techmannih/nema34-mounted-stepper-controller

docs/procurement.md

# Procurement snapshot

Exact LCSC-code and package matches only. A fuzzy search result or an unverified package is not accepted as availability evidence. Quantities are for one PCB; stock is a timestamped public catalog snapshot, with the evidence source recorded per row, and is not reserved JLC assembly inventory.

Last complete refresh: 2026-10-14T05:47:21.225Z.

| LCSC | MPN | Qty/board | Stock | References |
|---|---|---:|---:|---|
| [C1779](https://jlcsearch.tscircuit.com/components/list.json?search=1779) | CL21A475KAQNNNE | 1 | 2086671 | C25 |
| [C4184](https://jlcsearch.tscircuit.com/components/list.json?search=4184) | 0603WAF2002T5E | 2 | 7071862 | R26, R33 |
| [C7666](https://jlcsearch.tscircuit.com/components/list.json?search=7666) | SN74LVC1G08DBVR | 4 | 75907 | U4, U10, U11, U33 |
| [C7836](https://jlcsearch.tscircuit.com/components/list.json?search=7836) | SN74LVC1G17DBVR | 1 | 13507 | U37 |
| [C13738](https://jlcsearch.tscircuit.com/components/list.json?search=13738) | X322516MLB4SI | 1 | 159086 | Y1 |
| [C13967](https://jlcsearch.tscircuit.com/components/list.json?search=13967) | CL21B474KBFNNNE | 5 | 275907 | C27, C32, C33, C34, C35 |
| [C14663](https://jlcsearch.tscircuit.com/components/list.json?search=14663) | CC0603KRX7R9BB104 | 34 | 35746590 | C72, C9, C10, C14, C65, C69, C70, C18, C24, C28, C38, C39, C89, C94, C40, C41, C43, C44, C45, C46, C48, C51, C73, C74, C77, C78, C79, C80, C81, C82, C85, C95, C97, C99 |
| [C15725](https://jlcsearch.tscircuit.com/components/list.json?search=15725) | CL10B104KC8NNNC | 7 | 223509 | C1, C12, C63, C20, C29, C31, C61 |
| [C15849](https://jlcsearch.tscircuit.com/components/list.json?search=15849) | CL10A105KB8NNNC | 7 | 7085552 | C2, C13, C64, C88, C93, C42, C75 |
| [C19666](https://jlcsearch.tscircuit.com/components/list.json?search=19666) | CL10A475KO8NNNC | 1 | 2395737 | C26 |
| [C20917](https://jlcsearch.tscircuit.com/components/list.json?search=20917) | AO3400A | 1 | 631358 | Q26 |
| [C21189](https://jlcsearch.tscircuit.com/components/list.json?search=21189) | 0603WAF0000T5E | 2 | 22192573 | R9, R12 |
| [C21190](https://jlcsearch.tscircuit.com/components/list.json?search=21190) | 0603WAF1001T5E | 5 | 18934855 | R55, R117, R118, R123, R126 |
| [C22827](https://jlcsearch.tscircuit.com/components/list.json?search=22827) | 0603WAF1803T5E | 4 | 132716 | R19, R20, R31, R32 |
| [C22859](https://jlcsearch.tscircuit.com/components/list.json?search=22859) | 0603WAF100JT5E | 9 | 5269267 | R38, R39, R42, R43, R46, R47, R50, R51, R68 |
| [C22935](https://jlcsearch.tscircuit.com/components/list.json?search=22935) | 0603WAF1004T5E | 1 | 5133605 | R107 |
| [C22939](https://jlcsearch.tscircuit.com/components/list.json?search=22939) | 0603WAF220KT5E | 1 | 92360 | R34 |
| [C23138](https://jlcsearch.tscircuit.com/components/list.json?search=23138) | 0603WAF3300T5E | 2 | 3051461 | R124, R125 |
