40G QSFP-SFP Passive Direct Copper Cables

1. Applications

40G QSFP+ to 10G SFP+
10G/40Gigabit Ethernet
InfiniBand4x SDR, DDR, QDR
Switches, Routers, and HBAs
Data Centers

2. Features

Hybrid cable conforms to the Small Form Factor SFF-8436 and SFF-8431
Support for multi-gigabit data rates :1 Gb/s – 10 Gb/s (per channel)
Maximum aggregate data rate: 40 Gb/s (4 x 10Gb/s)
Hybrid cable link length up to 5m (passive limiting)
High-Density QSFP 38-PIN and SFP 20-PIN Connector
Power Supply :+3.3V
Low power consumption: 0.02 W (typ.)
Temperature Range: 0~ 70 °C

3. Description

High Speed 40G QSFP+ to 10G SFP+ Direct Attach Cable copper cable assemblies are a low cost alternative for short reach 4X applications. They are designedto be fully compatible in form factor and optical/electrical connections according to the QSFP Multi-Source Agreement.

QSFP+ connectors provide four channels of data in one pluggable interface. Each channel is capableof transferring data at 10Gbps and supports a total of aggregate 40Gbps as specified for QSFP+. These interconnects have three times the density of SFP+ interconnects(MSA) and have been designed to meet the harshest external operating conditions including temperature, humidityand EMI interference.

QSFP+ cable assemblies are hot swappable and the programmed EEPROM signature enables the host to differentiate between a copper cable assembly and a fiber optic module.

Low power consumption assists in making the passive copper cable assembly an economic solution for withinrack, or rack-to-rack applications.

4. Standard

Compliant with electrical standards IEEE 802.3ba
Compliant with mechanical standard SFF-8436 and SFF-8431
Compliant with EEPROM standard SFF-8472
RoHS Compliant

5. Performance Specifications

5.1. Absolute Maximum Ratings

These values represent the damage threshold of the module. Stress in excess of any of the individual Absolute Maximum Ratings can cause immediate catastrophic damage to the module even if all other parameters are within Recommended Operating Conditions.

Table.1 Absolute maximum ratings

Parameter	Symbol	Min	Max	Unit
Maximum Supply Voltage	Vcc	0	3.6	V
Storage Temperature	Ts	-40	85	°C
Relative Humidity	RH	5	95	%

5.2. Recommended Operating Conditions

Table.2 Recommended Operating Conditions

Parameter	Symbol	Min	Typical	Max	Unit
Operating Case Temperature	Standard Tc	0	25	70	°C
Storage Temperature	Ts	0		70	°C
Relative Humidity	RH	5		95	%
Data Rate			10/40		Gbps

5.3. Product Characteristics

Table.3Product Characteristics

Test Type	Test Item	Target		Reference
	Differential Impedence	100+/ -10ohm (Rise time of 50 ps (20 %- 80 %))		IEEE Std.802.3ba
Electrical Characteristics	Differential Mode RL	Frequency(GHz)0.1-1.01.0-4.1	SDD11 & SDD22(max)-10-(12-2*sqrt(f))	Per table 10 of 1BCable MOL.v 0.68
	Differential IL	Frequency100MHz200MHz 625MHz 1250MHz 1875MHz 2500MHz	SDD21(min)-8-8 -8.5 -12.1 -14.7 -17	Ref table 43 ofInfinibandArchitecture Spec, V2
	NEXT	≥26dB @ 10MHz to 5.0GHz		/
	Intra-Pair Skew	≤100 ps(TDT Method) Rise time of 35 ps		(20 %- 80 %)
	Intra-Pair Skew	≤400 ps(TDT Method) Rise time of 35 ps		(20%~80 %)
EnvironmentalCharacteristics	Operating Temperature	-40~85°C		Cable operating temp.range
	Thermal Shock	No evidence of physical damage		EIA-364-32 Test
	Cyclic Temp. & Humidity	No evidence of physical damage		EIA-364-31 Method III,Test Cond A
	Salt spray	48 hours salt spraying after shell corrosive area less than 5%		EIA-364-26
	Temperature Life	Performance meets the specification requirement		EIA-364-17, Method A, Test Cond 3 at 105°±2°C
MechanicalCharacteristics	MechanicaIVibration	Performance meets the specification requirement		EIA-364-28E.11 TC-VII, Test Cond. D 15minutes in X,Y,Z axis.
	Cable Flex	Performance meets the specification requirement		EIA-444-1B
	Mechanical Shock	Performance meets the specification requirement		EIA-364-27B, TG-G. 3 times in 6 directions, 100g, 6ms
	Cable plug Insertion	40N Max.		Per QSFP MSA Rev 1.0
	Cable plug extraction	30N Max.		Per QSFP MSA Rev 1.0.
	Latch retention force	50N Min. No evidence of physical damage		EIA-364-13
	Durability	50 Time. No evidence of physical damage		EIA-364-09; perform plug&unplug cycles

5.4. Pin Definitions

5.9. Mechanical Dimensions

6. Aplication Cautions

6.1. ESD

This transceiver is specified as ESD threshold 1kV for high speed pins and 2kV for all other electrical input pins, tested per MIL-STD-883, Method 3015.4 /JESD22-A114-A (HBM). However, normal ESD precautions are still required during the handling of this module. This transceiver is shipped in ESD protective packaging. It should be removed from the packaging and handled only in an ESD protected environment.

6.2. LASER SAFTY

This is a Class 1 Laser Product according to IEC 60825-1:1993:+A1:1997+A2:2001. This product complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated (July 26, 2001)

6.3. Important Notice

Note:

1)Copper type maximum length recommended at 15 meters;

2)Various cable lengths available for all types;

3)Latch/tab available”on top”or”bottom”position.