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L4981B
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We source brand-new parts via original manufacturers, franchised distributors or verified independent channels, with incoming inspection. Channel type is confirmed on your quote.

Contact sales or email [email protected] with MPN and quantity. We reply with stock, ETA and reference pricing — confirm before PO.

Reference price and stock shown as of 2026-10-29. Confirm live availability and unit price via RFQ before placing a PO.

L4981B

IC PFC CTR AV CURR 100KHZ 20DIP
STMicroelectronics · PFC (Power Factor Correction) · BOM Matching
Mfr. Part Number
L4981B
Manufacturer
STMicroelectronics
Package / Case
20-DIP (0.300", 7.62mm)
Datasheet
Datasheet
Description
IC PFC CTR AV CURR 100KHZ 20DIP
RoHS Status
Lead Free / RoHS Complaint
Availability
Sourcing — Lead time quoted on request (often 3–15 business days by channel)
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L4981B
STMicroelectronics
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In Stock5,195
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Price
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Reference Price
QuantityPrice
Prices are for reference only. The final transaction is subject to confirmation.
As of 2026-10-29 · Valid as reference until 2026-11-05 · Request RFQ for live stock.
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Specification Summary

Package / Case
20-DIP (0.300", 7.62mm)
Supplier Device Package
20-DIP
Voltage - Supply
14.5V ~ 19.5V
Current - Startup
100 µA
Frequency - Switching
100kHz
Operating Temperature
-40°C ~ 125°C
Mounting Type
Through Hole
Mode
Average Current
Full specifications are listed below. Need alternates or BOM matching? Read BOM guide · Request a quote
Stock status: Sourcing — Lead time quoted on request (often 3–15 business days by channel)
Shortage / allocation / EOL lines may need longer — ask via RFQ.
Reference price and stock shown as of 2026-10-29. Confirm live availability and unit price via RFQ before placing a PO.
Lead time FAQ Authenticity FAQ MOQ FAQ
Specifications
Product Description
Purchase & Inquiry
Mode
Average Current
Current - Startup
100 µA
Frequency - Switching
100kHz
Mounting Type
Through Hole
Operating Temperature
-40°C ~ 125°C
Voltage - Supply
14.5V ~ 19.5V
Package / Case
20-DIP (0.300", 7.62mm)
Supplier Device Package
20-DIP
IC PFC CTR AV CURR 100KHZ 20DIP
Brand Introduction
STMicroelectronics is a global independent semiconductor company and is a leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivaled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence trends.
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Buying FAQ — L4981B

Answer-first notes for stock, authenticity, lead time and quoting. Marked up as FAQPage.

How do I buy L4981B from Yingxinyuan?

Open RFQ with quantity and target date, or upload a BOM that includes L4981B. We reply with stock, channel note, reference price and ETA.

Is the listed price final?

Prices on the product page are reference only. Confirm unit price, currency and validity via RFQ before placing a PO.

How fresh is the stock figure?

Stock and reference price show an as-of date on the page. Ask for a live confirm — allocation lines can change daily.

How do you source authentic parts?

We source from manufacturers, franchised distributors and verified independents, then inspect incoming lots. See /anti-counterfeit/.

What is a typical lead time?

In-stock lines often ship within 24–48 hours after confirmation. Sourcing / allocation ETAs are quoted per line — see /lead-time-shipping/.
BOM matching · Anti-counterfeit · Lead time & shipping

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