DMSMS Obsolescence Management: Diminishing Manufacturing Sources Solutions for Buyers
For DMSMS obsolescence management, we run a BOM health check that flags discontinued, sole-source and at-risk lines, then source the fix you choose: lifetime or bridge buys, authorized aftermarket parts, approved alternates or a new build-to-print source. Send your BOM with manufacturer part numbers, quantities, annual demand and remaining program life.
Updated
DMSMS obsolescence management: where we fit
DMSMS obsolescence management is the ongoing work of finding parts and materials that are going out of production before they stop your program, and picking the cheapest fix while there is still time to choose. We help on the sourcing side: a BOM health check that flags lifecycle and supply risk line by line, and then the buys and new sources that resolve what it finds.
DMSMS stands for diminishing manufacturing sources and material shortages. The DoD's Defense Standardization Program Office (DSPO) describes DMSMS management as a multidisciplinary process: prepare the program infrastructure, identify issues from obsolescence, loss of sources or material shortages, assess the impact on schedule and readiness, analyze the options, and implement the most cost-effective resolution. DSPO adds that it is a process that never ends, which matches what every sustainment buyer already knows.
To be plain about scope: we are a sourcing service, not a DMSMS analytics vendor and not your program's DMSMS management team. We do not own a predictive obsolescence database or hold any DoD designation. What we bring is the legwork: checking manufacturer status, finding authorized stock for life-of-need buys, locating aftermarket manufacturers, and matching mechanical and electronic items to qualified suppliers who can build or replace them, with your requirements flowed down.
The DoD guidance: DoDI 4245.15, DoDM 4245.15 and SD-22
DoD's DMSMS policy sits in DoD Instruction 4245.15, signed in November 2020, with detailed procedures in DoD Manual 4245.15 from October 2022 and best practices in the SD-22 guidebook. If you sell into a DoD program, these are the documents your customer's DMSMS plan is written against.
| Document | What it does | Date shown in DSPO's April 2024 briefing |
|---|---|---|
| DoDI 4245.15, DMSMS Management | Establishes policy and assigns responsibilities | November 2020 |
| DoDM 4245.15, Management of DMSMS | Prescribes detailed procedures | October 2022 |
| SD-22, DMSMS: A Guidebook of Best Practices and Tools for Implementing a DMSMS Management Program | Best practices for running a program, including resolution options and their costs | May 2022 (DSPO's DMSMS page lists a later update; confirm the current edition) |
| SD-26, DMSMS and Parts Management Contracting Guidance | Contract language for DMSMS and parts management requirements | June 2023 |
| SD-19, parts management guidance | Parts management practices that reduce DMSMS exposure at design | Listed as a companion guide |
For a buyer at a prime or sub, the most practical of these is SD-26, because it shows the kind of DMSMS reporting and parts management language that can end up in your contract and then flow down to your suppliers. Read the current versions on the DSP site rather than a copy forwarded from another program.
Have a part like this?Send it in under a minute. A person replies within 1 business day.Proactive vs reactive DMSMS management
Proactive DMSMS management finds the problem while every resolution is still open; reactive management finds it when the part can no longer be bought and only the expensive options are left. The parts are the same; the difference is the window of time.
DSPO's 2024 briefing draws it as two timelines. In the reactive case, an item goes obsolete without the program knowing, the program discovers it at the next buy, and there is a brief window with limited and likely higher cost resolution types. In the proactive case, the program learns that an item will be obsolete as of a given date and has a long window in which all or most resolution types are available at lower cost.
The same briefing shows a set of 8,358 cases where 99.3 percent were resolved without redesign, mostly by finding no real issue, using a simple substitute, or making a life-of-need buy. That is one program's data set, not a promise, but it shows why early detection pays: the cheap answers only exist while there is still stock and still a manufacturer to talk to.
Resolution options, from cheapest to most work
Every DMSMS issue ends in one of a small set of resolutions, and the job is to pick the lowest-cost one that still meets form, fit, function and qualification. The SD-22 guidebook groups them by type; the table below uses the names buyers will see in practice.