| [C23146](https://jlcsearch.tscircuit.com/components/list.json?search=23146) | 0603WAF3603T5E | 1 | 76177 | R27 |
| [C23162](https://jlcsearch.tscircuit.com/components/list.json?search=23162) | 0603WAF4701T5E | 9 | 16865857 | R3, R4, R5, R6, R7, R22, R128, R129, R130 |
| [C23186](https://jlcsearch.tscircuit.com/components/list.json?search=23186) | 0603WAF5101T5E | 2 | 22738109 | R105, R106 |
| [C23345](https://jlcsearch.tscircuit.com/components/list.json?search=23345) | 0603WAF220JT5E | 2 | 7165809 | R71, R72 |
| [C25803](https://jlcsearch.tscircuit.com/components/list.json?search=25803) | 0603WAF1003T5E | 19 | 17938419 | R2, R11, R13, R15, R16, R102, R40, R41, R44, R45, R48, R49, R52, R53, R121, R67, R69, R113, R127 |
| [C25819](https://jlcsearch.tscircuit.com/components/list.json?search=25819) | 0603WAF4702T5E | 2 | 1416293 | R108, R137 |
| [C37593](https://jlcsearch.tscircuit.com/components/list.json?search=37593) | ADS1115IDGSR | 1 | 18899 | U30 |
| [C38523](https://jlcsearch.tscircuit.com/components/list.json?search=38523) | CL10C120JB8NNNC | 2 | 320364 | C49, C50 |
| [C41095](https://jlcsearch.tscircuit.com/components/list.json?search=41095) | MMBT5551LT1G | 1 | 1223039 | Q14 |
| [C45783](https://jlcsearch.tscircuit.com/components/list.json?search=45783) | CL21A226MAQNNNE | 9 | 2546400 | C15, C16, C17, C66, C67, C68, C90, C91, C92 |
| [C51205](https://jlcsearch.tscircuit.com/components/list.json?search=51205) | CL31B475KBHNNNE | 2 | 65156 | C5, C47 |
| [C55266](https://jlcsearch.tscircuit.com/components/list.json?search=55266) | TPS2553DBVR | 1 | 53760 | U28 |
| [C57112](https://jlcsearch.tscircuit.com/components/list.json?search=57112) | 0603B103K500NT | 3 | 4732187 | C83, C84, C98 |
| [C78755](https://jlcsearch.tscircuit.com/components/list.json?search=78755) | BSS123LT1G | 2 | 149886 | Q1, Q5 |
| [C79991](https://jlcsearch.tscircuit.com/components/list.json?search=79991) | M24512-RMN6TP | 1 | 122675 | U3 |
| [C83454](https://jlcsearch.tscircuit.com/components/list.json?search=83454) | SWPA6045S220MT | 2 | 40231 | L1, L2 |
| [C95204](https://jlcsearch.tscircuit.com/components/list.json?search=95204) | RT0603BRD0710KL | 2 | 1296060 | R24, R62 |
| [C96446](https://jlcsearch.tscircuit.com/components/list.json?search=96446) | CL10A106MA8NRNC | 6 | 2329688 | C6, C7, C8, C71, C76, C96 |
| [C99269](https://jlcsearch.tscircuit.com/components/list.json?search=99269) | TMP102AIDRLR | 1 | 33828 | U29 |
| [C105188](https://jlcsearch.tscircuit.com/components/list.json?search=105188) | TLV3201AIDBVR | 2 | 2598 | U13, U14 |
| [C106210](https://jlcsearch.tscircuit.com/components/list.json?search=106210) | CC0603JRNPO9BN221 | 2 | 159043 | C3, C4 |
| [C107137](https://jlcsearch.tscircuit.com/components/list.json?search=107137) | CC0805KRX7R0BB223 | 1 | 117896 | C30 |
| [C111212](https://jlcsearch.tscircuit.com/components/list.json?search=111212) | USBLC6-4SC6 | 1 | 495 | D15 |
| [C114200](https://jlcsearch.tscircuit.com/components/list.json?search=114200) | CSD19534Q5A | 10 | 4600 | Q4, Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13, Q16 |
