DARPA's Microsystems Technology Office Just Released Six FY26 SBIR Topics Closing June 24 — From Nanopore Proteomics to 800°C Electronics. Why MTO Is the Quiet Heart of the Defense Innovation Pipeline.

When DARPA's Defense Sciences Office and Biological Technologies Office drop SBIR topics, the trade press notices. There is something irresistible about a $250,000 Phase I call to build cognitive sleep wearables, or to compute pathogen-host interactomes from protein sequence alone. Those topics get covered. They get tweeted. They get pitched to investors as evidence that DARPA is "back" in the deep-tech business after the federal funding turbulence of late 2025 and early 2026.

The Microsystems Technology Office gets less attention. Its topics are written in the dense vocabulary of semiconductor fabrication, RF engineering, and materials physics. They do not lend themselves to easy headlines. A topic on "compact wideband tunable filters" does not read, on first glance, like the future of national security. But the small businesses that build the components MTO funds end up in the supply chains for radar, electronic warfare, communications, sensing, and edge AI — and the gap between a working prototype and a fielded system is often a matter of which Phase I awards landed three years earlier.

On May 27, 2026, MTO opened six FY26 SBIR topics under the Department of War's 2026 BAA. All six close at noon Eastern on June 24, 2026 — a four-week window that closes before most small businesses have finished writing proposals for the DARPA DSO topics that opened the same day. The MTO topic set covers nanopore proteomics, RF filters for spectrum-contested electronic warfare, 800°C integrated circuits, passive thermal management for extreme environments, automated radiation-hardening codesign, and a quietly interesting "low resource computing" topic that asks small businesses to reuse DoW hardware instead of selling new boxes. Topic numbers run DPA26BZ01-NV005 through NV009, with the low-resource computing topic on a separate solicitation as DPA26BZ02-DV010.

This piece walks through what each topic is asking for, why it matters in the larger context of MTO's portfolio, and how a small business should triage the four weeks remaining before June 24.

Why MTO Is Different From DSO and BTO

The three DARPA technical offices that have run high-profile SBIR drops over the last six weeks each serve a different role in the defense innovation pipeline.

Defense Sciences Office (DSO) funds early-stage exploratory science — atomic sensors, neurotechnology, novel power sources. Its FY26 SBIR XL drop on June 3 (covered here) leaned into Rydberg-based RF sensing, closed-cycle expeditionary power, and computational biology.

Biological Technologies Office (BTO) funds programs at the intersection of biology and engineering — wearable medical monitoring, synthetic biology, infectious disease countermeasures. Its early-June topics on smart whole-blood transfusion systems, K-9 broadening regimens, and on-demand orthopedic implants (covered here) drew a different applicant pool — medical device startups, regenerative medicine teams, defense biotech.

Microsystems Technology Office sits closer to deployment than either. Its remit is integrated circuits, photonics, MEMS, packaging, and the underlying materials science of microelectronics. The agency's own framing of MTO emphasizes "transition to the warfighter," which in practice means components small enough, rugged enough, and cheap enough to be designed into actual platforms — radios, radars, drones, satellites, missile seekers. MTO Phase II awards routinely land in companies that already have DoD customers and a path to OTA or production contracts.

That changes how a small business should think about an MTO Phase I proposal. The technical bar is higher, but the commercial path is shorter. A Phase I that demonstrates a credible component-level capability has a real chance of pulling Phase II follow-on, Direct-to-Phase-II adjacent topics, and eventually a TACFI or strategic technology insertion. The four-week proposal window is brutal precisely because the pool of capable applicants is small.

The Six Topics, Translated

DPA26BZ01-NV006 — Nanopore Bioelectronics for Next Generation Proteomics

The published scope asks for a "next-generation single-molecule sensing and sequencing platform." In MTO vocabulary, that means solid-state or hybrid biological nanopore arrays capable of resolving individual amino acid residues as a protein threads through the pore — the proteomics analog of nanopore DNA sequencing that Oxford Nanopore commercialized over the last decade. The defense interest is dual: rapid in-theater identification of biological threats from a single protein sample, and field-deployable diagnostics that do not require centralized lab infrastructure.

