Postek (HK) Co., Limited | VPX Series

HK-VPX Ruggedized Hybrid Electro-Optic Connector

Name: HK-VPX
Brand: Postek (HK) Co., Limited
SKU: HK-VPX

Modular Architecture · VITA 46/48/66/67 · 6.25–10 Gbps · Press-Fit Termination

Differential, Single-Ended, Power, RF, Fiber 32 Diff Pairs/Module Solderless Press-Fit VITA Standards Compliant

📄 Download Datasheet 📦 Request Quote

HK-VPX Ruggedized Hybrid Electro-Optic Connector

HK-VPX Connector Assembly Overview

1. Product Overview

✅ Source Verified — Technical data verified against official supplier datasheet HK-VPX.pdf. All parameters traceable to source document.

The HK-VPX Series is a ruggedized, open-architecture hybrid electro-optic connector system designed for high-reliability applications in flight systems, high-altitude platforms, and other demanding industrial environments. Conforming to VITA 41, VITA 46, VITA 48, VITA 66, and VITA 67 standards, the series provides a user-configurable, modular platform that integrates differential, single-ended, power, RF, and fiber optic signals within a single connector envelope. The high-speed differential modules utilize a solderless press-fit termination, supporting data rates up to 6.25 Gbps, extendable to 10 Gbps.

Data Rate 6.25 Gbps (extendable to 10 Gbps)

Differential Pairs per Module 32 pairs

Node Density 113/inch (56 pair/inch)

Termination Solderless Press-Fit

RF Module Standard VITA 67

Fiber Module Standard VITA 66 (MT Ferrules)

Key Features

Open architecture, user-configurable modular design — mix differential, single-ended, power, RF, and fiber signals

High-speed differential modules with solderless press-fit termination — 32 pairs per module, 113 nodes/inch density

Data rates up to 6.25 Gbps, extendable to 10 Gbps for high-bandwidth interconnects

RF modules compliant with VITA 67 — floating contact design, rear insertion/removal, stable phase and insertion loss

Fiber optic modules compliant with VITA 66 — high-density MT ferrules supporting 12 or 24 optical channels

Multiple shell material and plating options — aluminum alloy with nickel plating or stainless steel passivated

8 keying positions per keying zone to prevent mismating in high-density system architectures

2. Technical Specifications

2.1 General Connector Specifications 📄 Datasheet P.45–57

Parameter	Specification
Standard Compliance	VITA 41, VITA 46, VITA 48, VITA 66, VITA 67
Modular Signal Types	Differential, Single-Ended, Power, RF, Fiber Optic
Data Rate (Differential)	6.25 Gbps (extendable to 10 Gbps)
Differential Pairs per Full Module	32 pairs
Node Density	113/inch (56 pair/inch)
Contact Pitch — Plug	1.35 mm (row) × 1.8 mm (column)
Contact Pitch — Receptacle	1.8 mm × 1.8 mm
Termination Style (Non-Fiber Modules)	Solderless press-fit
Fiber Termination Style	MT ferrule, optical cable (default)
Shell Material & Plating	Aluminum alloy, nickel plating (standard); Stainless steel, passivated (optional)
Daughter Card Thickness (Plug)	1.6–2.6 mm (standard); 2.6–3.5 mm (option -02)
Keying Positions	8 positions per keying zone (A–H or 1–8)

2.2 Module Type Code Reference 📄 Datasheet P.46

Plug Code	Receptacle Code	Position	Description
a	e / f	P0 / J0	Half module, basic module: 6 power / 16 single-ended / 4 differential pairs
A	I / J	P1–P6 / J1–J6	Differential full module: 32 differential pairs / 8 single-ended
B	I / J	P1–P6 / J1–J6	Single-ended full module: 80 single-ended
C	I / J	P1–P6 / J1–J6	Default combination full module: 6 power / 20 single-ended / 20 differential pairs
D	D	P2–P6 / J2–J6	8 × #12 RF or fiber contacts (contacts ordered separately). Recommended P2 or P6.
G	G	P2–P6 / J2–J6	2 × MT fiber contacts. Recommended P2 or P6.
G4	G4	P2–P6 / J2–J6	4 × MT fiber contacts. Recommended P2 or P6.
N	N	P2–P6 / J2–J6	16-column blank module (filler for standard 3U/6U size)

⚠️ Important: RF contacts, fiber optic contacts, and extraction tools are ordered separately and are not supplied with the connector body. Refer to the downloadable datasheet for complete ordering codes and backplane module variants (b, c, E, F, H, K, L, M).

