HY2.0 Connector Complete Guide: Yeonho SMH200, 20037-HNN Specs, PCB Footprint & Comparison with JST PH
The HY2.0 connector is a 2.0mm pitch wire-to-board crimp connector widely used in RC vehicles, robotics, 3D printers, drones, and consumer electronics. Despite being one of the most commonly stocked 2.0mm connectors in the maker and engineering community, it is also one of the most poorly documented — with almost no authoritative source explaining its origin, official specifications, or how it relates to the Yeonho SMH200 and 20037-HNN part numbers.
This guide fills that gap completely.
The HY2.0 connector is the generic market name for the Yeonho Electronics SMH200 series, officially documented under the Yeonho datasheet designation 20037-HNN. Yeonho Electronics is a South Korean connector manufacturer, and the SMH200 / 20037-HNN is their 2.0mm pitch wire-to-board connector system. When you buy "HY2.0" connectors from any supplier, you are buying a product built to the Yeonho SMH200 specification.
This guide covers the complete HY2.0 / Yeonho SMH200 specification, all housing part numbers from 2 to 18 pin, PCB footprint dimensions, terminal specifications, a detailed HY2.0 vs JST PH comparison, and why HY2.0's 3A current rating makes it the preferred choice over JST PH in higher-current applications.
What Is the HY2.0 Connector?
The HY2.0 connector is a 2.0mm pitch wire-to-board crimp connector system consisting of three components:
- Wafer (PCB header) — designated 20037WR-HNN, through-hole, mounts on PCB
- Housing (wire plug) — designated SMH200-NN, crimped wire assembly that plugs into the wafer
- Terminal (crimp contact) — designated YST200, crimped onto AWG#24~#26 wire, inserted into SMH200 housing
Key characteristics:
- 2.0mm pitch — same pitch as JST PH, but higher current rating
- 3A AC/DC current rating — 50% higher than JST PH (2A)
- 250V AC/DC voltage rating
- White housing (default) — visually similar to JST PH
- 2 to 18 positions available (even numbers: 2, 4, 6, 8, 10, 12, 14, 16, 18)
- AWG#24 ~ #26 wire gauge
- Vibration rated — contact resistance 50mΩ MAX, discontinuity 1μsec MAX
- RoHS compliant (Halogen-Free)
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HY2.0 = Yeonho SMH200 = 20037-HNN: The Naming Explained
The HY2.0 connector has three names that refer to the same product family, which causes significant confusion in sourcing and documentation:
| Name | Type | Used By |
|---|---|---|
| HY2.0 | Generic market name | Suppliers, makers, RC community |
| SMH200 | Official Yeonho series name | Yeonho Electronics datasheets |
| 20037-HNN | Yeonho datasheet document number | Yeonho Electronics engineering docs |
The part number suffix -HNN decodes as: H = Halogen-Free (RoHS compliant), NN = pin count (e.g., H02 = 2-pin, H18 = 18-pin).
Yeonho Electronics (연호전자) is a South Korean connector manufacturer established in 1983. The SMH200 series is their standard 2.0mm pitch wire-to-board connector, widely OEM-supplied to the global market under the generic "HY2.0" designation.
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HY2.0 Connector Specifications
| Parameter | Specification |
|---|---|
| Pitch | 2.0mm |
| Connection type | Wire-to-Board |
| Current rating | 3A AC/DC |
| Voltage rating | 250V AC/DC |
| Operating temperature | −25°C to +85°C |
| Insulation resistance | 1,000MΩ minimum |
| Contact resistance (initial) | 30mΩ MAX |
| Contact resistance (after durability) | 50mΩ MAX |
| Vibration — contact resistance | 50mΩ MAX |
| Vibration — discontinuity | 1μsec MAX |
| Wire gauge | AWG#24 ~ #26 |
| Pin count | 2, 4, 6, 8, 10, 12, 14, 16, 18 |
| Wafer material | PA series (Polyamide), Natural color |
| Housing material | PA series (Polyamide), White |
| Terminal material | Copper Alloy, Sn plating |
| RoHS compliance | Yes (Halogen-Free) |
➡️ Shop HY2.0 Housings, Wafers & Pre-Crimped Assemblies
HY2.0 vs JST PH: Same Pitch, Higher Current
➡️ Shop HY2.0 | Shop JST PH 2.0mm
The most important comparison for anyone choosing between HY2.0 and JST PH is the current rating. Both use 2.0mm pitch and look visually similar, but HY2.0 carries 50% more current at the same pitch.
