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TE Schaffner IT249 Pulse Transformers Designed for High Speed Switching and Power Supply Applications

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TE Schaffner IT249 Pulse Transformers Designed for High Speed Switching and Power Supply Applications

Turns Ratio : 2:1:1

Width : 16.7mm

Length : 17.6mm

Operating Temperature : -25℃~+70℃

Description : 2:1:1 Through Hole,17.6x16.7mm Pulse Transformers RoHS

Mfr. Part # : IT249

Model Number : IT249

Package : Through Hole,17.6x16.7mm

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Pulse Transformers IT series with double secondary winding

The IT series pulse transformers offer galvanic isolation between drive and power circuits, providing voltage resistance up to 4 kV and ignition currents up to 1 A. With a turns ratio up to 3:1:1, these transformers are ideal for various switching applications, power supplies, and high-speed data transmission. Key advantages include high potential difference voltage scaling, vacuum potting for very low partial discharge effects, and PCB through-hole mounting. Custom-specific versions are available upon request.

Product Attributes

Brand: Schaffner
Certifications: UL 94 V-0 listed materials

Technical Specifications

Model	Turns ratio	Ignition Current [A]	Nominal Operating Voltage [V]	Test Voltage [kV]	Voltage Rise Time [Vs]	Rise Time [s]	Primary Inductance [mH]	Stray Inductance [H]	Resistance []	Capacitance [pF]	Weight [g]
IT 143	1:1:1	0.025	500	4	800	0.6	15	200	3	10	2
IT 242	1:1:1	0.1	500	3.2	250	0.9	2.5	75	0.75	7	2
IT 243	1:1:1	0.1	500	3.2	250	1	2.5	85	0.8	7	2
IT 213	1:1:1	0.25	380	2.5	450	0.4	6.5	20	1.4	40	2
IT 233	1:1:1	0.25	500	4	300	1.3	3	45	0.8	7	2
IT 253	1:1:1	0.25	500	3.2	160	1.3	1.1	45	0.55	6	2
IT 312	1:1:1	0.25	380	2.5	1200	1	21	35	2.4	30	2
IT 313	1:1:1	1	380	2.5	450	0.6	3	6	0.33	27	2
IT 249	2:1:1	0.25	500	3.2	330	4	17	140	3.1	9	2
IT 244	3:1:1	0.1	500	3.2	200	0.7	15	70	2.8	9	2
IT 234	3:1:1	0.25	500	4	280	1	17	40	2	9	2
IT 314	3:1:1	1	380	2.5	500	1	35	20	1.6	30	2

Key Features

Galvanic separation with secondary winding
Voltage resistance up to 4 kV
Allows high potential difference voltage scaling
Vacuum potting
Very low partial discharge effects
PCB through hole mounting
Custom-specific versions on request

Typical Applications

Gate drive circuit
Power supplies
Power converters
Frequency converters
Switching applications
DC/DC converters
Line coupling transformers in high-speed data transmission

General Specifications

Parameter	Value
Nominal operating voltage	Up to 500 V
Operating frequency	40 kHz max. / 500 kHz max. for data transmission
DC to	40000 Hz
Temperature range (operation and storage)	-25C to +70C (25/70/21)

2411272239_TE---Schaffner-IT249_C6884226.pdf

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