Part Audit Review
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 12 sec
I’ll audit the part metadata, source the official datasheet if needed, verify symbol/footprint/pin details against it, and update the Datasheet property when missing.
Worked for 6 mins 51 sec
Created a project doc
NZ2520SDA Part Audit
Audit of the current Flux part metadata, schematic symbol, terminal descriptions, and PCB footprint against NDK's current official NZ2520SDA...
Audit complete. The 4-pin symbol and 1.0 × 1.0 mm pad footprint match NDK’s land pattern, but pin types/descriptions and several metadata fields are missing; the stored datasheet is also older (20–50 MHz) than NDK’s current revision (20–54 MHz). No Datasheet property was changed because one was already set.
Full findings: NZ2520SDA Part Audit.
Fix metadata and review
Update datasheet URL
Add pin metadata
Add part properties
Run part review
Refine this doc
Ask about this doc
NZ2520SDA Part Audit
Scope
Audit of the current Flux part metadata, schematic symbol, terminal descriptions, and PCB footprint against NDK's current official NZ2520SDA datasheet, Document No. NDKT02-00008-003.
Official datasheet: https://www.ndk.com/en/products/upload/lineup/pdf/NDKT02-00008_en.pdf
Current stored Datasheet URL: 46ce21ede38b10fd9a046af95e413f103d49dba0039e1fc18343a1c9fb9fb662.pdf
Current Part Information
Table
| Field | Current value | Audit |
|---|---|---|
| MPN | NZ2520SDA | Correct |
| Manufacturer | NDK | Correct; full manufacturer is Nihon Dempa Kogyo Co., Ltd. |
| Part Type | Crystals and Oscillators | Broad but acceptable; more specifically an SPXO crystal clock oscillator |
| Description | Project description: Ultra Low Phase Noise Crystal Clock Oscillator; no stored part description property found | Functionally correct, but metadata is incomplete |
| Package / case property | Not set | Missing; datasheet package is 2.5 x 2.0 x 0.9 mm SMD, 4 pads |
| Pin count | 4 terminals / 4 pads | Correct, but no explicit pin-count property was found |
| Datasheet URL | Present, user-uploaded PDF | No update required by the request; the current official NDK URL is listed above |
| Designator prefix | Y | Correct for oscillator/crystal devices |
| Frequency property | Not set | Missing; model family supports 20 to 54 MHz in the current datasheet. A purchasable ordering item also requires a specific frequency and voltage/specification number. |
| Operating voltage property | Not set | Missing; available nominal options are 1.8, 2.5, 3.0, and 3.3 V |
| Operating temperature property | Not set | Missing; -40 to +85 degC |
| Output type property | Not set | Missing; CMOS |
Key Datasheet Specifications
Table
| Parameter | Specification |
|---|---|
| Device type | SPXO crystal clock oscillator, ultra-low-phase-noise type |
| Frequency range | 20 to 54 MHz |
| Supply options | 1.8 V +/-0.18 V; 2.5 V +/-0.25 V; 3.0 V +/-0.3 V; 3.3 V +/-0.33 V |
| Output | CMOS |
| Overall frequency tolerance | +/-50 ppm |
| Operating temperature | -40 to +85 degC |
| Storage temperature | -55 to +125 degC |
| Operating current | 15 mA max at 25 degC |
| Standby current | 35 uA max at 25 degC |
| Output levels | VOL = 0.9 VCC |
| Rise/fall time | 6 ns max |
| Duty cycle / symmetry | 40% to 60% |
| Load capacitance | 15 pF max |
| Startup time | 4 ms max |
| Standby behavior | Pin 1 high or open: operating; low: output high impedance |
| Typical phase jitter | 43 fs, 12 kHz to 20 MHz integration, at 49.152 MHz and 3.3 V |
| Package | 2.50 +/-0.10 x 2.00 +/-0.10 mm; 0.9 mm max height; approx. 0.02 g |
| MSL | Level 1 |
| Recommended bypass | Approx. 0.01 uF from VCC to GND, close to device |
Symbol and Pin Cross-Check
Table
| Pin | Current name | Datasheet function | Result | Recommended pin type / description |
|---|---|---|---|---|
| 1 | STAND-BY | STAND-BY | Correct name and number | Input; Standby control: high or open enables oscillation, low places output in high impedance |
| 2 | GND | GND | Correct name and number | Ground/Power; Ground |
| 3 | OUTPUT | OUTPUT | Correct name and number | Output; CMOS clock output; high impedance in standby |
| 4 | VCC | VCC | Correct name and number | Power; Positive supply, 1.8/2.5/3.0/3.3 V option |
Symbol findings
- Pin numbering and functional names match the datasheet exactly.