| Feature | HY2.0 (Yeonho SMH200) | JST PH |
|---|---|---|
| Pitch | 2.0mm | 2.0mm |
| Current rating | 3A AC/DC | 2A per contact |
| Voltage rating | 250V AC/DC | 100V AC/DC |
| Wire gauge | AWG#24 ~ #26 | AWG#24 ~ #32 |
| Pin count range | 2 ~ 18 (even numbers) | 2 ~ 16 |
| Housing color | White (default) | White (default) |
| Wafer/Header color | Natural (off-white) | White |
| Contact resistance | 30mΩ MAX | 20mΩ MAX |
| Vibration rated | Yes (1μsec MAX discontinuity) | Not specified |
| Interchangeable? | Not officially — different mating geometry | |
When to choose HY2.0 over JST PH:
- You need more than 2A per contact (motors, servos, power distribution)
- Your application involves vibration (RC vehicles, drones, industrial equipment)
- You need 250V rating (vs JST PH's 100V)
- You need 14, 16, or 18-pin configurations (HY2.0 goes to 18P; JST PH to 16P)
When to choose JST PH over HY2.0:
- Your board already has a B-PH JST header
- You need AWG#28~#32 fine wire compatibility
- You are working with standard LiPo batteries in maker/Arduino projects where JST PH is the ecosystem standard
➡️ JST PH 2.0mm Complete Guide → | Shop JST PH 2.0mm
HY2.0 Wafer (PCB Header) Part Numbers: 20037WR-HNN
The PCB-side component is the 20037WR-HNN wafer — a through-hole vertical PCB header.
| Part No. | Pin | A (mm) | B (mm) | D (mm) | Height | Width |
|---|---|---|---|---|---|---|
| 20037WR-H02 | 2 | 2.00 | 4.75 | 8.00 | 6.8mm | 12.3mm |
| 20037WR-H04 | 4 | 6.00 | 8.75 | 12.00 | 6.8mm | 12.3mm |
| 20037WR-H06 | 6 | 10.00 | 12.75 | 16.00 | 6.8mm | 12.3mm |
| 20037WR-H08 | 8 | 14.00 | 16.75 | 20.00 | 6.8mm | 12.3mm |
| 20037WR-H10 | 10 | 18.00 | 20.75 | 24.00 | 6.8mm | 12.3mm |
| 20037WR-H12 | 12 | 22.00 | 24.75 | 28.00 | 6.8mm | 12.3mm |
| 20037WR-H14 | 14 | 26.00 | 28.75 | 32.00 | 6.8mm | 12.3mm |
| 20037WR-H16 | 16 | 30.00 | 32.75 | 36.00 | 6.8mm | 12.3mm |
| 20037WR-H18 | 18 | 34.00 | 36.75 | 40.00 | 6.8mm | 12.3mm |
➡️ Shop HY2.0 Wafer PCB Headers
HY2.0 Wire Housing Part Numbers: SMH200-NN
The wire-side component is the SMH200-NN housing — the white plastic plug that holds the crimped terminals and mates with the wafer.
| Part No. | Pin | A (mm) | B (mm) | D (mm) | Height | Depth |
|---|---|---|---|---|---|---|
| SMH200-02 | 2 | 2.0 | 4.6 | 5.6 | 7.8mm | 6.45mm |
| SMH200-04 | 4 | 6.0 | 8.6 | 9.6 | 7.8mm | 6.45mm |
| SMH200-06 | 6 | 10.0 | 12.6 | 13.6 | 7.8mm | 6.45mm |
| SMH200-08 | 8 | 14.0 | 16.6 | 17.6 | 7.8mm | 6.45mm |
| SMH200-10 | 10 | 18.0 | 20.6 | 21.6 | 7.8mm | 6.45mm |
| SMH200-12 | 12 | 22.0 | 24.6 | 25.6 | 7.8mm | 6.45mm |
| SMH200-14 | 14 | 26.0 | 28.6 | 29.6 | 7.8mm | 6.45mm |
| SMH200-16 | 16 | 30.0 | 32.6 | 33.6 | 7.8mm | 6.45mm |
| SMH200-18 | 18 | 34.0 | 36.6 | 37.6 | 7.8mm | 6.45mm |
➡️ Shop HY2.0 SMH200 Wire Housings
HY2.0 Terminal: YST200
| Parameter | Specification |
|---|---|
| Part name | YST200 |
| Compatible housing | SMH200-NN |
| Wire gauge | AWG#24 ~ #26 |
| Material | Copper Alloy |
| Plating | Sn (tin) plating |
| Terminal width | 1.9mm (wire crimp section) |
| Terminal height | 2.3mm (wire crimp section) |
| Insulation crimp width | 1.6mm |
| Insulation crimp height | 1.3mm |
Wire preparation for YST200:
- Strip insulation: 2.0–2.5mm
- Wire gauge: AWG#24 (0.20mm²) or AWG#26 (0.13mm²)
- Twist conductor strands before crimping
