Part Datasheet Analysis

Thought for 3 mins 22 sec

Step 1 - Available part information

I reviewed the part project for SM02B-SHLS-TF(LF)(SN).

Project metadata

Table

Field	Value
MPN	SM02B-SHLS-TF(LF)(SN)
Manufacturer	JST
Description	CONN HEADER SMD R/A 2POS 1MM
Part type	Connectors
Mount	Surface Mount
Package / case code	CONN-SMD
Project datasheet property	Present (`Datasheet URL`)
Schematic terminals	4 total: 1, 2, MP1, MP2

Schematic symbol structure

Table

Symbol terminal	Intended function from project/datasheet context
1	Circuit contact 1
2	Circuit contact 2
MP1	Mechanical / solder tab
MP2	Mechanical / solder tab

Step 2 - Datasheet URL check

A datasheet URL is already set on the part project, so no property update was needed.

Step 3 - Datasheet scan and summary

I scanned the JST datasheet at the existing URL and extracted the key metadata below.

Datasheet identity

Table

Item	Value
Series	SHL series
Specific header	SM02B-SHLS-TF(LF)(SN)
Connector style	SMT side-entry header
Positions	2
Pitch	1.0 mm
Packaging style	Embossed-taping
Mounting type	Normal type
Mounting height	1.8 mm

Electrical characteristics

Table

Parameter	Datasheet value
Current rating	1.0 A AC/DC (AWG #28)
Voltage rating	50 V AC/DC
Contact resistance, initial	20 mΩ max.
Contact resistance, after environmental tests	40 mΩ max.
Insulation resistance	100 MΩ min.
Withstanding voltage	500 VAC for one minute, with no breakdown or flashover

Recommended operating conditions

Table

Parameter	Datasheet value
Operating temperature range	-25 C to +85 C including temperature rise in applying electrical current
Applicable wire range	AWG #32 to AWG #28
Insulation O.D.	0.4 mm to 0.8 mm

Absolute maximum / limiting values

This connector datasheet does not separate a classic semiconductor-style "Absolute Maximum Ratings" table. The limiting published ratings are:

Table

Limit	Datasheet value
Maximum rated current	1.0 A AC/DC
Maximum rated voltage	50 V AC/DC
Dielectric withstand	500 VAC for one minute
Rated temperature range	-25 C to +85 C

Materials and finishes

Table

Item	Datasheet value
Contact	Phosphor bronze
Base contact	Phosphor bronze
Solder tab	Brass
Socket housing	PBT, UL94V-0, natural (white)
Wafer	PA, UL94V-0, natural (ivory)
Header finish option used by suffix family	Copper-undercoated tin-plated
Other finish option noted	Nickel-undercoated gold-plated

Special features

Table

Feature	Datasheet statement
Miniaturization	Ultra-thin design
Mating force	Low insertion force
Durability behavior	Resistance to mating/unmating operation with prying

Pin / terminal description

The datasheet does not provide rich electrical pin names beyond circuit numbering and solder-tab identification.

Table

Terminal	Datasheet meaning
1	No. 1 circuit
2	No. 2 circuit
MP1	Mechanical / solder tab
MP2	Mechanical / solder tab

Package dimensions and PCB pattern data

Table

Parameter	Datasheet value
A dimension	1.0 mm
B dimension	4.8 mm
PCB pattern pitch tolerance	±0.05 mm and shall not accumulate
View convention	PCB layout figure is viewed from the connector mounting side

From the part footprint asset, the implemented pad pattern is:

Table

Footprint pad	Implemented geometry
1	center (-0.500, -2.524) mm, size 0.600 x 1.250 mm
2	center (0.500, -2.524) mm, size 0.600 x 1.250 mm
MP1	center (-1.950, 0.600) mm, size 0.900 x 1.700 mm
MP2	center (1.950, 0.600) mm, size 0.900 x 1.700 mm

Step 4 - Symbol and footprint cross-check Result

I do not see a hard mismatch that would obviously cause incorrect ordering, immediate assembly failure, or a guaranteed board failure.

What matches

Table

Check	Result
Position count	Pass - project has 2 signal contacts plus 2 solder tabs, matching the datasheet structure
Pitch	Pass - signal pads are spaced 1.0 mm center-to-center
Part identity	Pass - project MPN matches the datasheet part
Footprint family	Pass - right-angle SMT 2-position SHL header footprint is consistent with the datasheet
Pin-1 indication	Pass - footprint includes a pin-1 marker and datasheet identifies No. 1 circuit

Issues to flag

Table

Severity	Finding	Why it matters
Medium	The schematic symbol terminals 1, 2, MP1, MP2 all have Pin Type: Unspecified	This is not a manufacturing blocker, but it weakens ERC quality. Mechanical tabs should usually be distinguished from electrical contacts.
Medium	The symbol uses generic terminal objects rather than a connector-specific semantic symbol	Easy for future users to misuse MP1 and MP2 as if they were signal pins.
Medium	Package property is generic: CONN-SMD	This is enough for a custom part project, but not very descriptive for procurement or footprint audit trails.
High attention	Datasheet note says the PCB layout figure is viewed from the connector mounting side	If the footprint was copied without respecting that view convention, left-right mirroring could happen. The current footprint looks plausible, but this is the main thing to verify visually against the datasheet drawing before release.
High attention	Datasheet gives strict PCB pattern pitch tolerance: ±0.05 mm and shall not accumulate	For a 1.0 mm pitch connector, even small pattern drift can cause solderability or mating issues.

My engineering judgment

The part identity and terminal count look correct.
The footprint geometry looks internally consistent for this JST connector family.
The biggest practical risk is orientation / mirror interpretation because the datasheet explicitly states the PCB pattern is shown from the connector mounting side.
The biggest data-model risk is that MP1 and MP2 are not clearly typed as mechanical tabs in the symbol.

Recommended fixes before using this part widely

Table

Priority	Recommendation
1	Verify the footprint against the datasheet land pattern with the mounting-side view convention in mind
2	Change symbol pin types so 1 and 2 are connector contacts, and MP1, MP2 are clearly mechanical/support tabs
3	Make the package/footprint property more specific than CONN-SMD
4	Keep the datasheet-linked MPN exactly as SM02B-SHLS-TF(LF)(SN) to avoid ordering the wrong finish or offset variant

If you want, I can next turn this into a short pass/fail checklist for publishing the part.

Publishing checklist

Review symbol typing

Inspect footprint details

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