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simonebortolin merged 3 commits into from
Apr 11, 2026
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Add FiberMall GPON-ONU-STB+ and GPON-ONU-CLB+ device pages #449

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5f05adc
Add FiberMall GPON-ONU-STB+ device page
Jaylouisw Apr 8, 2026
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Add FiberMall GPON-ONU-CLB+ page and enrich STB+ with full datasheet
Jaylouisw Apr 8, 2026
e844465
Fix alert color typo: blu -> blue
Jaylouisw Apr 8, 2026
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173 changes: 173 additions & 0 deletions _ont/ont-fibermall-gpon-onu-clb+.md
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---
title: FiberMall GPON-ONU-CLB+
has_children: false
layout: default
parent: FiberMall
---

{% include alert.html content="This is a raw GPON ONU SFP transceiver <strong>without MAC function</strong>. It requires an external PON MAC to operate. For the ONU Stick with integrated MAC, see <a href='/ont-fibermall-gpon-onu-stb+'>FiberMall GPON-ONU-STB+</a>. See also <a href='/sfp-standard'>SFP Standard</a> and <a href='/ont-wo-mac'>SFP with PON MAC and w/o PON MAC</a> for background." alert="Warning" icon="svg-warning" color="yellow" %}

# Hardware Specifications

| | |
| --------------------- | --------------------------------------------------------------------- |
| Vendor/Brand | FiberMall |
| Model | GPON-ONU-CLB+ |
| Chipset | |
| Optics | SC/UPC |
| Form Factor | SFP |
| PON MAC | ❌ None (raw transceiver, requires external PON MAC) |

## Product Variants

| Part Number | TX Enable | Temperature | Price |
| ---------------- | --------- | ------------ | ------ |
| GPON-ONU-CLB+ | Low level | -5 to 70°C | $15.00 |
| GPON-ONU-ILB+ | Low level | -40 to 85°C | |
| GPON-ONU-CHB+ | High level| -5 to 70°C | |
| GPON-ONU-IHB+ | High level| -40 to 85°C | |

All variants: SFP, TX-1.244G/RX-2.488G, T1310nm/R1490nm, GPON Class B+, no MAC, DDM.

## Datasheet Specifications

### General

| | |
| ---------------------------- | ------------------------------------------ |
| TX Data Rate | 1.244 Gbps (burst mode) |
| RX Data Rate | 2.488 Gbps (continuous mode) |
| Max Distance | 20 km |
| Fiber Type | Single Mode 9/125 µm |
| Class | B+ |
| Power Supply | 3.3V ± 5% (3.135–3.465V) |
| Supply Current | 300 mA max |
| Power Consumption | 1 W |
| Operating Temperature | -5 to 70°C (C-Temp) / -40 to 85°C (I-Temp)|
| DDM | ✅ SFF-8472 |

### Transmitter Optical Characteristics

| Parameter | Min | Typical | Max | Unit |
| ---------------------------------- | ------ | ------- | ------ | ------ |
| Launched Power (avg.) | +0.5 | | +5.0 | dBm |
| Operating Wavelength Range | 1260 | | 1360 | nm |
| Output Spectrum Width (RMS) | | | 1.0 | nm |
| Side Mode Suppression Ratio | 30 | | | dB |
| Extinction Ratio | 9 | | | dB |
| Optical Rise Time | | | 260 | ps |
| Optical Fall Time | | | 260 | ps |
| Output Power After TX Disable | | | -50 | dBm |
| Burst Turn-On Time | | | 12.8 | ns |
| Burst Turn-Off Time | | | 12.8 | ns |
| TX Reflectance | | | -15 | dB |

### Receiver Optical Characteristics

| Parameter | Min | Typical | Max | Unit |
| ---------------------------------- | ------ | ------- | ------ | ------ |
| Wavelength Range | 1480 | | 1500 | nm |
| Sensitivity (BER ≤ 10⁻¹²) | | | -28 | dBm |
| Saturation Optical Power | -8 | | | dBm |
| SD Assert Level | | | -29 | dBm |
| SD Deassert Level | -45 | | | dBm |
| SD Hysteresis | 0.5 | | 6 | dB |
| Receiver Reflectance | | | -12 | dB |

### Electrical Characteristics

| Parameter | Min | Typical | Max | Unit |
| ---------------------------------- | ------ | ------- | ------ | ------ |
| TX Differential Input Voltage | 300 | | 2400 | mV |
| RX Differential Output Voltage | 500 | | 1200 | mV |
| TX Common-Mode Input Voltage | 1.6 | | 2.4 | V |
| Input Differential Impedance | 90 | 100 | 110 | Ω |
| TX Fault Output (Normal) | 0 | | 0.4 | V |
| TX Fault Output (Fault) | 2.4 | | VCC+0.3| V |
| SD Assert Time | | | 100 | µs |
| SD Deassert Time | | | 100 | µs |

Transmitter: 1310 nm DFB laser, LVPECL input (DC coupled). Receiver: 1490 nm Super-TIA, CML output (AC coupled).

