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Mean Well SPB09C-03 DC-DC Converter - 9W - 36~75V in 3.3V out 2A

SKU SPB09C-03

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Overview

SPB09C-03 is the 3.3V output model of this series: rated power 9W, typical efficiency 82%.

SP B09 and DP B09 series are 9 W isolated and regulated module type DC-DC converter with SIP 8 package. It features international standard pins, a high efficiency up to 89%, wide working temperature range -40~+ 90℃, 1 . 5 KVDC I/P-O/P isolation voltage, continuous -mode short circuit protection, etc. The models account for different input voltage 9~18V and 18~36V and 36~75V 2:1 wide input range, and various output voltage, 3 . 3V /5V/12V/15V /24V for single output and ±5V/±12V/±15V for dual outputs, which are suitable for all kinds of systems, s uch as industrial control, telecommunication field, distributed power architecture, and so on.

Features

SIP8 package with industry standard pinout
2:1 wide input range
Operating temperature range -40 ~ +90℃
No minimum load required
High efficiency up to 89%
Protections: Short circuit (Continuous) / Overload / Input under voltage
1.5KVDC I/O isolation
Remote ON/OFF control
9V model available(optional)
3 years warranty

Specifications

SPB09C-03Specifications from the official datasheet (2024-08-02 edition)

MODEL SELECTION TABLE

INPUT VOLTAGE (RANGE): Normal 48V (36 ~ 75V)
INPUT CURRENT NO LOAD: 5mA
INPUT CURRENT FULL LOAD: 168mA
OUTPUT VOLTAGE: 3.3V
OUTPUT CURRENT: 0 ~ 2000mA
EFFICIENCY (TYP.): 82%
CAPACITOR LOAD (MAX.): 1000μF

INPUT

VOLTAGE RANGE: 36~75Vdc
FILTER: Internal capacitor
PROTECTION: Fuse recommended. 12Vin models: 2A Slow-Blow, 24Vin models: 1A Slow-Blow Type, 48Vin models: 600mA Slow-Blow Type

OUTPUT

VOLTAGE ACCURACY: ±1.5%
RATED POWER: 9W
RIPPLE & NOISE^Note.2: 100mVp-p
LINE REGULATION^Note.3: 0.5%
LOAD REGULATION^Note.4: Single output models: ±0.5% (±1% for 3.3Vout model), Dual output models:±0.5%
SWITCHING FREQUENCY (Min.): 400KHz

PROTECTION

SHORT CIRCUIT: Protection type : Continuous, automatic recovery
OVERLOAD: 120 ~ 250% rated output power Protection type : Recovers automatically after fault condition is removed

FUNCTION

REMOTE CONTROL: Power ON: R.C. ~ -Vin >2.5Vdc or open circuit ; Power OFF: R.C. ~ -Vin <0.8Vdc or short

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: -40 ~ +90℃ (Refer to "Derating Curve")
CASE TEMPERATURE: +115℃ max.
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.03% / ℃ (0 ~ 70℃)
SOLDERING TEMPERATURE: 1.5mm from case of 1 ~ 3sec./260℃ max.
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC ( Note.5)

SAFETY STANDARDS: EAC TP TC 020/2011 (EAC TP TC 004 for 48Vin type only) approved
WITHSTAND VOLTAGE: I/P-O/P:1.5KVDC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE (Typ.): 500pF
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032(CISPR32) N/A
Radiated BS EN/EN55032(CISPR32) Class A/B with external components
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 2, 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/B with external components

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 2, 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: 275Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 24*9.6*11.2mm (0.94*0.38*0.44 inch)
CASE MATERIAL: Non-Conductive black plastic (UL 94V-0 rated)
PACKING: 5g ; 21pcs/per tube, 2100pcs/100 tube/per carton

Test conditions and notes5

1.All parameters are specified at normal input(A:12Vdc, B:24Vdc, C:48Vdc), 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)

Technical drawings

SPB09C-03 Mechanical Specification — Mechanical Specification

SPB09C-03 Plug Assignment — Plug Assignment

SPB09C-03 Remote ON/OFF Control — Remote ON/OFF Control

Typical applications

Downloads

Certificates3

Certificate (SPB09-DPB09-EMC)(EN) PDF Download

Certificate (SPB09-DPB09-CE-dec)(EN) PDF Download

Certificate (SPB-DPB09-UK-dec)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the SPB09C-03 to power 3.3V embedded processors or logic boards from a higher-voltage DC source?

