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Mean Well SRS-4812 DC-DC Converter - 0.5W - 43.2~52.8V in 12V out

SKU SRS-4812

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Overview

SRS-4812 is the 12V output model of this series: rated power 0.5W, typical efficiency 60%.

Features

Specifications

SRS-4812Specifications from the official datasheet (2024-08-02 edition)

OUTPUT

DC VOLTAGE: 12V
CURRENT RANGE: 0 ~ 42mA
EFFICIENCY (TYP.): 60%
RATED POWER: 0.5W
RIPPLE & NOISE (max.)^Note.2: 100mVp-p
LINE REGULATION: ±1.0%
LOAD REGULATION^Note.3: ±1.0%
VOLTAGE ACCURACY: ±2.0%(Typ.) ±3.0%(max.)
SWITCHING FREQUENCY: 50KHz min.

INPUT

VOLTAGE RANGE: 43.2 ~ 52.8V
NORMAL VOLTAGE: 48V
INPUT CURRENT Full load: 19mA
INPUT CURRENT No load: 5mA
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

SRS-4812 Mechanical Specification — Mechanical Specification

Downloads

Test reports1

Test Report(SRS-4812)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the SRS-4812 to provide 12V for a small embedded control circuit in 48V equipment?

Yes, it is intended for low-power 12V constant-voltage applications when the source is within 43.2 to 52.8V. Its 0.5W rating makes it appropriate for compact embedded control or auxiliary electronics, not larger 12V loads.

Is the SRS-4812 suitable for a 12V interface or relay-driving section in industrial automation hardware?

It can fit a low-power 12V section if the system input stays within 43.2 to 52.8V and the total draw remains within 0.5W. The converter is constant voltage, so it is intended for regulated 12V electronics rather than broad-load power duties.

Can this model be used for a compact 12V auxiliary rail inside telecom or embedded systems?

Yes, the 12V output and 0.5W power rating make it suitable for a small auxiliary rail derived from a 43.2 to 52.8V source. Its 22.6 x 9.9 x 8.4 mm dimensions also support tight-space embedded designs.

Is the SRS-4812 meant for outdoor installations or only protected enclosures?

Its operating temperature range is -25°C to +71°C, so temperature alone supports many equipment environments. Because no IP rating is listed, it is best treated as a converter for indoor or otherwise protected enclosures rather than exposed outdoor use.

How does the SRS-4812 differ from the other 48V-input SRS options?

The 48V-input SRS family keeps the same 0.5W rating and 43.2 to 52.8V input range across the group. The output options are SRS-4805 at 5V and 100A, SRS-4809 at 9V and 0.06A, SRS-4812 at 12V and 0.04A, and SRS-4815 at 15V and 0.03A.

Payment & Security

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Model	Power	Voltage	Current	IP Rating
Mean Well SRS-4815 DC-DC Converter - 0.5W - 43.2~52.8V in 15V out	0.5W	15V	0.034A	IP20	View
Mean Well SRS-4809 DC-DC Converter - 0.5W - 43.2~52.8V in 9V out	0.5W	9V	0.056A	IP20	View
Mean Well SRS-4805 DC-DC Converter - 0.5W - 43.2~52.8V in 5V out	0.5W	5V	100 Milliampere	IP20	View
Mean Well SRS-2415 DC-DC Converter - 0.5W - 21.6~26.4V in 15V out	0.5W	15V	0.034A	IP20	View
Mean Well SRS-2412 DC-DC Converter - 0.5W - 21.6~26.4V in 12V out	0.5W	12V	0.042A	IP20	View
Mean Well SRS-2409 DC-DC Converter - 0.5W - 21.6~26.4V in 9V out	0.5W	9V	0.056A	IP20	View
Mean Well SRS-2405 DC-DC Converter - 0.5W - 21.6~26.4V in 5V out	0.5W	5V	100 Milliampere	IP20	View
Mean Well SRS-1215 DC-DC Converter - 0.5W - 10.8~13.2V in 15V out	0.5W	15V	0.034A	IP20	View
Mean Well SRS-1212 DC-DC Converter - 0.5W - 10.8~13.2V in 12V out	0.5W	12V	0.042A	IP20	View
Mean Well SRS-1209 DC-DC Converter - 0.5W - 10.8~13.2V in 9V out	0.5W	9V	0.056A	IP20	View
Mean Well SRS-1205 DC-DC Converter - 0.5W - 10.8~13.2V in 5V out	0.5W	5V	100 Milliampere	IP20	View
Mean Well SRS-0515 DC-DC Converter - 0.5W - 4.5~5.5V in 15V out	0.5W	15V	0.034A	IP20	View
Mean Well SRS-0512 DC-DC Converter - 0.5W - 4.5~5.5V in 12V out	0.5W	12V	0.042A	IP20	View
Mean Well SRS-0509 DC-DC Converter - 0.5W - 4.5~5.5V in 9V out	0.5W	9V	0.056A	IP20	View
Mean Well SRS-0505 DC-DC Converter - 0.5W - 4.5~5.5V in 5V out	0.5W	5V	100 Milliampere	IP20	View

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Mean Well SRS-4812 DC-DC Converter - 0.5W - 43.2~52.8V in 12V out

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION (Note. 4)

ENVIRONMENT

SAFETY & EMC

OTHERS

Technical drawings

Downloads

Test reports1

Catalogues2

FAQ

Payment & Security

Other SRS Series Models

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Mean Well SRS-4812 DC-DC Converter - 0.5W - 43.2~52.8V in 12V out

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