| Resolution | What it means | Watch for |
|---|---|---|
| Existing stock | Use program, depot or customer inventory already on hand | Storage history, shelf life and records |
| Alternate or simple substitute | A part that is already approved or is a drop-in with no change to the design | Engineering approval still required; check the alternate is not also near end of life |
| Complex substitute | A part that works but needs testing, a drawing change or minor rework | Qualification cost and schedule |
| Lifetime or life-of-need buy | Buy enough to cover the remaining program demand | Demand forecast, attrition, yield, storage cost and funding at the moment of the buy |
| Bridge buy | Buy enough to cover the gap until a longer-term fix, such as a redesign or new source, is in place | The longer-term fix slipping past the bridge quantity |
| Authorized aftermarket manufacturer | A maker producing the part under contract with, or with written authority from, the original component manufacturer | Confirm the authority in writing; the part is still made to the original design data |
| Emulation | A new part built to match the form, fit and function of the original, typically for electronics | Test and qualification effort |
| New source or build to print | A qualified shop builds the item from existing technical data | Data rights, first article and process approvals |
| Redesign | Change the next higher assembly, or replace the system | The most cost and schedule, which is why it should be the last choice |
For electronic parts on defense contracts, DFARS 252.246-7008 treats an authorized aftermarket manufacturer as an authorized supplier, which is why that route is safer than buying old stock from an unknown broker. Our obsolete parts cost page covers the cost side of these options, and reverse engineering covers the case where no data exists.
PDN and EOL notices: the first warning
A product discontinuance notice (PDN), also called an end of life (EOL) notice, is the manufacturer telling you a part is going away and giving a last time buy date. It is the single most useful DMSMS signal, and the one most often lost in someone's inbox.
Several semiconductor manufacturers state in their notices that they follow their own discontinuation policy along with JEDEC JESD48, the industry standard for product discontinuance. The last-order window and last delivery date come from each manufacturer's policy and are stated in the notice, so read the notice itself rather than assuming a standard period. Product change notices (PCNs) matter too: a die shrink, a fab move or a material change can be a reason to requalify even if the part number does not change.
Practical rules: subscribe to notices at the manufacturer for every active part on your BOM, route them to one owner, and log the response date. A notice that arrives after the last time buy date has already cost you the cheapest options.
GIDEP and DMSMS notices
GIDEP, the Government-Industry Data Exchange Program, is where DoD directed DMSMS and discontinuance information to be shared, alongside reports on nonconforming and suspect counterfeit items. If you support a DoD program and you are not screening GIDEP, you are relying on luck.
DoD designated GIDEP as its centralized database for sharing DMSMS information, and membership is free to U.S. and Canadian government agencies and their industry partners. DSPO's guidance tells program offices to share DMSMS cases with GIDEP. On the quality side, FAR 52.246-26 requires covered contractors to screen GIDEP reports and to report counterfeit or suspect counterfeit items and certain nonconforming items. For a buyer, that means two habits: check GIDEP for DMSMS and discontinuance notices on your critical parts, and check it for problem reports before buying any obsolete part from outside authorized channels. Our counterfeit parts avoidance page explains the reporting side.
Getting ahead of it with a BOM health check
A BOM health check takes your parts list and marks each line by lifecycle status, number of sources and supply risk, so you see the problems while the cheap resolutions are still available. It is the simplest way for a program without a full DMSMS team to move from reactive to proactive.
What we look at on each line:
- Lifecycle status. Active, not recommended for new design, last time buy announced, or discontinued, from the manufacturer's own notices and status pages where published.
- Source count. Sole-source items, including machined and fabricated parts tied to one shop, are flagged even when they are technically active.
- Authorized availability. Whether authorized distribution actually carries the part, as opposed to it only appearing at brokers.
- Specification status. Whether a governing mil spec or standard has been cancelled, made inactive for new design or superseded.
- Material exposure. Specialty alloys, forgings and castings with few sources, where a material shortage is as disruptive as an obsolete chip.
The output is a ranked list: lines that need action now, lines to watch, and lines that are fine. For each line that needs action we suggest the likely resolution and can quote it. Our BOM sourcing page covers how we quote and consolidate a mixed parts list once you decide what to buy.
Lifetime buys: getting the quantity right
A lifetime buy is only cheap if the quantity is right. Too few and you are back in the same position later with no manufacturer left; too many and you are paying to store parts nobody uses.
Build the quantity from the remaining program life and demand per year, plus spares, expected attrition and test failures, plus yield losses in your own assembly process. Then add the cost of storing it: controlled storage for moisture-sensitive devices, shelf-life limits for elastomers and adhesives, and periodic inspection. Confirm the stock is from the manufacturer or authorized distribution with the manufacturer's certificate, because a lifetime buy from an unverified source just moves the counterfeit risk into your warehouse.
Mechanical parts and materials are DMSMS too
DMSMS is not only electronics. Castings whose tooling has been scrapped, forgings from a single closed forge shop, out-of-production fasteners, and specialty alloys with long mill lead times all stop programs the same way an obsolete chip does.
For these, the resolution is usually a new source building to the existing data, which needs the technical data package, a qualified shop and often a first article. Our build to print page covers that path, and our obsolete parts hub covers buying out-of-production items safely.
