IP Library Granted Patent US 12,288,954
Granted Patent B2
US 12,288,954 · App. 17/761,036 · Granted Apr 29, 2025

Secondary side heatsink techniques for optical and electrical modules

Inventors: Mitchell O'Leary (Ottawa, CA); Victor Aldea (Ottawa, CA); Kamran Rahmani (Kanata, CA); Trevor Meunier (Kemptville, CA); Peter Ajersch (Ottawa, CA); Terence Graham (Manotick, CA); Marc Leclair (Gatineau, CA)
Assignee: Ciena Corporation
H01R4/48H01L23/40H01R4/30
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,288,954
App. No.
17/761,036
Granted
Apr 29, 2025
Kind
B2
Abstract

A module for use in a hardware platform for networking, computing, and/or storage includes a printed circuit board assembly having a primary side and a secondary side, wherein the primary side includes more physical space, in a vertical direction extending out from the printed circuit board assembly, than the secondary side; electrical and/or optical components disposed on the primary side of the printed circuit board assembly; and a secondary side heatsink located on and extending from the secondary side, wherein the secondary side heatsink is disposed to one of i) an electrical and/or optical component disposed on the secondary side, and ii) an optical component disposed on the primary side, for thermal management.

Claims (27)

1. A system for use in a hardware platform for networking, computing, and/or storage, the system comprising:

a printed circuit board assembly having a primary side and a secondary side, wherein the primary side includes more physical space, in a vertical direction extending out from the printed circuit board assembly, than the secondary side;

one or more optical components disposed on a surface of the printed circuit board assembly on the primary side of the printed circuit board assembly, wherein the optical components include a pluggable optical module which is removable from the printed circuit board assembly; and

a secondary side heatsink located on and extending from the secondary side, wherein the secondary side heatsink is in thermal communication with and disposed via a direct thermal interface opposite of the pluggable optical module disposed on the primary side, for thermal management, when the pluggable module is inserted.

2. The system of claim 1 , wherein the secondary side heatsink is floating under a spring force including attachment components disposed on the primary side.

3. The system of claim 2 , wherein the attachment components are located through holes in the printed circuit board assembly.

4. The system of claim 1 , wherein the secondary side heatsink includes an adjustable vertical height relative to the optical component via an adjustable mechanical interface.

5. The system of claim 4 , wherein the adjustable mechanical interface is a set screw and cylindrical post.

6. The system of claim 4 , wherein the adjustable vertical height is set via the adjustable mechanical interface and is based on a thickness of the printed circuit board assembly.

7. The system of claim 1 , wherein the secondary side heatsink protrudes through a hole in the printed circuit board assembly to attach to the some of the optical components.

8. The system of claim 1 , wherein the printed circuit board assembly and the components are in a pluggable optical module compliant to a multi-source agreement.

9. The system of claim 8 , further comprising a cage for housing the pluggable optical module, wherein the secondary side heatsink protrudes through a hole in the cage.

10. The system of claim 1 , wherein the printed circuit board assembly, the components, and the secondary side heatsink are in a pluggable optical module compliant to a multi-source agreement.

11. A method comprising:

providing a system for use in a hardware platform for networking, computing, and/or storage, the system comprising:

a printed circuit board assembly having a primary side and a secondary side, wherein the primary side includes more physical space, in a vertical direction extending out from the printed circuit board assembly, than the secondary side;

one or more optical components disposed on a surface of the printed circuit board assembly on the primary side of the printed circuit board assembly, wherein the optical components include a pluggable optical module which is removable from the printed circuit board assembly; and

a secondary side heatsink located on and extending from the secondary side, wherein the secondary side heatsink is in thermal communication with and disposed via a direct thermal interface opposite of the pluggable optical module disposed on the primary side, for thermal management, when the pluggable module is inserted.

12. The method of claim 11 , wherein the secondary side heatsink is floating under a spring force including attachment components disposed on the primary side.

13. The method of claim 12 , wherein the attachment components are located through holes in the printed circuit board assembly.

14. The method of claim 11 , wherein the secondary side heatsink includes an adjustable height.

15. The method of claim 14 , wherein the adjustable height is based on a set screw.

16. The method of claim 14 , wherein the adjustable height is based on a thickness of the printed circuit board assembly.

17. The method of claim 11 , wherein the secondary side heatsink protrudes through a hole in the printed circuit board assembly to attach to the some of the optical components.

18. The method of claim 11 , wherein the printed circuit board assembly and the components are in a pluggable optical module compliant to a multi-source agreement.

19. The method of claim 18 , further comprising a cage for housing the pluggable optical module, wherein the secondary side heatsink protrudes through a hole in the cage.

20. The method of claim 11 , wherein the printed circuit board assembly, the components, and the secondary side heatsink are in a pluggable optical module compliant to a multi-source agreement.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 16, 2022
From: O'LEARY, MITCHELL; ALDEA, VICTOR; RAHMANI, KAMRAN; MEUNIER, TREVOR; AJERSCH, PETER; GRAHAM, TERENCE; LECLAIR, MARC
To: CIENA CORPORATION
Reel/Frame 059284/0974 →
Continuity (2)
Continuation 16571722 · Sep 16, 2019
Related Publication 20220352651A1 · Nov 3, 2022
References Cited (19)
US 4731693A · Berg · 1988 [cited by examiner]
US 6831844B1 · Lee et al. · 2004 [cited by applicant]
US 9295178B1 · Aldea et al. · 2016 [cited by applicant]
US 9759235B2 · Saturley et al. · 2017 [cited by applicant]
US 10070553B2 · Lee et al. · 2018 [cited by applicant]
US 20040173901A1 · Mallik · 2004 [cited by examiner]
US 20040174679A1 · Hung · 2004 [cited by examiner]
US 20050133252A1 · Ajersch et al. · 2005 [cited by applicant]
US 20090116194A1 · Matsushiba · 2009 [cited by examiner]
US 20100309635A1 · Sasaki · 2010 [cited by examiner]
US 20110114294A1 · Degner · 2011 [cited by examiner]
US 20140161408A1 · Aoki · 2014 [cited by examiner]
US 20180007776A1 · Gareau et al. · 2018 [cited by applicant]
US 20190013442A1 · Morita · 2019 [cited by examiner]
US 20190274216A1 · Kubota · 2019 [cited by examiner]
US 20190364656A1 · Robin · 2019 [cited by examiner]
US 20210112315A1 · Mays · 2021 [cited by examiner]
WO 2015012792A1 · 2015 [cited by applicant]
Dec. 2, 2020, International Search Report and Written Opinion for International Patent Application No. PCT/US2020/049852. [cited by applicant]