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Mean Well SFTN02L-12 DC-DC Converter - 2W - 4.5~5.5V in 12V out 167mA

Name: Mean Well SFTN02L-12 DC-DC Converter - 2W - 4.5~5.5V in 12V out 167mA
Brand: Mean Well
SKU: SFTN02L-12
Price: 5.94 USD
Availability: InStock

SKU SFTN02L-12

$5.94 USD

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Overview

SFTN02L-12 is the 12V output model of this series: rated power 2W, typical efficiency 80%.

SFTN02 series is 2W isolated and unregulated module type DC-DC converter with SMD package. It features international standard pins, a high efficiency up to 82%, wide working temperature range -40~+100℃, 3KVDC I/P-O/P isolation voltage, compliance to BS EN/EN55032 radiated Class A without additional components, short circuit protection, etc. The models account for different input voltage 5V/12V/24V±10%, and various output voltage, 5V/12V/15V for single output which are suitable for all kinds of systems, such as industrial control, telecommunication field, distributed power architecture, and so on.

Features

SMD package with industry standard pinout
Operating temperature range -40 ~ +100℃
Comply to BS EN/EN55032 radiated Class A without additional components
High efficiency up to 82%
Protection: Short circuit
3KVDC I/O isolation
Low cost
Optional reel packing
3 years warranty

Specifications

SFTN02L-12Specifications from the official datasheet (2026-09-15 edition)

INPUT

INPUT VOLTAGE (RANGE): Normal 5V (4.5 ~ 5.5V)
INPUT CURRENT NO LOAD: 50mA
INPUT CURRENT FULL LOAD: 500mA
VOLTAGE RANGE: 4.5 ~ 5.5Vdc
SURGE VOLTAGE (100ms max.): 5Vin models : 9Vdc 12Vin models : 16Vdc 24Vin models : 30Vdc
FILTER: Internal capacitor
PROTECTION: Fuse recommended. 5Vin models: 800mA Slow-Blow Type 12Vin models: 300mA Slow-Blow Type 24Vin models: 170mA Slow-Blow Type
INTERNAL POWER DISSIPATION: 500mW

OUTPUT

OUTPUT VOLTAGE: 12V
OUTPUT CURRENT: 33 ~ 167mA
EFFICIENCY (TYP.): 80%
CAPACITOR LOAD (MAX.): 220μF
VOLTAGE ACCURACY: ±2.0%
RATED POWER: 2W
RIPPLE & NOISE^Note.2: 75mVp-p
LINE REGULATION^Note.3: 1.2% for 1% input variation
LOAD REGULATION^Note.4: ±8%
SWITCHING FREQUENCY (Typ.): 100KHz

PROTECTION

SHORT CIRCUIT: Standard model: 0.5 second max. Optional models (SC-suffix): Continuous

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: Standard model: -40 ~ +100℃ (Refer to "Derating Curve") ; Optional models (SC-suffix): -40 ~ +105℃
CASE TEMPERATURE: +105℃ max.
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -55 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.03% / ℃ (0 ~ 90℃)
SOLDERING TEMPERATURE: 1.5mm from case of 1 ~ 10sec./240℃ max.
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC ( Note.5,6)

SAFETY STANDARDS: EAC TP TC 020/2011 approved
WITHSTAND VOLTAGE: I/P-O/P:3KVDC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE (Typ.): 80pF
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032(CISPR32) N/A
Radiated BS EN/EN55032(CISPR32) Class A
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, ±8KV air, Level 2±4KV contact
Radiated Susceptibility BS EN/EN61000-4-3 Level 2, 3V/m
EFT/Bursts BS EN/EN61000-4-4 Level 1, 0.5KV at power
Surge BS EN/EN61000-4-5 Level 2, 0.5KV Line-Line
Conducted BS EN/EN61000-4-6 Level 2, 3V(e.m.f.)
Magnetic Field BS EN/EN61000-4-8 Level 1, 1A/m

Parameter	Standard	Test Level
Conducted	BS EN/EN55032(CISPR32)	N/A
Radiated	BS EN/EN55032(CISPR32)	Class A

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, ±8KV air, Level 2±4KV contact
Radiated Susceptibility	BS EN/EN61000-4-3	Level 2, 3V/m
EFT/Bursts	BS EN/EN61000-4-4	Level 1, 0.5KV at power
Surge	BS EN/EN61000-4-5	Level 2, 0.5KV Line-Line
Conducted	BS EN/EN61000-4-6	Level 2, 3V(e.m.f.)
Magnetic Field	BS EN/EN61000-4-8	Level 1, 1A/m

OTHERS

MTBF: 880Khrs min. MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 15.24*10.9*7.1mm (0.6*0.43*0.28 inch)
CASE MATERIAL: Non-Conductive black plastic (UL 94V-0 rated)
PACKING: Standard : 1.2g ; 32pcs/per tube, 3840pcs/120 tube/per carton Optional : 1.2g ; 500pcs/per reel, 2500pcs/5 reel/per carton

Test conditions and notes6

1.All parameters are specified at normal input(L:5Vdc, M:12Vdc, N:24Vdc), rated load, 25℃ 70% RH ambient.
2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf & 47μf capacitor.
3.Line regulation is measured from low line to high line at rated load.
4.Load regulation is measured from 10% to 100% rated load.
5.The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”(as available on http://www.meanwell.com)
6.An external input filter capacitor is required if the module has to meet BS EN/EN61000-4-4, BS EN/EN61000-4-5. The filter capacitor Power Mate suggest: 470μF/100V.

Technical drawings

SFTN02L-12 Mechanical Specification — Mechanical Specification

SFTN02L-12 Pin Assignment — Pin Assignment

SFTN02L-12 Reflow Soldering Curve — Reflow Soldering Curve

Typical applications

Downloads

Certificates3

Mean Well SFTN02-DETN02-EMC Certificate PDF Download

Mean Well SFTN02-DETN02-CE-dec Certificate PDF Download

Mean Well SFTN02-DETN02-UK-dec Certificate PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the SFTN02L-12 to generate 12V from a 4.5-5.5VDC source in embedded equipment?

Yes, this converter is specified for a 4.5-5.5VDC input and provides a constant 12V output. Its 2W rating and listed 167mA output current indicate it is meant for low-power 12V electronics rather than larger loads.

Is the SFTN02L-12 suitable for a small 12V rail in industrial monitoring or control hardware?

It can be used where a regulated 12V output is needed and the available source is 4.5-5.5VDC. The converter is limited to 2W, so it is best matched to light-duty monitoring, control, or interface sections.

Can this model support low-power 12V instrumentation circuits?

Yes, as long as the instrumentation section needs a constant 12V supply and remains within the unit's 2W output capability. The listed output current is 167mA, and that output level should be checked against the actual load requirement.

How does the SFTN02L-12 compare with the other SFTN02L versions?

All listed SFTN02L models are 2W converters with a 4.5-5.5VDC input range, but they differ in output. The SFTN02L-05 is 5V at 400mA, the SFTN02L-12 is 12V at 167mA, and the SFTN02L-15 is 15V at 133mA.

Can the SFTN02L-12 be used in outdoor equipment cabinets?

The operating temperature range of -40°C to +100°C supports use in demanding temperature conditions. However, no IP rating is provided in the specs, so the product data does not confirm outdoor or exposed-environment suitability.

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