Part Audit Review

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Part Audit Report

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Part Audit Report Scope

Audit of the BPW 34 FA part project against the official ams OSRAM datasheet and product page.

Official datasheet: https://look.ams-osram.com/m/7a9272252f8d5983/original/BPW-34-FA.pdf
Official product page: https://ams-osram.com/products/photodetectors/photodiodes/osram-dil-bpw-34-fa
Datasheet version reviewed: 1.6, 2023-08-01

Part Metadata Review Key Specifications Symbol and Pin Audit Current implementation

Terminal K is assigned Pin Number 1.
Terminal A is assigned Pin Number 2.
Both terminals use Pin Type: Unspecified and have no useful pin descriptions.

Datasheet-family convention

The BPW34-family pin convention is Pin 1 = Anode and Pin 2 = Cathode, with the package physically marking the catho...

flux

Audit complete. The Datasheet URL was already populated, so no property update was needed; I verified the official ams OSRAM datasheet.

Key issues:

Critical: Pin numbering appears reversed—current Pin 1 = K and Pin 2 = A; expected Pin 1 = A, Pin 2 = K.
Footprint pitch is correct at 5.08 mm, but the body/silkscreen dimensions do not match the official 5.15 × 3.85 × 2.05 mm package.
Pin types/descriptions are incomplete.
The part is officially discontinued.

Full specifications and findings: Part Audit Report.

adrian95

Correct the pin numbering, terminal descriptions, and footprint body/silkscreen geometry to match the official datasheet.

Thought for 9 sec

flux

I’ll correct the terminal numbering and metadata first, then rebuild the footprint body and silkscreen to the official 5.15 × 3.85 mm package dimensions and verify the result.

Worked for 37 sec

flux

Pin 1 is now the anode and Pin 2 the cathode, with passive types and datasheet-based descriptions. I’m replacing the old package outline with a 5.15 × 3.85 mm body and moving the polarity marking to the cathode side.

Worked for 2 mins 44 sec

flux

Corrections completed and verified:

Pin 1 = A, “Photodiode anode,” passive.
Pin 2 = K, “Photodiode cathode; package-marked lead,” passive.
Pad mapping is now correct at 5.08 mm pitch.
Body and silkscreen are corrected to 5.15 × 3.85 mm, with pad-clearance gaps and a pin-2 cathode mark.

The corrected status is recorded in the Part Audit Report. The imported footprint’s legacy filename remains unchanged, but its effective geometry is overridden correctly.

Clean legacy footprint metadata

Check 3D model alignment

Add lifecycle warning

Review manufacturability

Files

Pins

Symbol

Layout

Preview

Part Audit Report

Scope

Audit of the BPW 34 FA part project against the official ams OSRAM datasheet and product page.

Official datasheet: https://look.ams-osram.com/m/7a9272252f8d5983/original/BPW-34-FA.pdf
Official product page: https://ams-osram.com/products/photodetectors/photodiodes/osram-dil-bpw-34-fa
Datasheet version reviewed: 1.6, 2023-08-01

Part Metadata Review

Table

Field	Current project	Datasheet / official source	Result
Manufacturer part number	`BPW34-FA`	`BPW 34 FA`	Acceptable formatting difference
Manufacturer	`AMS OSRAM GROUP`	ams-OSRAM AG	Acceptable naming variation
Part type	Photodiode	Silicon PIN photodiode with daylight filter	Match
Pin count	2 terminals	2 leads	Match
Package	Footprint named `Osram_DIL2_4.3x4.65mm_P5.08mm`	DIL plastic, black epoxy; nominal 5.15 × 3.85 × 2.05 mm	Package family matches; body dimensions do not
Datasheet URL	Existing uploaded PDF URL	Official ams OSRAM PDF found above	No update required because the property was already populated
Lifecycle	Not represented	Discontinued	Missing metadata / sourcing warning
Description	PIN photodiode, daylight filter, 730–1100 nm, 50 µA, 16 V, 20 ns, ±60°	Consistent with official datasheet	Match