- Use a ratchet crimper with 1.9mm die for conductor wings, 1.6mm die for insulation wings
If you prefer to skip crimping entirely, our pre-crimped cable assemblies are factory crimped and pull-tested: HY2.0 Single-Headed Cable | Same-Side-Head Cable | Reverse-Side-Head Cable
HY2.0 PCB Footprint (PCB Pattern Dimensions)
For PCB designers using the 20037WR-HNN wafer, the official PCB pattern dimensions from the Yeonho datasheet are:
| Parameter | Dimension |
|---|---|
| Contact pitch | 2.0mm |
| Pad hole diameter | 1.0mm |
| Row-to-row distance | 3.0mm |
| Total footprint height | 11.0mm |
| Mounting tab hole size | 3.6mm × 1.5mm |
PCB pattern width (A dimension) by pin count: A = (N−1) × 2.0mm, where N = pin count. Example: 4-pin = 6.0mm, 8-pin = 14.0mm, 12-pin = 22.0mm.
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HY2.0 Applications & Cable Assembly Types
The HY2.0 connector's 3A current rating and vibration resistance make it the preferred 2.0mm connector in applications where JST PH's 2A rating is insufficient. We offer four cable assembly types to cover every wiring scenario:
| Cable Type | Description | Typical Use | Product |
|---|---|---|---|
| Single-Headed | SMH200 housing on one end, bare wire leads on other | Pigtail to PCB wafer, battery leads | UL1007 PVC | Pre-Crimped Terminal | Silicone UL3239 |
| Same-Side-Head | SMH200 housing on both ends, same orientation | Board-to-board extension, same-direction routing | UL1007 PVC | Pre-Crimped Terminal | Silicone UL3239 |
| Reverse-Side-Head | SMH200 housing on both ends, reversed orientation | Board-to-board extension, reversed routing | UL1007 PVC |
| Male-Female Extension | Wafer on one end, housing on other | Inline extension, adding length to existing harness | UL1007 PVC | Pre-Crimped Terminal | Silicone UL3239 |
Wire options:
- UL1007 PVC — standard PVC insulation, AWG#24~#26, general purpose
- UL3239 Silicone — soft silicone wire, 200°C heat resistant, 3KV, 3A — ideal for high-temperature environments (3D printer hotend, motor controllers)
Application highlights:
- RC vehicles — servo connections, receiver wiring, ESC signal leads
- Drones & UAV — flight controller connections, ESC signal wiring
- 3D printers — stepper motor signal leads, endstop connections, fan wiring
- Robotics — servo buses, sensor arrays, multi-axis motor control
- Industrial equipment — vibration-rated connections (1μsec MAX discontinuity)
➡️ Shop All HY2.0 Cable Assemblies
HY2.0 Complete Series Comparison
| Series | Pitch | Current | Wire | Connection Type | Best For |
|---|---|---|---|---|---|
| JST SH | 1.0mm | 1A | AWG 28–32 | Wire-to-Board | FPV drones, ultra-compact |
| JST GH | 1.25mm | 1A | AWG 28–32 | Wire-to-Board | Pixhawk/ArduPilot |
| JST ZH | 1.5mm | 1A | AWG 26–32 | Wire-to-Board | Micro servos, sensors |
| JST PH | 2.0mm | 2A | AWG 24–32 | Wire-to-Board | LiPo batteries, Arduino |
| HY2.0 (SMH200) | 2.0mm | 3A | AWG 24–26 | Wire-to-Board | RC, 3D printers, robotics, higher current |
| JST XH | 2.5mm | 3A | AWG 22–28 | Wire-to-Board | 3D printers, RC receivers |
| JST VH | 3.96mm | 10A | AWG 18–22 | Wire-to-Board | Power distribution, motors |
➡️ 12 Most Common JST Connector Types → | Wire-to-Board Connector Types: Complete Guide → | Shop HY2.0
Frequently Asked Questions
What is a HY2.0 connector?
