DC Converters ROHS
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 3567
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ADC/DAC Specialized ROHS 24 QFN-20
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 3646
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Audio Amplifiers Sabre Stereo Head phone amp
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 8670
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Clock Generators & Support Products VersaClock 3S 5P25021 Prog. Clock
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1000
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USB Interface IC USBXpress - USB to UART Bridge QFN20
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 15000
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42V, 5A Sync Buck Silent Switcher w/ 2.5
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 30000
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 82
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 2500
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 5
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Switching Voltage Regulators
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 241
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Dual-Band 802.11n Wireless LAN Front-End Module
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 3623
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PM6613N Series 24 V 2 to 4-cell Li-Ion Li-FePO4 Battery Charger - QFN-20
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 4727
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2A Switching Charger with NVDC Power Path Management For Single Cell Li+
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 549
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STD ISL95870B TESTING IN UNM/KESM. SHIPPED TO NON-PCN CUST HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 6974
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STD ISL95870B TESTING IN UNM/KESM. SHIPPED TO NON-PCN CUSTOM HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 262
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Buck/BoostRegulator, 3.3V Vout,, 4.25A Switches in a 4x4 20
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1092
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High Efficiency Buck/BoostRegulator with 4.25A Switches in a
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 6507
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High Efficiency Buck-Boost Regulator with 4.5A Switches, 3.3 HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 283
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High Efficiency Buck-Boost Regulator with 4.5A Switches, 3.5 HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1217
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High Efficiency Buck-Boost Regulator with 4.5A Switches, 3.5 HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 3265
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V62/08608-01XB, -55 to 125C VID version of the ISL8560, 20LD HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1635
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ISL85403FRZ-T Full Industrial, 250pc. Reel HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 280
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6A, 3.3V Vout, Low Quiescent Current Synchronous Buck Regula HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 6736
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6A, 1.5V Vout, Low Quiescent Current Synchronous Buck Regula HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 6147
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6A, 1.2V Vout, Low Quiescent Current Synchronous Buck Regula HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 427
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6A, 1.2V Vout, Low Quiescent Current Synchronous Buck Regula HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 6510
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Pb-Free, W/ANNEAL, 2-4 PHASE PWM CONTROLLER, NO DAC, 20L 5X5 HT SUSA CODE:8542390000
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 6093
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Single Mode Wireless Power Receiver 20-Pin QFN
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 2321
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RF Receiver FSK/OOK 2.5V/3.3V 20-Pin QFN EP T/R
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1 + 10 + 25 + 50 + >=100 -
In-stock : 1
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MCU 8-bit 8051 CISC 8KB Flash 2.4V Automotive 20-Pin QFN EP Tube
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 249
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MCU 8-bit 8051 CISC 8KB Flash 2.4V Automotive 20-Pin QFN EP Tube
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 100
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LDO Voltage Regulators 0.95V to 10VIN 3A VLDO w Prog Currnt Lmt
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 20
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RF Receiver FSK/GFSK/OOK 3.3V 20Pin QFN
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1000
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MP2617 Series 4 - 10V 3A Single Cell Li-Battery Charger - QFN-20
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 8144
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1573
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Fuse Holder 6.3A 250V Through Hole Pin
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 418
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 3360
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 10222
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SC5014 Series 4.7 - 27V 50Vout I2C 4 String 120mA Ch HB LED Driver - QFN-20
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1449
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 8
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USB Interface, USB Port Power Controller, USB 2.0, 4.5 V, 5.5 V, QFN, 20 Pins
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1698
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 1040
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IC IEEE 802.3
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 15000
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Hot Swap Controller 1-CH 18V N-Channel Positive Low Voltage 20-Pin QFN EP Tube
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 2495
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 43
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IC REG BUCK ADJ 6A DL 28QFN
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 232
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Integrated Circuits (ICs)
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1 + 10 + 25 + 50 + >=100 -
Minimum : 1 In-stock : 56574
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Q:What defines the physical structure of QFN-20?
A:Key features include:
- Leadless bottom-mounted pads for compact PCB attachment.
- Central thermal pad (80% coverage) for enhanced heat dissipation.
- 20-pin layout with peripheral array for optimized signal routing.
- 0.9 mm ultra-thin profile for space-constrained designs. -
Q:Why choose QFN-20 over alternatives?
A:Critical advantages:
- Miniaturization: 40% smaller than SOIC-20.
- Thermal Performance: Direct PCB heat path via exposed thermal pad.
- Electrical Benefits: Low-inductance design for high-frequency applications.
- Reliability: Moisture-resistant substrate (MSL3 rating). -
Q:What are common technical specs?
A:Standard configurations (consult datasheets):
- Body Size: 4×4 mm.
- Height: 0.9 mm.
- Pin Pitch: 0.5 mm.
- Material: Copper-alloy leads with Ni/Pd/Au plating.
- Temp Range: -40°C to +125°C. -
Q:Where is QFN-20 typically applied?
A:Dominant use cases:
- Power Converters: e.g., Buck/boost ICs (e.g., TPS62130).
- RF Modules: e.g., Bluetooth/Wi-Fi transceivers (e.g., nRF52840).
- Sensor Interfaces: e.g., MEMS accelerometers (e.g., ADXL345). -
Q:What are critical assembly guidelines?
A:Key recommendations:
- PCB Design: Thermal vias under pad (≥4 vias, 0.3 mm diameter).
- Solder Paste: Type 4 solder recommended for fine-pitch reliability.
- Reflow Profile: Peak temp ≤ 245°C (Pb-free process).
- Inspection: X-ray (AXI) mandatory for void detection.