Wall Adapter Power Supply 12VDC 1A (US Standard)
The TPA301A-12120-US is a compact 12W power adapter built for Huawei (model: AD-120100U0W) and manufactured by Topow Electronics. This adapter delivers a regulated adapter output 12V 1A (12W) from a wide 90V~264V AC input range, making it an ideal power solution for networking equipment, ONT devices, and other low-power electronics.
The adapter output 12v 1a comes in black or white, with a 1.5m DC output cable terminated with a 2.1mm × 5.5mm connector (center positive). It meets DOE Level VI efficiency standards and includes full protection features. The 12V 1A output stays stable across the entire input range, backed by strict voltage regulation and low ripple-so your equipment gets clean, reliable power.
Key Features
Stable 12V/1A Power Delivery
- Adapter output 12V 1A (12W) with tight voltage regulation of ±5% across full input and load ranges
- Wide input voltage range: 90V~264V AC, compatible with global power grids
- Frequency support: 47Hz~63Hz
- Low output ripple: ≤300mV peak-to-peak (with 20MHz bandwidth limit)
High Energy Efficiency
- DOE Level VI compliant with average efficiency of 82.96% (tested at 115V/60Hz and 230V/50Hz)
- Ultra-low no-load power consumption: ≤0.075W at 115V/230V input
- Meets global energy-saving standards, reducing operational costs
Compact & Aesthetic Design
- Dimensions: 70mm (L) × 46mm (W) × 29.5mm (H) – space-saving desktop form factor
- Available in black and white enclosure options (white: YBB16 / black: YB801)
- Surface texture: VDI30-33, meeting Huawei's color and finish specifications
- PC flame-retardant material rated UL94 V-0 for enhanced safety
Comprehensive Protection
- Output over-current protection: Hiccup mode, auto-recovery
- Output over-voltage protection: Hiccup mode, ≤16V clamp
- Output short-circuit protection: Hiccup mode, auto-recovery
- Input over-current protection with safety-rated fuse (T5A/250V)
- Primary-secondary isolation withstands 3000VAC for 1 minute (leakage ≤5mA)
Global Safety & EMC Certifications
- Safety: UL 62368-1 certified for North American market
- EMC: FCC compliant, Class B emission limits
- Energy Efficiency: DOE Level VI, QRP035
- Environmental: RoHS and REACH compliant
- LPS (Limited Power Source) compliant per IEC/EN/UL 62368-1 Annex Q
High-Quality Design & Manufacturing
- No Y-capacitor design for improved isolation performance
- Input electrolytic capacitor with foam padding for electrolyte absorption in abnormal conditions
- 90% automation rate in production for consistent quality
- PCBA 100% lead-free soldering (no component lead trimming required)
Applications
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Optical Network Terminals (ONTs)
Specifically designed to power Huawei OptiXstar K662d and other ONT devices, providing stable 12V/1A power for fiber-optic broadband deployments in homes and enterprises.
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Networking & Communication Equipment
Ideal for small switches, routers, modems, and other networking devices requiring a regulated adapter output 12V 1A to maintain consistent connectivity performance.
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Security & Surveillance Systems
Suitable for low-power IP cameras, video doorbells, and access control panels where a reliable adapter output 12V 1A ensures uninterrupted security monitoring.
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Consumer Electronics
Perfect for a range of devices including set-top boxes, digital signage, and small audio/visual equipment that operate on 12V DC power with 1A current requirements.
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Industrial & IoT Devices
Ideal for low-power sensors, data acquisition modules, and embedded controllers in industrial automation environments where the adapter output 12V 1A provides stable, noise-free power.
Product Certification
FAQ
01.How many units are packed in one carton?
02.What safety certifications does this adapter hold?
03.What type of DC connector does it use?
04.Can this adapter be used outdoors?
05.Is sample testing available before bulk order?
06.What is the lead time for this adapter?
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Products Specifications
| Parameter | Specification |
|---|---|
| Model | TPA301A-12120-US |
| Dimensions | 50.6 mm x 46 mm x 70 mm |
| Input Voltage | 90V ~ 264V AC (47Hz~63Hz) |
| Rated Output | 12V DC / 1.0A (12W) |
| Output Voltage Range | 11.4V ~ 12.6V |
| Line Regulation | ≤ ±2% |
| Load Regulation | ≤ ±3% |
| Output Ripple | ≤ 300mV p-p |
| Average Efficiency | ≥ 82.96% (DOE VI) |
| No-Load Power Consumption | ≤ 0.075W |
| Operating Temperature | -5°C ~ +45°C |
| Storage Temperature | -40°C ~ +70°C |
| Operating Humidity | 5% ~ 95% RH (non-condensing) |
| Altitude | Up to 5000m |
| MTBF | ≥ 60,000 hours (@25°C) |
| Product Lifetime | ≥ 3 years (@30°C, full load) |
| DC Connector | 2.1mm × 5.5mm × 9.5mm, center positive, half-insulated with retention hooks |
| Output Cable | 1.5m, UL2468 24AWG |
| Input Plug | US 2-pin, UL compliant |
| Enclosure Material | PC UL94 V-0 (black or white) |
| Ingress Protection | IP40 |
