Texas Instruments LM317DCYR, Voltage Regulator 40V SOT-223 4-Pin

View all Voltage Regulators
Bulk discount available

Subtotal (1 pack of 5 units)*

£3.18

(exc. VAT)

£3.815

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • Plus 605 unit(s) shipping from 05 January 2026
  • Plus 185 unit(s) shipping from 05 January 2026
  • Plus 4,310 unit(s) shipping from 12 January 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
Per Pack*
5 - 20£0.636£3.18
25 - 45£0.602£3.01
50 - 120£0.544£2.72
125 - 245£0.488£2.44
250 +£0.464£2.32

*price indicative

Packaging Options:
RS Stock No.:
661-3627
Mfr. Part No.:
LM317DCYR
Brand:
Texas Instruments
Find similar products by selecting one or more attributes.
Select all

Brand

Texas Instruments

Product Type

Voltage Regulator

Package Type

SOT-223

Mount Type

Surface

Polarity

Positive

Pin Count

4

Standards/Approvals

No

Series

LM317

Length

6.5mm

Width

3.5 mm

Height

1.6mm

Maximum Input Voltage

40V

Minimum Input Voltage

4.2V

Maximum Operating Temperature

125°C

Automotive Standard

No

COO (Country of Origin):
CN

LM117/LM317 Adjustable Voltage Regulators


The Texas Instruments LM117/LM317 series of adjustable three-terminal positive voltage regulators are available with current ratings of 0.1, 0.5 and 1.5A. Output voltage range is from 1.25 V to 37 V and is set by two external resistors. These robust and reliable devices incorporate current limiting, thermal overload protection, and safe operating area protection.

Output Voltage Range: 1.2 V to 37 V

Output Current: 1.5 A (LM317), 0.5 A (LM317M), 0.1 A (LM317L)

Typical line regulation: 0.01%

Typical load regulation: 0.1%

Linear Voltage Regulators, Texas Instruments


A range of fixed and adjustable Linear Voltage regulators from Texas Instruments. The range includes both positive and negative polarity devices with output current ratings from 100mA up to 5A.

Related links