Part Datasheet 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 5 sec
I’ll inspect the part metadata, look up the official datasheet if needed, update the Datasheet property if it’s missing, then cross-check symbol/footprint/pins and summarize any mismatches.
Worked for 2 mins 51 sec
Created a project doc
Reviewed the part against the attached datasheet and saved the detailed report in Part Review - DXT5551P5-13.
- Datasheet URL was already populated, so I did not update it.
- Key specs match: DXT5551P5-13, Diodes Inc., NPN, 160 V VCEO, 600 mA IC, PowerDI5, 3 pins.
- Footprint pad sizes/numbering match the PowerDI5 recommended land pattern.
- Main issue flagged: schematic pins lack functional descriptions/types; expected pinout is 1=Base, 2=Emitter, 3=Collector.
Fix metadata and verify
Fix pin descriptions
Add package property
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Part Review - DXT5551P5-13
Date: 2026-07-13
Available part information reviewed
- Project / part name: DXT5551P5-13
- Manufacturer Part Number: DXT5551P5-13
- Manufacturer: Diodes Incorporated
- Project description: Bipolar Transistors - BJT BIPOLAR TRANS,NPN 160V, 600mA
- Part Type property: Transistors
- Designator Prefix: Q
- Datasheet URL property: 85e2e528d712c09a8df5cc2240af0f4d55fc103f35938a5dfa7da12ce726f48a.pdf
- Published Part UID: 2c350fb6-56df-463d-b1d1-3178c560f394
- Schematic terminals: 3 terminal symbols, with Pin Number properties 1, 2, and 3
- PCB footprint asset: DXT5551P513.kicad_mod
- 3D model asset: DXT5551P5-13.stp
The Datasheet URL property was already populated, so no datasheet-property update was required under the requested rule.
Datasheet identity and key specs
Source: datasheet currently attached to the part.
- Device: DXT5551P5
- Orderable product: DXT5551P5-13
- Description: 160 V NPN high-voltage transistor
- Package / case: PowerDI5
- Marking: DXT5551
- Reel: 13 inch, 16 mm tape, 5,000 per reel
- Maximum collector-base voltage, VCBO: 180 V
- Maximum collector-emitter voltage, VCEO: 160 V
- Maximum emitter-base voltage, VEBO: 6 V
- Continuous collector current, IC: 600 mA
- Power dissipation: up to 2.25 W with 50 mm x 50 mm 2 oz collector pad; 0.7 W on minimum recommended pad layout
- RthetaJA: 55.5 degC/W with 50 mm x 50 mm 2 oz collector pad; 179 degC/W on minimum recommended pad layout
- RthetaJT: 30 degC/W
- Operating / storage temperature: -55 degC to +150 degC
- hFE: min 80 at IC=1 mA; min 80 typ 145 max 250 at IC=10 mA; min 30 typ 65 at IC=50 mA, VCE=5 V
- VCE(sat): max 150 mV at IC=10 mA, IB=1 mA; max 200 mV at IC=50 mA, IB=5 mA
- fT: typ 130 MHz
- Cobo: max 6 pF
- Moisture sensitivity: MSL 1 per J-STD-020
- Qualification: AEC-Q101
Datasheet pinout
PowerDI5 terminal assignment from the datasheet:
Table
| Pin | Function |
|---|---|
| 1 | Base |
| 2 | Emitter |
| 3 | Collector |
Physical orientation shown by the datasheet: bottom-left = Base, bottom-right = Emitter, top / large terminal = Collector.
Footprint cross-check
Footprint pads found in DXT5551P513.kicad_mod:
Table
| Pad | Position | Size | Cross-check |
|---|---|---|---|
| 1 | x=-0.920 mm, y=2.856 mm | 1.390 mm x 1.400 mm | Matches bottom-left small pad, Base |
| 2 | x=0.920 mm, y=2.856 mm | 1.390 mm x 1.400 mm | Matches bottom-right small pad, Emitter |
| 3 | x=0.000 mm, y=-1.126 mm | 3.360 mm x 4.860 mm | Matches top / large pad, Collector |
Suggested pad layout from datasheet:
- C = 1.840 mm
- G = 0.852 mm
- X = 3.360 mm
- X1 = 1.390 mm
- Y = 4.860 mm
- Y1 = 1.400 mm
The implemented pad sizes and pitch are consistent with these recommended values. The footprint appears to be for PowerDI5, which matches DXT5551P5-13. It is not a SOT-89 footprint; that would correspond to a different DXT5551 orderable variant.
Schematic symbol cross-check
Current schematic symbol terminals:
Table
| Terminal | Current properties | Expected from datasheet | Result |
|---|---|---|---|
| Pin 1 | Pin Number = 1; Pin Type = Unspecified; no Pin Description observed | Base | Mismatch: missing pin description / type metadata |
| Pin 2 | Pin Number = 2; Pin Type = Unspecified; no Pin Description observed | Emitter | Mismatch: missing pin description / type metadata |
| Pin 3 | Pin Number = 3; Pin Type = Unspecified; no Pin Description observed | Collector | Mismatch: missing pin description / type metadata |
The symbol geometry places pin 1 at the left, pin 2 at the upper/right side, and pin 3 at the lower/right side, which is a conventional NPN BJT-style arrangement if the intended functions are Base, Collector, and Emitter respectively. However, the symbol currently does not store those functions as Pin Description values.
Mismatches / issues flagged
- Pin descriptions are missing from the schematic terminals. The expected descriptions are Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector.
- Pin Type is currently Unspecified on all three terminals. For a discrete transistor this may be electrically acceptable, but it is less descriptive than ideal for library quality.
- Package naming in project metadata is incomplete: the project has no explicit Package / Case Code property visible, while the datasheet package is PowerDI5.
- The attached Datasheet URL is present but points to a stored PDF copy, not directly to a Diodes-hosted URL. This satisfies the current Datasheet URL requirement as populated, but an official manufacturer URL would be preferable if the library policy requires direct manufacturer links.
Overall assessment
- MPN, manufacturer, description, pin count, and footprint are consistent with the attached datasheet for DXT5551P5-13.
- Footprint pad geometry and pad numbering match the datasheet recommended PowerDI5 land pattern.
- Main library-quality gap: schematic terminal descriptions and pin types are not populated.
Available part information reviewed
Datasheet identity and key specs
Datasheet pinout
Footprint cross-check
Schematic symbol cross-check
Mismatches / issues flagged
Overall assessment
