5mm InGaAs PIN Photodiode TO5

Box Optronics, a professional optoelectronic component manufacturer and supplier, offers the 5mm InGaAs PIN Photodiode TO5 (Model: BPD-5STO5B-FW). Featuring a large 5mm active area for maximum light collection, a wide spectral response from 900nm to 1650nm, high responsivity, low dark current, and a hermetic TO5 flat-window metal package. Box Optronics provides long-term supply for instrument production programs.

Send Inquiry

Product Description

Product Overview - 5mm InGaAs PIN Photodiode TO5

The BPD-5STO5B-FW from Box Optronics is a 5mm active -area InGaAs PIN photodiode in a TO5 hermetic package with a flat window. Its 900 -1650nm spectral response covers common near-infrared sensing and spectroscopy wavelengths. The large 5mm active area provides high optical collection capability and alignment tolerance for large or divergent beams, making it suitable for free-space optical detection, power measurement, and NIR sensing applications.

Key Features - 5mm InGaAs PIN Photodiode TO5

· Large active area diameter: 5mm

· Wide spectral response range: 900nm to 1650nm

· High responsivity: 0.9A/W typica l at 1310nm; 0.95A/W typical at 1550nm

· Low dark current

· Hermetic TO5 flat-window metal package

· Suitable for free-space optical detection and large-beam power measurement

Typical Applications - 5mm InGaAs PIN Photodiode TO5

· Optical power meters and handheld optical power measurement devices

· Optical power monitoring modules and built-in power monitoring in optical equipment

· Fiber optic communication test and measurement instruments

· Free-space optical detection and optical sensing systems with large or divergent beams

· Near-infrared (NIR) spectroscopy and analytical instruments in the 900 -1650nm range

· Optical attenuator calibration and optical component characterization

· Photonics research and laboratory optical measurement instrumentation

· OEM integration into optical test equipment, fiber optic instruments, and industrial optical systems

Product Specifications - 5mm InGaAs PIN Photodiode TO5

Absolute Maximum Ratings (TC = 25°C)

Parameter	Symbol	Rating	Unit
Reverse Voltage	VRmax	5	V
Operating Case Temperature	TOP	-40 ~ +85	°C
Storage Temperature	TST	-55 ~ +120	°C

Electro-Optical Characteristics (TC = 25°C)

Parameter	Symbol	Test Condition	Min.	Typ.	Max.	Unit
Active Area Diameter	φ	-	-	5	-	mm
Spectral Range	λ	-	900	-	1650	nm
Responsivity @ 1310nm	R	VR = 0V	0.85	0.9	-	A/W
Responsivity @ 1550nm	R	VR = 0V	-	0.95	-	A/W
Operating Reverse Voltage	VR	VR = -5V	-	-	-5	V
Dark Current	Id	VR = -5V	-	2	10	nA
Junction Capacitance	C	VR = -5V, f = 1MHz	-	160	230	pF
Junction Capacitance	C	VR = 0V, f = 1MHz	-	400	600	pF

Package Dimensions and Pin Definition - 5mm InGaAs PIN Photodiode TO5

Ordering Information - 5mm InGaAs PIN Photodiode TO5

Model Nomenclature

BPD - X X TO XX - X - X

Example: BPD-5STO5B-FW

Field	Code	Description
Product Series	BPD	Box Photodiode Series
Active Area Size	5S	5S = 5mm diameter (1S=1mm, 2S=2mm, 3S=3mm, 5S=5mm)
Package Type	TO5	TO5 = TO5 package (TO46=TO46)
Pin Type	B	B = B type pin-out
Window Type	FW	FW = Flat Window (BL = Ball Lens / Spherical Lens)

Datasheet

datasheet

Frequently Asked Questions (FAQ)

Q: What is the difference between the 5mm, 3mm, 2mm, and 1mm InGaAs PIN photodiodes?

A: The primary difference is the active area diameter, which affects optical collection capability, alignment tolerance, and junction capacitance (and therefore bandwidth). The 5mm device provides the largest active area and greater alignment tolerance, making it well suited for free-space detection, large or divergent beams, and optical power measurement where precise alignment is more difficult. However, its larger active area results in higher junction capacitance (160pF typical at -5V), limiting its bandwidth compared with smaller-area devices. The 3mm and 2mm devices provide a balance between optical collection capability and bandwidth, while the 1mm device generally offers lower capacitance and faster response but requires more precise optical alignment. The choice depends on the beam size, coupling method, and bandwidth requirements of the application.

Q: What wavelength range can this 5mm InGaAs photodiode detect?

A: This InGaAs PIN photodiode provides a broad spectral response from 900nm to 1650nm, covering commonly used optical wavelengths including the O-band (1260–1360nm), C-band (1530–1565nm), and L-band (1565–1625nm). Responsivity is specified at 1310nm (0.9A/W typical) and 1550nm (0.95A/W typical). It is suitable for NIR detection applications such as optical power measurement, laser monitoring, sensing, spectroscopy, and optical instrumentation within this range.

Q: What is the minimum order quantity (MOQ)?

A: The MOQ for the 5mm InGaAs PIN Photodiode TO5 is 1 unit. We support flexible order quantities, from single units for R&D and prototyping to larger volumes for instrument production and OEM programs. Contact our sales team for pricing based on your required quantity.