Form Factors

Form factor refers to the physical dimensions and shape of a transceiver. Form factor includes aspects like the size, shape, connector type, and other physical characteristics. It determines how the transceiver fits into networking equipment like switches, routers, or servers.

Juniper supports the OSFP1600 form factor for 1.6T transceivers.

Octal Small Form Factor Pluggable (OSFP1600)

OSFP is designed for high-speed applications, including Juniper's 1.6T transceivers. It focuses on efficiently managing heat dissipation. It is compatible with some of the other form factors such as OSFP800. Based on the design, an OSFP transceiver module can be of two types:

OSFP transceiver module with integrated heat sink (OSFP)—The classic configuration for an OSFP transceiver.
OSFP transceiver module with riding heat sink (OSFP-RHS or ORHS)—The OSFP-RHS is a 9.5 mm tall pluggable module that is used in place of the integrated heat sink.

OSFP and OSFP-RHS are two different form factors. You cannot have a common host for these optical transceivers. The following are the features of OSFP-RHS:

1.6 T capacity using 200G lanes
Optimization for cold-plate, liquid-cooled system
Input voltage of 3.3 V

Table 1: Feature Comparison of OSFP and OSFP-RHS
Transceiver Feature	OSFP	OSFP-RHS
Transceiver module (height)	13 mm height for OSFP within the cage	9.5 mm height without heat sink
Cage	Port height/positive stop/bezel cutout is different from OSFP-RHS	The OSFP-RHS cannot be installed in an OSFP cage, as it is mechanically distinct and incompatible with the standard OSFP design.
Durability	Identical	Identical
Thermal requirement	Standard: 0 through 70° C High power modules: 75° C to 80° C	Standard: 0 through 70° C High power modules: 75° C to 80° C
Power requirement	16 W to 43 W	16 W to 43 W
Electrical and management interface	OIF CEI and OIF CMIS	OIF CEI and OIF CMIS

Note:

If the feature is not explicitly specified for OSFP-RHS, the same specifications of OSFP are applicable.

Color Codes
Insertion, Extraction, and Retention Forces
Power Requirements

Color Codes

Transceiver modules adhere to a color code by application of color to its pull-tab or other appropriate method.

Table 2: OSFP Color Codes
Product Type	Color	Pantone Code
OSFP copper cables	Black	Not applicable
OSFP AOC cables	Gray	422U
OSFP 850 nm solutions	Beige	475U
OSFP 1310 nm solutions for up to 500 m	Yellow	107U
OSFP 1310 nm solutions for up to 2 km	Green	354C
OSFP 1310 nm solutions for up to 10 km	Blue	300U
OSFP 1310 nm solutions for up to 40 km	Red	1797U
OSFP 1550 nm solutions for up to 80 km	White	Not applicable

Insertion, Extraction, and Retention Forces

The following are details about the insertion, extraction, and retention forces acting on an OSFP transceiver module:

Table 3: Insertion, Extraction, and Retention Forces for an OSFP Transceiver Module
Action	Minimum (N)	Maximum (N)	Notes
OSFP transceiver module insertion	Not applicable	40 (55)	Transceiver module to be inserted into connector and cage with latch mechanism engaged (55 N if the cage has riding heat sink)
OSFP transceiver module extraction	Not applicable	30 (45)	Transceiver module to be removed from connector and cage with latching mechanism disengaged (45 N if the cage has riding heat sink)
OSFP transceiver module retention	125	Not applicable	If the module has a pull tab, the pull tab should be able to withstand up to 90 N of the pulling under maximum operating temperature of the module.

Table 4: OSFP Transceiver Module Thermal Requirements
Parameter	Value
Life expectancy	10 years
Maximum temperature rise (when all signal and power contacts are simultaneously energized)	Vendor specific

Table 5: LED Signaling for an OSFP Transceiver Module
LED Status	Indication
On for 0.22 seconds (Channel 1)	Green—Indicates channel 1 is operational. Yellow—Indicates channel 1 is non-operational or disabled.
Off for 0.22 seconds (Channel 1)	Pause until LED indicates status of next channel.
On for 0.22 seconds (Channel 2)	Green—Indicates channel 2 is operational. Yellow—Indicates channel 2 is non-operational or disabled.
Off for 0.22 seconds (Channel 2)	Pause until LED indicates status of next channel.
...	The ellipsis pattern repeats to the final (nth) port.
Off for 1.76 seconds	Long pause for clear separation before pattern repeats from the beginning.

Power Requirements

Transceiver modules have varying power consumption levels and thermal output. It depends on the overall platforms design, airflow, size, height, and quality of the heat sinks on top of the ports.

OSFP and OSFP-RHS—The 1.6T optics clients that use the OSFP and OSFP-RHS form factor consume 16 W to 28 W approximately.