| [C136970](https://jlcsearch.tscircuit.com/components/list.json?search=136970) | RT0603BRD071K2L | 1 | 2824 | R66 |
| [C137720](https://jlcsearch.tscircuit.com/components/list.json?search=137720) | RC0603FR-0743K2L | 2 | 14968 | R17, R103 |
| [C155214](https://jlcsearch.tscircuit.com/components/list.json?search=155214) | BAV21W-7-F | 1 | 53189 | D18 |
| [C160315](https://jlcsearch.tscircuit.com/components/list.json?search=160315) | B2P-VH(LF)(SN) | 1 | 242787 | J3 |
| [C160317](https://jlcsearch.tscircuit.com/components/list.json?search=160317) | B4P-VH(LF)(SN) | 1 | 55869 | J2 |
| [C170101](https://jlcsearch.tscircuit.com/components/list.json?search=170101) | CL31B225KCHSNNE | 4 | 95256 | C11, C62, C21, C86 |
| [C181970](https://jlcsearch.tscircuit.com/components/list.json?search=181970) | SN74LVC2G66DCUR | 1 | 2091 | U36 |
| [C187836](https://jlcsearch.tscircuit.com/components/list.json?search=187836) | REF3425IDBVR | 1 | 9609 | U12 |
| [C191027](https://jlcsearch.tscircuit.com/components/list.json?search=191027) | UCC27511DBVR | 1 | 5989 | U15 |
| [C201530](https://jlcsearch.tscircuit.com/components/list.json?search=201530) | PCA9538PWR | 1 | 3982 | U35 |
| [C326730](https://jlcsearch.tscircuit.com/components/list.json?search=326730) | RT0603BRD071ML | 1 | 110409 | R63 |
| [C326731](https://jlcsearch.tscircuit.com/components/list.json?search=326731) | RT0603BRD07180KL | 1 | 57 | R60 |
| [C391032](https://jlcsearch.tscircuit.com/components/list.json?search=391032) | FUET-9650B-3V | 1 | 322 | BZ1 |
| [C404027](https://jlcsearch.tscircuit.com/components/list.json?search=404027) | TLV75533PDBVR | 1 | 128245 | U25 |
| [C407954](https://jlcsearch.tscircuit.com/components/list.json?search=407954) | EEUFR1J471 | 2 | 1972 | C22, C23 |
| [C513710](https://jlcsearch.tscircuit.com/components/list.json?search=513710) | CC0805KKX7R0BB224 | 1 | 134527 | C87 |
| [C516354](https://jlcsearch.tscircuit.com/components/list.json?search=516354) | TMC5160A-TA-T | 1 | 15353 | U7 |
| [C705777](https://jlcsearch.tscircuit.com/components/list.json?search=705777) | RT0603BRD07422KL | 1 | 8146 | R23 |
| [C720477](https://jlcsearch.tscircuit.com/components/list.json?search=720477) | TS-1088-AR02016 | 2 | 628741 | SW1, SW2 |
| [C723637](https://jlcsearch.tscircuit.com/components/list.json?search=723637) | RT0603BRD0720KL | 1 | 11692 | R65 |
| [C728583](https://jlcsearch.tscircuit.com/components/list.json?search=728583) | RT0603BRD0716K2L | 1 | 4455 | R61 |
| [C844918](https://jlcsearch.tscircuit.com/components/list.json?search=844918) | CRCW060310K0FKEA | 24 | 614790 | R1, R14, R18, R104, R111, R21, R28, R29, R30, R35, R36, R37, R54, R56, R70, R73, R74, R119, R120, R112, R114, R131, R132, R133 |
| [C861611](https://jlcsearch.tscircuit.com/components/list.json?search=861611) | RT0603BRD079K09L | 1 | 11390 | R122 |
| [C965799](https://jlcsearch.tscircuit.com/components/list.json?search=965799) | XL-1608SURC-06 | 1 | 7597050 | D17 |
