K78 Series (0.3A-3A) – 12-24W DC-DC Switching Regulator
DC-DC Switching Regulator series, 30 Models. high efficiency 96%. CE certified, CB certified, UL certified, CQC certified, RoHS certified, REACH certified.
Key Features
- SIP/DIP/SMD package options
- Output current 0.3A-3A
- Non-isolated design
- High efficiency up to 96%
- Operating temperature -40°C to +105°C
- Short-circuit and thermal protection
K78 Series (0.3A-3A) Model Specifications
| Model | Power | Input | Output | Current | Efficiency | Isolation |
|---|---|---|---|---|---|---|
| K7803MT-500R4 | 24 (4.5-36)W | 3.3 VAC / 0.5 VDC | 0.89 VDC | — | — | 1.5kVDC |
| K7805MT-500R4 | 24 (6.5-36)W | 5 VAC / 0.5 VDC | 0.91 VDC | — | — | 1.5kVDC |
| K78X6MT-500R4 | 24 (8-36)W | 6.5 VAC / 0.5 VDC | 0.91 VDC | — | — | 1.5kVDC |
| K7809MT-500R4 | 24 (12-36)W | 9 VAC / 0.5 VDC | 0.92 VDC | — | — | 1.5kVDC |
| K7812MT-500R4 | 24 (15-36)W | 12 VAC / 0.5 VDC | 0.92 VDC | — | — | 1.5kVDC |
| K7815MT-500R4 | 24 (18-36)W | 15 VAC / 0.5 VDC | 0.91 VDC | — | — | 1.5kVDC |
| K7803W-500R3 | 24(4.75-36)W | 3.3 VAC / 0.5 VDC | 86 VDC | Chassis | — | 1.5kVDC |
| K7805W-500R3 | 24(6.5-36)W | 5 VAC / 0.5 VDC | 90 VDC | Chassis | — | 1.5kVDC |
| K7809W-500R3 | 24(12-36)W | 9 VAC / 0.5 VDC | 93 VDC | Chassis | — | 1.5kVDC |
| K7812W-500R3 | 24(15-36)W | 12 VAC / 0.5 VDC | 94 VDC | Chassis | — | 1.5kVDC |
| K7815W-500R3 | 24(19-36)W | 15 VAC / 0.5 VDC | 95 VDC | Chassis | — | 1.5kVDC |
| K7801T-500R3 | 12(4.75-28)W | 1.5 VAC / 0.5 VDC | 0.76 VDC | — | — | 1.5kVDC |
| K78X2T-500R3 | 24(4.75-28)W | 1.8 VAC / 0.5 VDC | 0.76 VDC | — | — | 1.5kVDC |
| K7802T-500R3 | 24(4.75-32)W | 2.5 VAC / 0.5 VDC | 0.81 VDC | — | — | 1.5kVDC |
| K7803T-500R3 | 24(4.75-36)W | 3.3 VAC / 0.5 VDC | 0.86 VDC | — | — | 1.5kVDC |
| K7805T-500R3 | 24(6.5-36)W | 5 VAC / 0.5 VDC | 0.9 VDC | — | — | 1.5kVDC |
| K78X6T-500R3 | 24(8-36)W | 6.5 VAC / 0.5 VDC | 0.92 VDC | — | — | 1.5kVDC |
| K7809T-500R3 | 24(12-36)W | 9 VAC / 0.5 VDC | 0.93 VDC | — | — | 1.5kVDC |
| K7812T-500R3 | 24(15-36)W | 12 VAC / 0.5 VDC | 0.94 VDC | — | — | 1.5kVDC |
| K7815T-500R3 | 24(19-36)W | 15 VAC / 0.5 VDC | 0.95 VDC | — | — | 1.5kVDC |
| K7803JT-500R3 | 24(4.75-36)W | 3.3 VAC / 0.5 VDC | 0.86 VDC | — | — | 1.5kVDC |
| K7805JT-500R3 | 24(6.5-36)W | 5 VAC / 0.5 VDC | 0.9 VDC | — | — | 1.5kVDC |
| K7809JT-500R3 | 24(12-36)W | 9 VAC / 0.5 VDC | 0.93 VDC | — | — | 1.5kVDC |
| K7812JT-500R3 | 24(15-36)W | 12 VAC / 0.5 VDC | 0.94 VDC | — | — | 1.5kVDC |
| K7815JT-500R3 | 24(19-36)W | 15 VAC / 0.5 VDC | 0.95 VDC | — | — | 1.5kVDC |
| K78L03-500R3 | 24(4.75-36)W | 3.3 VAC / 0.5 VDC | 0.86 VDC | — | — | 1.5kVDC |
| K78L05-500R3 | 24(6.5-36)W | 5 VAC / 0.5 VDC | 0.9 VDC | — | — | 1.5kVDC |
| K78L12-500R3 | 24(15-36)W | 12 VAC / 0.5 VDC | 0.94 VDC | — | — | 1.5kVDC |
| K78L15-500R3 | 24(19-36)W | 15 VAC / 0.5 VDC | 0.95 VDC | — | — | 1.5kVDC |
| K7803-500R3 | 24(4.75-36)W | 3.3 VAC / 0.5 VDC | 0.86 VDC | — | — | 1.5kVDC |
Applications
- Point-of-load voltage regulation