The HY2.0 connector is the generic market name for the Yeonho Electronics SMH200 series — a 2.0mm pitch wire-to-board crimp connector rated 3A, 250V. It consists of a 20037WR-HNN PCB wafer, SMH200-NN wire housing, and YST200 crimp terminal (AWG#24~#26). Widely used in RC vehicles, 3D printers, drones, and robotics. ➡️ Shop HY2.0 at Keszoox
Is HY2.0 the same as Yeonho SMH200?
Yes. HY2.0 is the generic market name for the Yeonho Electronics SMH200 connector series, documented under Yeonho datasheet number 20037-HNN. All three names refer to the same 2.0mm pitch wire-to-board connector system.
Is HY2.0 compatible with JST PH?
HY2.0 and JST PH are both 2.0mm pitch connectors but are not officially interchangeable. They have different housing geometries and mating interfaces. While some users report partial physical compatibility, this is not guaranteed and should not be relied upon in production designs.
What is the current rating of HY2.0?
The HY2.0 (Yeonho SMH200) is rated 3A AC/DC — 50% higher than JST PH (2A). This makes HY2.0 the preferred choice for applications requiring more than 2A at 2.0mm pitch. ➡️ Shop HY2.0 Connectors
What wire gauge does HY2.0 use?
HY2.0 uses AWG#24 ~ #26 wire with the YST200 crimp terminal. AWG#24 (0.20mm²) is recommended for higher current; AWG#26 (0.13mm²) for signal connections. Pre-crimped cables available in UL1007 PVC and UL3239 Silicone.
What is the HY2.0 PCB footprint?
The 20037WR-HNN wafer uses 1.0mm hole diameter, 2.0mm pitch, 3.0mm row spacing, 11.0mm total height. Width A = (N−1) × 2.0mm where N = pin count.
What is the Yeonho SMH200 part number?
SMH200-NN where NN = pin count (02–18, even numbers). Example: SMH200-04 = 4-pin wire housing. Mating PCB wafer: 20037WR-H04. Crimp terminal: YST200. ➡️ Shop HY2.0 SMH200 Connectors
What is the 20037-HNN connector?
20037-HNN is the Yeonho Electronics datasheet designation for the HY2.0 / SMH200 connector system. “H” = Halogen-Free (RoHS), “NN” = pin count. Wafer: 20037WR-HNN; housing: SMH200-NN.
HY2.0 vs JST PH — which is better?
HY2.0 (3A, 250V) is better when you need higher current or voltage than JST PH (2A, 100V) at 2.0mm pitch. JST PH is better when your board already has a B-PH header or you need fine wire (AWG#28~#32). Not interchangeable. ➡️ Shop HY2.0 | Shop JST PH
What is the HY2.0 voltage rating?
250V AC/DC — significantly higher than JST PH (100V AC/DC).
Is HY2.0 RoHS compliant?
Yes. The “H” in the part number suffix stands for Halogen-Free, indicating RoHS compliance.
What crimp tool for HY2.0?
Use a ratchet crimper with 1.9mm die (conductor wings) and 1.6mm die (insulation wings) for the YST200 terminal. The Engineer PA-09 or IWISS SN-2549 work well for AWG#24~#26. Or skip crimping with our pre-crimped cable assemblies. ➡️ Full Crimping Guide →
Shop HY2.0 Connectors at Keszoox
We stock a complete range of HY2.0 / Yeonho SMH200 connectors and cable assemblies, ready to ship worldwide:
- HY2.0 Single-Headed Cable — UL1007 PVC, 2–12 pin
- HY2.0 Single-Head Pre-Crimped Terminal Cable — 22AWG UL1007
- HY2.0 Single-Head Silicone Cable — UL3239, 200°C, 3KV
- HY2.0 Same-Side-Head Cable — UL1007 PVC, 2–12 pin
- HY2.0 Both-Sided Pre-Crimped Terminal Cable — 22AWG UL1007
- HY2.0 Both-Sided Silicone Cable — UL3239, 200°C, 3KV
- HY2.0 Reverse-Side-Head Cable — UL1007 PVC, 2–12 pin
- HY2.0 Male-Female Extension Cable — UL1007 PVC, 2–12 pin
- HY2.0 Male-Female Extension Pre-Crimped Terminal Cable — 22AWG
- HY2.0 Male-Female Extension Silicone Cable — UL3239, 200°C
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