2.3 RF Module Specifications 📄 Datasheet P.48

Parameter	Specification
Standard Compliance	VITA 67
Contact Design	Floating structure, rear insertion/removal
Insertion/Removal	Tool-less insertion; extraction tool QX-RF-12 (ordered separately)
Performance Characteristics	Stable phase and insertion loss
Recommended Strip Dimensions	Center conductor: 2 mm; Shield: 4.5 mm
Center-to-Shield Offset	0.2^+0.05₀ mm

2.4 Fiber Optic Module Specifications 📄 Datasheet P.49–50

Parameter	Specification
Standard Compliance	VITA 66
Ferrule Type	High-density MT
Channels per MT Ferrule	12 or 24 optical channels
Transmission Modes	Single-mode (G.652D), Single-mode (G.657A2), Multimode 62.5/125, Multimode 50/125, Multimode 50/125 (OM3)
Contact Engagement	Elastic contact for reliable performance under vibration and shock
Minimum Bend Radius	1.27 mm (fiber); ≥ 10× cable diameter (cable assembly)
Installation Screw Torque	M2 screws; removable thread-locking compound recommended

3. Nomenclature & Ordering Code

Part Number Structure

Example: VPX-61T8aAB8AAAG8-A

Example: VPX-61Z8eIJ8IIJD8-A

Segment	Code	Description
Series	VPX	Ruggedized hybrid electro-optic connector series
Module Count	61	First digit = full modules (6, 2, 4, 3); Second digit = half modules (1, 0). Example: 6 full + 1 half.
Header/Receptacle Type	T / Z / RT / RZ / LT / LZ	T = Plug; Z = Receptacle; RT = Rear-mount plug; RZ = Rear-mount receptacle; LT = Liquid-cooled plug; LZ = Liquid-cooled receptacle
Keying Zone 1	8	8 keying positions (A–H). Supplied unkeyed; hardware shipped loose.
Module Code P0/J0	a / e	Half module type at position P0 (plug) or J0 (receptacle)
Module Codes P1/J1, P2/J2	AB / IJ	Full module types at positions P1/J1 and P2/J2. Lowercase = half module; Uppercase = full module.
Keying Zone 2	8	8 keying positions for P2/J2 and P3/J3 zone (6U) or P2/J2 zone (3U)
Module Codes P3/J3–P6/J6	AAAG / IIJD	Full module types at positions P3/J3 through P6/J6
Keying Zone 3	8	8 keying positions (1–8) for P6/J6 zone (6U only)
Variant Identifier	-A	A, B, C… Distinguishes contact loading variations within the same module configuration
Shell Material	(none) / S	None = Aluminum alloy, nickel plated; S = Stainless steel, passivated
Daughter Card Thickness	(none) / 02	None = 1.6–2.6 mm; 02 = 2.6–3.5 mm (plug only)

4. Certifications & Standards Compliance

📋 VITA 41 High-speed differential signaling framework

📋 VITA 46 VPX baseline standard for 3U and 6U form factors

📋 VITA 48 Ruggedized enhanced design implementation

📋 VITA 66 Fiber optic interconnect for VPX systems

📋 VITA 67 Coaxial RF interconnect for VPX systems

5. Frequently Asked Questions

Are RF and fiber optic contacts included with the connector?

No. RF contacts (type D modules) and MT fiber optic contacts (type G/G4 modules) are ordered separately and are not supplied with the connector body. The extraction tool for RF contacts (QX-RF-12) is also ordered separately.

What is the default keying configuration?

Connectors are supplied unkeyed. Guide pins and guide sockets are shipped as loose hardware. The user sets the desired keying position during system assembly. Each keying zone offers 8 positions (A–H or 1–8).

Can the VPX plug mate with a standard VITA backplane receptacle?

Yes. The HK-VPX series is designed to be interoperable with standard VITA 46 receptacle connectors. The VPXP series (optimized plug variant) also mates with standard VPX series receptacles.

What is the minimum fiber bend radius during installation?

The minimum bend radius for the optical fiber is 1.27 mm. For the cable assembly, maintain a bend radius of at least 10 times the cable diameter. Avoid tight bundling that could create localized bending below these limits.