The SFP-1GE-BX40D is a 1G SFP optical transceiver engineered as a drop-in equivalent for Juniper platforms, programmed to the host EEPROM so it comes up as a native module with no configuration required.
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Form Factor: SFP
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Data Rate: 1G
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TX Wavelength: 1490nm
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RX Wavelength: 1310nm
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Fiber Type: SMF
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Reach: 40km
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Connector: Simplex LC
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OEM Equivalent: SFP-1GE-BX40D
Compatibility: Documented OEM compatibility (Juniper published compatibility documentation): this module is accepted in 1G SFP ports on the ACX Series, EX2300 Series, EX3400 Series, EX4300 Series, EX4400 Series, MX204/MX Series, QFX5120 Series, and SRX Series. This module follows Juniper's published compatibility matrix; for your exact line card or OS release, email 10.4@tenfouroptics.com and we'll confirm fit.
Pairs with: SFP-1GE-BX40U — BiDi runs over a single fiber strand; this D unit pairs with one U unit at the far end.
Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.
It is qualified against Juniper host platforms and tested end to end so it behaves exactly as the OEM module it replaces, slotting into existing designs without surprises. The result is a like-for-like swap that protects the original network design while removing OEM-optics cost from the bill of materials. It operates 40km.
Because it is coded to the Juniper host platform, the switch or router reads it as a factory module — clean in diagnostics, free to mix with OEM and other compatible optics in the same chassis, and needing no firmware exceptions.
Each unit is programmed to match Juniper host values and bench-tested for traffic conformity, DOM-threshold accuracy, and optical cleanliness before it leaves the bench. Class 1 laser certified and RoHS compliant.
Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In stock and ships same or next business day.
