Single N-channel logic-level enhancement mode MOSFET, 50 V, 200 mA, SOT-23-3. onsemi lifecycle status: 'Last Shipments' (entering Obsolete).
BSS138L is currently in LTB status from ON Semiconductor. This usually means buyers should review notice timing, last-time-buy planning, and continuity strategy before future demand tightens.
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Key specifications
Serise
BSS138
Min Quantity
1
Category
Discrete Semiconductor ProductsSub Categroy
Transistors - FETs, MOSFETs - SingleDescription
Single N-channel logic-level enhancement mode MOSFET, 50 V, 200 mA, SOT-23-3. onsemi lifecycle status: 'Last Shipments' (entering Obsolete).
key Attributes
-
Technical document
Review the latest datasheet for BSS138L from ON Semiconductor in a separate tab so engineers and buyers can check package, electrical characteristics, and application details without leaving this product page.
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Export Classifications & Environmental
RoHS Status
RoHS Compliant
Export Classifications & Environmental
HTSUS
8541.29.0095
Product Parameter
Part Number
BSS138L
Product Parameter
VDS (Drain-Source)
50 V
Product Parameter
ID (Continuous Drain)
200 mA (Ta)
Product Parameter
VGS (Gate-Source)
±20 V
Notice documents
ON Semiconductor
End-of-life notification for the onsemi BSS138L N-channel small-signal MOSFET (SOT-23-3, 50 V, 200 mA, 3.5 ohm). onsemi product page (2025) shows lifecycle 'Last Shipments' (the 6-month final-shipment window before Obsolete). DigiKey lists Part Status 'Obsolete'. Direct P2P drop-in replacement: BSS138-7-F from Diodes Incorporated (SOT-23-3, identical pinout and specs).
BSS138L cross reference and pin-to-pin alternatives
Review mapped pin-to-pin alternatives for BSS138L from ON Semiconductor. Compare package, lifecycle, stock, and sourcing context before moving to RFQ or engineering approval.
Pin-to-pin P2P drop-in for the obsolete onsemi BSS138L. Identical SOT-23-3 footprint and pinout (1=Gate, 2=Drain, 3=Source). Same 50 V VDS, 200 mA ID, 3.5 ohm Rds(on) ratings. onsemi product page (2025) shows BSS138L lifecycle as 'Last Shipments' (the onsemi glossary defines this as the final 6-month shipment window before Obsolete), and DigiKey lists the part as 'Obsolete'. Diodes BSS138-7-F is the universal cross-vendor BSS138 drop-in listed as the primary parametric equivalent on Z2Data and Octopart.
Replacement Type
Pin-to-pin option
Lifecycle status
Active
key Attributes
-
Available Quantity
97,454
Sourcing Signal
Review mapped pin-to-pin alternatives for BSS138L from Diodes Incorporated. Compare package, lifecycle, stock, and sourcing context before moving to RFQ or engineering approval.
Pin-to-pin P2P drop-in for the obsolete onsemi BSS138L. Infineon BSS138N is the SIPMOS small-signal N-channel MOSFET in PG-SOT-23 (3-pin) with identical SOT-23-3 footprint and pinout (1=Gate, 2=Drain, 3=Source). Same 3.5 Ω RDS(on) at the same gate drive — exact parametric replacement per Ovaga and DigiKey 'Similar' listings. 60 V VDS (vs BSS138L's 50 V) provides 20% extra voltage headroom. 0.23 A ID vs BSS138L's 0.20 A. Recommended primary drop-in for new designs after BSS138L is obsolete.
Replacement Type
Pin-to-pin option
Lifecycle status
Active
key Attributes
-
Available Quantity
200,000
Sourcing Signal
Review mapped pin-to-pin alternatives for BSS138L from Infineon Technologies. Compare package, lifecycle, stock, and sourcing context before moving to RFQ or engineering approval.
Pin-to-pin P2P drop-in for the obsolete onsemi BSS138L. Nexperia BSN20 (Diodes Incorporated 7-inch reel variant) is a 50 V N-channel enhancement mode MOSFET in SOT-23-3 with identical pinout to BSS138L. Logic-level gate drive (RDS(on) ~1.8 Ω at Vgs = 10 V), 0.18 A ID, 360 mW Pd. Same 50 V VDS class and SOT-23-3 footprint. Recommended when the design needs lower RDS(on) for reduced conduction loss vs BSS138L.
Replacement Type
Pin-to-pin option
Lifecycle status
Active
key Attributes
-
Available Quantity
17,364
Sourcing Signal
Review mapped pin-to-pin alternatives for BSS138L from Diodes Incorporated. Compare package, lifecycle, stock, and sourcing context before moving to RFQ or engineering approval.
Functional alternative to the obsolete onsemi BSS138L. 2N7002K-7 (Nexperia / Diodes Incorporated) is a 60 V N-channel logic-level enhancement mode MOSFET in SOT-23-3 with the same pinout (1=Gate, 2=Drain, 3=Source). 0.115 A ID and ~3 Ω RDS(on) at Vgs = 10 V. Same logic-level gate drive and small-signal switching application class as BSS138L, but ~2x lower current rating. Use as drop-in when the design's continuous drain current is below 100 mA (level-shifting, load switch, simple analog switches).
Replacement Type
Functional
Lifecycle status
Active
key Attributes
-
Available Quantity
48,539
Sourcing Signal
Review mapped pin-to-pin alternatives for BSS138L from Diodes Incorporated. Compare package, lifecycle, stock, and sourcing context before moving to RFQ or engineering approval.
Common questions
Quick answers for buyers reviewing BSS138L, stock, documentation, and sourcing steps.
BSS138L is a Transistors - FETs, MOSFETs - Single component from ON Semiconductor. This product page summarizes the core sourcing details buyers need before checking price, availability, documentation, or samples.
BSS138L is listed with package reference SOT-23-3. The current product description is Single N-channel logic-level enhancement mode MOSFET, 50 V, 200 mA, SOT-23-3. onsemi lifecycle status: 'Last Shipments' (entering Obsolete)., and buyers should confirm package, footprint, and electrical details against the datasheet or quotation notes before approval.
This page currently shows 60000 units in stock and 48000 units available for BSS138L. Because electronic component availability can change quickly, submit an RFQ to confirm live stock, lead time, and final pricing.
Yes. Use the Quick Quote or Request Sample action on this page to send the quantity and sourcing requirements for BSS138L by ON Semiconductor. The TrustCompo team can review price, availability, and documentation support.
Yes. This page links to the datasheet for BSS138L by ON Semiconductor, so engineers and buyers can review package, ratings, and application details before purchase.
Buyers should confirm the manufacturer, package, quantity, target price, RoHS or compliance needs, and any Certificate of Conformance or traceability requirements for BSS138L before approving the order.
BSS138L is marked LTB by ON Semiconductor, which usually signals a last-time-buy window or similar planning event. Teams should review the notice timing, secure any required bridge stock, and evaluate longer-term replacement strategy. This page currently lists 1 related notice documents when available.
Transistors - FETs, MOSFETs - Single
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