Application Specification Stacked Small Form- Factor Pluggable (SFP) Connector and Cage Assembly NOTE i 114-- 13103 22 FEB 10 Rev E All numerical values are in metric units [with U.S. customary units in brackets]. Dimensions are in millimeters. Unless otherwise specified, dimensions have a tolerance of +0.13 and angles have a tolerance of +2_. Figures and illustrations are for identification only and are not drawn to scale. 1. INTRODUCTION This specification covers the requirements for application of stacked SFP Connector and Cage Assemblies to interconnect SFP fiber optic or copper transceiver modules to printed circuit (pc) boards. The SFP Connector and Cage Assembly is a pre--assembled unit available in a 21, 24, or 26 configuration in standard or low--profile. The SFP Connector and the Cage Assembly is available separately for rework purposes. SFP Connector and Cage Assemblies are also available with light pipes. The cage assembly features compliant pin contacts for mechanical retention to the pc board and to provide electromagnetic interference (EMI) suppression, thermal vent holes, and panel ground springs. In addition, the cage assembly has a locking latch and a kick--out spring for each mating module. The locking latch holds the module in place, and the kick--out spring releases the module for removal. A dust cover (for each port) is used when the module is not mated to the cage assembly to prevent contaminants from entering the chassis. The SFP Connector and Cage Assembly is designed to be inserted into a bezel after being seated onto the pc board. The connector consists of a housing with dual 20--position receptacle ports and compliant pin contacts on 0.8 mm centerline spacing. The housing features alignment posts that provide stability for placement on the pc board. Each receptacle port has a card entry slot that accepts a 1.0+0.1 mm thick integrated circuit card housed in the mating module. When corresponding with Tyco Electronics Personnel, use the terminology provided in this specification to facilitate your inquiries for information. Basic terms and features of this product are provided in Figure 1. 21 Configuration Connector and Cage Assembly 24 Configuration Cage Assembly Dust Cover 26 Configuration Connector Figure 1 (cont'd) TOOLING ASSISTANCE CENTER 1-- 800-- 722-- 1111 E2010 Tyco Electronics Corporation, Berwyn, PA PRODUCT INFORMATION 1-- 800-- 522-- 6752 All International Rights Reserved TE logo and Tyco Electronics are trademarks. *Trademark. Other product names, logos, or company names might be trademarks of their respective owners. This controlled document is subject to change. For latest revision and Regional Customer Service, visit our website at www.tycoelectronics.com 1 of 11 LOC B Stacked SFP Connector and Cage Assembly 114- 13103 Cage Assemblies 21 Configuration Compliant Pin Contacts 24 Configuration Kick-- Out Spring Standoffs Connector Housing Card Entry Slot Card Entry Slot Alignment Post (2 Places) Port Thermal Vent Holes Panel Ground Springs Compliant Pin Contacts Module Locking Latch Port Figure 1 (end) 2. REFERENCE MATERIAL 2.1. Revision Summary S Updated document to corporate requirements S Deleted reference document in Section 1, INTRODUCTION 2.2. Customer Assistance Reference Product Base Part Number 1658390 and Product Code K221 are representative of Stacked SFP Connector and Cage Assembly. Use of these numbers will identify the product line and expedite your inquiries through a service network established to help you obtain product and tooling information. Such information can be obtained through a local Tyco Electronics Representative or, after purchase, by calling Product Information at the number at the bottom of page 1. 