Products Description
The GIGAC DC–2Mbps 1×9 optical transceiver is specifically engineered for industrial low-speed communication systems where reliability and noise immunity are critical.
It supports RS232, RS485, and RS422 serial protocols over fiber, enabling long-distance, electrically isolated communication in demanding environments such as power systems, industrial automation, and rail infrastructure.
With flexible 3.3V/5V power supply, TTL/LVTTL interface, and optional conformal coating, the module integrates seamlessly into both legacy and modern industrial systems.
Technical Specs Summary
Parameter | Specification |
Data Rate | DC to 2Mbps (full-duplex) |
Package | 1×9 Pin Package |
Interface | SC / FC / ST (plastic) / Pigtail |
Wavelength | 850nm / 1310nm / 1550nm / CWDM |
Fiber Type | Multimode (MMF) or Single-Mode (SMF) |
Transmission Distance | 2km (MMF @ 850nm) | 10–60km (SMF) |
Power Supply | 3.3V or 5.0V (selectable) |
Logic Interface | Standard TTL / LVTTL |
DDM | Optional (SFF-8472 compliant) |
Temp. — Standard (C) | 0°C to +70°C |
Temp. — Industrial (I) | -40°C to +85°C |
Conformal Coating | Optional (triple conformal coating) |
Laser Type | FP (850nm/1310nm) | DFB (1550nm/60km) |
Key Features
DC to 2Mbps full-duplex operation
Standard 1×9 pin package for direct PCB mounting
SC / FC / ST optical interface options
Multi-wavelength: 850nm / 1310nm / 1550nm / CWDM
Multimode up to 2km, single-mode up to 60km
3.3V or 5V single power supply
TTL / LVTTL logic interface
Optional DDM (SFF-8472 compliant)
Optional conformal coating for harsh environments
Industrial temperature range: -40°C to +85°C
Technical Advantages
✔ Designed for Harsh Industrial Environments
Excellent performance in high EMI environments such as substations, factories, and transportation systems.
✔ Upgrade Serial Communication to Fiber
Enables seamless transition from RS232/RS485/RS422 copper communication to fiber without redesign.
✔ Dual Voltage Compatibility (3.3V / 5V)
Supports mixed industrial board designs without additional power conversion.
✔ Conformal Coating Protection
Enhances resistance to moisture, dust, and corrosion, ensuring long-term stability.
✔ Long-Distance Stable Transmission
Supports up to 60km transmission for remote monitoring and control systems.
! | Note: The 60km model uses DFB laser at 1470nm–1610nm wavelengths only. For CWDM variants, specify the wavelength code from Note 5 of the ordering table. Verify power supply voltage (3.3V or 5.0V) and temperature grade (C or I) at time of order. |
Typical Applications
Industrial automation and PLC systems
Power grid and substation communication
Railway signaling and trackside systems
SCADA and remote monitoring networks
Security and surveillance fiber transmission
RS232 / RS485 / RS422 serial-to-fiber conversion
Compatibility and Deployment
Compatible with standard 1×9 footprint and widely used in industrial media converters, protocol converters, and OEM control boards.
Ideal for upgrading legacy serial communication systems to fiber-based infrastructure.
FAQ Module
Q: What is a 1×9 optical transceiver module?
A: A 1×9 optical transceiver is a compact fiber optic module in a 9-pin through-hole package that mounts directly on a PCB. It is commonly used in low-speed industrial fiber communication equipment, serial-to-fiber converters, and OEM industrial control boards where SFP cages are not practical.
Q: What data rates does this module support?
A: The module supports data rates from DC (0Hz) to 2Mbps, covering the full range of RS232, RS485, and RS422 serial communication protocols used in industrial automation, sensor networks, and SCADA systems.
Q: What is the maximum transmission distance?
A: Up to 60km over single-mode fiber using 1550nm or CWDM wavelength models with DFB laser. Other variants support 2km (multimode, 850nm), 10km, 20km, and 40km over single-mode fiber. Select the model based on your link distance and fiber type.
Q: What power supply voltages are supported?
A: The module supports both +3.3V and +5.0V single power supplies. The voltage variant is selected at order time using the part number code (N = 3.3V, L = 5.0V). This dual-voltage flexibility makes the module compatible with both modern and legacy industrial control board designs.
Q: What is conformal coating and why is it important?
A: Conformal coating is a protective chemical layer applied to the module's PCB and components to resist moisture, dust, salt spray, and chemical exposure. The triple conformal coating option is essential for modules deployed in outdoor cabinets, factory floors, and harsh industrial environments where untreated components would degrade over time.
Q: Is this module compatible with RS232, RS485, and RS422?
A: Yes. The TTL and LVTTL logic interface of the 1×9 module is directly compatible with RS232/RS485/RS422 serial communication systems, enabling fiber-based transmission of these industrial serial protocols without additional level-shifting circuitry.
Ordering Information
Part number codes: (1)=power supply, (2)=temperature, (3)=DDM/coating, (4)=interface type, (5)=CWDM wavelength code, (6)=CWDM. See notes below table for full decode.
Part Number | Rate | Wavelength | Distance | Fiber | Interface | Power | DDM | Temp |
GACx(1)-8501-02x(2)x(3)x(4) | DC–2Mbps | 850nm | 2km | MMF | SC/FC/ST | 3.3/5V | Y/N | C/I |
GACx(1)-1301-10x(2)x(3)x(4) | DC–2Mbps | 1310nm | 10km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GABx(1)-1512-10x(2)x(3)x(4) | DC–2Mbps | 1550nm | 10km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GWBx(1)-xx(5)01-10x(2)x(3)x(4) | DC–2Mbps | CDWM(6) | 10km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GABx(1)-1312-20x(2)x(3)x(4) | DC–2Mbps | 1310nm | 20km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GABx(1)-1512-20x(2)x(3)x(4) | DC–2Mbps | 1550nm | 20km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GWBx(1)-xx(5)01-20x(2)x(3)x(4) | DC–2Mbps | CDWM(6) | 20km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GABx(1)-1312-40x(2)x(3)x(4) | DC–2Mbps | 1310nm | 40km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GABx(1)-1512-40x(2)x(3)x(4) | DC–2Mbps | 1550nm | 40km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GWBx(1)-xx(5)01-40x(2)x(3)x(4) | DC–2Mbps | CDWM(6) | 40km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GABx(1)-1512-60x(2)x(3)x(4) | DC–2Mbps | 1550nm | 60km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
GWBx(1)-xx(5)01-60x(2)x(3)x(4) | DC–2Mbps | CDWM(6) | 60km | SMF | SC/FC/ST/Pigtail | 3.3/5V | Y/N | C/I |
Note 1: "x"=N, Power Supply is 3.3V; "x"=L, Power Supply is 5.0V.
Note 2: Part Number "x" indicates the case temperature form. If C: 0°C~+70°C; If I: -40°C~+85°C.
Note 3: "x"=D, with DDM; "x"=space, without DDM; "x"=Y, with conformal coating; "x"=N, with DDM and conformal coating.
Note 4: Interface form: SC = "F", FC = "T", ST = "1". e.g. SC interface: GACx-1301-40xxF; FC: GACx-1301-40xxT; ST: GACx-1301-40xx1.
Note 5: Part Number "xx" indicates the wavelength form. See Table-6. e.g. 1270nm → GACx-2701-40xxx.
Note 6: The module uses DFB lasers.
Note 7: The 60km module only has DFB Laser at 1470nm to 1610nm.
Our factory
Industrial Optical Module Assembly Line
High-Precision Fiber Assembly
Automated Manufacturing for Consistency
100% Functional & Reliability Testing
