Best quality Aoc 25g Sfp28 Active Optical Cable 3m - 25G SFP28 Direct Attach Cable (DAC) JHA-SFP28-25G-PCU – JHA

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Best quality Aoc 25g Sfp28 Active Optical Cable 3m - 25G SFP28 Direct Attach Cable (DAC) JHA-SFP28-25G-PCU – JHA Detail:

General Description

SFP28 Direct Attach Cables are compliant with SFF-8432 and SFF-8402 specifications. Various choices of wire gauge are available from 30 to 26 AWG with various choices of cable length (up to 5m).

The SFP28 passive cable assemblies are high performance, cost effective I/O solutions for 25G Ethernet. SFP28 copper cables allow hardware manufactures to achieve high port density, configurability and utilization at a very low cost and reduced power budget.

Features

◊ Up to 25.78125 Gbps data rate

◊ Up to 5 meter transmission

◊ Hot-pluggable SFP 20PIN footprint

◊ Improved Pluggable Form Factor(IPF) compliant for enhanced EMI/EMC performance

◊ Compatible to SFP28 MSA

◊ Compatible to SFF-8402 and SFF-8432

◊ Temperature Range: 0~ 70 °C

◊ RoHS Compatible

Benefits

◊ Cost-effective copper solution

◊ Lowest total system power solution

◊ Lowest total system EMI solution

◊ Optimized design for Signal Integrity

Applications

◊ 25G Ethernet

High Speed Characteristics

Parameter	Symbol	Min	Typical	Max	Unit	Note
Differential Impedance	RIN,P-P	90	100	110	Ώ
Insertion loss	SDD21	8		22.48	dB	At 12.8906 GHz
Differential Return Loss	SDD11	12.45		See 1	dB	At 0.05 to 4.1 GHz
Differential Return Loss	SDD22	3.12		See 2	dB	At 4.1 to 19 GHz
	SDD22	3.12		See 2	dB	At 4.1 to 19 GHz
Common-mode to	SCC11				dB
common-mode	SCC11	2				At 0.2 to 19 GHz
common-mode	SCC22	2				At 0.2 to 19 GHz
output return loss	SCC22
output return loss
Differential to common-mode	SCD11	12		See 3	dB	At 0.01 to 12.89 GHz
Differential to common-mode	SCD11
return loss	SCD22	10.58		See 4		At 12.89 to 19 GHz
return loss	SCD22	10.58		See 4		At 12.89 to 19 GHz

		10				At 0.01 to 12.89 GHz
Differential to common Mode	SCD21-IL			See 5	dB	At 12.89 to 15.7 GHz
Conversion Loss	SCD21-IL			See 5	dB	At 12.89 to 15.7 GHz
		6.3				At 15.7 to 19 GHz
Channel Operating Margin	COM	3			dB

Pin Descriptions

SFP28 Pin Function Definition

Pin		Logic	Symbol		Name/Description	Notes
1			VeeT		Transmitter Ground
2		LV-TTL-O	TX_Fault		N/A	1
3		LV-TTL-I	TX_DIS		Transmitter Disable	2
4		LV-TTL-I/O	SDA		Tow Wire Serial Data
5		LV-TTL-I	SCL		Tow Wire Serial Clock
6			MOD_DEF0		Module present, connect to VeeT
7		LV-TTL-I	RS0		N/A	1
8		LV-TTL-O	LOS		LOS of Signal	2
9		LV-TTL-I	RS1		N/A	1
10			VeeR		Reciever Ground
11			VeeR		Reciever Ground
12		CML-O	RD-		Reciever Data Inverted
13		CML-O	RD+		Reciever Data Non-Inverted
14			VeeR		Reciever Ground
15			VccR		Reciever Supply 3.3V
16			VccT		Transmitter Supply 3.3V
17			VeeT		Transmitter Ground
	18	CML-I	TD+		Transmitter Data Non-Inverted
	19	CML_I	TD-		Transmitter Data Inverted
	20		VeeT		Transmitter Ground
1.	Signals not supported in SFP+ Copper pulled-downto VeeT with 30K ohms resistor
2.	Passive cable assemblies do not support			LOS and TX_DIS

Mechanical Specifications

The connector is compatible with the SFF-8432 specification.

Length (m)	Cable AWG
1	30
2	30
3	30/26
4	26
5	26

Regulatory Compliance

Feature	Test Method	Performance
Electrostatic Discharge (ESD) to the Electrical Pins	MIL-STD-883C Method 3015.7	Class 1(>2000 Volts)
Electromagnetic Interference(EMI)	FCC Class B	Compliant with Standards
	CENELEC EN55022 Class B
	CISPR22 ITE Class B
RF Immunity(RFI)	IEC61000-4-3	Typically Show no Measurable Effect from a 10V/m Field Swept from 80 to 1000MHz
RoHS Compliance	RoHS Directive 2011/65/EU and it’s Amendment Directives 6/6	RoHS 6/6 compliant

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