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Technical Data Sheet
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81Y1620 ✓ Verified by PartsTable
LENOVO · SFP TRANSCEIVER
WHAT YOU NEED TO KNOW
SR = Short Range (multimode, 300m) | LR = Long Range (single-mode, 10km) DOM = Digital Optical Monitoring — most enterprise SFPs support it
MATCH ALL THREE: Speed + Wavelength + Brand compatibility
PRODUCT OVERVIEW

The Lenovo Base T SFP is a LENOVO optical transceiver module designed for high-speed data center interconnects. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
81Y1620
SPECIFICATIONS
Part Number81Y1620
ManufacturerLENOVO
COMPONENT DIAGRAM
BAIL LATCH 10G SFP+ 850nm · SR (MMF, 300m) DOM: Digital Optical Monitoring TX RX LC DUPLEX 20-PIN EDGE CONNECTOR ~56.5 mm ~13.4mm SFP+ TRANSCEIVER | 10G | 850nm | SR (MMF, 300m) Hot-swappable | LC duplex fiber | DDM/DOM supported TITLE SFP+ XCVR PN 81Y1620 MFR LENOVO Lenovo Base T SFP
TYPICAL APPLICATIONS
  • Data center switch-to-switch interconnects
  • Server-to-storage fabric connectivity
  • Long-distance fiber optic links
  • High-speed uplink connections (10G/25G/40G/100G)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
81Y1618Compatible
IBM GBIC SFP 1GbE SW RJ-45 850nm BNT BN-CKM-S-T Transceiver Module - Option
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 1
81Y1618SUBSTITUTE
IBM GBIC SFP 1GbE SW RJ-45 850nm BNT BN-CKM-S-T Transceiver Module - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 81Y1620?
81Y1620 is a Lenovo Base T SFP manufactured by LENOVO.
What parts can replace 81Y1620?
There is 1 known substitute for 81Y1620: 81Y1618. Substitute compatibility should be verified for your specific system.
Is 81Y1620 still available?
81Y1620 is currently Unknown.
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Last verified: July 2026