2.3. Drawings Customer Drawings for product part numbers are available from the service network. If there is a conflict between the information contained in the Customer Drawings and this specification or with any other technical documentation supplied by Tyco Electronics, the information contained in the customer drawings takes priority. 2.4. Specifications Product Specification 108--2161 provides product performance and test information for the SFP Connector and Cage Assembly. 2.5. Instructional Material Instruction Sheets (408--series) provide product assembly instructions or tooling setup and operation procedures. Available documents which pertain to this product are: Document Number 408--8848 408--8849 408--8850 2 of 11 Document Title SFP PT Connector and Cage Assembly Seating Tool Kits SFP Cage Assembly Extraction Tools SFP PT Connector Extraction Tool 1725480--1 Tyco Electronics Corporation Rev E Stacked SFP Connector and Cage Assembly 114- 13103 3. REQUIREMENTS 3.1. Safety Do not stack component packages so high that the shipping containers buckle or deform. 3.2. Limitations The connectors are designed to operate in a temperature range of --55_ to 105_C [--67_ to 221_F]. The bezel requirements given in this document are specifically configured for products used in the communications industry. It is strongly recommended that this bezel configuration NOT be used for peripheral component interconnect (PCI) applications. 3.3. Material The connector housing and chicklets (parts that hold the compliant pin contacts) are made of molded thermoplastic, UL 94--V--0. All compliant pin contacts in the connector are made of phosphor bronze underplated with nickel; plated with tin at the leads and plated with gold at the interface area. The cage assembly is made of copper alloy plated with tin. The dust cover is made of thermoplastic. 3.4. Storage A. Ultraviolet Light Prolonged exposure to ultraviolet light may deteriorate the chemical composition used in the connector material. B. Shelf Life The connector and cage assembly should remain in the shipping container until ready for use to prevent deformation to the compliant pin contacts and mounting posts. The connector and cage assemblies should be used on a first in, first out basis to avoid storage contamination that could adversely affect performance. 3.5. Chemical Exposure Do not store connector and cage assemblies near any chemical listed below as they may cause stress corrosion cracking in the compliant pin contacts or mounting posts. Alkalies Amines Ammonia Carbonates Citrates Nitrites Phosphates Citrates Sulfur Nitrites Sulfur Compounds Tartrates 3.6. PC Board A. Material and Thickness The pc board material shall be glass epoxy (FR--4 or G--10). The minimum pc board thickness shall be 1.5 mm. NOTE Contact Product Information at the number at the bottom of page 1 for suitability of other board materials. i B. Tolerance Maximum allowable bow of the pc board shall be 0.08 mm over the length of the connector and cage assembly. C. Hole Dimensions The holes for the connector signal contacts and cage assembly must be drilled and plated through to dimensions specified in Figure 2. D. Layout The holes for the connector and cage assembly must be precisely located to ensure proper placement and optimum performance of the connector and cage assembly. Recommended hole pattern, dimensions, and tolerances are provided on the customer prints. Sample layouts are provided in Figure 3. Rev E Tyco Electronics Corporation 3 of 11 Stacked SFP Connector and Cage Assembly 114- 13103 Recommended Hole Dimensions For Connector 1.00 Ref Pad Diameter 0.7 +0.02 Drilled Hole Diameter 0.6 (Ref) Finished Hole Diameter After Plating 0.025-- 0.050 Copper Plating (Max Hardness 150 Knoop) 0.004-- 0.010 Hot Air Solder Leveling (HASL) Tin-- Lead (SnPb) 0.0005 (Min) Immersion Tin (Sn) 0.0002-- 0.0005 Organic Solderability Preservative (OSP) 0.004-- 0.0076 Nickel (Ni), 0.0001-- 0.0005 Immersion