Product category:
Transformers and Inductors
News Release from: Datatronics Romoland | Subject: Model 4257
Edited by the Electronicstalk Editorial
Team on 13 May 2005
Pulse transformers boast high
reliability
New pulse transformers feature a rugged sealed design that meets MIL-PRF-21038 requirements for military, aerospace, instrumentation and other high-reliability applications.
Designed for pulse and signal applications in timing, gate drive and data transmission circuits, the new 4257 pulse transformers from Datatronics Romoland feature a rugged sealed design that meets MIL-PRF-21038 requirements for military, aerospace, instrumentation and other high-reliability applications The rugged Model 4257 pulse transformers feature a dielectric strength of 250V RMS, insulation resistance of 10Gohm and will withstand a maximum peak pulse voltage up to 50V
This article was originally published on Electronicstalk on 18 Aug 2008 at 8.00am (UK)
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Like other Datatronics transformers, the 4283-1200 Series is particularly reliable in unstable or harsh environments.
Transformers drive high-impedance loads
The centre-tapped secondary for the 4283-1250 Series is used for creating both positive and negative outputs.
They offer excellent performance/size ratio advantages, and they are ideal for trigger and signal applications in radar, motor speed controls, instrumentation, data transmission and many other high-reliability applications.
The Model 4257 pulse transformers feature wide inductance range from 30 to 500uH, depending on specific model selected.
DCR is from 0.38 to 0.81ohm - primary.
Other key operating specifications include turns ratio from 1:1:1 to 2:1:1 (primary, secondary, tertiary), leakage from 0.13 to 0.50uH and an interwinding capacitance from 7.5 to 25pF.
Designed to meet MIL-PRF-21038 requirements, the Model 4257 transformers offer high electrical performance while within challenging environments.
They operate from -30 to +80C with a service life exceeding 10kh.
These through-hole transformers are sized at 7.62 x 10.2 x 4.32mm.
Both tube and tape-and-reel packaging are available to support automated assembly, and the Model 4257 transformers are compatible with either dip or wave soldering.
They are priced at $7.00 each in under 1000-piece quantities.
OEM volume pricing is available on request.
Lead-time is stock to 8 weeks.
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