EJR Series Rev F Single & Dual Outputs 10 Watt DC/DC Converter 2:1 Wide Input Voltage Range “Economy” Version of JR Series FEATURES ● Basic Isolation ● RoHS Compliant ● Typical Efficiency: 81% ● Single and Dual Outputs ● 2:1 Wide Input Voltage Range ● Economy Version of JR Series ● No Minimum Load Requirement ● Remote Control (48V Models Only) ● Trim Function (Single Outputs Only) ● Industry Standard Footprint: 2” x 1” x 0.4” ● Approved to IEC/EN60950, UL60950 Safety Standards ● Over Current & Short Circuit Protection (48V Single Output Models Only) SPECIFICATIONS: EJR Series All specifications apply @ ±25°C ambient unless otherwise noted For 48V models only INPUT SPECIFICATIONS PROTECTION (3.3V & 5V single output, 48V input models) Input Voltage Range ...........12V nominal input............. 9 - 18VDC 24V nominal input........... 18 - 38VDC 48V nominal input........... 36 - 75VDC Over Current Protection (3.3V, 5V)..........> 120% Io, auto-recovery Remote Control (for 48V input models only) (Positive Logic) ..............High = on ..................... 3.5 to 10VDC Low = off.................... -0.7 to 0.8VDC (Negative Logic).............Low = on.................... -0.7 to 0.8VDC High = off ..................... 3.5 to 10VDC GENERAL SPECIFICATIONS Remote Control Current......................... 2mA max. (positive logic) 4mA max. (negative logic) Operating Temperature .......................... -40°C to +55°C (ambient) OUTPUT SPECIFICATIONS Operating Case Temperature ............................... -40°C to +100°C Output Current ................................................................ see table Temperature Coefficient .............................................. <±0.02%/°C Output Voltage................................................................ see table MTBF...................................................................>2,000,000 hours Voltage Adjustability (single outputs only)........... 90% to 110% Vo PHYSICAL SPECIFICATIONS Voltage Setpoint Accuracy.....................................±1.0% Vo max. Short Circuit Protection (3.3V, 5V).........Continuous, auto-recovery Efficiency .......................................................................... see table ENVIRONMENTAL SPECIFICATIONS Storage Temperature ............................................ -55°C to+125°C Line Regulation......................................................±0.2% Vo max. Dimensions............................. 50.80(L) x 25.40(W) x 10.16(H) mm 2.0(L) x 1.0(W) x 0.4(H) inches Load Regulation.......................................................0.5% Vo max. Weight ....................................................................................23.3g Maximum Power .................................................................... 10W SAFETY Ripple/Noise .........................< 50mVp-p max. (12V & 24V inputs) < 50mVp-p max. (48V input, dual output) < 100mVp-p max. (48V input, single output) Safety Standards ...................................... IEC/EN60950, UL60950 Transient Response...................................................200mV max. Recovery < 200μs max. (25% load step change from 50% Io) di/dt: 1A/10μs Due to advances in technology, specifications subject to change without notice Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 EJR Series Rev F Single & Dual Outputs 10 Watt DC/DC Converter 2:1 Wide Input Voltage Range “Economy” Version of JR Series OUTPUT VOLTAGE / CURRENT RATING CHARTS Model EJR12S3.3-3000 EJR12S5-2000 EJR12S12-830 EJR12S15-670 EJR24S3.3-3000 EJR24S5-2000 EJR24S12-830 EJR24S15-670 EJR48S3.3-3000 EJR48S5-2000 EJR48S12-830 EJR48S15-670 Input Voltage 12 VDC (9 – 18 VDC) 24 VDC (18 – 38 VDC) 48 VDC (36 – 75 VDC) Model EJR12D5-1000 EJR12D12-420 EJR12D15-330 EJR24D5-1000 EJR24D12-420 EJR24D15-330 EJR48D5-1000 EJR48D12-420 EJR48D15-330 SINGLE OUTPUT MODELS Output Voltage Output Current 3.3 VDC 3000mA 5 VDC 2000mA 12 VDC 830mA 15 VDC 670mA 3.3 VDC 3000mA 5 VDC 2000mA 12 VDC 830mA 15 VDC 670mA 3.3 VDC 3000mA 5 VDC 2000mA 12 VDC 830mA 15 VDC 670mA Input Voltage 12 VDC (9 – 18 VDC) 24 VDC (18 – 38 VDC) 48 VDC (36 – 75 VDC) DUAL OUTPUT MODELS Output Voltage ±5 VDC ±12 VDC ±15 VDC ±5 VDC ±12 VDC ±15 VDC ±5 VDC ±12 VDC ±15 VDC Efficiency 76% 81% 82% 83% 76% 81% 82% 83% 77% 81% 83% 84% Output Current ±1000mA ±420mA ±330mA ±1000mA ±420mA ±330mA ±1000mA ±420mA ±330mA Technical Datasheet View PDF View PDF View PDF View PDF Efficiency 80% 83% 84% 80% 83% 84% 81% 83% 84% NOTES 1. To order models with Trim function add the suffix “-T” to the part number. This option is only available for single output models. 2. Remote Control is only available for 48V nominal input models. 3. For 48V nominal input models without the Remote ON/OFF pin add the suffix “-1” to the end of the part number. 4. Over Current and Short Circuit Protection are only available for the 3.3V single output and the 5V single output, 48V nominal input models. DERATING CURVES Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797 EJR Series Rev F Single & Dual Outputs 10 Watt DC/DC Converter 2:1 Wide Input Voltage Range “Economy” Version of JR Series MECHANICAL DRAWING Unit: inches [mm] BOTTOM VIEW Tolerance: X.Xmm = ±0.5mm X.XXmm = ±0.25mm Pin Length: 5.8mm PIN CONNECTIONS (12V & 24V INPUT MODELS) SINGLE OUTPUT DUAL OUTPUT PIN # 1 +Vin +Vin 2 -Vin -Vin 3 No Pin No Pin 4 +Vo +Vo 5 No Pin (Trim-optional) COM 6 -Vo -Vo PIN # 1 2 3 4 5 6 PIN CONNECTIONS (48V INPUT MODELS) SINGLE OUTPUT DUAL OUTPUT +Vin +Vin -Vin -Vin Remote ON/OFF Remote ON/OFF +Vo +Vo No Pin (Trim-optional) COM -Vo -Vo PIN CONNECTIONS WITHOUT REMOTE ON/OFF PIN (48V INPUT MODELS) PIN # SINGLE OUTPUT DUAL OUTPUT 1 +Vin +Vin 2 -Vin -Vin 3 No Pin No Pin 4 +Vo +Vo 5 No Pin (Trim-optional) Common 6 -Vo -Vo Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833 603-778-2300 www.wallindustries.com Fax 603-778-9797