| [C1850276](https://jlcsearch.tscircuit.com/components/list.json?search=1850276) | TPS26630RGER | 1 | 62 | U6 |
| [C1858393](https://jlcsearch.tscircuit.com/components/list.json?search=1858393) | LMR36510ADDAR | 3 | 2224 | U5, U22, U34 |
| [C2047110](https://jlcsearch.tscircuit.com/components/list.json?search=2047110) | SRP7050TA-470M | 1 | 657 | L3 |
| [C2060769](https://jlcsearch.tscircuit.com/components/list.json?search=2060769) | INA240A1DR | 2 | 25183 | U31, U32 |
| [C2829190](https://jlcsearch.tscircuit.com/components/list.json?search=2829190) | STM32G0B1CEU6 | 1 | 306 | U16 |
| [C2862245](https://jlcsearch.tscircuit.com/components/list.json?search=2862245) | CSD17484F4 | 2 | 11853 | Q2, Q3 |
| [C2869734](https://jlcsearch.tscircuit.com/components/list.json?search=2869734) | LM66100DCKR | 4 | 28838 | U23, U24, U26, U27 |
| [C2874116](https://jlcsearch.tscircuit.com/components/list.json?search=2874116) | NH-B2020RGBA-HF | 1 | 150730 | D16 |
| [C2984356](https://jlcsearch.tscircuit.com/components/list.json?search=2984356) | AR03BTCX4303 | 1 | 1701 | R64 |
| [C2985721](https://jlcsearch.tscircuit.com/components/list.json?search=2985721) | HoLLR2512-3W-33mR-1% | 2 | 26300 | R109, R110 |
| [C3025063](https://jlcsearch.tscircuit.com/components/list.json?search=3025063) | USB4105-GF-A-060 | 2 | 277 | J1, J10 |
| [C6000508](https://jlcsearch.tscircuit.com/components/list.json?search=6000508) | W25Q32JVSSIM | 1 | 9 | U17 |
| [C6675858](https://jlcsearch.tscircuit.com/components/list.json?search=6675858) | MR12X4701FTL | 2 | 5000 | R134, R135 |
| [C7293210](https://jlcsearch.tscircuit.com/components/list.json?search=7293210) | RN73R1JTTD4991B25 | 1 | 14411 | R25 |
| [C7419996](https://jlcsearch.tscircuit.com/components/list.json?search=7419996) | FRM121WFR005TM | 2 | 534904 | R115, R116 |
| [C7468460](https://jlcsearch.tscircuit.com/components/list.json?search=7468460) | FRQ0603F5100TS | 1 | 259280 | R136 |
| [C42166327](https://jlcsearch.tscircuit.com/components/list.json?search=42166327) | TPS26750SRSMR | 1 | 147 | U2 |
| [C43131250](https://jlcsearch.tscircuit.com/components/list.json?search=43131250) | TPD4S480RUKR | 1 | 2828 | U1 |
| [C49242208](https://jlcsearch.tscircuit.com/components/list.json?search=49242208) | SS10100 | 1 | 641 | D20 |

85 of 85 selected part types (255 placements) had sufficient reported stock for 5 boards. 85 package names matched the pinned expectation. See failed rows before ordering.

## Substitution policy

See `alternatives.json` for checked candidates and whether they are package-compatible, need electrical/thermal review, or require a redesign. No alternative is silently selected. Missing or insufficient exact stock is an order hold; do not infer availability from this generated page.

## External system items

The motor, shaft magnet, 48 V EPR source, 5 A EPR cable, mating harness and braking resistor/heatsink are separate system items. The external braking resistor is load-dependent and remains a system-level sizing and procurement gate.