Imported from GitHub: mwrnd/SFP_Plug_Breakout · commit ab6f4c0 · license BSD-2-Clause

Description

Pluggable SFP Module Breakout

README

Work-in-Progress - First Revision gerbers being tested.

SFP_Plug_Breakout

Pluggable SFP (SFF INF-8074i) and SFP+ (SFF-8432) Module Breakout for developing SFP modules. PCB must be manufactured with a 1.0mm thickness.

Similar Projects: SFP-Breakout-Board, SFP_BreakoutBoard, SFP-Loopback-Board, and Sfp-breakout(osmocom.org).

One trivial use is an SFP Loopback:

PCB Layout

Differential pair parameters were calculated based on a board thickness of 1.0mm.

Schematic

The 0.1" Header is designed to accept jumpers for the TX_FAULT, RX_LOSS, TX_DISABLE, and optionally Rate-Select signals. TX_FAULT, RX_LOSS, and TX_DISABLE jumpers need to be mounted for normal operation.

Bill Of Materials

I have been testing with general purpose capacitors for the RX and TX DC-Blocking capacitors (C1, C2, C3, C4) but at <10Gbps bitrates. Capacitors will need to be sized smaller, 0402 or even 0201, and more effort would need to go into their selection for high bitrates. Look for capacitors designed for high-frequency.

Designator(s)	Part Number	Quantity	Value	Footprint	Availability
C1, C2, C3, C4	GRM1885C1H103JA01D	4	0.01uF	Capacitor_SMD:C_0603_1608Metric	DigiKey
R1, R2, R3	RMCF0603ZT0R00	3	0-Ohm	Resistor_SMD:R_0603_1608Metric	DigiKey
R10, R11, R12	RNCF0603DTE10K0	3	10k-Ohm	Resistor_SMD:R_0603_1608Metric	DigiKey
J6	PH2-12-UA	1	N/A	Conn_02x06	DigiKey
J2, J3, J4, J5	CONUFL001-SMD-T	4	N/A	U.FL_w_Label:U.FL_Hirose_w_Label	DigiKey
None	QPC02SXGN-RC	4	N/A	1x2 0.1" Jumper	DigiKey
U.FL-to-U.FL	2015698-2	2	N/A	None - Optional Part for Testing	DigiKey