Gold (Au) Recommended Hole Dimensions For Cage Assembly 1.15 +0.02 Drilled Hole Diameter 1.05 (Ref) Finished Hole Diameter After Plating 0.025-- 0.050 Copper Plating (Max Hardness 150 Knoop) 0.004-- 0.010 Hot Air Solder Leveling (HASL) Tin-- Lead (SnPb) 0.0005 (Min) Immersion Tin (Sn) 0.0002-- 0.0005 Organic Solderability Preservative (OSP) 0.004-- 0.0076 Nickel (Ni), 0.0001-- 0.0005 Immersion Gold (Au) Figure 2 4 of 11 Tyco Electronics Corporation Rev E Stacked SFP Connector and Cage Assembly 114- 13103 Recommended PC Board Layout Connector T1 = Top Connector - Pin 1 L20 = Lower Connector - Pin 20 11 4X 1.9 0 35X 1.25 - E-- TYP 0.8 0 19 Pin T20 Pin T1 17 18 2 7 Pin T10 3 6 4 16 Pin L1 2 18 15 7.5 9 5 14 13 12 8 5 8 55_ 42.8i 14 6 7 12 13 16 3 9 2X 1.85+0.05 0.1 X Y - D-- 15 4 Pin L10 Pin T11 17 Pin L20 19 40X 0.6+0.05 0.08 M D S E S Pin L11 Connector and Cage Assembly 21 Configuration 17X See Connector PC Board Layout 1.05+0.05 0.1 Z - X-3X 4.5 7.125 Pin T11 14.25 4 11.075 Pin L11 0 4 8.575 0 5.675 1.625 - Y-- 10X 8 2X 25.675 1 BSC 1.05+0.05 - Z-- 42.1 3X 51.625 Figure 3 (Cont'd) Rev E Tyco Electronics Corporation 5 of 11 Stacked SFP Connector and Cage Assembly 114- 13103 Connector and Cage Assembly 24 Configuration 4X 7.125 4X 4 1 See Connector PC Board Layout 4X 4 BSC 12X 51.625 4X 42.1 8X 25.675 25X 8 9X 4.5 - Y-1.05 +0.05 0.1 X Y - Z-- - X-53X 4X 1.625 1.05+0.05 0.1 Z 4X 5.675 4X 8.575 4X 11.075 20X 14.25 1 Datum and Basic Dimension Determined by Customer Figure 3 (End) 3.7. Transceiver Modules CAUTION ! 6 of 11 The mating transceiver module packing size cannot exceed the width of each cage port opening. This includes the part of the transceiver that is extending outside the cage. Since the port--to--port spacing has a 14.25 mm centerline, the widest transceiver width extending outside of the cage should be less than 14 mm. This will prevent any possible interference when transceivers are inserted in adjacent ports. Tyco Electronics Corporation Rev E Stacked SFP Connector and Cage Assembly 114- 13103 3.8. Bezel CAUTION ! It is strongly recommended that this bezel configuration NOT be used in PCI applications. The following requirements were intended to be used in the communications industry only. A. Thickness The bezel thickness range shall be 0.8 through 2.6 mm. B. Cutout The bezel must provide a cutout that allows proper mounting of the connector and cage assembly. The cage assembly panel ground springs must be compressed by the bezel in order to provide an electrical ground between the connector and cage assembly and bezel for EMI suppression. Care must be used to avoid interference between adjacent connector and cage assemblies and other components. The minimum allowable distance between connector and cage assemblies must be considered to ensure proper assembly. Dimensions for bezel cutout and minimum allowable distance between cutouts are shown in Figure 4. 3.9. PC Board and Bezel Position The bezel and pc board must be positioned in relation to each other to avoid interference with the function of the cage assembly module locking latch and to ensure proper function of the panel ground springs. This relationship must conform to the dimensions stated in Figure 4. Note: Not to Scale Recommended Bezel Cutout (Minimum Pitch) and PC Board and Bezel Position Bezel Thickness: 0.8-- 2.6 mm 0.30 Maximum Radius (4 Places) A Section Y--Y Y Cutout in Bezel C D (Ref) PC Board Y B (Min) Cutout Centerline to Cutout Centerline PC Board CONNECTOR AND CAGE ASSEMBLY 0.125+0.1 (Bottom of Cutout in Bezel to Top of PC Board) 2.9+0.9 (Distance Between Back of Bezel and Front of PC Board) DIMENSION (+0.1) TYPE CONFIGURATION 21 A 15.25 B (Min) 16.5 C 26 D (Ref) 25.875 Standard Sta da d 24 58 86.5 15.25 59.25 87.75 16.5 26 26 23.05 25.875 25.875 22.925 58 59.25 23.05 22.925 86.5 87.75 23.05 22.925 26 