Part Review and Datasheet Verification
Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.
Thought for 5 sec
I’ll inspect the part metadata, find and attach the official datasheet if missing, then compare symbol/footprint/pins against it and summarize any mismatches.
Worked for 7 mins 22 sec
Review complete. The official datasheet URL was already set, so no property update was needed; the part broadly matches SDA05H1SBD with correct 5-position SPST function, 10 terminals, SMT gull-wing metadata, and matching main outline dimensions.
Open items:
- Pin descriptions are missing and pin types are
Unspecified; recommend changing all switch terminals toPassivewith per-position descriptions. - Part Type is generic; recommend
Switchif available. - Pad geometry could not be fully audited from the layout readout, though pad count and outline look correct.
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Part Review: SDA05H1SBD
Date: 2026-07-06
Project: SDA05H1SBD
Official datasheet: https://www.ckswitches.com/media/1327/sda.pdf
Existing Part Metadata
- Manufacturer Part Number: SDA05H1SBD
- Manufacturer Name: Littelfuse
- Description: Dip Switch SPST 5 Position Surface Mount Slide (Standard) Actuator 25mA 24VDC
- Published part UID: 96fa35e0-fc35-4fdd-bccd-47dbef2c7295
- Package or Case Code: DIP
- Mount: Surface Mount
- Designator Prefix: S
- Part Type: Electromechanical Components
- Datasheet URL: already set to official C&K/Littelfuse URL
- Schematic terminals: 10 terminal components: COM_1..COM_5 and NO_1..NO_5
- Footprint: 10 PCB pads plus silkscreen/fab outline nodes
Datasheet Key Specs
Source: C&K / Littelfuse SDA Series Low Profile DIP Switches datasheet, revised 2025-02-06.
- Series: SDA low-profile DIP switches
- Specific ordering code: SDA05H1SBD
- Positions: 5
- Circuit: SPST per switch position
- Termination: S = surface-mount gull-wing
- Actuator: H1 = extended actuator
- Contact material: B = gold
- Seal option: D = none / no top tape seal
- Packaging default: tube; tape-and-reel option exists with R suffix
- Contact rating: 25 mA at 24 VDC or 100 mA at 5 VDC
- Mechanical/electrical life: 1,000 cycles at rated loads
- Contact resistance: 50 mΩ max initial
- Insulation resistance: 100 MΩ between terminals
- Dielectric withstand: 300 VDC min for 1 minute
- Storage temperature: -40 °C to +85 °C
- Operating force: 800 g max
- Materials: PPS housing/cover, PA6T actuator, gold-plated beryllium-copper contacts, gold over nickel-plated brass terminals
- Dim A for SDA05H1SBD: 0.578 in / 14.68 mm
- Body width shown: 0.295 in / 7.49 mm
- Pin pitch along switch length: 0.100 in / 2.54 mm typical
- Row spacing / width-related dimensions shown include 0.366 in / 9.30 mm and 0.409 in / 10.4 mm min envelope-related dimension
Symbol Check
Observed symbol exposes 10 terminal entries arranged as two columns:
- Left side: COM_1..COM_5 with Pin Numbers A1..A5
- Right side: NO_1..NO_5 with Pin Numbers B1..B5
Assessment:
- Pin count matches the 5-position SPST DIP switch: 5 independent SPST switches require 10 external terminals.
- Functional grouping as COM/NO is electrically reasonable for five SPST switch sections, although the datasheet drawing appears to present a generic SPST schematic rather than explicit COM/NO names.
- Pin descriptions are missing/undefined on all terminal entries.
- Pin Type is currently Unspecified on all terminal entries; Passive would be more appropriate for switch terminals.
- Symbol pin positions are consistent with two rows and five switch sections.
Footprint Check
Observed footprint/layout:
- 10 pad nodes exist in the footprint, corresponding to COM_1..COM_5 and NO_1..NO_5.
- Silkscreen/body outline visible from layout flat view is approximately 14.68 mm x 7.49 mm, matching the datasheet values Dim A = 14.68 mm and body width = 7.49 mm.
- Additional silkscreen/courtyard-like outline is approximately 16.68 mm x 12.4 mm.
- Pin-1 marker is present near the lower-left side in the flat layout view.
Limitations:
- The layout inspection output did not expose detailed numeric pad center/size geometry, so I could verify pad count and visible outline dimensions, but not fully confirm every recommended land-pattern pad dimension or spacing.
Mismatches / Recommended Fixes
- Part Type is generic: current value is
Electromechanical Components; recommended value isSwitchif supported by the property taxonomy. - Package or Case Code is
DIP; this is understandable as a DIP switch family, but for manufacturing clarity it should be described as surface-mount gull-wing DIP switch / SDA surface-mount package if a richer package field is available. - Pin Type is
Unspecifiedfor all switch terminals; recommended: set all ten terminals toPassive. - Pin descriptions are missing; recommended descriptions:
- COM_1 / A1: Switch 1 terminal A / common side
- NO_1 / B1: Switch 1 terminal B / switched side
- Continue equivalently through switch positions 2..5.
- Footprint pad geometry could not be fully audited from the available layout readout. Pad count and body outline match; final land-pattern verification should confirm pad center spacing, pad size, and row spacing against the datasheet drawing.
Overall Result
The part is broadly consistent with SDA05H1SBD: correct official datasheet URL, correct 5-position SPST function, correct 10-terminal count, surface-mount mounting metadata, and footprint outline matching the main datasheet dimensions. The main issues are metadata/pin-description quality rather than an obvious electrical pin-count or package-family error.
Existing Part Metadata
Datasheet Key Specs
Symbol Check
Footprint Check
Mismatches / Recommended Fixes
Overall Result
