Microphotons MTPD2601T8-300 High-Speed InGaAs PIN Photodiode with Sealed Flat Lens in TO-39 Package, 800–2600 nm Spectral Range

Overview

The Microphotons MTPD2601T8-300 is a high-performance, hermetically sealed InGaAs PIN photodiode engineered for precision detection across the near-infrared (NIR) and short-wave infrared (SWIR) spectrum — specifically from 800 nm to 2600 nm. Designed using lattice-matched In_0.53Ga_0.47As on InP substrate, this device delivers low dark current, high quantum efficiency (>70% at 1550 nm), and excellent linearity over six decades of incident optical power. Its TO-39 metal-can package incorporates a flat fused silica window lens optimized for minimal chromatic aberration and high transmission across the full operational band. The device operates in photovoltaic or photoconductive mode and is suitable for integration into demanding optical systems requiring fast temporal response (<10 ns rise time), stable spectral responsivity, and long-term reliability under controlled environmental conditions.

Key Features

• Wide spectral response: 800–2600 nm, covering key NIR/SWIR bands used in spectroscopy, gas sensing, and fiber-optic communications
• Hermetically sealed TO-39 package with flat optical-grade fused silica lens — ensures long-term stability and resistance to humidity-induced degradation
• High-speed operation: typical rise/fall time <10 ns, enabling time-resolved measurements and pulsed laser detection
• Low dark current: <5 nA at –5 V reverse bias (typical), supporting high signal-to-noise ratio in low-light applications
• Active area diameter: 3.0 mm — balances sensitivity, capacitance, and spatial uniformity for collimated and focused beam configurations
• OEM-ready design: compatible with standard wire-bonding and hybrid assembly processes; RoHS-compliant materials and Pb-free soldering profiles supported

Sample Compatibility & Compliance

The MTPD2601T8-300 is designed for integration into laboratory-grade and industrial optical platforms, including FTIR spectrometers, tunable diode laser absorption spectrometers (TDLAS), OCT light sources, and SWIR imaging subsystems. It complies with IEC 60747-5-3 for optoelectronic semiconductor devices and meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 requirements when sealed per manufacturer handling guidelines. While not certified for medical or aerospace use out-of-box, its construction supports qualification per MIL-STD-750 Method 2024 (thermal shock) and Method 1017 (hermeticity testing) upon customer-specific validation. Device-level traceability includes wafer lot ID and individual unit test data sheets aligned with ISO/IEC 17025-accredited calibration practices.

Software & Data Management

As a passive detector element, the MTPD2601T8-300 does not include embedded firmware or digital interfaces. However, it is fully compatible with industry-standard analog signal conditioning architectures — including transimpedance amplifiers (TIAs), lock-in amplifiers (e.g., Zurich Instruments HF2LI), and digitizers (e.g., Keysight U1051A). Microphotons provides comprehensive characterization reports (responsivity vs. wavelength, dark current vs. bias, capacitance vs. reverse voltage) in CSV and PDF formats, traceable to NIST-calibrated reference detectors. For regulated environments (e.g., pharmaceutical QC labs), users may integrate the diode into systems compliant with FDA 21 CFR Part 11 via validated acquisition software (e.g., LabVIEW-based VI with audit trail logging) and documented instrument qualification protocols (IQ/OQ/PQ).

Applications

• Gas analysis: Detection of CO, CO₂, CH₄, NH₃, and H₂O vapor using absorption lines between 1200–2400 nm
• Fiber-optic monitoring: Power measurement and fault location in single-mode and multimode telecom fibers operating at 1310/1550/1625 nm windows
• Laser diagnostics: Pulse energy and temporal profile measurement for Q-switched and mode-locked lasers emitting in SWIR
• Material characterization: Reflectance and transmittance spectroscopy of polymers, semiconductors, and biological tissues
• Industrial process control: Real-time thickness monitoring of thin films and coatings during deposition

FAQ

What is the recommended reverse bias voltage range for optimal linearity and speed?

Typical operation uses –5 V to –10 V reverse bias; higher voltages improve bandwidth but increase dark current — consult the datasheet’s V_R vs. C_j curve for system-specific optimization.

Is the TO-39 package compatible with standard thermocompression bonding tools?

Yes — the package features gold-plated leads and a flat ceramic base compatible with automated die attach and wire bonding equipment calibrated for TO-series housings.

Can this photodiode be used in vacuum or inert-gas environments?

The hermetic seal qualifies it for operation in dry nitrogen or argon atmospheres; extended exposure to vacuum (<10⁻³ mbar) requires verification of outgassing compliance per ASTM E595.

Does Microphotons provide calibration certificates traceable to NIST?

Yes — optional NIST-traceable spectral responsivity calibration is available per unit (certified at 1064, 1310, 1550, and 1950 nm) with uncertainty budgets meeting ISO/IEC 17025 requirements.

What is the warranty coverage and exclusions?

One-year limited warranty against material and workmanship defects; excludes electrostatic discharge damage, mechanical modification, improper biasing, or use outside specified temperature/humidity ranges (–40°C to +85°C, non-condensing).