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40G QSFP DAC Cable
QSFP+ Direct Attach Cables are compliant with the SFF-8436 specifications. SFP+ Direct Attach Cables are compliant with the SFF-8431, SFF-8432 and SFF-8472 specifications. Various choices of wire gauge are available from 30 to 24 AWG with various choices of cable length (up to 7m).
40G QSFP+ DAC Pin Function Definition
Products Features
- Compliant with SFF- 8436, SFF-8431, SFF-8432 and SFF-8472
- Up to 10. 3125Gbps data rate per channel
- Up to 7m transmission
- Operating temperature: 0~70℃
- Single 3.3V power supply
- RoHS compliant
General Product Specifications
| Number of Lanes | Tx& Rx |
| Channel Data Rate | 10.3125 Gbps |
| Operating Temperature | 0 to + 70°C |
| Storage Temperature | -40 to + 85°C |
| Supply Voltage | 3.3 V nominal |
| Electrical Interface |
38 pins edge connector(QSFP+) 20 pins edge connector(SFP+) |
| Management Interface | Serial, I^2 C |
High Speed Characteristics
| Parameter | Symbol | Min | Typ. | Max. | Notes |
| Differential Impedance | Zd | 90Ω | 100Ω | 110Ω | |
| Differential Input Return Loss | SDDXX | <-12+2* SQRT (f) with f in GHz | 0.01~4.1GHz | ||
|
<-6.3+13* Log10/(f/5.5) with f in GHz |
4.1~11.1GHz | ||||
| Common Mode Output Return Loss | SCCXX | < -7+1.6*f with f in GHz | 0.01~2.5GHz | ||
| -3 | 2.5~11.1GHz | ||||
| Difference Waveform Distortion Penalty | dWDPc | 6.75 | |||
| VMA Loss | L | 4.4 | |||
| VMA Loss to Crosstalk Ratio | VCR | 3.25 | |||
Product Advantages
- Cost-effective copper solution
- Lowest total system power solution
- Lowest total system EMI solution
- Optimized design for Signal Integrity
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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General Product Specifications
| Number of Lanes | Tx& Rx |
| Channel Data Rate | 10.3125 Gbps |
| Operating Temperature | 0 to + 70°C |
| Storage Temperature | -40 to + 85°C |
| Supply Voltage | 3.3 V nominal |
| Electrical Interface |
38 pins edge connector(QSFP+) 20 pins edge connector(SFP+) |
| Management Interface | Serial, I^2 C |
High Speed Characteristics
| Parameter | Symbol | Min | Typ. | Max. | Notes |
| Differential Impedance | Zd | 90Ω | 100Ω | 110Ω | |
| Differential Input Return Loss | SDDXX | <-12+2* SQRT (f) with f in GHz | 0.01~4.1GHz | ||
|
<-6.3+13* Log10/(f/5.5) with f in GHz |
4.1~11.1GHz | ||||
| Common Mode Output Return Loss | SCCXX | < -7+1.6*f with f in GHz | 0.01~2.5GHz | ||
| -3 | 2.5~11.1GHz | ||||
| Difference Waveform Distortion Penalty | dWDPc | 6.75 | |||
| VMA Loss | L | 4.4 | |||
| VMA Loss to Crosstalk Ratio | VCR | 3.25 | |||
