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Mean Well

Mean Well SRS-1209 DC-DC Converter - 0.5W - 10.8~13.2V in 9V out

SKU SRS-1209
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Overview

SRS-1209 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

SRS-1209Specifications from the official datasheet (2024-08-02 edition)

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
10.8 ~ 13.2V
NORMAL VOLTAGE
12V
INPUT CURRENT Full load
72mA
INPUT CURRENT No load
15mA
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. 1.All parameters are specified at normal input, rated load, 25℃ 70% RH ambient.
  2. 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
  3. 3.Load regulation is measured from 10% to 100% rated load.
  4. 4.Please prevent the converter from operating in overload or short circuit condition for more than 30 seconds.

Technical drawings

SRS-1209 Mechanical Specification
Mechanical Specification
SRS-1209 Packing
Packing

Downloads

FAQ

Can I use the SRS-1209 to provide 9V from a 10.8~13.2V source in embedded equipment?

Yes, this converter is specified for 10.8~13.2V input and gives a 9V constant-voltage output. With 0.5W total power and 0.06A output current, it is aimed at light auxiliary 9V loads in embedded or control electronics.

Is the SRS-1209 suitable for low-power automation or instrumentation subcircuits that need 9V?

It can be used for that type of application when the 9V side remains within 0.06A and the converter stays within 0.5W. That makes it more suitable for small instrumentation, sensing, or interface functions than for larger 9V devices.

Can the SRS-1209 work in compact IT or industrial boards built around a 12V-class supply?

The 22.6 × 9.9 × 8.4 mm size and 0.0031 kg weight support compact board-level use. It is intended for designs that need a small 9V rail while operating from the 10.8~13.2V input range.

Is the SRS-1209 intended for outdoor control boxes?

The listed operating range is -25°C to +71°C, but no IP rating is provided in the specs. That means the temperature range is defined, while environmental sealing for exposed outdoor use is not.

What should I compare when choosing between the SRS-1209 and nearby SRS models?

All listed siblings are 0.5W units, but the output options differ by model. The sibling list shows 5V models SRS-0505, SRS-1205, SRS-2405, and SRS-4805 with listed 100A; 9V models SRS-0509, SRS-1209, SRS-2409, and SRS-4809 at 0.06A; 12V models SRS-0512, SRS-1212, SRS-2412, and SRS-4812 at 0.04A; and 15V models SRS-0515, SRS-1215, SRS-2415, and SRS-4815 at 0.03A.

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Mean Well SRS-1209 DC-DC Converter - 0.5W - 10.8~13.2V in 9V out
Mean Well

Mean Well SRS-1209 DC-DC Converter - 0.5W - 10.8~13.2V in 9V out

Log in to see price

SRS-1209 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
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