- FPGA and CPU core power
- High-efficiency power conversion
- Space-constrained PCB designs
Product Overview
The K78 Series (0.3A-3A) is a professional-grade dc-dc switching regulator designed for demanding industrial environments. With a power range of 12-24W, this series offers 30 models with various output voltages to meet diverse application requirements. Key advantages include high efficiency 96%, making it suitable for industrial automation, control systems, and embedded applications. All models are ce certified, cb certified, ul certified, cqc certified, rohs certified, reach certified certified, ensuring compliance with international safety and EMC standards. ModulesLink manufactures each unit under strict quality control with 100% load testing and burn-in procedures.
Technical Details
The K78 Series series features dc-dc switching regulator architecture with input range of 3.3 VAC / 0.5 VDC / 5 VAC / 0.5 VDC / 6.5 VAC / 0.5 VDC / 9 VAC / 0.5 VDC / 12 VAC / 0.5 VDC / 15 VAC / 0.5 VDC / 1.5 VAC / 0.5 VDC / 1.8 VAC / 0.5 VDC / 2.5 VAC / 0.5 VDC, providing output options of 0.89 VDC, 0.91 VDC, 0.92 VDC, 86 VDC, 90 VDC, 93 VDC, 94 VDC, 95 VDC, 0.76 VDC, 0.81 VDC, 0.86 VDC, 0.9 VDC, 0.93 VDC, 0.94 VDC, 0.95 VDC at up to — efficiency. The robust design incorporates comprehensive protection circuits including overcurrent protection (OCP), overvoltage protection (OVP), overtemperature protection (OTP), and short-circuit protection. The high isolation voltage ensures safe operation in noisy industrial environments, while the wide operating temperature range guarantees reliable performance in harsh conditions. Each model undergoes 100% electrical testing and aging tests before shipment.
Quality & Reliability
ModulesLink implements a rigorous quality management system certified to ISO 9001 standards. The K78 Series series carries CE certified, CB certified, UL certified, CQC certified, RoHS certified, REACH certified certifications, demonstrating compliance with IEC/EN/UL safety standards and RoHS/REACH environmental regulations. Every power supply is subjected to 100% load testing, hi-pot testing, and thermal cycling before leaving the factory. The mean time between failures (MTBF) exceeds 500,000 hours under nominal conditions at 25°C ambient temperature. ModulesLink offers a 3-year warranty on all industrial-grade power supplies, reflecting confidence in product reliability.
Ordering Information
To order K78 Series (0.3A-3A) models, select the appropriate output voltage and power rating from the model list above. Each model number follows a standardized naming convention indicating output parameters. For OEM/ODM inquiries, custom output voltages, modified mechanical dimensions, or special input ranges can be accommodated with minimum order quantities (MOQ). Contact ModulesLink sales team through the Request Quote button for pricing, lead time, and technical support. Samples are available for qualified customers to evaluate before volume orders.