Key Specifications

Table

Parameter	Datasheet value
Spectral sensitivity range (10%)	730–1100 nm typical
Peak sensitivity wavelength	880 nm typical
Photocurrent	44 µA minimum, 50 µA typical at 870 nm, 1 mW/cm², 5 V reverse bias
Spectral sensitivity at 870 nm	0.65 A/W typical
Dark current	2 nA typical, 30 nA maximum at 10 V reverse bias
Junction capacitance	72 pF typical at 0 V, 1 MHz
Rise / fall time	20 ns typical at 5 V reverse bias and 50 Ω load
Continuous reverse voltage	16 V maximum
Short-duration reverse voltage	32 V maximum for ≤2 min at 0 °C
Total power dissipation	150 mW maximum at 25 °C
Operating temperature	−40 to +100 °C
Radiant-sensitive area	7.02 mm² typical (approximately 2.65 × 2.65 mm)
Half angle	±60° typical
Package mass	Approximately 78 mg
Lifecycle	Discontinued

Symbol and Pin Audit

Current implementation

Terminal K is assigned Pin Number 1.
Terminal A is assigned Pin Number 2.
Both terminals use Pin Type: Unspecified and have no useful pin descriptions.

Datasheet-family convention

The BPW34-family pin convention is Pin 1 = Anode and Pin 2 = Cathode, with the package physically marking the cathode. The current symbol therefore appears polarity-reversed by pin number:

Current Pin 1: K — expected A
Current Pin 2: A — expected K

Severity: critical. Because footprint pad binding follows terminal pin numbers, this reversal can produce a board whose anode/cathode connectivity is opposite to the intended schematic polarity.

Recommended terminal metadata:

Table

Pin	Name	Pin type	Description
1	A	Passive	Photodiode anode
2	K	Passive	Photodiode cathode; package-marked lead

Footprint Audit

Matches

Two plated through-hole pads.
5.08 mm lead pitch matches the official dimensional drawing.
0.7 mm drills are plausibly compatible with nominal 0.50 × 0.25 mm leads.
Pin-1 pad is visually distinguished, which is good practice.

Mismatches / risks

Pad polarity mapping follows the reversed symbol numbering. The footprint currently maps pad 1 to K and pad 2 to A; expected mapping is pad 1 to A, pad 2 to K.
Footprint body geometry is mislabeled and undersized/mis-proportioned. The asset name and description state approximately 4.3 × 4.65 mm, while the official package is nominally 5.15 × 3.85 × 2.05 mm.
Silkscreen/fabrication outline should be checked against the package drawing. The current outline spans approximately 4.87 × 4.52 mm in its main body representation, which does not match the official nominal 5.15 × 3.85 mm body.
Lifecycle status is absent. The official product is discontinued, so the part should carry a sourcing warning and replacement review before new production use.

Correction Status — 2026-08-24

The identified symbol and footprint issues have been corrected in the part project:

Pin 1 is now A (photodiode anode), passive.
Pin 2 is now K (photodiode cathode; package-marked lead), passive.
Terminal descriptions, pin grouping, and deterministic terminal order were added.
Pad mapping now resolves as pad 1 = anode and pad 2 = cathode at 5.08 mm pitch.
Fabrication/body geometry is overridden to the official nominal 5.15 × 3.85 mm outline.
Silkscreen geometry is overridden to the same nominal body size, with clearance gaps around both through-hole pads and a cathode-side polarity mark at pin 2.

Overall Assessment

Corrected and verified. The terminal numbering, descriptions, pad mapping, body outline, and silkscreen geometry now match the official datasheet dimensions and polarity convention. The original imported footprint asset name still contains its legacy dimensional label, but the effective PCB geometry is controlled by the verified correction rules.

Scope
Part Metadata Review
Key Specifications
Symbol and Pin Audit
Current implementation
Datasheet-family convention
Footprint Audit
Matches
Mismatches / risks
Correction Status — 2026-08-24
Overall Assessment