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BPW34FAS Equivalent & Substitute Parts
Part Overview
The BPW34FAS is a PIN photodiode optical sensor manufactured by ams-OSRAM USA INC., designed for 880nm infrared detection applications. This component features a 20ns response time, 120° viewing angle, and 2-SMD Gull Wing surface mount packaging. The BPW34FAS is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The substitute part maintains identical optical and electrical performance characteristics while offering improved availability and compliance status.
Substiute Parts
Key Parameters
| Parameter | Value | Unit | Significance for Substitution |
|---|---|---|---|
| Wavelength | 880 | nm | Core detection wavelength; must match exactly |
| Diode Type | PIN | — | Determines photodiode architecture and performance class |
| Response Time | 20 | ns | Critical for high-speed switching applications |
| Voltage - DC Reverse (Vr) Max | 16 | V | Maximum reverse bias rating; circuit design constraint |
| Current - Dark (Typ) | 2 | nA | Baseline noise floor specification |
| Active Area | 7.0 | mm² | Determines light collection efficiency and sensitivity |
| Viewing Angle | 120 | ° | Field of view acceptance angle |
| Operating Temperature Range | -40 to 100 | °C | Environmental operating limits |
| Mounting Type | Surface Mount | — | PCB assembly compatibility |
| Package / Case | 2-SMD, Gull Wing | — | Physical footprint and lead configuration |
Substitute Part Grouping Explanation
Substitution of the BPW34FAS is based on strict equivalence across all critical optical and electrical parameters. The substitute part BPW 34 FAS-Z maintains identical specifications for wavelength (880nm), diode type (PIN), response time (20ns), maximum reverse voltage (16V), dark current (2nA), viewing angle (120°), and operating temperature range (-40°C to 100°C). Both parts utilize identical 2-SMD Gull Wing surface mount packaging, ensuring mechanical and electrical compatibility at the PCB level.
The active area specification shows a negligible difference (7mm² versus 7.02mm²), which falls within standard manufacturing tolerances for this component class and does not affect functional substitution. The primary distinction between the main part and substitute is product status and compliance certification: BPW34FAS is obsolete, while BPW 34 FAS-Z is active production with RoHS3 compliance and improved inventory availability.
Parameter Comparison
| Parameter | BPW34FAS (Main) | BPW 34 FAS-Z (Substitute) | Compatibility |
|---|---|---|---|
| Manufacturer | ams-OSRAM USA INC. | ams-OSRAM USA INC. | Identical |
| Wavelength | 880 nm | 880 nm | Identical |
| Diode Type | PIN | PIN | Identical |
| Response Time | 20 ns | 20 ns | Identical |
| Voltage - DC Reverse (Vr) Max | 16 V | 16 V | Identical |
| Current - Dark (Typ) | 2 nA | 2 nA | Identical |
| Active Area | 7 mm² | 7.02 mm² | Within tolerance |
| Viewing Angle | 120° | 120° | Identical |
| Operating Temperature | -40°C to 100°C | -40°C to 100°C | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Package / Case | 2-SMD, Gull Wing | 2-SMD, Gull Wing | Identical |
| Product Status | Obsolete | Active | Substitute is active |
| RoHS Status | Non-compliant | RoHS3 Compliant | Substitute meets RoHS3 |
Engineering Selection Recommendations
The BPW 34 FAS-Z is the direct functional equivalent for BPW34FAS applications. Selection of the substitute part is based on the following engineering criteria:
Product Status: BPW34FAS is classified as obsolete, creating supply chain risk for new production and long-term support. BPW 34 FAS-Z maintains active production status with established supply channels.
Regulatory Compliance: BPW 34 FAS-Z carries RoHS3 certification, meeting current environmental and regulatory requirements for electronic components in most jurisdictions. BPW34FAS is non-compliant with RoHS standards.
Electrical and Optical Equivalence: All critical performance parameters are identical between the two parts, including wavelength, response time, reverse voltage rating, dark current, and viewing angle. The active area difference (7mm² to 7.02mm²) is within standard manufacturing tolerance and does not affect circuit performance.
Packaging Compatibility: Both parts use identical 2-SMD Gull Wing surface mount packaging, ensuring direct PCB footprint compatibility without layout modifications.
Inventory and Availability: BPW 34 FAS-Z is available in Tape & Reel packaging with significantly higher stock levels, supporting both prototype and production volume requirements.
Frequently Asked Questions (FAQ)
Q: Can BPW 34 FAS-Z be used as a direct replacement for BPW34FAS in existing designs?
A: Yes. BPW 34 FAS-Z is electrically and optically equivalent to BPW34FAS across all specified parameters. The 2-SMD Gull Wing package is identical, allowing direct PCB substitution without design modifications.
Q: What is the difference between the two part numbers?
A: BPW34FAS is an obsolete part number. BPW 34 FAS-Z is the active production equivalent from the same manufacturer. The "-Z" suffix indicates the active variant with RoHS3 compliance and current manufacturing status.
Q: Are there differences in the active area specification?
A: The active area differs slightly (7mm² versus 7.02mm²). This 0.02mm² difference is within standard manufacturing tolerance for photodiode components and does not affect functional performance or circuit behavior.
Q: What packaging options are available for BPW 34 FAS-Z?
A: BPW 34 FAS-Z is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. BPW34FAS was supplied in standard packaging. Both use identical component geometry.
Q: Does BPW 34 FAS-Z meet current regulatory requirements?
A: Yes. BPW 34 FAS-Z is RoHS3 compliant and REACH unaffected, meeting current environmental regulations for electronic component manufacturing and distribution.
Q: Are the optical characteristics identical between the two parts?
A: Yes. Both parts feature 880nm wavelength detection, 20ns response time, 120° viewing angle, and PIN diode architecture. Spectral range (730nm to 1100nm) is identical.
Q: What is the moisture sensitivity level difference?
A: BPW34FAS has MSL 1 (unlimited shelf life). BPW 34 FAS-Z has MSL 4 (72-hour floor life after moisture exposure). This requires standard moisture control procedures during storage and assembly but does not affect component performance.
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