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PRODDUCTS

Shenzhen JHA Technology Co., Ltd is one of the leading manufacturers of hardened Ethernet, PoE, and fiber connectivity products specifically designed for harsh and demanding environments.

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1.25G Single Mode 20Km DDM | Dual Fiber SFP Transceiver JHA3420D

- Up to 1.25Gb/s Data Links
- Hot-Pluggable
- Duplex LC connector
- Up to 20km on 9/125μm SMF
- 1310nm FP laser transmitter
- Single +3.3V Power Supply
- Monitoring Interface Compliant with SFF-8472
- Low power dissipation <1W typically
- Industrial /Extended/ Commercial operating temperature range: -40°C to 85°C/-5°C to 85°C/-0°C to 70°C Version available
- RoHS compliant and Lead Free

Classification

SFP Module

1.25G SFP

1.25G Dual Fiber

Product consultation

DESCRIPTION
DIMENSION
ORDER INFORMATION
DOWNLOAD
APPLICATIONS

Product Introduction:

Enhance your home network with our customized Dual Fiber SFP Transceiver, the JHA3420D, specifically designed for extended reach data transmission in single mode fiber optic networks. This customized Dual Fiber SFP Transceiver is perfect for home users looking to upgrade their network capabilities for applications such as Metro/Access Networks, 1.25 Gb/s 1000Base-LX Ethernet, 1×Fibre Channel, and other optical links.

The JHA3420D customized Dual Fiber SFP Transceiver for home users features a duplex LC optics interface and is equipped with a 1310 nm FP laser for the transmitter and a PIN receiver for the receiver section. This configuration provides a robust up to 15dB link budget, ensuring reliable 1000Base Ethernet connectivity over distances up to 20km. The customized Dual Fiber SFP Transceiver for home users is a high-performance, cost-effective solution that meets the unique needs of home networking environments.

Applications:

1). Metro/Access Networks

2). 1.25 Gb/s 1000Base-LX Ethernet

3). 1×Fibre Channel

4). Other Optical Links

Description:

JHA3420D Transceiver is a high performance, cost effective module which have a duplex LC optics interface. Standard AC coupled CML for high speed signal and LVTTL control and monitor signals. The receiver section uses a PIN receiver and the transmitter uses a 1310 nm FP laser, up to 15dB link budge ensure this module 1000Base Ethernet 20km application.

• Absolute Maximum Ratings

Parameter	Symbol	Min.	Typical	Max.	Unit
Storage Temperature	T_S	-40		+85	°C
Supply Voltage	V_CC	-0.5		4	V
Relative Humidity	RH	0		85	%

• Recommended Operating Environment:

Parameter		Symbol	Min.	Typical	Max.	Unit
Case operating Temperature	Industrial	T_C	-40		85	°C
	Extended		-5		85	°C
	Commercial		0		+70	°C
Supply Voltage		V_CC	3.135		3.465	V
Supply Current		Icc			300	mA
Inrush Current		I_surge			Icc+30	mA
Maximum Power		P_max			1	W

• Electrical Characteristics(T_OP = -40 to 85°C, VCC = 3.135 to 3.465 Volts)

Parameter	Symbol	Min.	Typical	Max.	Unit	Note
Transmitter Section:
Input differential impedance	R_in	90	100	110	W	1
Single ended data input swing	V_i_{n PP}	250		1200	mVp-p
Transmit Disable Voltage	V_D	Vcc – 1.3		Vcc	V	2
Transmit Enable Voltage	V_EN	Vee		Vee+ 0.8	V
Transmit Disable Assert Time	T_dessert			10	us
Receiver Section:
Single ended data output swing	Vout,pp	250		800	mv	3
LOS Fault	V_losfault	Vcc – 0.5		V_{CC_}_host	V	5
LOS Normal	V_{los nor}_m	V_ee		V_ee+0.5	V	5
Power Supply Rejection	PSR	100			mVpp	6

Note:

AC coupled.
Or open circuit.
Into 100 ohm differential termination.
20 – 80 %
LOS is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
All transceiver specifications are compliant with a power supply sinusoidal modulation of 20 Hz to 1.5MHz up to specified value applied through the power supply filtering network shown on page 23 of the Small Form-factor Pluggable (SFP) Transceiver Multi-Source Agreement (MSA), September 14, 2000.

