QSD2030 Equivalent & Substitute Parts

Part Overview

The QSD2030 is an active photodiode optical sensor manufactured by onsemi, designed for 880nm wavelength detection applications. This PIN photodiode features a 5mm radial package (T 1 3/4) with a 40° viewing angle and 5ns response time, suitable for through-hole mounting in infrared sensing circuits. The component is ROHS3 compliant and maintains active product status with 991 units in current inventory.

Substitute parts may be required due to component availability constraints, design optimization needs, or application-specific parameter adjustments within acceptable electrical and mechanical tolerances.

Substiute Parts

QSD2030

onsemiIn Stock: 1047QSD2030 Datasheet

Current PartRFQ

PD333-3C/H0/L2

Everlight Electronics Co LtdIn Stock: 23926PD333-3C/H0/L2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The PD333-3C/H0/L2 (Everlight Electronics Co Ltd) is identified as a substitute for the QSD2030 based on the following substitution criteria:

Common Electrical Characteristics:

• PIN diode type architecture
• Spectral range compatibility (400nm ~ 1100nm)
• Through-hole radial mounting configuration
• ROHS3 compliance and REACH unaffected status
• EAR99 export classification

Allowable Parameter Variations: Substitution is valid within the following parameter ranges:

• Wavelength: 880nm (QSD2030) to 940nm (PD333-3C/H0/L2) — both within infrared detection spectrum
• Response Time: 5ns to 45ns — acceptable for non-real-time critical applications
• Reverse Voltage: 50V to 170V — substitute provides higher voltage rating
• Dark Current: 10nA to 5nA — substitute provides lower leakage
• Active Area: 1.55mm² to 19.6mm² — substitute provides larger detection surface
• Viewing Angle: 40° to 80° — substitute provides wider field of view
• Operating Temperature: -40°C ~ 100°C (QSD2030) vs -25°C ~ 85°C (PD333-3C/H0/L2) — overlap range -25°C ~ 85°C

Parameter Comparison

Engineering Selection Recommendations

QSD2030 Selection Criteria:

• Applications requiring 880nm wavelength specificity
• High-speed response requirements (5ns)
• Extended low-temperature operation (-40°C minimum)
• Compact active area (1.55mm²) for focused detection
• Narrow viewing angle (40°) for directional sensing
• Lower reverse voltage tolerance (50V maximum)

PD333-3C/H0/L2 Selection Criteria:

• Applications tolerant of 940nm wavelength shift
• Moderate response time requirements (45ns acceptable)
• Standard temperature range operation (-25°C ~ 85°C)
• Larger active area (19.6mm²) for increased light collection
• Wide viewing angle (80°) for broad field detection
• Higher reverse voltage capability (170V maximum)
• Lower dark current (5nA) for reduced noise floor

Both components maintain ROHS3 compliance, active product status, and identical export classification (EAR99), ensuring regulatory and procurement consistency.

Frequently Asked Questions (FAQ)

Q: Can PD333-3C/H0/L2 directly replace QSD2030 in existing designs?

A: Direct replacement requires circuit-level evaluation. The substitute differs in wavelength (940nm vs 880nm), response time (45ns vs 5ns), and operating temperature range (-25°C ~ 85°C vs -40°C ~ 100°C). Verify that your application tolerates these parameter shifts before substitution.

Q: What is the impact of wavelength difference (880nm to 940nm)?

A: The 60nm shift moves detection into a longer infrared wavelength. This affects spectral sensitivity and may impact performance in applications with wavelength-specific optical filters or light sources. Confirm compatibility with your optical system design.

Q: Does the larger active area (19.6mm² vs 1.55mm²) affect circuit performance?

A: The larger active area increases light collection efficiency and signal strength but may reduce spatial resolution in focused detection applications. Circuit impedance and capacitance may also change, requiring verification of signal conditioning circuits.

Q: Is the 45ns response time acceptable as a substitute for 5ns?

A: Response time suitability depends on application bandwidth requirements. The 9x slower response time (45ns vs 5ns) is acceptable for low-frequency or DC-coupled sensing but unsuitable for high-speed pulse detection or modulated signal recovery.

Q: What are the temperature range implications?

A: QSD2030 operates to -40°C; PD333-3C/H0/L2 minimum is -25°C. If your application requires sub-zero operation below -25°C, QSD2030 is required. Both components support standard industrial temperature ranges above -25°C.

Q: Are both components pin-compatible?

A: Both use through-hole radial packages. Physical mounting compatibility is confirmed. However, verify PCB footprint dimensions and lead spacing match your design before assembly.

Q: Do compliance certifications differ between components?

A: Both components are ROHS3 compliant, REACH unaffected, and classified as EAR99. No regulatory or export restrictions differ between the two parts.