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Mean Well SRS-2405 DC-DC Converter - 0.5W - 21.6~26.4V in 5V out
Overview
SRS-2405 is the 5V 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
- 5V
- CURRENT RANGE
- 0 ~ 100mA
- 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-2405 to generate 5V logic power from a 24VDC control circuit?
Yes, this model is intended for applications that need a constant 5V output from a 21.6-26.4VDC input range. It is best matched to low-power logic or control electronics within its 0.5W output rating.
Is the SRS-2405 a fit for powering a small embedded controller section from 24VDC?
It can fit a small embedded controller section if that section only needs a very light 5V rail and the source is 21.6-26.4VDC. The output is fixed at 5V and the total converter power is 0.5W, so it is intended for low-demand electronics rather than broad system loads.
Can the SRS-2405 be used in an automation panel for a 5V interface circuit?
It is suitable for a 5V interface or auxiliary logic circuit in an automation panel when the available input is 21.6-26.4VDC. Its 22.6 x 9.9 x 8.9 mm package also helps where space is tight in compact control hardware.
Would this converter make sense for a low-power 5V monitoring or sensor-support circuit?
Yes, it can be used for a low-power 5V monitoring or support circuit fed from 21.6-26.4VDC. Because the unit is rated at 0.5W and uses constant-voltage output, it is best for light electronics rather than larger sensor groups or higher-load devices.
Can the SRS-2405 be used outdoors or in unprotected locations?
The operating temperature range is -25C to +71C, which defines the thermal limits. However, no IP rating is listed, so there is no stated ingress-protection basis for exposed outdoor placement, making protected indoor enclosures the safer use case.
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