• Optical Parameters(T_OP = -40 to 85°C, VCC = 3.135 to 3.465 Volts)

Parameter	Symbol	Min.	Typical	Max.	Unit	Note
Transmitter Section:
Center Wavelength	λ_c	1270	1310	1360	nm
Spectral Width(RMS)	σ_RMS			3	nm
Optical Output Power	P_out	-9		-3	dBm	1
Extinction Ratio	ER	9			dB
Optical Rise/Fall Time	t_r / t_f			260	ps	2
Relative Intensity Noise	RIN			-120	dB/Hz
Output Eye Mask	Compliant with IEEE802.3 z (class 1 laser safety)
Receiver Section:
Optical Input Wavelength	λ_c	1260		1360	nm
Receiver Overload	P_ol	-3			dBm	4
RX Sensitivity	Sen			-24	dBm	4
RX_LOS Assert	LOS_A	-40			dBm
RX_LOS De-assert	LOS_D			-25	dBm
RX_LOS Hysteresis	LOS _H	0.5			dB
General Specifications:
Data Rate	BR		1.25		Gb/s
Bit Error Rate	BER			10^-12
Max. Supported Link Length on 9/125μm SMF@1.25Gb/s	L_MAX		20		km
Total System Budget	LB	15			dB

Note

The optical power is launched into SMF.
20-80%.
Jitter measurements taken using Agilent OMNIBERT 718 in accordance with GR-253.
Measured with PRBS 2^7-1 at 10^-12 BER

• Pin Assignment

Diagram of Host Board Connector Block Pin Numbers and Name

Diagram of Host Board Connector Block Pin Numbers and Names

• Pin Function Definitions

Pin No	Name	Function	Plug Seq	Notes
1	VeeT	Transmitter Ground	1	1
2	TX Fault	Transmitter Fault Indication	3
3	TX Disable	Transmitter Disable	3	2
4	MOD-DEF2	Module Definition	2	3
5	MOD-DEF1	Module Definition 1	3	3
6	MOD-DEF0	Module Definition 0	3	3
7	Rate Select	Not Connected	3	4
8	LOS	Loss of Signal	3	5
9	VeeR	Receiver Ground	1	1
10	VeeR	Receiver Ground	1	1
11	VeeR	Receiver Ground		1
12	RD-	Inv. Received Data Out	3	6
13	RD+	Received Data Out	3	6
14	VeeR	Receiver Ground	3	1
15	VccR	Receiver Power	2	1
16	VccT	Transmitter Power	2
17	VeeT	Transmitter Ground	1
18	TD+	Transmit Data In	3	6
19	TD-	Inv. Transmit In	3	6
20	VeeT	Transmitter Ground	1

Notes:

Circuit ground is internally isolated from chassis ground.
Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.
Should be pulled up with 4.7k – 10 kohms on host board to a voltage between 2.0V and 3.6V. MOD_DEF(0) pulls line low to indicate module is plugged in.
Rate select is not used
LOS is open collector output. Should be pulled up with 4.7k – 10 kohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
AC Coupled

• SFP Module EEPROM Information and Management

The SFP modules implement the 2-wire serial communication protocol as defined in the SFP -8472. The serial ID information of the SFP modules and Digital Diagnostic Monitor parameters can be accessed through the I²C interface at address A0h and A2h. The memory is mapped in Table 1. Detailed ID information (A0h) is listed in Table 2. And the DDM specification at address A2h. For more details of the memory map and byte definitions, please refer to the SFF-8472, “Digital Diagnostic Monitoring Interface for Optical Transceivers”. The DDM parameters have been internally calibrated.

