DOWELL INDUSTRY GROUP LIMITED
| Payment Terms | T/T |
| Supply Ability | 10000pcs per 7 days |
| Delivery Time | 7-15 days |
| Insertion Lose | 0.2 dB (Zr. Ceramic) |
| Durability | 0.2 dB (500 Cycle Passed) |
| Storage Temp. | - 40°C to +85°C |
| Humidity | 95% RH (Non Packaging) |
| Loading Test | ≥ 70 N |
| Insert and Draw Frequency | ≥ 500 times |
| Model Number | DW-FUS-D |
| Place of Origin | Zhejiang, China |
| Brand Name | DOWELL |
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Product Specification
| Payment Terms | T/T | Supply Ability | 10000pcs per 7 days |
| Delivery Time | 7-15 days | Insertion Lose | 0.2 dB (Zr. Ceramic) |
| Durability | 0.2 dB (500 Cycle Passed) | Storage Temp. | - 40°C to +85°C |
| Humidity | 95% RH (Non Packaging) | Loading Test | ≥ 70 N |
| Insert and Draw Frequency | ≥ 500 times | Model Number | DW-FUS-D |
| Place of Origin | Zhejiang, China | Brand Name | DOWELL |
| High Light | sc adsl vdsl tester ，sc network cable crimping tools ，apc adsl vdsl tester | ||
Insertion Lose 0.2 dB Singlemode Coupler D Type FC UPC Fiber Optic Adapter
A fiber optic adapter is a passive hardware component used to connect two fiber optic connectors together, enabling the optical signal to pass from one cable to the other with minimal loss. They are the "mates" or "sockets" that allow connectors to plug in.
Specification:
| Insertion Lose | 0.2 dB (Zr. Ceramic) |
| Durability | 0.2 dB (500 Cycle Passed) |
| Storage Temp. | - 40°C to +85°C |
| Humidity | 95% RH (Non Packaging) |
| Loading Test | ≥ 70 N |
| Insert and Draw Frequency | ≥ 500 times |
Features:
1.1 Polish Type: Must match the connectors being used. Critical for low loss and back reflection.
PC (Physical Contact): Slight dome for minimal air gap. Common for multimode.
UPC (Ultra Physical Contact): Higher grade polish, lower loss, low back reflection (-50dB+). Standard for most modern single-mode systems.
APC (Angled Physical Contact): 8-degree angled endface. Very low back reflection (-65dB+). Crucial for RF video and high-speed PON. Important Rule: APC connectors (green) can ONLY mate with other APC connectors. Mating APC with UPC will damage the endfaces.
1.2 Alignment Sleeve Material: The internal sleeve that aligns the two ferrules.
Ceramic (Zirconia): The gold standard. Extremely hard, precise, durable, and provides the lowest loss. Used in almost all single-mode and high-quality multimode adapters.
Phosphor Bronze: Metal sleeve, less expensive. Used primarily for multimode applications. Less durable over many mating cycles.
Polymer: Plastic sleeve, lowest cost. For less critical, short-distance multimode use.
1.3 Insertion Loss (IL): The amount of signal power lost at the connection. Typically < 0.2 dB for high-quality adapters with matched connectors.
1.4 Return Loss (RL): The amount of light reflected back toward the source. Higher (more negative) numbers are better (e.g., -50dB for UPC, -65dB for APC).
1.5 Flange Type: How the adapter is mounted.
Square Flange: Most common for SC and LC, snaps into cutouts in panels.
Round Flange: Often used for ST adapters, mounted with a nut.
Application:
2.1 CATV System
2.2 Telecommunications
2.3 Optical Networks
2.4 Testing / Measurement Instruments
2.5 Fiber To the Home
Company Details
Business Type:
Manufacturer
Year Established:
2016
Total Annual:
10000000-50000000
Employee Number:
101~120
Ecer Certification：
Verified Supplier
DOWELL Factory Display We have two subcompanies, one is SHENZHEN DOWELL INDUSTRIAL Which produce Fiber Optic Series and another is NINGBO DOWELL TECH which produce Drop Wire Clamps and Copper Telecom Series. Our products are related to whole cabling system, such as FTTH Cabling, Distribuctio... DOWELL Factory Display We have two subcompanies, one is SHENZHEN DOWELL INDUSTRIAL Which produce Fiber Optic Series and another is NINGBO DOWELL TECH which produce Drop Wire Clamps and Copper Telecom Series. Our products are related to whole cabling system, such as FTTH Cabling, Distribuctio...
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