A credible Phase I proposal here needs three things. First, a specific nanopore architecture — solid-state silicon nitride, MoS2, graphene, hybrid pore-protein scaffolds, or something more exotic. Second, a sensing modality that yields per-residue signal-to-noise above what current state-of-the-art demonstrates. Third, a realistic accounting of the protein preparation chemistry — denaturation, linearization, charge-tagging — that would be required to push proteins through a nanopore at controlled velocity. Teams with nanopore fabrication capability but no prior proteomics work will struggle to clear the technical bar in four weeks.

DPA26BZ01-NV007 — Compact Wideband Tunable Filters

The scope is RF filter technologies that improve spectrum access for DoW communications and electronic warfare systems. Translated: small businesses are being asked to build filters that can dynamically tune across wide frequency ranges while maintaining high selectivity, low insertion loss, and footprints small enough to fit in airborne or handheld platforms. The military RF environment is increasingly congested and contested — the same spectrum being used for friendly comms, adversary jamming, civilian 5G, and emerging satellite constellations — and the filter component is the bottleneck for many of the cognitive radio and electronic warfare concepts the DoW wants to field.

The technical landscape here includes MEMS-based tunable filters, ferroelectric and BST-based tunable capacitors, switched filter banks with phase-change materials, and acoustic resonator filters with electronically tuned coupling. A Phase I proposal needs to commit to one of these technology branches and demonstrate why its tradeoff among tuning range, Q factor, power handling, and size beats the incumbent approaches. Generic "we will explore a tunable filter architecture" responses do not score.

DPA26BZ01-NV008 — Temperature-Hardened Electronics for Reliable Mission-Critical Applications (THERMAL)

The scope is integrated circuit technology that operates up to 800°C. This is not a typo. Commercial silicon CMOS topples around 200°C. Silicon-on-insulator pushes to 300°C in specialized parts. The defense interest in 800°C electronics covers a handful of specific applications — sensors and control circuits inside jet engines, hypersonic vehicle skin, downhole drilling, and certain space-power systems — where the alternative is moving the electronics far enough from the heat source to incur unacceptable mass, latency, or system complexity.

Realistic Phase I responses will lean on wide-bandgap semiconductors (silicon carbide, gallium nitride, aluminum nitride, gallium oxide) and on packaging materials and interconnects that survive sustained operation at the target temperature. The teams positioned to win are those who already have a SiC or GaN-on-substrate process and need DARPA's funding to push from the device level to the integrated subsystem level. A "we will explore high-temperature electronics" proposal from a team with no existing wide-bandgap capability is unlikely to clear technical evaluation.

DPA26BZ01-NV005 — Spreaders for Microsystems with Advanced Thermal Resilience (SMART)

The scope is passive thermal management for extreme environment systems. SMART pairs with THERMAL — the same applications that need 800°C-capable electronics also need to move heat away from microsystems operating in punishing thermal conditions. Passive thermal spreading means heat pipes, vapor chambers, graphene and diamond heat spreaders, lattice-engineered metamaterials, and novel substrate materials that beat copper's thermal conductivity at lower mass.

This is a topic for small businesses that have already published or fielded thermal management technology at the materials level. The Phase I bar is a demonstrable, measured improvement in thermal conductivity, heat flux capacity, or temperature uniformity under conditions that approximate the target application. A team that can describe its measurement infrastructure and prior characterization data has a substantially better shot than a team proposing to start from a literature review.

DPA26BZ01-NV009 — Automated Process for Codesign of Radiation Hardening and Security

This is the most software-heavy MTO topic in the drop. The scope is automation for the codesign of radiation-hardened and security-hardened integrated circuits — meaning EDA tooling, methodology, and verification flows that let designers harden a chip against single-event upsets, total ionizing dose effects, and adversarial side-channel attacks without paying the historical 2x-to-5x area and power penalties of full triple-modular redundancy.