### DDM Accuracy

| Parameter | Accuracy |
| ------------ | -------- |
| Temperature | ±3°C |
| Voltage | ±3% |
| Bias Current | ±10 mA |
| TX Power | ±3 dB |
| RX Power | ±3 dB |

## Pin Definition

| Pin | Name | Description |
| --- | ---------- | ---------------------------------------------------------------------------- |
| 1 | VeeT | Transmitter Ground |
| 2 | TX_Fault | Transmitter Fault Indication (LVTTL output: low = normal, high = abnormal) |
| 3 | TX_Burst | **Transmitter Burst Enable Input** (LVTTL) |
| 4 | MOD-DEF(2) | I²C Data (SDA), LVTTL |
| 5 | MOD-DEF(1) | I²C Clock (SCL), LVTTL |
| 6 | MOD-DEF(0) | Module Definition 0, grounded within module |
| 7 | TX_SD | **Transmitter Signal Detect** (LVTTL output, active high) |
| 8 | RX_SD | **Receiver Signal Detect** (LVTTL output: high = signal, low = loss) |
| 9 | VeeR | Receiver Ground |
| 10 | VeeR | Receiver Ground |
| 11 | VeeR | Receiver Ground |
| 12 | RD- | Inverted Receiver Data Out (CML, AC coupled) |
| 13 | RD+ | Receiver Data Out (CML, AC coupled) |
| 14 | VeeR | Receiver Ground |
| 15 | VccR | Receiver Power |
| 16 | VccT | Transmitter Power |
| 17 | VeeT | Transmitter Ground |
| 18 | TD+ | Transmit Data In (LVPECL, DC coupled) |
| 19 | TD- | Inverted Transmit Data In (LVPECL, DC coupled) |
| 20 | VeeT | Transmitter Ground |

{% include alert.html content="Note the key Pin differences vs the <a href='/ont-fibermall-gpon-onu-stb+'>STB+ (with MAC)</a>: Pin 3 is TX_Burst (burst enable) instead of TX_Disable, Pin 7 is TX_SD (transmitter signal detect) instead of Dying Gasp, and Pin 8 is RX_SD instead of LOS." alert="Note" icon="svg-info" color="blue" %}

### EEPROM (A0h) Key Fields

| Address | Field | Value | Description |
| ------- | --------------- | ------------ | ----------------------------------- |
| 00 | Identifier | 03 | SFP |
| 01 | Ext. Identifier | 04 | Module soldered to motherboard |
| 02 | Connector | 01 | Optical Pigtail |
| 11 | Encoding | 03 | NRZ |
| 12 | BR, Nominal | 0C | 1.2 Gbps |
| 14 | Length (9µm km) | 14 | 20 km |
| 40–55 | Vendor P/N | GPON-ONU-xxB+| ASCII |
| 60–61 | Laser Wavelength| 051E | 1310 nm |
| 92 | Diag. Mon. Type | 68 | Internal calibration, avg. power RX |

## Standards Compliance

- ITU-T G.984.2 (GPON)
- SFP MSA (SFF-8074i)
- SFF-8472 (DDM)
- FCC 47 CFR Part 15, Class B
- FDA 21 CFR 1040.10 and 1040.11 (Laser Notice No. 50)
- IEC-60825 (Class 1 laser safety)
- Telcordia GR-468-CORE
- TR-NWT-000870 ESD Class 2

## Key Differences vs STB+ (with MAC)

| Feature | CLB+ (no MAC) | STB+ (with MAC) |
| -------------------- | ---------------------------- | ------------------------------------ |
| PON MAC | ❌ None | ✅ Integrated |
| Receiver Type | Super-TIA | APD-TIA |
| Power Consumption | 1 W | 2.48 W |
| GPON/EPON Dual-Mode | ❌ GPON only | ✅ Auto-detect GPON/EPON |
| OMCI (G.988) | ❌ | ✅ |
| Pin 3 | TX_Burst (burst enable) | TX_Disable |
| Pin 7 | TX_SD (TX signal detect) | Dying Gasp detect |
| Pin 8 | RX_SD (RX signal detect) | LOS |
| Price | $15.00 | $45.00 |

{% include alert.html content="This page has been created from the vendor datasheet and product listing. Contributions with hands-on information are welcome." alert="Note" icon="svg-info" color="blue" %}

# Miscellaneous Links

- [FiberMall GPON-ONU-CLB+ product page](https://www.fibermall.com/sale-437481-gpon-onu-sfp-tx1310nm-class-b.htm)
- [Datasheet (PDF)](https://www.fibermall.com/file/datasheet/gpon-onu-xxb%2B.pdf)
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