Table 1. Digital Diagnostic Memory Map (Specific Data Field Descriptions)

Table 2 - EEPROM Serial ID Memory Contents (A0h)

Data Address	Length (Byte)	Name of Length	Description and Contents
Base ID Fields
0	1	Identifier	Type of Serial transceiver (03h=SFP)
1	1	Reserved	Extended identifier of type serial transceiver (04h)
2	1	Connector	Code of optical connector type (07=LC)
3-10	8	Transceiver
11	1	Encoding	NRZ(03h)
12	1	BR, Nominal	Nominal baud rate, unit of 100Mbps
13-14	2	Reserved	(0000h)
15	1	Length(9um)	Link length supported for 9/125um fiber, units of 100m
16	1	Length(50um)	Link length supported for 50/125um fiber, units of 10m
17	1	Length(62.5um)	Link length supported for 62.5/125um fiber, units of 10m
18	1	Length(Copper)	Link length supported for copper, units of meters
19	1	Reserved
20-35	16	Vendor Name	SFP vendor name: JHA
36	1	Reserved
37-39	3	Vendor OUI	SFP transceiver vendor OUI ID
40-55	16	Vendor PN	Part Number: “JHA3420D” (ASCII)
56-59	4	Vendor rev	Revision level for part number
60-62	3	Reserved
63	1	CCID	Least significant byte of sum of data in address 0-62
Extended ID Fields
64-65	2	Option	Indicates which optical SFP signals are implemented(001Ah = LOS, TX_FAULT, TX_DISABLE all supported)
66	1	BR, max	Upper bit rate margin, units of %
67	1	BR, min	Lower bit rate margin, units of %
68-83	16	Vendor SN	Serial number (ASCII)
84-91	8	Date code	JHA’s Manufacturing date code
92-94	3	Reserved
95	1	CCEX	Check code for the extended ID Fields (addresses 64 to 94)
Vendor Specific ID Fields
96-127	32	Readable	JHA specific date, read only
128-255	128	Reserved	Reserved for SFF-8079

• Digital Diagnostic Monitor Characteristics

Data Address	Parameter	Accuracy	Unit
96-97	Transceiver Internal Temperature	±3.0	°C
98-99	VCC3 Internal Supply Voltage	±3.0	%
100-101	Laser Bias Current	±10	%
102-103	Tx Output Power	±3.0	dBm
104-105	Rx Input Power	±3.0	dBm

• Regulatory Compliance

The JHA3420D complies with international Electromagnetic Compatibility (EMC) and international safety requirements and standards (see details in Table following).

Electrostatic Discharge(ESD) to the Electrical Pins	MIL-STD-883EMethod 3015.7	Class 1(>1000 V)
Electrostatic Discharge (ESD)to the Duplex LC Receptacle	IEC 61000-4-2GR-1089-CORE	Compatible with standards
ElectromagneticInterference (EMI)	FCC Part 15 Class BEN55022 Class B (CISPR 22B)VCCI Class B	Compatible with standards
Laser Eye Safety	FDA 21CFR 1040.10 and 1040.11EN60950, EN (IEC) 60825-1,2	Compatible with Class 1 laserproduct.

• Recommended Circuit

SFP Host Recommended Circuit

• Mechanical Dimensions

Mechanical Drawing

Order Information:

Model No.	Description of Goods	Wavelength
JHA3405	1.25G Multimode Dual Fiber 550m	850nm
JHA3405D	1.25G Multimode Dual Fiber 550m DDM	850nm
JHA3420	1.25G Single Mode Dual Fiber 20Km	1310nm
JHA3420D	1.25G Single Mode Dual Fiber 20Km DDM	1310nm
JHA3440	1.25G Single Mode Dual Fiber 40Km	1310nm
JHA3440D	1.25G Single Mode Dual Fiber 40Km DDM	1310nm
JHA3480	1.25G Single Mode Dual Fiber 80Km	1550nm
JHA3480D	1.25G Single Mode Dual Fiber 80Km DDM	1550nm

JHA reserves the right to make changes to the products or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such products or information.

Published by Shenzhen JHA Technology Co., Ltd

1.25G Multimode 550m DDM | Dual Fiber SFP Transceiver JHA3405D

1.25G Single Mode 40Km DDM | Dual Fiber SFP Transceiver JHA3440D

1.25G Multimode 550m DDM | Dual Fiber SFP Transceiver JHA3405D

1.25G Single Mode 40Km DDM | Dual Fiber SFP Transceiver JHA3440D

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