R-78B15-1.0 RECOM Power Power Supply (Other) In Stock
The R-78B15-1.0 is a non-isolated DC/DC switching regulator module from RECOM Power in a 3-pin SIP package, delivering a regulated 15 V output at 1 A from a 20 V to 32 V input with 0.4% load regulation and RoHS-compliant construction for industrial embedded power supply designs.
- Manufacturer
- RECOM Power
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- R-78B15-1.0 Datasheet PDF
- Category
- Power Supply
- Temp Range
- -40.0°C to 71.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Regulated 15 V output at 1 A continuous current for industrial interface and sensor power rails
- Narrow 20 V to 32 V input range optimized for 24 V industrial bus step-down conversion
- 0.4% maximum load regulation maintaining output stability from no-load to 1 A full load
- 3-pin SIP (SMA) package offering pin-compatible drop-in replacement for linear 7815 regulators
- RoHS and REACH compliant lead-free construction enabling global export without restriction
Applications
The R-78B15-1.0 is designed to replace linear 7815 regulators in 24 V industrial systems with a high-efficiency switching alternative, eliminating the large heatsink required when dropping 24 V to 15 V at 1 A in panel-mount field devices and PLC I/O modules. Its SIP-3 through-hole footprint allows direct board-level swap-out on legacy designs supplying RS-232/RS-485 transceivers, industrial analog output stages, and relay coil drivers that require a stable 15 V rail. The 20 V to 32 V input tolerance accommodates the ±20% variation typical in 24 V DIN-rail power supply outputs across industrial installation environments.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 7 |
| Analog IC - Other Type | DC-DC REGULATED POWER SUPPLY MODULE |
| Input Voltage-Max | 32V |
| Input Voltage-Min | 20V |
| JESD-30 Code | R-PSMA-T3 |
| Load Regulation-Max | 0.4% |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 15.45V |
| Output Voltage-Min | 14.55V |
| Output Voltage-Nom | 15V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SIP3,.25 |
| Package Shape | RECTANGULAR |
| Package Style | MICROELECTRONIC ASSEMBLY |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Technology | HYBRID |
| Temperature Grade | OTHER |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Total Power Output-Max | 15W |
| Trim/Adjustable Output | NO |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China, Taiwan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output voltage and current does the R-78B15-1.0 provide, and what input range does it accept?
The R-78B15-1.0 delivers a regulated 15 V output at up to 1 A continuous current from an input range of 20 V to 32 V, targeting 24 V industrial bus architectures where a stable 15 V rail is needed for transceiver ICs, analog output modules, and relay coil circuits.
How much power does the R-78B15-1.0 save compared to a linear LM7815 regulator on a 24 V industrial bus at 1 A?
A linear LM7815 dissipates (24 V - 15 V) x 1 A = 9 W as heat at full load, requiring a heatsink, while the R-78B15-1.0 switching module achieves over 85% efficiency, dissipating less than 2.6 W, eliminating the heatsink and reducing cabinet thermal management cost in DIN-rail panel designs.
Can the R-78B15-1.0 replace an existing TO-220 7815 linear regulator on a through-hole PCB without layout modification?
Yes, the R-78B15-1.0 uses a 3-pin SMA SIP package with input, ground, and output pins that match the TO-220 pinout of 7815-type linear regulators, enabling a drop-in replacement that delivers 0.4% load regulation and switching efficiency gains without any PCB rework.
How does the 0.4% load regulation of the R-78B15-1.0 protect analog output accuracy in industrial instrumentation?
With 0.4% maximum load regulation, the R-78B15-1.0 holds the 15 V output within 60 mV from no-load to 1 A full load, ensuring that 4–20 mA analog output transmitters and RS-485 transceiver supply rails stay within the operating tolerance specified by IEC 61158 field bus standards.
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