Yes. This model provides a constant 3.3V output from a 36-75VDC input range, which suits embedded logic that needs a regulated low-voltage rail. Its 9W rating and 2A output current fit low-power processor, controller, and interface sections within those limits.

Is the SPB09C-03 suitable for industrial communication modules or low-voltage control electronics?

It can be suitable where 3.3V constant voltage is required and the source falls within 36-75VDC. With 9W power and 2A output current, it is aligned with low-power digital and communications electronics rather than larger loads. That makes it relevant for compact industrial control and embedded communication hardware.

Can this converter be used in telecom or IT equipment that runs a 3.3V logic rail from a 36-75V input range?

Yes, that is the kind of voltage conversion this model is built for. The 36-75VDC input range is broader and higher than the SPB09B family, while the output stays at regulated 3.3V. It is best matched to low-power logic and support circuitry within 9W.

Is the SPB09C-03 appropriate for outdoor enclosures or extreme temperatures?

The operating temperature range is -40°C to +90°C, so the temperature specification supports harsh thermal environments. No IP rating is listed in the provided specs, so outdoor or exposed-use suitability is not established here. The data supports temperature tolerance, but not enclosure sealing.

How does the SPB09C-03 compare with the other SPB09C versions?

All SPB09C models listed here are rated at 9W and use a 36-75VDC input range. The outputs are 3.3V at 2A for SPB09C-03, 5V at 1.6A for SPB09C-05, 12V at 750mA for SPB09C-12, 15V at 600mA for SPB09C-15, and 24V at 375mA for SPB09C-24. The key difference is the output voltage and listed output current for each model.

Payment & Security

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Model	Power	Voltage	Current	IP Rating
Mean Well SPB09C-24 DC-DC Converter - 9W - 36~75V in 24V out	9W	24V	375 Milliampere	IP20	View
Mean Well SPB09C-15 DC-DC Converter - 9W - 36~75V in 15V out 600mA	9W	15V	600 Milliampere	IP20	View
Mean Well SPB09C-12 DC-DC Converter - 9W - 36~75V in 12V out 750mA	9W	12V	750 Milliampere	IP20	View
Mean Well SPB09C-05 DC-DC Converter - 9W - 36~75V in 5V out 1.6A	9W	5V	1.6A	IP20	View
Mean Well SPB09B-24 DC-DC Converter - 9W - 18~36V in 24V out 375mA	9W	24V	375 Milliampere	IP20	View
Mean Well SPB09B-15 DC-DC Converter - 9W - 18~36V in 15V out 600mA	9W	15V	600 Milliampere	IP20	View
Mean Well SPB09B-12 DC-DC Converter - 9W - 18~36V in 12V out 750mA	9W	12V	750 Milliampere	IP20	View
Mean Well SPB09B-05 DC-DC Converter - 9W - 18~36V in 5V out 1.6A	9W	5V	1.6A	IP20	View
Mean Well SPB09B-03 DC-DC Converter - 9W - 18~36V in 3.3V out 2A	9W	3.3V	2A	IP20	View
Mean Well SPB09A-24 DC-DC Converter - 9W - 9~18V in 24V out 375mA	9W	24V	375 Milliampere	IP20	View
Mean Well SPB09A-15 DC-DC Converter - 9W - 9~18V in 15V out 600mA	9W	15V	600 Milliampere	IP20	View
Mean Well SPB09A-12 DC-DC Converter - 9W - 9~18V in 12V out 750mA	9W	12V	750 Milliampere	IP20	View
Mean Well SPB09A-05 DC-DC Converter - 9W - 9~18V in 5V out 1.6A	9W	5V	1.6A	IP20	View
Mean Well SPB09A-03 DC-DC Converter - 9W - 9~18V in 3.3V out 2A	9W	3.3V	2A	IP20	View

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