SM2.5mm Wire-to-Wire Connectors – JST SM Compatible Waterproof Series
SM2.5mm Wire-to-Wire Connectors – Compatible with JST SM Waterproof Series
Yoeruyo's SM2.5mm connector range provides reliable wire-to-wire interconnection at the 2.5mm pitch, fully compatible with the JST SM series — the industry-standard waterproof connector system for outdoor electronics, LED lighting, RC vehicles, marine equipment, and compact industrial applications. The SM2.5mm system features a sealed housing with integral wire seal, positive-latch retention, and gold-plated crimp terminals, delivering IP67-rated waterproof performance in a compact, lightweight package.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Pitch | 2.5mm |
| Circuit Count | 2 to 6 circuits (single row) |
| Wire Range | 0.08mm² – 0.33mm² (AWG 28–22) |
| Rated Voltage | 250V AC/DC |
| Rated Current | 3A per contact |
| Contact Material | Copper alloy, gold plated over nickel |
| Housing Material | PA66 (Nylon 66), UL94 V-0 |
| Seal Material | Silicone rubber wire seal |
| IP Rating | IP67 (mated, with wire seals installed) |
| Operating Temperature | -25°C to +85°C |
| Locking | Positive latch with audible click |
| Mating Cycles | ≥30 cycles |
| Compliance | RoHS, REACH |
Product Components
- Male housing (plug) – sealed wire-side housing with integral wire seal slots; accepts SM2.5mm male crimp terminals; 2 to 6 circuits
- Female housing (receptacle) – sealed wire-side housing with integral wire seal slots; accepts SM2.5mm female crimp terminals; 2 to 6 circuits
- Male crimp terminals – gold-plated copper alloy male pin terminals for crimping onto AWG 22–28 wire
- Female crimp terminals – gold-plated copper alloy female socket terminals for crimping onto AWG 22–28 wire
- Wire seals – silicone rubber individual wire seals providing IP67 ingress protection at each wire entry point
- Pre-assembled wire harnesses – custom SM2.5mm wire-to-wire assemblies with specified wire length, gauge, and circuit count for OEM integration
Application Scenarios
- Outdoor LED lighting – waterproof connections in LED strip lighting, garden lighting, facade illumination, and outdoor signage power supplies
- RC vehicles & drones – waterproof motor, ESC, and sensor connections in RC boats, waterproof crawlers, and outdoor UAV platforms
- Marine electronics – navigation light wiring, bilge pump connections, and sensor wiring in marine and watercraft electrical systems
- Solar & renewable energy – low-voltage signal and sensor connections in solar charge controllers, battery management systems, and off-grid power systems
- Industrial outdoor equipment – sensor and actuator wiring in outdoor industrial equipment, agricultural machinery, and traffic control systems
- Smart home & IoT outdoor devices – weatherproof connections in outdoor cameras, smart irrigation controllers, and environmental monitoring sensors
Why Choose Yoeruyo SM2.5mm Connectors
- ✅ JST SM series compatible – dimensionally compatible with JST SM 2.5mm housings and terminals for drop-in replacement applications
- ✅ IP67 waterproof rating – silicone wire seals and sealed housing provide protection against dust ingress and temporary water immersion
- ✅ Gold-plated contacts – gold over nickel plating ensures low contact resistance and corrosion resistance in humid and outdoor environments
- ✅ Positive-latch retention – audible click confirmation prevents accidental disconnection in vibration-prone outdoor and marine environments
- ✅ RoHS & REACH compliant – halogen-free materials meet EU and global environmental standards
Buying Guide – Selecting the Right SM2.5mm Component
- Circuit count – select the number of circuits to match your wiring requirements; available from 2 to 6 positions
- Wire gauge – SM2.5mm terminals accept AWG 28–22 (0.08–0.33mm²); confirm your wire gauge matches the wire seal size before ordering
- Wire seal installation – individual wire seals must be installed on each wire before crimping the terminal; do not omit seals if IP67 rating is required
- Male vs female housing – order both male and female housings and terminals as a mating pair; SM2.5mm is a wire-to-wire system with no PCB header
- Pre-assembled harnesses – for OEM integration, pre-assembled SM2.5mm wire harnesses eliminate assembly complexity and ensure consistent IP67 sealing
Frequently Asked Questions
Is SM2.5mm compatible with JST SM series connectors?
Yes. Yoeruyo SM2.5mm housings and terminals are dimensionally compatible with JST SM 2.5mm series connectors. They mate correctly with genuine JST SM counterparts, making them suitable for drop-in replacement and system expansion.
What IP rating do SM2.5mm connectors achieve?
When correctly assembled with individual wire seals installed on each wire, SM2.5mm connectors achieve IP67 rating — protected against dust ingress and temporary immersion in water up to 1 meter for 30 minutes. Wire seals must be installed correctly for the IP67 rating to be achieved.
Can SM2.5mm connectors be used with PCB headers?
No. The SM2.5mm series is a wire-to-wire connector system — both the male and female housings are wire-side. There is no PCB header in the SM series. For wire-to-board applications at 2.5mm pitch, consider the JST PH or XH series instead.
What wire gauge is supported?
SM2.5mm crimp terminals accept wire from AWG 28 to AWG 22 (0.08mm² to 0.33mm²). The wire seal size must match the wire outer diameter — confirm the wire OD before ordering seals.
Do you offer pre-assembled waterproof wire harnesses?
Yes. Custom SM2.5mm wire-to-wire harnesses with pre-crimped terminals, installed wire seals, and specified wire lengths are available for OEM integration. Contact us for assembly quotations and lead times.