- All four terminals currently have
Pin Type: Unspecified; this is incomplete and weakens ERC checking. - No
Pin Descriptionvalues were found. Adding datasheet-backed descriptions would improve usability. - Symbol placement is logically readable: supply/control on the left and output/ground on the right, although conventional power-at-top/ground-at-bottom organization could be clearer.
Footprint Cross-Check
Datasheet recommended land pattern
- Four 1.0 x 1.0 mm lands.
- Land center spacing: 1.65 mm horizontally and 1.25 mm vertically.
- Package body: 2.5 x 2.0 mm.
- Pin-1 orientation follows the datasheet top-view convention.
Current footprint
- Four rectangular SMD pads, each 1.0 x 1.0 mm.
- Pad centers at +/-0.825 mm and +/-0.625 mm, giving exactly 1.65 x 1.25 mm spacing.
- Fabrication outline is 2.5 x 2.0 mm.
- Pin-1 marker and pad numbering/orientation are consistent with the datasheet/KiCad coordinate convention.
Footprint result
The functional copper geometry matches the NDK recommended land pattern. No pad-size, pitch, pad-count, or pin-orientation mismatch was found.
Non-datasheet footprint quality observations
- The imported footprint text uses 1.27 mm font and 0.254 mm stroke centered on a 2.5 x 2.0 mm package; the visible reference can crowd or overlap the component area. This is a silkscreen/readability issue, not an electrical or land-pattern mismatch.
- The footprint asset is named
NZ2520SD.kicad_modrather thanNZ2520SDA; geometry is compatible, but the naming is less specific than the MPN.
Mismatches and Risks
Confirmed mismatches / incomplete data
- The stored uploaded datasheet appears to be an older revision stating a 20 to 50 MHz range, while NDK's current official datasheet NDKT02-00008-003 states 20 to 54 MHz.
- Pin electrical types are all
Unspecifiedinstead of Input, Output, Ground, and Power. - Pin descriptions are absent.
- Explicit package/case, frequency, operating voltage, operating temperature, and CMOS output metadata are absent.
NZ2520SDAis a configurable model family rather than a complete orderable variant by itself. A final BOM item should identify the exact frequency and NDK specification number: NSC5083A (1.8 V), NSC5083B (2.5 V), NSC5083C (3.0 V), or NSC5083D (3.3 V).
No mismatch found
- MPN/manufacturer identity.
- Four-pin count.
- Pin numbering and functions.
- Body dimensions.
- Pad size and X/Y pitch.
- Pin-1 footprint orientation.
Recommended Corrections
- Replace the stored Datasheet URL with the current official NDK PDF even though a URL is already present, to eliminate the 50 MHz vs 54 MHz revision discrepancy.
- Set pin electrical types and add the recommended pin descriptions above.
- Add package/case metadata:
2.5 x 2.0 x 0.9 mm SMD, 4-pad. - Add family-level properties: operating temperature
-40 to +85 degC, outputCMOS, frequency range20 to 54 MHz. - For a production-ready orderable part, specialize this family part to a selected frequency and nominal supply/specification number.
Scope
Current Part Information
Key Datasheet Specifications
Symbol and Pin Cross-Check
Symbol findings
Footprint Cross-Check
Datasheet recommended land pattern
Current footprint
Footprint result
Non-datasheet footprint quality observations
Mismatches and Risks
Confirmed mismatches / incomplete data
No mismatch found
Recommended Corrections
