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AP503TR-G1 — DPAK / D2PAK (TO-252/263) package (representative)
DPAK / D2PAK (TO-252/263)
Representative of package type
BCD Semiconductor

AP503TR-G1

LDO Regulator · TO-252-2 · Analog
Part Status: Obsolete In demand
Data last refreshed Aug 18, 2026
Manufacturer
BCD Semiconductor
Mfr Part #
AP503TR-G1
Series
AP503
Category
LDO Regulator
Datasheet
View datasheet ↗
Availability & Pricing
Est. market range$0.4 – $1.20
Sourcing channels12
Request a Quote → Check Live Availability

Live pricing on request · most quotes same business day

Product Attributes

Electrical & Parametric
Output Current3A
Dropout Voltage0.3V typ @ 3A
Physical & Thermal
Package / CaseTO-252-2
Mounting TypeSurface Mount
SeriesAP503
Operating Temperature-40°C ~ 125°C
Classification & Lifecycle
CategoryLDO Regulator
TypeAnalog
Part StatusObsolete

3A ultra-low dropout linear regulator

Environmental & Export Classifications

RoHS Status
RoHS Compliant

Availability & Sourcing

12 source rows · masked
SourceMfrQtyDate CodeConditionStatus
Live BCD SEMICONDUCTOR 12000 Live · fresh RFQ
Live BCD 10 19+ Live · fresh RFQ
Live BCD 1 Live · fresh RFQ
Live 7300 Live · fresh RFQ
Live BAOCHUANGDA 3600 Live · fresh RFQ
Live BCD 1148 19+ Live · fresh RFQ
Market BCD SEMICONDUCT 12000 Available RFQ
Market BCD 10 19+ Available RFQ
Market BCD 1 Available RFQ
Market BCD SEMICONDUCT 7300 Available RFQ
Market BAOCHUANGDA 3600 Available RFQ
Market BCD 1148 19+ Available RFQ

ZDI Stock — held in our warehouse · Market — recent offers, sourced on request · Live — fresh from the broker network. Supplier identity and cost are never shown.

Price History & Market Reference

Market Price Range

High$1.20
Low$0.4
Last$0.8
Price as of2026-08-18

ZDI Transaction

ZDI priceQuote on request
Active offers12

Pricing reflects ZDI's transaction and market-reference data. Firm pricing confirmed per RFQ against current availability.

Part Activity

recent searches, RFQs & offers
AP503TR-G1 viewed on the web · Web User
AP503TR-G1 viewed on the web · Web User
AP503TR-G1 searched via the web · Web User
AP503TR-G1 searched via the web · Web User
AP503TR-G1 searched via the web · Web User
AP503TR-G1 searched via the web · Web User
AP503TR-G1 searched via the web · Web User
AP503TR-G1 searched via the web · Web User

Live search & sourcing activity for AP503TR-G1 — real inquiries only.

Engineering FAQ

answers from this part's real data
AP503TR-G1 is marked Obsolete — how does ZDI assure authenticity?
Obsolete and end-of-life parts carry elevated counterfeit risk, which is exactly why ZDI routes every lot through the full EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with source-country supplier vetting and full lot traceability before release.
What are the key specifications of AP503TR-G1?
Output Current: 3A; Dropout Voltage: 0.3V typ @ 3A.
What package is AP503TR-G1 supplied in?
AP503TR-G1 is supplied in the TO-252-2 package, surface mount, rated -40°C ~ 125°C.
Can ZDI source AP503TR-G1 beyond the quantities shown?
Yes — ZD Integrated Circuits specializes in sourcing hard-to-find, obsolete, and excess electronic components through its global network, with counterfeit-avoidance inspection on every lot. Submit an RFQ with your target quantity for availability and pricing.

Documents & Media

Quality & Counterfeit Avoidance

ISO 9001 ERAI Member ESD Certified GIDEP Participant ZDI EQuality Process CAGE Code 1V8K2

ZD Integrated Circuits operates an ISO 9001-certified quality system incorporating JEDEC-standard process-control elements. In an era of global sourcing and internet procurement, standards compliance alone no longer assures component authenticity — so ZDI pioneered a multi-layered counterfeit-avoidance program: supplier analysis at the source-country level, detailed component analysis, defined inspection standards for all incoming devices, and stringent supplier rating and review. These programs let ZDI guarantee the integrity and the source of every component it ships.

Every lot moves through ZDI's EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with Quality-Manager disposition before release. Nonconforming material is quarantined; conforming material is warehoused or shipped.

Multi-stage EQuality Process™ inspection (QI-1 · QI-2/camera · QI-3)
Source-country supplier analysis, rating & review
Incoming inspection, RoHS verification, bake, full lot traceability
ESD-controlled handling · authentic parts guaranteed

AP503TR-G1 is marked Obsolete. Obsolete and end-of-life parts carry elevated counterfeit risk — exactly why ZDI routes them through the full EQuality Process™ with source-country supplier vetting, inspection, and traceability.

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