The XP Power IH2409S is a compact dual-output DC-DC converter designed to deliver reliable ±9V power conversion in space-constrained applications. This isolated switching power supply belongs to the board-mount DC-DC converter category and addresses the critical design challenge of providing both positive and negative voltage rails from a single 24V nominal input source while maintaining electrical isolation and high efficiency in a miniaturized form factor.
This 2-watt converter operates from a 21.6V to 26.4V input range and generates dual symmetrical outputs of +9V and -9V, each capable of delivering up to 111mA of current. The device achieves 80% efficiency while providing 1kV of input-to-output isolation, making it suitable for applications requiring electrical safety and noise immunity. The converter is housed in a compact 5-SIP (Single In-line Package) module measuring just 0.77" × 0.28" × 0.40" (19.5mm × 7.2mm × 10.2mm), enabling integration into dense circuit board layouts where space is at a premium.
The through-hole mounting configuration facilitates reliable mechanical attachment and thermal management, while the wide operating temperature range of -40°C to 85°C ensures consistent performance across demanding environmental conditions. The device meets RoHS3 compliance standards, supporting environmentally conscious design requirements, and is specifically rated for ITE (Information Technology Equipment) commercial applications.
Primary advantages include the elimination of center-tapped transformers and discrete voltage regulation circuits typically required for dual-rail power systems, simplified PCB layout through the compact SIP package, excellent line and load regulation characteristics, and built-in protection features inherent to the isolated topology. The converter's high power density and integrated design significantly reduce component count and board space requirements compared to discrete solutions.
The IH2409S demonstrates broad compatibility with 24V industrial and commercial systems, microcontroller circuits requiring dual supply voltages, analog signal conditioning circuits, operational amplifier power supplies, and instrumentation applications. It integrates seamlessly into embedded systems, industrial automation equipment, telecommunications infrastructure, and test and measurement instruments where dual-polarity power rails are essential.
Equivalent and alternative models within the XP Power IH series include the IH2405S (±5V output), IH2412S (±12V output), and IH2415S (±15V output), all sharing the same 2W power rating, package style, and input voltage range while providing different output voltage combinations. Alternative manufacturers offering comparable solutions include Recom Power's REC2-2409SRW series, Murata's NME0509SC, CUI Inc's PEM1-S24-S9-S, and TDK-Lambda's CC1R5-2409SR-E, though specific electrical and mechanical characteristics may vary. When selecting alternatives, designers should verify pin compatibility, thermal characteristics, and regulatory approvals to ensure proper system integration and performance.
IH2409S Key Technical Attributes
The XP Power IH2409S is a board-mount isolated DC-DC converter designed for 24 V nominal systems. It delivers dual outputs of plus 9 V and minus 9 V at up to 111 mA each, providing 2 W total output power with 80 percent typical efficiency. The module features 1 kV isolation for improved noise reduction and safety partitioning between input and output domains. It operates over a commercial ITE temperature range from minus 40 degrees Celsius to plus 85 degrees Celsius, uses a compact 5-pin SIP through-hole package, and is RoHS3 compliant. The specified input window of 21.6 V to 26.4 V aligns with tightly regulated 24 V industrial and commercial power rails.
