Technical Specifications

SPS1872-xx

For use with Transition Networks Model SPS-1872-xx or equivalent.

Product is certified by the manufacturer to comply with DHHS Rule 21/CFR, Subchapter J applicable at the date of manufacture.

Compliance	UL listed EN60950; FCC & CISPR class A; CE Mark
Dimensions	SPS-1872-SA - 3.875 x 3.125 x 1.0 in (98 x 79 x 25 mm)
(length x width x height)	SPS-1872-CC - 4.625 x 3.125 x 1.062 in (117 x 79 x 27 mm)
	SPS-1872-PS - 4.625 x 3.375 x 1.062 in (117 x 86 x 27 mm)
	SPS-1872-DPS - 4.625 x 3.375 x 1.75 in (117 x 86 x 45 mm)
Power Distribution	12.6 VDC at 1.0 A maximum
Power Consumption	6 W maximum @ 18 VDC input, 12.6 W output
Efficiency	70 % (typical)
Noise and Ripple	± 40 mV peak-to-peak
MTBF	>290,000 hours Belcore with typical load at 50°C
	ambient temperature (calculated according to Belcore).
	>834,000 hours with typical load at 50°C ambient
	temperature (calculated according to MIL-HDBK-217F).
Environment	Tmra*:	0 to 50°C (32 to 122° F )
	Storage Temp:	-20 to 85°C
	Humidity:	5 to 95%, non condensing
	Altitude:	0 to 10,000 feet
	(*Manufacturer’s rated ambient temperature)
Warranty	Lifetime

Technical Specifications -- Continued

Input Voltage	18 - 60 VDC, 24 - 30 VRMS
Isolation Voltage	(Dielectric withstand) Meets IEC 950 for one minute
	1500 VAC: Output/Input
	1500 VAC: Input/Safety GND
	1500 VAC: Output/Case
Output:
Output Voltage	12.6 VDC
Output Current	1.0 A
Load Regulation	±5% at 10% load to full-rated load
Over Load Protection	(OLP) When the average power rating exceeds 125%-
	150% of the maximum power, the output voltage is
	reduced to a safe dissipation level. This action protects
	against output short circuit.
No Load Operation	No damage to power supply when operating at no load.
Transient Protection	No voltage spike at power-on, power-off, or power
	failure.

24-Hour Technical Support: 800-260-1312-- International: 952-941-7600

techsupport@transition.com -- Click the “Transition Now” link for a live Web chat.

(length x width x height)