JY01 Part Review


Yes — the overall pin mapping and footprint look broadly plausible, but I would flag a few review issues rather than approving it cleanly.
1. Pin mapping check
Given datasheet table:

Table


PinDatasheet name/functionCurrent symbol terminalAssessment
1Brak / brake control / application setting / start torque adjustmentFO/ELLikely mismatch / needs clarification
2Is / current feedbackISOK
3Vss / 0 VGNDOK, acceptable alias
4Vdd / 5 VVDDOK
5Z/F / CW-CCW directionZ/FOK
6M / speed signal outputMOK
7AT / MA top drive outputATOK
8AB / MA bottom drive outputABOK
9BT / MB top drive outputBTOK
10BB / MB bottom drive outputBBOK
11CT / MC top drive outputCTOK
12CB / MC bottom drive outputCBOK
13Ha / Hall AHAOK
14Hb / Hall BHBOK
15Hc / Hall CHCOK
16VR / speed control inputVROK
Main issue: pin 1
The current symbol has pin 1 = FO/EL, while the JY01 V3.5 English datasheet pin table says pin 1 = Brak.
That is the largest likely mismatch.
I would not treat FO/EL as a harmless synonym unless you have another authoritative source for this exact JY01 variant showing pin 1 as FO/EL. In common BLDC-controller-board terminology, EL often means enable, and FO may mean fault output or fan output depending on context, but the JY01 datasheet pin 1 is specifically described as a brake/application/start-torque-related control pin, not as an enable/fault terminal.
Recommended symbol name for pin 1:
  • Prefer: BRAK
  • Or: BRAK / BRK
  • Or if you want to preserve alternate naming: BRAK / EL? only if supported by another source
  • Avoid approving as plain FO/EL without evidence
So for a Flux part review, I would flag pin 1 as:
“Pin 1 terminal name/function likely incorrect: symbol says FO/EL, datasheet says Brak / brake control. Please rename or justify alias.”
2. Footprint compatibility
Footprint: SOIC127P600X175-16N
This decodes approximately as:
  • SOIC/SOP
  • 1.27 mm pitch
  • 6.00 mm body width / nominal package width class
  • 1.75 mm max/nominal height
  • 16 leads
  • Gull-wing SOIC/SOP style
For a device described as SOP16, this is plausible. Many Chinese datasheets use “SOP16” generically for what CAD libraries call SOIC-16 wide-ish/narrow-ish SOP with 1.27 mm pitch.
However, I would not call it fully guaranteed unless the JY01 mechanical drawing gives matching dimensions. The key dimensions to verify are:
  • Pin pitch: likely 1.27 mm
  • Lead count: 16
  • Body width: likely around 3.9 mm or 6.0 mm depending on SOP variant terminology
  • Overall lead span: often around 6.0 mm for narrow SOIC/SOP-16, or larger for wide SOP
  • Body length: around 9.9–10.0 mm for SOIC/SOP-16
  • Height: around 1.75 mm
The footprint name SOIC127P600X175-16N suggests a standard JEDEC-style SOIC-16 narrow footprint with 1.27 mm pitch and about 6 mm overall span. If the datasheet merely says “SOP16” without a detailed package drawing, this footprint is a reasonable default, but it should be marked as plausible, not independently proven.
Review note:
“Footprint is plausible for SOP16, but confirm against manufacturer mechanical drawing if available. SOP16 can be ambiguous across suppliers.”
3. Manufacturer naming: CrossIC vs Shanghai JUYI / Juyi Tech
This also deserves a flag.
The product information appears to identify the device as JY01 by Juyi Tech / Shanghai JUYI Tech. CrossIC appears to be a distributor, catalog site, or reseller listing the part, not necessarily the silicon manufacturer.
So if the Flux part has:
  • Manufacturer: Crossic or CrossIC
that is probably not ideal. It should more likely be:
  • Manufacturer: Juyi Tech
  • Or Shanghai JUYI Tech
  • Supplier/distributor/source: CrossIC, if you want to preserve where it was found
Recommended review flag:
“Manufacturer should likely be Juyi Tech / Shanghai JUYI Tech, not CrossIC, unless CrossIC is intentionally being used as supplier rather than manufacturer.”
4. Other subtle checks
A few additional sanity checks:
Power pin naming
Datasheet uses:
  • Vdd = 5 V
  • Vss = 0 V
Symbol uses:
  • VDD
  • GND
That is acceptable. But the part properties should specify operating voltage as 4.5–5.5 V or nominal 5 V, not a motor bus voltage.
Output pin electrical type
Pins AT, AB, BT, BB, CT, CB are “drive outputs” for external power stage / gate-driver interface, not motor phase power outputs themselves. The symbol should not imply these pins directly drive the motor windings unless the JY01 is being represented as a whole controller module. For the IC, they are logic/control outputs.
Hall/sensorless description
The product page saying Hall/sensorless is consistent with the JY01 marketing/datasheet descriptions. The existence of Hall pins HA/HB/HC is not contradictory; sensorless operation likely uses application-specific configuration.
Pin 6 M
Pin 6 M as “speed signal output” is plausible. It should probably be typed as output, not input.
Pin 16 VR
Pin 16 VR is an analog speed-control input. If terminal metadata exists, it should be input/analog, with range 0–2.5 V or 0–5 V depending on configuration/application.
Conclusion
I would summarize the part review as:
Plausible with corrections required.
The 16-pin ordering from pins 2–16 matches the JY01 V3.5 datasheet well, and the SOIC127P600X175-16N footprint is a plausible SOP16 footprint. The two main things to flag are:
  1. Pin 1 mismatch: current symbol says FO/EL, while datasheet says Brak / brake control. This should be corrected or justified with a second authoritative source.
  2. Manufacturer mismatch: CrossIC is likely a catalog/distributor/source; manufacturer should likely be Juyi Tech / Shanghai JUYI Tech.
I would not reject the footprint outright, but I would mark it as needs mechanical confirmation if no package drawing is attached.
Created a project doc

