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APT1221S
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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 2026-09-19. Confirm live availability and unit price via RFQ before placing a PO.

APT1221S

OPTOISOLATOR 3.75KV TRIAC 4SOP
Panasonic · Optoisolators - Triac, SCR Output · BOM Matching
Mfr. Part Number
APT1221S
Manufacturer
Panasonic
Package / Case
4-SMD, Gull Wing
Datasheet
Datasheet
Description
OPTOISOLATOR 3.75KV TRIAC 4SOP
RoHS Status
Lead Free / RoHS Complaint
Availability
Sourcing — Lead time quoted on request (often 3–15 business days by channel)
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APT1221S
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In Stock8,553
Unit
Price
$2.13
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Reference Price
QuantityPrice
1$ 2.1300
Prices are for reference only. The final transaction is subject to confirmation.
As of 2026-09-19 · Valid as reference until 2026-09-26 · Request RFQ for live stock.
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Specification Summary

Package / Case
4-SMD, Gull Wing
Supplier Device Package
4-SOP
Voltage - Forward (Vf) (Typ)
1.21V
Voltage - Isolation
3750Vrms
Voltage - Off State
600 V
Current - DC Forward (If) (Max)
50 mA
Current - Hold (Ih)
3.5mA
Current - LED Trigger (Ift) (Max)
10mA
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 2026-09-19. Confirm live availability and unit price via RFQ before placing a PO.
Lead time FAQ Authenticity FAQ MOQ FAQ
Specifications
Product Description
Purchase & Inquiry
Zero Crossing Circuit
No
Voltage - Off State
600 V
Static dV/dt (Min)
500V/µs
Current - LED Trigger (Ift) (Max)
10mA
Current - On State (It (RMS)) (Max)
50 mA
Current - Hold (Ih)
3.5mA
Turn On Time
100µs (Max)
Approval Agency
cUR, VDE
Current - DC Forward (If) (Max)
50 mA
Output Type
Triac
Voltage - Forward (Vf) (Typ)
1.21V
Mounting Type
Surface Mount
Number of Channels
1
Operating Temperature
-40°C ~ 100°C
Package / Case
4-SMD, Gull Wing
Supplier Device Package
4-SOP
Voltage - Isolation
3750Vrms
OPTOISOLATOR 3.75KV TRIAC 4SOP
Brand Introduction
Panasonic Industrial Devices Sales Company of America is the industrial components and electronic devices division of Panasonic Corporation of North America. Panasonic Industrial Devices Sales Company of America provides key components that power the home appliances, consumer electronics, computers, communications, and commercial and healthcare products used by millions of people each day. Our wide offering of high-quality industrial products, global manufacturing, and advanced research and development facilities as well as our commitment to customer service make us a preferred vendor to the world's most famous original equipment manufacturers of high-tech electronic products. From the smallest resistor to the highest technology wireless communications modules, Panasonic offers it all! Choosing Panasonic means more than selecting a name you know and trust. It means choosing the best quality components the industry can offer.
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Buying FAQ — APT1221S

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

How do I buy APT1221S from Yingxinyuan?

Open RFQ with quantity and target date, or upload a BOM that includes APT1221S. 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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