R-78B9.0-1.0 RECOM Power Power Supply (Other) In Stock
The R-78B9.0-1.0 is a non-isolated DC/DC switching regulator module from RECOM Power in a 3-pin SIP package, providing a regulated 9 V output at 1 A from a 12 V to 32 V input with 0.4% load regulation and RoHS-compliant construction for embedded power applications.
- Manufacturer
- RECOM Power
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- R-78B9.0-1.0 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
- 9 V regulated output at up to 1 A continuous load current for embedded system power rails
- Wide 12 V to 32 V input range covering standard 12 V, 24 V, and 28 V industrial bus voltages
- 0.4% maximum load regulation ensuring stable output across varying load conditions
- 3-pin SIP (SMA) package pin-compatible with linear regulators for easy drop-in replacement
- RoHS and REACH compliant with lead-free construction for global regulatory compliance
Applications
The R-78B9.0-1.0 replaces linear 7809-type regulators with a high-efficiency switching alternative, dramatically reducing power dissipation in 24 V industrial systems that supply 9 V to sensors, relays, and communication interfaces. Its SIP-3 through-hole footprint allows direct drop-in substitution on existing PCBs without layout changes, accelerating redesigns of legacy industrial I/O modules and field instruments. The 12 V to 32 V input range makes it equally applicable in 12 V automotive accessories and 28 V avionics ground support equipment.
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 | 12V |
| 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 | 9.27V |
| Output Voltage-Min | 8.73V |
| Output Voltage-Nom | 9V |
| 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 | 9W |
| 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-78B9.0-1.0 deliver, and which input voltage range does it accept?
The R-78B9.0-1.0 delivers a regulated 9 V output at up to 1 A continuous current from an input range of 12 V to 32 V, making it compatible with 12 V, 24 V, and 28 V industrial and automotive power buses without an intermediate linear regulator.
How does the R-78B9.0-1.0 compare in efficiency to a linear 7809 regulator when running from a 24 V supply?
A linear 7809 dissipates (24 V - 9 V) x 1 A = 15 W as heat at full load, whereas the R-78B9.0-1.0 switching regulator achieves over 85% efficiency, dissipating less than 2.6 W at the same operating point and eliminating the heatsink required by the linear alternative.
Can the R-78B9.0-1.0 directly replace a three-pin LM7809 linear regulator on an existing PCB without layout changes?
Yes, the R-78B9.0-1.0 uses a 3-pin SIP (SMA) package with input, ground, and output pins that match the TO-220 pinout of LM7809 regulators, enabling a drop-in swap on existing through-hole PCBs with 0.4% load regulation to maintain stable 9 V supply rails.
What load regulation performance does the R-78B9.0-1.0 guarantee, and why does it matter for sensor and relay drive circuits?
The R-78B9.0-1.0 guarantees a maximum load regulation of 0.4%, meaning the 9 V output voltage shifts by no more than 36 mV from no-load to 1 A full load, maintaining relay pull-in threshold margin and sensor supply accuracy within required tolerances across the full 12 V to 32 V input range.
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