21 Low--Profile o o e 24 26 Figure 4 Rev E Tyco Electronics Corporation 7 of 11 Stacked SFP Connector and Cage Assembly 114- 13103 3.10. Placement The following requirements also apply to connectors and cage assemblies used for rework purposes. CAUTION ! Connectors should be handled only by the housing to avoid deformation, contamination, or damage to the compliant pin contacts. A. Registration The compliant pin contacts and mounting posts must be aligned with matching holes in the pc board, then inserted into the pc board simultaneously to prevent twisting or bending of the compliant pin contacts. B. Seating Using proper seating force and seating height is essential to interconnection performance. The force used to seat the connector and cage assembly must be applied evenly to prevent deformation or other damage to the compliant pin contacts. The force required to seat the connector and cage assembly onto the pc board can be calculated by: Amount of Compliant Pin Contacts 44.5 N [10 lbs] (Force per Compliant Pin Contact) = Seating Force CAUTION ! Over--driving of the connector and cage assembly will deform parts critical to the quality of the connection. Maximum force occurs prior to the connector and cage assembly bottoming on the pc board. The shut height of the application tool must be specifically set for proper seating of the connector and cage assembly. The shut height can be calculated by: Seating Height (Connector and Cage Assembly Seated) + Height of Seating Tool + Combined Thicknesses of PC Board and PC Board Support Fixture = Shut Height (Ram Down) The seating height, measured from the top of the cage assembly (not including the panel ground springs) to the top of the pc board, is given in Figure 5. The connector and cage assembly must be seated on the pc board not exceeding the dimensions shown in Figure 5. NOTE The shut height may need to be adjusted to obtain the 0.10 mm maximum gap between the standoffs of the cage assembly and the pc board. i Cage Assembly A (See Table) Seating Height (Top of Cage Assembly, Not Including Panel Ground Springs, to PC Board) 0.10 (Max) Gap Cage Assembly Standoffs to PC Board Connector Mounting Posts Compliant Pin Contacts Figure 5 8 of 11 Tyco Electronics Corporation CONNECTOR AND CAGE ASSEMBLY TYPE DIMENSION A Standard 25.5 Low--Profile 22.55 Rev E Stacked SFP Connector and Cage Assembly 114- 13103 3.11. Checking Assembly After assembly, the cage assembly panel ground springs must be compressed by the bezel. A slight bow in the cage assembly is permitted. The bezel must not interfere with the function of the module locking latch. The bezel and pc board must positioned according to the dimensions shown in Figure 6. Front View Bezel Side View Bezel Cutout Cage Assembly Module Locking Latch Slightly Raised Cage Assembly Panel Ground Springs Compressed By Bezel A (Ref) Cage Assembly 0.125+0.1 (Bottom of Cutout in Bezel to Top of PC Board) PC Board CONNECTOR AND CAGE ASSEMBLY TYPE DIMENSION A +0.1 mm (REF) Standard 25.875 mm Low--Profile 22.925 mm 2.9+0.9 (Distance Between Back of Bezel and Front of PC Board) PC Board Figure 6 3.12. Dust Cover A dust cover must be installed into its respective port when the module is not mated with the cage assembly. 3.13. Repair and Rework Damaged or defective connector and cage assemblies must be removed and replaced. If repair or rework to the pc board requires soldering after the connector and cage assembly has been seated onto the pc board, the following must apply: -- After soldering, removal of fluxes, residues, and activators is necessary. Consult with the supplier of the solder and flux for recommended cleaning solvents. Cleaners must be free of dissolved flux and other contaminants. Even when using a "no clean" solder paste, it is imperative that the contact interface be kept clean of flux and residue (since it acts as an insulator). DANGER Consideration must be given to toxicity and other safety requirements recommended by the solvent manufacturer. Refer to the manufacturer's Material Safety Data Sheet (MSDS) for characteristics and handling of cleaners. Trichloroethylene and Methylene Chloride is not recommended because of harmful occupational and environmental effects. Both are carcinogenic (cancer--causing). -- Air drying is recommended. Otherwise, make sure that temperature limitations are not exceeded: --55_ to 105_C [--67_ to 221_F]. Excessive temperatures may cause housing degradation. 4. QUALIFICATION SFP Connectors are Recognized by Underwriters Laboratories Inc. (UL) in File No. E28476. Rev E Tyco Electronics Corporation 9 of 11 Stacked SFP Connector and Cage Assembly 114- 13103 5. TOOLING Tooling part numbers and instructional material packaged with the tooling are given in Figure 7. 5.1. Seating Tool Kits The seating tool kits (each consists of a seating tool and wall support) are used to seat the connector and cage assembly onto the pc board. The seating tool and wall support are also available separately. For rework purposes, the seating tool can be used to seat the cage assembly. Flat rock tooling is needed to insert the connector during rework. 5.2. Extraction Tool The extraction tool is used to remove the cage assembly or connector from the pc board by pushing the contacts out of their holes without overstressing the contacts. 5.3. Application Tool Power for the seating tools and extraction tools must be provided by an application tool (with a ram) capable of supplying a downward force of 44.5 N [10 lb] per contact. For available application tools, call Product Information at the number at the bottom of page 1. 5.4. PC Board Support Fixture A pc board support must be used with the seating tool and the extraction tool. The support fixture provides proper support for the pc board and protects the pc board and the connector and cage assembly from damage. The support fixture must be customer designed. It is recommended that the support fixture be at least 25.4 mm longer and wider than the pc board and have flat surfaces with holes or a channel large enough and deep enough to receive any protruding components of the connector and cage assembly. Connector Extraction Tool 1725480-- 1 (408-- 8850) Cage Assembly Extraction Tool (Refer to Table) (408-- 8849) Seating Tool Kit (Refer to Table) (408-- 8848) CONNECTOR AND CAGE ASSEMBLY TYPE Standard Low--Profile SEATING TOOL KIT CAGE ASSEMBLY EXTRACTION TOOL 21 1490197--2 1725194--2 24 1490197--1 1725194--1 26 1804875--1 1804086--1 21 1725616--1 1725194--2 24 1725618--1 1725194--1 26 1804419--1 1804086--1 CONFIGURATION Figure 7 10 of 11 Tyco Electronics Corporation Rev E Stacked SFP Connector and Cage Assembly 114- 13103 6. VISUAL AID Figure 8 shows a typical application of stacked a SFP Connector and Cage Assembly. This illustration should be used by production personnel to ensure a correctly applied product. Applications which DO NOT appear correct should be inspected using the information in the preceding pages of this specification and in the instructional material shipped with the product or tooling. Note: Connector and Cage Assembly 2x4 Configuration Shown Requirements Also Apply to 2x1 Configuration and 2x6 Configuration CONNECTOR AND CAGE ASSEMBLY MUST NOT BE DAMAGED IN ANY WAY SLIGHT BOW IN CAGE ASSEMBLY PERMITTED ALL COMPLIANT PIN CONTACTS AND ALIGNMENT POSTS MUST BE FULLY INSERTED INTO MATCHING PC BOARD HOLES CAGE ASSEMBLY PANEL GROUND SPRINGS MUST BE COMPRESSED BY BEZEL BEZEL MUST NOT INTERFERE WITH FUNCTION OF CAGE ASSEMBLY MODULE LOCKING LATCHES DUST COVER (NOT SHOWN) MUST BE INSTALLED IN ITS RESPECTIVE PORT WHEN MODULE IS NOT MATED WITH CAGE ASSEMBLY FIGURE 8. Rev E VISUAL AID Tyco Electronics Corporation 11 of 11