VOOHU WH591H009D1S20 replaces TE (Tyco) 2170705-2: QSFP28 1×1 shielding cage (Cage) component comparison

1. Introduction to friendly products (TE Connectivity)

TE Connectivity is the world's leading manufacturer of connectors, sensors and interconnect solutions. Its 2170705 series is a QSFP28 1×1 Thru-Bezel shielding cage assembly that integrates EMI spring fingers, aluminum heat sinks and light guides. It is widely used in 100G switches, servers and optical module interfaces. This article benchmarks the material number TE 2170705-2 (according to the drawing BOM is SAN type radiator, single light guide column, 2 rear legs, PIN type): the cage is made of 0.25mm thick nickel silver alloy (Nickel Silver), the EMI shrapnel is copper alloy and nickel plated, the heat sink is aluminum, black anodized, the radiator clip is stainless steel, the light guide column is polycarbonate; compatible with QSFP28 MSA Optical module, product specification 108-19428, application specification 114-32023, minimum PCB thickness 1.57mm on one side / 2.20mm on both sides.

2. Introduction to VOOHU alternative products (Suzhou VOOHU Electronic Technology Co., Ltd.)

The WH591H009D1S20 of Suzhou VOOHU Electronic Technology Co., Ltd. (VOOHU) is a QSFP28 1×1 shielding cage assembly. It also integrates EMI shrapnel, aluminum heat sink and light guide column, and can be used as a domestic alternative to the TE 2170705 series. Its port opening size (18.75±0.1 × 8.90±0.1mm), panel opening (43.00±0.3mm) and component length (approximately 67.25mm) are consistent with TE 2170705-2 and comply with QSFP28 MSA (reference SFF-8663). The cage (upper/lower/partition) is 0.25mm thick stainless steel, EMI refers to stainless steel (surface cleaning + sealing), the radiator is aluminum, black anodized, the radiator clip is stainless steel, the light guide column is transparent polycarbonate (PC), the dust cover is thermoplastic 94V-0 black; the minimum PCB thickness is 1.60mm on one side / 3.0mm on both sides (Belly-to-Belly), REACH & RoHS Compliant.

3. Comparison of core parameters

The following table is based on the parameters listed in TE 2170705-2 customer drawings, and corresponds to the specifications of VOOHU WH591H009D1S20 (only parameters that are clearly marked by both parties and can be matched one-to-one are listed; configuration differences such as the number of light guide columns, radiator models, and mounting hole positions are shown in the "Note" after the table).

Note:

1. Number of light guides: The standard material number TE 2170705-2 according to its drawing BOM is "Single LP, SAN type radiator, 2 rear legs, PIN type"; the VOOHU WH591H009D1S20 drawing is "Quad LP". The TE 2170705 series also provides four light guide variants (the main view of the drawing shows 4-2170705-2 four light guides). The light guide/LED configuration is optional. Please confirm according to the panel LED requirements before replacement.
2. Installation/PCB hole location: TE 2170705 uses compliant crimp pins (Compliant Pin, Ø1.05 through hole); the PCB layout of the VOOHU drawing is a larger through hole (Ø2.67) and Ø2.20 positioning hole, tending to be soldered mounting feet. The panel openings of the two are the same (43.00±0.3mm), but the PCB hole positions and installation methods are different. Be sure to check the crimping/soldering method and hole diameter before replacement.
3. Radiator type: TE 2170705-2 is a SAN type radiator; this series also has PCI, Networking and other radiators with different fin/pin and light guide length options. The VOOHU drawings indicate that the heat sink is aluminum and black anodized, but does not indicate the specific model of SAN/PCI.
4. EMI shrapnel surface: TE shrapnel is Nickel Plating; VOOHU EMI shrapnel surface is cleaning and hole sealing. The process descriptions are different and are not included in the comparison table.
5. Differences in accessories: Some TE variants include an Organizer (polyester); VOOHU drawings indicate that the dust cover Cap is thermoplastic 94V-0 (black), and the Organizer is not listed.
6. Reference specifications: TE refers to its product specification 108-19428, application specification 114-32023; VOOHU refers to the industry MSA specification SFF-8663. Both are oriented to QSFP28 optical module interface.
7. Operating temperature: Both drawings do not indicate operating/storage temperature (passive shielding cage assembly, usually based on QSFP28 MSA and overall machine heat dissipation design).
8. The TE drawing version is D8 (2026-02-05), and individual configuration drawings are marked Preliminary (pre-release/not in mass production); for mass production selection, please refer to TE’s latest officially released specification confirmation status.

