Obsolete & Hard-to-Find Sourcing

Process

Five steps from requirement to delivery

Step 1

Requirement profile

Confirm full part number, quantity, target lead time, destination and application.

Step 2

Targeted sourcing

Source by lifecycle and urgency, recording available quantities and conditions.

Step 3

Information review

Check batch, packaging, appearance, labels and acceptable item condition.

Step 4

Commercial confirmation

Agree price, lead time, payment, delivery and acceptance terms.

Step 5

Delivery coordination

Follow preparation and delivery, communicate exceptions and retain records.

Legacy families

Series we are asked for regularly

Selected ordering codes in these families are discontinued or in the discontinuance process. Availability varies by exact ordering code and must be confirmed during quotation.

Brand / Family	Series	Typical Part Numbers	Status
Intel / Altera	MAX 7000 / 7000S / 7000B	EPM7064LC44-15 · EPM7128EQC100-15 · EPM7128SLC84-10N	Selected ordering codes discontinued; not every suffix
Intel / Altera	FLEX 10K · APEX 20K	EPF10K30BC356-4 · EPF10K10LC84-4 · EP20K100EQC208-3	Selected devices or ordering codes discontinued
Intel	MCS-51 / MCS-96	P80C51BH · P87C51FA · P80C196KB	Original Intel legacy lines; discontinuance notice issued
NXP / Freescale	68HC11	MC68HC711E9CFN2 · MC68HC11A1FN · MC68HC11E1CFN2	Legacy MCU family entered discontinuance process
Intel / AMD	28F StrataFlash · Am29F Flash	TE28F160C3BD70 · JS28F128J3D75 · AM29F040B-70JC	Legacy memory families - verify by full part number
STMicroelectronics	ST62 / ST7	ST62T25C6 · ST72F324BK6T6	Legacy MCU sourcing - verify model by model
Mitsubishi Electric	CM / PM power modules	CM150DY-24H · CM200DY-24NF · PM100DSA120	Verify voltage, current, topology, package and pinout
Fuji Electric	2MBI / 6MBP modules	2MBI100N-060 · 6MBP100RA060	Check module generation, ratings and terminal layout
SEMIKRON	SKM IGBT modules	SKM100GB123D · SKM150GB12T4	Chip technology, package, gate and thermal requirements
Infineon / eupec	FF / BSM power modules	FF150R12KS4 · BSM100GB120DN2	Exact suffix, internal circuit and mounting
Motorola / Freescale	MC68000 / 68HC000	MC68000P10 · MC68HC000FN16	Speed grade, package, temperature and core version
Zilog	Z80 CPU family	Z84C0020PEC · Z84C0010PEG	Clock speed, package and CPU variant
HP / Avago	HDSP intelligent displays	HDSP-2111 · HDSP-2534	Character count, color, package and interface
Sharp / Noritake Itron	Industrial LCD / GU VFD	LM32019T · LM64P101 · GU140X16G-7003 · GU128X64E-U100	Resolution, interface, backlight, voltage and dimensions

Examples are provided for identification and RFQ preparation. Availability and lifecycle status vary by exact ordering code and must be confirmed during quotation.

Recommended RFQ details

What helps us find it faster

Full brand, part number and suffix — equipment or nameplate photos where useful.
Quantity, target price, latest delivery date and destination.
Acceptable year, batch, packaging, condition and environmental requirements.
Whether substitutes, split deliveries or multiple-source quotations are allowed.

Send an RFQ

Key risk discussions

What we put on the table early

Storage, packaging and solderability risks associated with older batches.
Acceptance differences among similar models, pulled parts and refurbished items.
Availability and lead-time changes during market shortages.
Conditions for special inspection, third-party verification or sample approval.

For critical equipment and high-risk applications, validate a sample or small batch before volume purchasing. Inspection items and acceptance criteria should be agreed before ordering.