• 1:1 input range
Features
• Efficiency up to 82%
• 1kVDC/1s or 2kVDC/1s isolation option
• Wide operating temperature range from
-40°C to +100°C at full load
• UL60950-1 and IEC/EN60950-1 certified
• 1W SMD package
DC/DC Converter
Unregulated
Converters
R1S/E
Description
1 Watt
SMD
Single Output
The R1S/E series is an unregulated DC/DC converter in fully encapsulated open Frame package style.
This series has been designed to offer exceptionally high efficiency at low loads and an extended
operating temperature range. Uses include battery powered supplies, green energy applications and
general isolating/converting DC power where board space and high efficiency is a premium.
Selection Guide
Part
Number
nom. Input
Voltage
[VDC]
Output
Voltage
[VDC]
Output
Current
[mA]
Efficiency
typ.(1)
max. Capacitive
Load(2)
[%]
[µF]
R1S (3)-3.305/E (4,5)
R1S (3)-0505/E (4,5)
R1S (3)-1205/E (4,5)
R1S (3)-2405/E (4,5)
3.3
5
5
5
5
5
200
200
200
200
81
81
82
80
2200
2200
2200
2200
12
24
Notes:
Note1: Efficiency is tested at nominal input and full load at +25°C ambient
Note2: Max Cap Load is tested at nominal input and full resistive load and is defined as the
capacitive load that will allow start up in under 1s without damage to the converter
E358085
Model Numbering
UL60950-1 certified
CAN/CSA-C22.2 No. 60950-1-07 certified
IEC/EN60950-1 certified
EN55032 compliant
R1S_- __ __ /E_ _
(5)
“Packaging
”
Single
(4)
(3)
“Protection and Isolation Option
”
“Pinning
”
Output Voltage
nom. Input Voltage
Notes:
Note3: without marking denotes 5 pins out of 8 fitted (includes /H option)
with marking “8” denotes 8 pins out of 8 fitted (/H option not available)
Note4: standard part is without continuous short circuit protection
add suffix „/P“ for continuous short circuit protection
add suffix „/H“ for 2kVDC/1s isolation (not available for R1S8)
or add suffix „/HP“ for 2kVDC/1s isolation and continuous short circuit protection
Note5: add suffix „-R“ for tape and reel packaging (compatible with all other suffixes)
Ordering Examples:
R1S8-3.305/E
R1S-3.305/EH
= Single Output, 8 pins out of 8 fitted, 3.3Vin, 5Vout
= Single Output, 5 pins out of 8 fitted, 3.3Vin, 5Vout with 2kVDC/1s isolation
R1S8-0505/EP = Single Output, 8 pins out of 8 fitted, 5Vin, 5Vout with continuous short circuit protection
R1S-0505/EHP-R = Single Output, 8 pins out of 8 fitted, 5Vin, 5Vout with 2kVDC/1s isolation,
continuous short circuit protection and tape and reel packaging
www.recom-power.com
REV.: 3/2019
ECO-1