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UM3429S
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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 2026-11-08. Confirm live availability and unit price via RFQ before placing a PO.

UM3429S

STEP UP DC DC CONVERTER
Union Semiconductor (HK) Limited · Voltage Regulators - DC DC Switching Regulators · BOM Matching
Mfr. Part Number
UM3429S
Manufacturer
Union Semiconductor (HK) Limited
Package / Case
SOT-23-6
Datasheet
Datasheet
Description
STEP UP DC DC CONVERTER
RoHS Status
Lead Free / RoHS Complaint
Availability
Sourcing — Lead time quoted on request (often 3–15 business days by channel)
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UM3429S
Union Semiconductor (HK) Limited
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In Stock6,280
Unit
Price
$0.835
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Reference Price
QuantityPrice
1$ 0.8350
Prices are for reference only. The final transaction is subject to confirmation.
As of 2026-11-08 · Valid as reference until 2026-11-15 · Request RFQ for live stock.
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Specification Summary

Package / Case
SOT-23-6
Supplier Device Package
SOT-23-6
Voltage - Input (Max)
5V
Voltage - Input (Min)
0.5V
Voltage - Output (Max)
5V
Voltage - Output (Min/Fixed)
2.5V
Current - Output
600mA
Frequency - Switching
500kHz
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 2026-11-08. Confirm live availability and unit price via RFQ before placing a PO.
Lead time FAQ Authenticity FAQ MOQ FAQ
Specifications
Product Description
Purchase & Inquiry
Voltage - Input (Min)
0.5V
Current - Output
600mA
Frequency - Switching
500kHz
Number of Outputs
1
Output Configuration
Positive
Synchronous Rectifier
Yes
Topology
Boost
Voltage - Input (Max)
5V
Voltage - Output (Max)
5V
Voltage - Output (Min/Fixed)
2.5V
Function
Step-Up
Mounting Type
Surface Mount
Operating Temperature
150°C (TJ)
Output Type
Adjustable
Package / Case
SOT-23-6
Supplier Device Package
SOT-23-6
STEP UP DC DC CONVERTER
Brand Introduction

Founded in 2001, Union Semiconductor is a fabless integrated circuit design with core beliefs in developing high quality and innovative IC solutions adding value to customers’ electronics equipment worldwide.  Union Semiconductor’s products bridge the analog real world and digital world by detecting, measuring, amplifying, converting power supply and providing protection for electronic circuits.

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Buying FAQ — UM3429S

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

How do I buy UM3429S from Yingxinyuan?

Open RFQ with quantity and target date, or upload a BOM that includes UM3429S. 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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