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ISL8121IRZ
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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 2026-11-05. Confirm live availability and unit price via RFQ before placing a PO.

ISL8121IRZ

BUCK REGULATOR POSITIVE OUTPUT S
Renesas Electronics Corporation · DC DC Switching Controllers · BOM Matching
Mfr. Part Number
ISL8121IRZ
Manufacturer
Renesas Electronics Corporation
Package / Case
24-VFQFN Exposed Pad
Datasheet
Datasheet
Description
BUCK REGULATOR POSITIVE OUTPUT S
RoHS Status
Lead Free / RoHS Complaint
Availability
Sourcing — Lead time quoted on request (often 3–15 business days by channel)
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ISL8121IRZ
Renesas Electronics Corporation
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In Stock9,804
Unit
Price
$5.47
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Reference Price
QuantityPrice
1$ 5.4700
Prices are for reference only. The final transaction is subject to confirmation.
As of 2026-11-05 · Valid as reference until 2026-11-12 · Request RFQ for live stock.
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Specification Summary

Package / Case
24-VFQFN Exposed Pad
Supplier Device Package
24-QFN (4x4)
Voltage - Supply (Vcc/Vdd)
4.9V ~ 5.5V
Frequency - Switching
150kHz ~ 2MHz
Operating Temperature
-40°C ~ 85°C (TA)
Mounting Type
Surface Mount
Clock Sync
No
Control Features
Current Limit, Enable, Soft Start, Tracking
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 2026-11-05. Confirm live availability and unit price via RFQ before placing a PO.
Lead time FAQ Authenticity FAQ MOQ FAQ
Specifications
Product Description
Purchase & Inquiry
Output Phases
2
Duty Cycle (Max)
66%
Clock Sync
No
Serial Interfaces
-
Control Features
Current Limit, Enable, Soft Start, Tracking
Frequency - Switching
150kHz ~ 2MHz
Number of Outputs
2
Output Configuration
Positive
Synchronous Rectifier
Yes
Topology
Buck
Voltage - Supply (Vcc/Vdd)
4.9V ~ 5.5V
Function
Step-Down
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Output Type
Transistor Driver
Package / Case
24-VFQFN Exposed Pad
Supplier Device Package
24-QFN (4x4)
BUCK REGULATOR POSITIVE OUTPUT S
Brand Introduction
Renesas Electronics Corporation delivers trusted embedded design innovation with complete semiconductor solutions that enable billions of connected, intelligent devices to enhance the way people work and live—securely and safely. A global leader in microcontrollers, analog, power, and SoC products and integrated platforms, Renesas provides the expertise, quality, and comprehensive solutions for a broad range of Automotive, Industrial, Home Electronics, Office Automation and Information Communication Technology applications to help shape a limitless future.
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Buying FAQ — ISL8121IRZ

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

How do I buy ISL8121IRZ from Yingxinyuan?

Open RFQ with quantity and target date, or upload a BOM that includes ISL8121IRZ. 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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