The series, called JHM20, is particularly intended for use where a reinforced (two measures of patient protection – 2x MOPP) safety isolation barrier is needed – including patient contact and patient vicinity applications.
Certified is by both UL and TUV, and approvals include IEC60601-1, EN60601-1 and ANSI/AMMI ES60601-1 for medical safety.
“This certification, and with the CB report including risk management, allow designers to use them for critical safety barriers with confidence,” said the firm. “Suitable for direct patient contact, the modules have a maximum of just 2.5μA of patient leakage current and offer 2x MOPP at a 250Vac working voltage.”
There are 18 modules, all with a 50.8mm x 25.4mm PCB-mount footprint and all with 2:1 input ranges – at nominal input voltages of 12 (9-18V), 24 (18-36V) or 48Vdc (36-72V).
Isolated, fully-floating, single or dual output versions are available at 5, 12 and 15Vdc – the duals allowing the provision of single 24 or 30V rails.
All single outputs can be trimmed by 10% using a single external resistor.
Maximum efficiency ranges across 86-89% depending on version, and no-load current across 4-11mA.
Operation is from -40C to +80°C, with de-rating required above +60°C.
Short-circuit and over-load are amongst protections included.
The case is made from a self-extinguishing UL94V-0 material.
JHM20 modules are certified to meet EN55011 Level A EMC emissions without external components, as well as IEC60601-1-2 Ed. 4 EMC immunity. “These pre-certifications ease the task of the designer when submitting for system-level approvals,” said the firm.
They come with a three-year warranty.
The series is available from Digi-Key, element14, Farnell, RS Components, some regional distributors or direct from XP Power.