Phase I proposals here are best positioned by small businesses already working in EDA, semiconductor IP, or trusted-foundry verification — particularly those with prior NSF SBIR or DTRA work on rad-hard design methodology. The defense use case is straightforward: space systems, missile electronics, and nuclear command and control all need rad-hard ICs, and the workforce capable of designing them by hand is shrinking. Automation is the only path to maintaining the capability.

DPA26BZ02-DV010 — Low Resource Computing

This topic sits on a separate solicitation (DPA26BZ02 rather than DPA26BZ01) and reads differently from the other five. The scope is reuse of existing DoW hardware assets — meaning instead of selling the government new boxes, the proposer is asked to demonstrate how legacy computing platforms can be repurposed to run modern workloads, including AI inference, sensor fusion, and tactical edge applications.

This is the topic most accessible to small businesses without a wide-bandgap process or a nanopore fab. The technical content can be software-heavy: model compression, quantization, novel scheduling, hardware-software codesign for older FPGAs and DSPs, and creative reuse of platforms the DoW has already paid for. A Phase I proposal here from a startup with embedded systems and AI inference expertise can be competitive even without prior DARPA history.

Why The Topic Mix Tells You Where MTO Is Going

Reading the six topics together produces a sharper picture of MTO's FY26 priorities than reading any one in isolation.

Three of the six (THERMAL, SMART, the radiation-hardening codesign topic) are about pushing microelectronics into harsher environments — higher temperature, higher radiation flux, higher mechanical stress. This is consistent with the DoW's broader pivot toward hypersonics, contested space, and forward-deployed sensing where rear-area electronics are a liability.

Two (the tunable filter and nanopore topics) are about pushing the physical layer of sensing into smaller, more capable, more deployable form factors. The tunable filter topic targets RF; the nanopore topic targets molecular sensing. Both serve the same broader doctrine: distributed sensors that work in the field without depending on a data link to a centralized facility.

The sixth (Low Resource Computing) is the budget-conscious bookend. MTO is acknowledging that even with the FY26 SBIR budget restored and SBIR/STTR reauthorization moving through Congress, the DoW cannot afford to keep buying new platforms for every new mission. Software-heavy reuse of legacy hardware is a hedge against a procurement environment that may stay constrained for the rest of the decade.

For a small business deciding which topic to chase, the matrix is roughly: if you have wide-bandgap semiconductor process capability, go after THERMAL or SMART. If you have RF or photonics IP, go after the tunable filter topic. If you have biological nanopore experience, go after the proteomics topic. If you build EDA or semiconductor IP, go after the codesign topic. If you build embedded AI or edge inference, the low-resource computing topic is the one that does not require fab capacity to compete.

The Four-Week Sprint

The June 24 deadline is unforgiving in part because MTO topics reward depth. A Phase I proposal that lands a $250,000-to-$300,000 award here is expected to demonstrate, in nine months, a component-level result that DARPA program managers will treat as the seed of a much larger Phase II investment. That is a different bar than a typical NSF Phase I, where the threshold is often closer to "is this technically interesting and commercially plausible."

Three weeks is enough time to write a strong proposal for one topic if your team already has the relevant capability. It is not enough time to write strong proposals for multiple topics, and it is not enough time to develop a new capability from scratch. The triage question for any small business looking at the MTO drop is brutal: is there one topic where our prior work is so well-aligned that we can write a credible Phase I with three weeks of effort? If yes, commit. If no, the right move is often to skip the cycle and prepare for the next FY26 SBIR drop later in the calendar year, while building the prior art and customer-discovery record that will make the next cycle winnable.

For Granted readers tracking the broader DARPA SBIR landscape, MTO's June 24 drop is the third major topic release in a four-week window — joining DSO's June 3 XL topics (deadline July 22) and BTO's earlier June 3 deadline. Together they describe a DARPA SBIR portfolio that is fully back online after the FY26 funding turbulence, and they signal that the agency is prepared to fund deep-tech small businesses across the full microelectronics, biotech, and basic-science stack. The window to compete is open. It does not stay open long.

Cross-reference: Granted News tracks individual topic releases as they hit sam.gov. For the strategic landscape on DARPA's two other June drops, see the DSO analysis and BTO analysis.