Over 15 years experience of providing support of MEAN WELL Power Supplies
Mean Well SRS-2409 DC-DC Converter - 0.5W - 21.6~26.4V in 9V out
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SRS-2409 is the 9V output model of this series: rated power 0.5W, typical efficiency 60%.
Features
- 1500VDC I/O isolation
- Internal SMD technology
- Built-in EMI filter
- Cooling by free air convection
- Non-conductive plastic case
- Dual in line package
- 100% burn-in test
- Low cost / High reliability
- Approvals: FCC / EAC / CE / UKCA
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 9V
- CURRENT RANGE
- 0 ~ 56mA
- EFFICIENCY (TYP.)
- 60%
- RATED POWER
- 0.5W
- RIPPLE & NOISE (max.)Note.2
- 100mVp-p
- LINE REGULATION
- ±1.0%
- LOAD REGULATIONNote.3
- ±1.0%
- VOLTAGE ACCURACY
- ±2.0%(Typ.) ±3.0%(max.)
- SWITCHING FREQUENCY
- 50KHz min.
INPUT
- VOLTAGE RANGE
- 21.6 ~ 26.4V
- NORMAL VOLTAGE
- 24V
- INPUT CURRENT Full load
- 36mA
- INPUT CURRENT No load
- 9mA
- FILTER
- Capacitor type
- PROTECTION
- Fuse recommended
PROTECTION (Note. 4)
- OVERLOAD
- 150 ~ 350% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- SHORT CIRCUIT
- All output equipped with short circuit Protection type : Hiccup mode, recovers automatically after fault condition is removed
ENVIRONMENT
- WORKING TEMP.
- -25 ~ +71℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20% ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -25 ~ +105℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03% / ℃(0 ~ 50℃)
- VIBRATION
- 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC
- SAFETY STANDARDS
- EAC TP TC 020/2011 approved
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVDC
- ISOLATION RESISTANCE
- I/P-O/P: 100M Ohms / 500VDC / 25℃/ 70% RH
- ISOLATION CAPACITANCE
- 80pF max.
- EMC EMISSION
- Compliance to BS EN/EN55032 Class B, FCC part 15 Class B, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,5,6,8, light industry level, criteria A, EAC TP TC 020
OTHERS
- MTBF
- 600khrs min. MIL-HDBK-217F(25℃)
- DIMENSION
- 22.6*9.9*8.9mm or 0.89"*0.39"*0.35" inch (L*W*H)
- PACKING
- 3.1g ; 22pcs/per tube, 3080pcs/140 tube/per carton
Test conditions and notes4
- 1.All parameters are specified at normal input, rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
- 3.Load regulation is measured from 10% to 100% rated load.
- 4.Please prevent the converter from operating in overload or short circuit condition for more than 30 seconds.
Technical drawings
Downloads
FAQ
Can I use the SRS-2409 for a 9V auxiliary rail in industrial electronics?
Yes, it can be used for a light 9V auxiliary rail when the available source is 21-26VAC. The output is 9V at 0.06A with a 0.5W rating, so it fits low-power industrial electronics rather than higher-draw loads.
Is the SRS-2409 suitable for a small 9V embedded subsystem powered from 24VAC?
It is suitable for a compact embedded subsystem that needs a fixed 9V supply from a 21-26VAC input. The constant-voltage output is useful for circuits that expect a stable 9V rail, provided the load stays within 0.06A and 0.5W.
Can this model support a low-current 9V signal or communications circuit in an automation cabinet?
Yes, it can support a low-current 9V signal or communications circuit inside automation equipment if the circuit demand does not exceed 0.06A. Its small 22.6 x 9.9 x 8.4 mm dimensions are also helpful for dense control assemblies.
Would the SRS-2409 work for a compact 9V measurement or control board?
It can work well for a compact 9V measurement or control board that only needs a modest support rail from 21-26VAC. With a 0.5W ceiling, it is meant for small electronic sections rather than larger actuators or multi-board loads.
Is the SRS-2409 appropriate for outdoor control boxes or washdown areas?
The specified operating temperature range is -25C to +71C, so thermal operation is defined across that span. No IP rating is provided, so exposure to rain, washdown, or open outdoor conditions is not covered by the listed specs and a protected enclosure is the more appropriate environment.
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