RS Components
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RS PRO PCB Mount Switching Regulator, 12V dc Output Voltage, 16 → 36V dc Input Voltage, 1A Output Current

Temporarily out of stock - back order for despatch when stock is available
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Unit of sale 1 Tube of 44

Was €259.54


(exc. VAT)


(inc. VAT)



RS Stock No.:
COO (Country of Origin):
Tube(s)Per TubePer unit*
1 - 4€182.13€4.139
5 - 9€176.67€4.015
10 - 24€171.20€3.891
25 - 49€165.74€3.767
50 +€160.28€3.643
*price indicative

RS PRO DC-to-DC Switching Regulators, K78 series

Introducing the RS PRO K78 range Switching Regulators, a series of wide input voltage non-isolated and regulated singe output converters. These high-quality switching regulators are direct replacements for the LM78 series three-terminal linear regulators, with the added benefit of being able to perform load conversions for greater flexibility. These RS PRO regulated converters have a low ripple and standby power consumption, making them highly efficient to work at full load without the need for a heat sink, and additionally making them ideal for use in instrumentation, IoT and a wide variety of battery-powered applications.

Features and Benefits:

  • The RS PRO regulators offer high efficiency of up to 96%

  • No-load input current as low as 0.1mA

  • Operating ambient temperature range -40°C to +85 °C

  • Output short-circuit protection

  • Pin compatible with RS PRO LM78xx series as a direct replacement voltage regulator

  • 3 Year Warranty


Switching regulators are circuits that are easily able to take energy from an input voltage source and push them into the output by using an electrical switch and controller. This switch and controller have the ability to ’regulate’ the rate at which the energy is moved to the output. The main benefit of switching regulators is that they work at a greater efficiency than their linear counterparts, making them more economical and better to drive higher input voltages in a wide variety of power management applications. Switching regulators are commonly used in:

  • Mobile phones

  • Games consoles

  • Computers and laptops

  • Digital cameras

  • Power supplies

Approvals and Certifications:

  • IEC60950, UL60950, EN60950 Approved

  • CE Certified

What other switching regulators are available in this range?

The range of RS PRO K78 series switching regulators are listed below:
193-4013 24 VDC (Input Voltage), 3.3 VDC (Output Voltage), 1A
193-4015 24 VDC (Input Voltage), 5 VDC (Output Voltage), 1A
193-4017 24 VDC (Input Voltage), 9 VDC (Output Voltage), 1A
193-4019 24 VDC (Input Voltage), 12 VDC (Output Voltage), 1A
193-4021 24 VDC (Input Voltage), 15 VDC (Output Voltage), 1A
193-4023 24 VDC (Input Voltage), 3.3 VDC (Output Voltage), 1A - Horizontal mount with 90-degree angled pins
193-4025 24 VDC (Input Voltage), 5 VDC (Output Voltage), 1A - Horizontal mount with 90-degree angled pins
193-4028 24 VDC (Input Voltage), 12 VDC (Output Voltage), 1A - Horizontal mount with 90-degree angled pins


RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards
they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

Input Voltage16 → 36V dc
Output Voltage12V dc
Number of Outputs1
Output Current1A
Mounting TypePCB Mount
Minimum Temperature-40°C
Maximum Temperature+85°C
MTBF2000 (Minimum)kh
Load Regulation±0.6%
Line Regulation±0.4%
Ripple And Noise75mV Pk-Pk
Power Signal Conversion TypeDC-DC
Weight3.8 (Typ.)g
Maximum Input Current1mA
Allowed Circuit ConfigurationsParallel
Switching Frequency Range580 → 780kHz