4. Applicable scenarios

1. QSFP28 optical/electrical ports for 100G data center switches and routers (100GbE, EDR InfiniBand, etc.).
2. 100G high-speed interconnect for servers, storage and high-performance computing (HPC).
3. Pluggable optical module interface for telecommunications/metro transmission and data center interconnection (DCI) equipment.
4. Active heat dissipation scenario for high-power optical modules: integrated aluminum heat sink + metal shielding cage + EMI shrapnel, taking into account both heat dissipation and EMI suppression.

5. Frequently Asked Questions (FAQ)

Q1: Can WH591H009D1S20 replace TE 2170705-2?

Both are QSFP28 1×1 through-panel shielding cages, with the same port opening (18.75×8.90mm), panel opening (43.00mm), and component length (approximately 67mm). They follow the QSFP28 MSA, and both integrate aluminum heat sinks (black anodized) + EMI shrapnel + light guides, and the mechanical interfaces are highly compatible. Please note: TE 2170705-2 is installed with a single light guide post and crimped pins, while VOOHU is installed with four light guide posts and larger through holes - please final check the PCB hole position, light guide / LED position and installation method before mass production.

Q2: How about heat dissipation and shielding?

Both integrate aluminum alloy heat sinks (black anodized) and metal shielding cages + EMI spring fingers to meet the heat dissipation and EMI suppression of QSFP28 high-speed ports. TE radiators are SAN type and provide PCI/Networking and other models; VOOHU radiators are aluminum and black anodized. If you need a specific radiator model or fin height, you can consult VOOHU for customization.

Q3: What is the difference between cage and shrapnel materials?

The TE cage body is made of nickel silver alloy (0.25mm), and the spring pieces are made of nickel-plated copper alloy; the VOOHU cage body is made of stainless steel (0.25mm), and the spring pieces are made of stainless steel. The material thickness is consistent (0.25mm), which meets the shielding and structural strength requirements of QSFP28.

Q4: What installation methods are supported?

Both support single-sided installation and belly-to-belly (back-to-back) installation; TE minimum PCB thickness is 1.57 single-sided / 2.20mm double-sided, VOOHU single-sided 1.60 / belly-to-belly 3.0mm. The mounting feet/crimping holes are different (see "Note"), please check with the actual PCB.

Q5: Does it support customization and proofing?

support. VOOHU is sold directly from the original factory and can be customized according to the number of light guide columns, radiator model/fins, installation method, etc.; sample orders are shipped within 48 hours and delivered within 7 days. For details, please contact VOOHU (www.voohu.cn, technical support email voohu@voohu.cn).

WHY CHOOSE VOOHU?

One-stop purchasing:Covering connectors + magnetic components + interface chips, full support from selection to small batches.

Customized on demand:Just provide application requirements and budget, and you can get customized solutions and professional technical support.

Rapid R&D:Direct sales from the original factory, fast FAE response, efficient samples, and shortened product launch cycle.

Core qualifications:ISO9001, ISO14001, RoHS, REACH, two self-owned factories guarantee delivery time and quality.

For more inquiries, please visit VOOHU official website:China www.voohu.cn - Overseas www.voohuele.com - Technical support email: voohu@voohu.cn