What goes wrong, and how we prevent it
- Notices nobody reads. We flag items with announced discontinuance in the health check and give you the last time buy date where the manufacturer publishes one.
- Alternates that are also dying. We check the status of a proposed substitute before recommending it.
- Broker stock sold as a lifetime buy. We source life-of-need quantities from the manufacturer, authorized distribution or an authorized aftermarket maker first, and flag anything else for your approval with testing.
- Mechanical sole sources missed. We flag single-shop machined and fabricated parts, not only electronics.
- Requirements lost on the new source. We flow down your drawing, spec revisions, first article and certification requirements to whoever builds the replacement.
What to send with your request
- The BOM with manufacturer name and full manufacturer part number for every line, plus your internal part number
- Quantity per assembly, annual demand, and the remaining program or support life
- Next higher assembly for each line, so redesign impact can be judged
- Approved alternates already on your drawings or source control documents
- Any PDN, EOL or PCN notices you already hold, and any GIDEP notices you have screened
- Contract clauses that apply, such as DFARS 252.246-7008 for electronic parts
- Drawings and specifications for mechanical lines, sent under NDA
Request a BOM health check
Send your BOM through the obsolescence request form and say whether you want the health check alone or quotes for the resolutions too. A person replies within 1 business day. When you buy, you get one quote, one PO and one contact across all the lines, and every order ships with a certificate of conformance plus the traceability documents your request calls for. If the BOM or drawings are export controlled, read controlled programs before sending, and see confidentiality for how files are handled.
Send the job. A person replies within 1 business day.
Part, quantity and date are enough to start. Drawings and the mutual NDA follow by reply, and controlled programs never send technical data through this site.
We have it.
Reference . A person replies within 1 business day. Watch for our email from [email protected].
Questions
What is the difference between DMSMS and obsolescence?
Obsolescence usually means a part is no longer made. DMSMS is wider: diminishing manufacturing sources and material shortages also covers a part that is still made but by one remaining source, a material that is hard to get, or a process that is disappearing. The DoD uses DMSMS because a sole-source casting or a scarce alloy can stop a program just as surely as a discontinued chip, and both are managed with the same identify, assess and resolve steps.
What is SD-22?
SD-22 is the DoD's DMSMS guidebook, published through the Defense Standardization Program Office. It lays out best practices for setting up and running a DMSMS management program, including how to identify and assess issues and the resolution options available, with information on their costs. It sits below DoD Instruction 4245.15 and DoD Manual 4245.15, which set policy and procedures. Check the DSP site for the current edition, since the guidebook has been updated over time.
Is a lifetime buy always the cheapest resolution?
No. It is often cheap in engineering terms because nothing changes on the design, but you pay up front for the whole remaining demand and for storage, and the quantity depends on forecasts that can be wrong. A drop-in substitute can cost less if one exists. A lifetime buy makes most sense when the program end is known, demand is stable and the part stores well under controlled conditions.
What is an authorized aftermarket manufacturer?
Under DFARS 252.246-7008, an authorized aftermarket manufacturer is an organization that makes a part under a contract with, or with the express written authority of, the original component manufacturer, based on that manufacturer's design data. Parts from such a maker count as coming from an authorized supplier under that clause, which is why the route is safer than buying aged stock from a broker with no trace.
How often should a BOM health check be repeated?
Often enough that a discontinuance notice cannot pass its last time buy date before you see it. Many programs review lifecycle status on a regular cycle and also react to each new notice as it arrives. The right interval depends on how many lines are near end of life and how long your requalification takes. A BOM full of mature electronics needs closer watching than one made mostly of machined parts to your own drawings.
Do you provide DMSMS predictive data or a monitoring tool?
No. We do not sell an obsolescence database or a monitoring subscription. We do a sourcing-led BOM health check using manufacturer notices and status information, authorized distribution availability and specification status, then quote the resolutions you choose: life-of-need buys, authorized aftermarket parts, alternates you approve, and new sources for mechanical items. If your program already uses a DMSMS tool, send its output and we start from there.
Related
Sources
- DSPO via NDIA: DMSMS and Parts Management Programs briefing, DLA Supply Chain Alliance Conference, April 23, 2024
- DoD Instruction 4245.15, DMSMS Management (November 5, 2020)
- DoD Manual 4245.15, Management of DMSMS
- Defense Standardization Program: DMSMS program page (SD-22 and related guidance)
- NASA OSMA: GIDEP overview
- Acquisition.gov: FAR 52.246-26 Reporting Nonconforming Items
- Acquisition.gov: DFARS 252.246-7008 Sources of Electronic Parts (Jan 2023)
- NXP: example product discontinuance notice citing JEDEC JESD48
Ready to
source it?
A person replies within 1 business day. NDA first.
Request a quote