IH2409S Packing Size
Type
5-pin SIP isolated DC-DC converter, board-mount through-hole module supplied in tube packaging for safe handling on the production line
Material
Encapsulated SIP module construction with a molded miniature body typical of XP Power IH series converters, engineered for mechanical robustness in through-hole assembly
Size
Length 0.77 inch, Width 0.28 inch, Height 0.40 inch which corresponds to approximately 19.5 mm by 7.2 mm by 10.2 mm, enabling dense placement on compact controller and instrumentation boards
Pin configuration
Standard SIP-5 footprint commonly used in bipolar output DC-DC converters, accommodating input positive, input negative, and isolated dual output connections on a single in-line row; consult the IH2409S datasheet for exact pin assignments and recommended PCB land patterns
Thermal characteristics
Ambient operation from minus 40 degrees Celsius to plus 85 degrees Celsius with efficiency up to 80 percent minimizing self-heating; at full load the converter dissipates approximately 0.5 W of heat which may warrant airflow or derating at the upper end of the temperature range; follow datasheet guidance for thermal derating curves and spacing to adjacent components
Electrical properties
Input voltage window 21.6 V to 26.4 V for 24 V nominal systems, dual outputs of plus 9 V and minus 9 V at 111 mA each, 2 W maximum output power, 1 kV isolation barrier, efficiency near 80 percent under typical load; output behavior and ripple should be verified in the datasheet and measured in-circuit with recommended filtering
IH2409S Application
Ideal for generating compact bipolar rails from a 24 V bus in commercial ITE equipment such as op-amp front ends, sensor interfaces, signal conditioning stages, data acquisition modules, small-scale instrumentation, and control systems. The isolated architecture helps break ground loops, reduce conducted noise, and provide clean analog supply rails. Its small SIP footprint and through-hole mounting suit retrofit designs, maintenance-friendly boards, and applications where mechanical retention and easy assembly are preferred.
IH2409S Features
Dual isolated outputs providing plus 9 V and minus 9 V rails that simplify powering precision analog circuits from a single 24 V source
Compact 5-pin SIP package with a very small footprint and low profile for high-density board layouts and narrow card-edge designs
1 kV galvanic isolation improving system robustness by separating input and output grounds and mitigating common-mode interference
Commercial ITE operating temperature from minus 40 degrees Celsius to plus 85 degrees Celsius supporting use in environments from cold start conditions to warm enclosures
80 percent typical efficiency reducing thermal stress and improving energy utilization in continuous operation
Through-hole mounting for strong mechanical retention, reliable solder joints, and straightforward assembly without specialized SMT processes
RoHS3 compliance aligning with modern environmental regulations and facilitating global shipment and manufacturing acceptance
Supplied in tube packaging to protect leads and body during transport and line-side handling, easing kitting and automated insertion
IH2409S Quality and Safety Features
RoHS3 compliant construction supporting environmentally responsible manufacturing and regulatory conformity
Isolation barrier rated to 1 kV enhancing user and equipment safety by segregating low-voltage circuitry from upstream supply transients and ground differences
Robust through-hole SIP form factor that withstands vibration and handling better than many miniature SMT alternatives
Commercial ITE classification suitable for a wide range of office, laboratory, and industrial control electronics where reliable isolation and bipolar rails are needed
Thermal operating range and efficiency that help maintain safe device temperatures when installed with sensible spacing and, where necessary, airflow or derating
IH2409S Compatibility
Optimized for 24 V nominal input systems common in industrial controls, PLC backplanes, building automation, and commercial electronics
Generates standard plus minus 9 V rails widely used in operational amplifier stages, precision analog references, and sensor bias networks
Fits standard SIP-5 footprints employed across the XP Power IH series and many board designs using in-line isolated converters; verify pinout against the IH2409S datasheet before drop-in replacement or cross-brand substitution
Works alongside typical input filtering and output decoupling practices for DC-DC converters; follow manufacturer guidance for placement, grounding, and EMI considerations
IH2409S Datasheet PDF
Our website hosts the most authoritative and up-to-date datasheet for the IH2409S. For accurate pin assignments, detailed electrical characteristics, ripple and regulation data, recommended PCB footprint, and thermal derating information, download the datasheet directly from this page to ensure you are working with the current XP Power specifications.
Quality Distributor
IC-Components is a premium distributor of XP Power products, offering genuine parts, dependable availability, and responsive technical support. With 3011 units currently in stock, we can support both prototyping and production demands. Get a fast, competitive quote on our website and experience professional service, global shipping options, and reliable supply for your IH2409S requirement.
