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Mean Well SFTN01N-09 DC-DC Converter - 1W - 21.6~26.4V in 9V out 111mA

Name: Mean Well SFTN01N-09 DC-DC Converter - 1W - 21.6~26.4V in 9V out 111mA
Brand: Mean Well
SKU: SFTN01N-09
Price: 5.57 USD
Availability: InStock

SKU SFTN01N-09

$5.57 USD

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Overview

SFTN01N-09 is the 9V output model of this series: rated power 1W, typical efficiency 76%.

SFTN01 series is 1W 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~+90℃, 3KVDC I/P-O/P isolation voltage, compliance to BS EN/EN55032 radiated Class B without additional components, short circuit protection, etc. The models account for different input voltage 5V/12V/24V±10%, and various output voltage, 5V/9V/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 ~ +90℃
Comply to BS EN/EN55032 radiated Class B without additional components
High efficiency up to 82%
Protection: Short circuit
3KVDC I/O isolation
Low cost
Optional reel packing
3 years warranty

Specifications

SFTN01N-09Specifications from the official datasheet (2026-09-15 edition)

INPUT

INPUT VOLTAGE (RANGE): Normal 24V (21.6 ~ 26.4V)
INPUT CURRENT NO LOAD: 10mA
INPUT CURRENT FULL LOAD: 55mA
VOLTAGE RANGE: 21.6 ~ 26.4Vdc
SURGE VOLTAGE (100ms max.): 5Vin models : 9Vdc 12Vin models : 16Vdc 24Vin models : 30Vdc
FILTER: Internal capacitor
PROTECTION: Fuse recommended. 5Vin models: 750mA Slow-Blow Type 12Vin models: 300mA Slow-Blow Type 24Vin models: 150mA Slow-Blow Type
INTERNAL POWER DISSIPATION: 500mW

OUTPUT

OUTPUT VOLTAGE: 9V
OUTPUT CURRENT: 11.1 ~ 111mA
EFFICIENCY (TYP.): 76%
CAPACITOR LOAD (MAX.): 220μF
VOLTAGE ACCURACY: ±2.0%
RATED POWER: 1W
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 ~ +90℃ (Refer to "Derating Curve") ; Optional models (SC-suffix): -40 ~ +105℃
CASE TEMPERATURE: +100℃ max.
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -55 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.03% / ℃ (0 ~ 85℃)
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: UL62368-1(Except for 9V output models), 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 B
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, ±8KV air
Radiated Susceptibility BS EN/EN61000-4-3 Level 2, 3V/m
EFT/Burest BS EN/EN61000-4-4 Level 1, 0.5KV
Surge BS EN/EN61000-4-5 Level 2, 0.5KV Line-Line
Conducted BS EN/EN61000-4-6 Level 2, 3V
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 B

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, ±8KV air
Radiated Susceptibility	BS EN/EN61000-4-3	Level 2, 3V/m
EFT/Burest	BS EN/EN61000-4-4	Level 1, 0.5KV
Surge	BS EN/EN61000-4-5	Level 2, 0.5KV Line-Line
Conducted	BS EN/EN61000-4-6	Level 2, 3V
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 ; 32 pcs/per tube, 3840 pcs/ 120 tube/per carton Optional : 1.2g ; 500 pcs/per reel , 2500 pcs/ 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

SFTN01N-09 Mechanical Specification — Mechanical Specification

SFTN01N-09 Pin Assignment — Pin Assignment

SFTN01N-09 Reflow Soldering Curve — Reflow Soldering Curve

Typical applications

Downloads

Certificates5

Mean Well E183223 UL Certificate PDF Download

Mean Well SBTN01-SFTN01-DETN01-EMC Certificate PDF Download

Mean Well SBTN01-SFTN01-DETN01-CE-dec Certificate PDF Download

Mean Well DETN01-SBTN01-SFTN01-CB(UL) Certificate PDF Download

Mean Well SBTN-SFTN-DETN01-UK-dec Certificate PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the SFTN01N-09 for a low-power 9V circuit in a 24V-class control system?

It is intended for low-power conversion from a 21.6~26.4VDC input to a fixed 9V output. With a 1W rating and listed output current of 111mA, it is positioned for small auxiliary 9V sections rather than larger system loads.

Is the SFTN01N-09 appropriate for compact embedded electronics that need 9V output?

Its 15.24 x 10.9 x 7.1 mm dimensions and 0.0012 kg weight make it suitable where board area and mass are limited. The electrical rating is 1W at a fixed 9V output, so it is best used for very small embedded 9V functions.

Can this model support a small 9V instrumentation or monitoring section?

It can be considered for light-duty instrumentation or monitoring circuits that need a fixed 9V output from a 21.6~26.4VDC source. The 1W power rating means it should be reserved for low-power sections only.

Does the SFTN01N-09 have the environmental protection for outdoor use?

The converter is specified for operation from -40°C to +90°C, which covers a wide temperature range. No IP rating is provided in the product data here, so outdoor or washdown suitability is not established by these specs.

What is the difference between the SFTN01N-09 and the other SFTN01N versions?

The SFTN01N series siblings listed are SFTN01N-05 at 1W, 5V, 200mA; SFTN01N-12 at 1W, 12V, 84mA; and SFTN01N-15 at 1W, 15V, 67mA. The SFTN01N-09 model is the 1W, 9V version with a listed output current of 111mA.

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