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LM317 LM317 LM317
Slkor offers alternative replacement - LM317 - for STMicroelectronics LM317T-DGZ 40V, 1.5A Voltage Regulators
VIN(V): 40V
VOUT(V): 1.2V
IOUT(A) : 1.5A
Vdrop(V): 1.25V
Package: TO-220

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Chinese manufacturing processes have undergone years of iteration, resulting in mature and reliable technologies. Many international corporations opt for production outsourcing in China.  As an electronic components manufacturer in China, our products can fully replace those of major international brands in 99% of applications without the need for testing verification. Our products boast high consistency in quality, reasonable pricing, ample inventory, flexible supply, short lead times, and professional after-sales service. 

Slkor alternative equivalents to STMicroelectronics.

STMicroelectronics Slkor Replacements
Part Number Part Number Product Category Package
BTA06-800BWRG BTA06-800B SCR TO-220
BTA08-800BWRG BTA08-800B SCR TO-220
BTA12-600BWRG BTA12-600B SCR TO-220
BTA16-800BWRG BTA16-800B SCR TO-220
BTA24-800BWRG BTA24-800B SCR TO-220
BTA26-800BWRG BTA26-800B SCR TO-3P
BTA41-800BRG BTA41-800B SCR TO-3P
BTA41-1200BRG BTA41-1200B SCR TO-3P
ZMM5V1 ZMM5V1 Zener Diode LL-34
TIP122 TIP122 Darlington Array TO-220
TIP127 TIP127 Darlington Array TO-220
ULN2001D1013TR ULN2001D Darlington Array SOP-16
L4949 SL4949 Linear Regulator SOP-8
LM317 LM317T-DGZ Linear Regulator TO-220
LMV321 LMV321ILT Op-amp SOT-23-5
MMBTA42 MMBTA42 Transistor SOT-23
MMBT4401 MMBT4401 Transistor SOT-23
MMBT5551 MMBT5551 Transistor SOT-23
MMBT5401 MMBT5401 Transistor SOT-23
MMBT3904 MMBT3904 Transistor SOT-23
MMBT3906 MMBT3906 Transistor SOT-23
MMBT2222A MMBT2222A Transistor SOT-23
D44H11 SL44H11 Transistor TO-220-3L


The LM317 is an adjustable 3−terminal positive voltage regulator capable of supplying in excess of 1.5 A over an output voltage range of 1.2 V to 37 V. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Further, it employs internal current limiting, thermal shutdown and safe area compensation, making it essentially blow−out proof. 


● Output current in excess of 1.5 ampere.

● Output adjustable between 1.2V and 37V.

● Intemal thermal overload protection.

● Intemal short-circuit current limiting constant with temperature.

● Output transistor safe-area compensation.

● Floating operation for high voltage applications.

● Elminates stocking many fixed voltages.


The LM317 serves a wide variety of applications including local, on card regulation. This device can also be used to make a programmable output regulator, or by connecting a fixed resistor between the adjustment and output, the LM317 can be used as a precision current regulator.


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