POWER AND LINEAR IC SOLUTIONS

SOT23 Transistors Need 80% Less Space

Achieving the same current handling capability as very much larger SOT223 equivalents, a new series of SOT23-packaged bipolar transistors from Zetex Semiconductors will significantly reduce PCB size. A move from the 6.7mm x 7.3mm footprint of the SOT223 to the 2.5mm x 3.05mm footprint of the SOT23 provides a space saving of more than 80%.



Capable of switching loads of up to 400W, the initial offering of six miniature devices comprises three NPN and three PNP transistors, rated at 50V, 60V and 100V. The miniature ZXTN and ZXTP transistors exhibit high power density, dissipating up to 1.2W, and supporting peak collector currents of up to 5A continuous, 12A peak.

The new devices are suitable for use as drivers of power MOSFETs, IGBTs, DC motors, relays, solenoids and high power LEDs.

The transistors’ very low saturation voltage also reduces power losses and increases circuit efficiency. As an illustration, the 100V ZXTN2020F is characterised by a V_CE(sat) of just 50mV for a collector current of 1A.

Zetex SOT23 Selection Table

Part Number	VBR(CEO)V	VBR(CEV) V	IC A	ICM A	PD W	hFE Min	hFE Max	hFE @ IC A	VCE(sat) Max mV	VCE(sat) @ IC A	VCE(sat)@ IB mA	fT MHz	Package
ZXTN2020F	100	160	4	12	1.2	90	300	2	50	1	100	130	SOT23
ZXTN2018F	60	140	5	12	1.2	100	300	2	55	1	50	130	SOT23
ZXTN2031F	50	80	5	12	1.2	200	560	0.5	40	1	100	125	SOT23
ZXTP2029F	-100	-130	-3	-5	1.2	100	300	-1	-80	-1	-100	150	SOT23
ZXTP2027F	-60	-100	-4	-4	1.2	100	300	-2	-60	-1	-100	165	SOT23
ZXTP2025F	-50	-50	-5	-5	1.2	200	560	-0.5	-60	-1	-100	190	SOT23

Features

• Bipolar transistors in SOT23 packages
• Up to 80% board space saving over competing components with similar current handling
• 50V, 60V and 100V NPN and PNP devices
• Switch loads of up to 400W
• Continuous collector current 5A (12A peak)
• Low saturation voltage

Applications

• Drivers for:
  • Power MOSFETs
  • IGBTs
  • DC motors
  • Relays and solenoids
  • High power LEDs

For further information, including FREE Product Samples and Datasheets, please click here