JY01 Part Review

View Document

Date: 2026-07-23 Reviewed available part metadata, schematic symbol terminal data, PCB footprint, and datasheet-derived specifications for t...
Reviewed the JY01 metadata, datasheet, symbol pins, and SOP16 footprint; I created the full report here: JY01 Part Review.
Key flags: pin 1 is likely mislabeled FO/EL vs datasheet Brak, manufacturer is likely Shanghai JUYI Tech rather than Crossic, and all pin types/descriptions are currently unspecified. The footprint is plausible for SOP16, but exact package dimensions should be confirmed if available.
Fix metadata issues
Rename pin 1
Update manufacturer
Add pin metadata
Check package drawing

IS
Pin Number
2
AT
Pin Number
7
M
Pin Number
6
BB
Pin Number
10
HB
Pin Number
14
CB
Pin Number
12
HC
Pin Number
15
VDD
Pin Number
4
HA
Pin Number
13
VR
Pin Number
16
Brak
Pin Number
1
CT
Pin Number
11
AB
Pin Number
8
Z/F
Pin Number
5
GND
Pin Number
3
BT
Pin Number
9
Name
Pin #
Type
Part Type
Terminal Order
Brak
1
Unspecified
Terminal
IS
2
Unspecified
Terminal
GND
3
Unspecified
Terminal
VDD
4
Unspecified
Terminal
Z/F
5
Unspecified
Terminal
M
6
Unspecified
Terminal
AT
7
Unspecified
Terminal
AB
8
Unspecified
Terminal
BT
9
Unspecified
Terminal
BB
10
Unspecified
Terminal
CT
11
Unspecified
Terminal
CB
12
Unspecified
Terminal
HA
13
Unspecified
Terminal
HB
14
Unspecified
Terminal
HC
15
Unspecified
Terminal
VR
16
Unspecified
Terminal

JY01

JY01 thumbnail