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BSS138L Transistors - FETs, MOSFETs - Single by ON Semiconductor
BSS138L is a Transistors - FETs, MOSFETs - Single model from ON Semiconductor, presented on TrustCompo for buyers who need clear sourcing and review context before RFQ. This listing sits in the Discrete Semiconductor Products / Transistors - FETs, MOSFETs - Single product path. Known package information currently points to SOT-23-3 under the ON Semiconductor brand listing. Single N-channel logic-level enhancement mode MOSFET, 50 V, 200 mA, SOT-23-3. onsemi lifecycle status: 'Last Shipments' (entering Obsolete). TrustCompo combines the available model, brand, hierarchy, and specification details around BSS138L so buyers can move faster from review to quotation.
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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RoHS
Datasheet
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Documentation support
Pre-shipment inspection review
Key specifications
Series
BSS138
Min Quantity
1
Category
Discrete Semiconductor ProductsSub Category
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
-
Datasheet
View BSS138L DatasheetTechnical document
Open The Official Datasheet
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.
Why request a quote
Use the RFQ step to confirm the commercial and documentation details buyers usually need before placing an order.
RoHS, REACH, and lead-free documentation can be confirmed during RFQ
Traceability and Certificate of Conformance support available on request
Pre-shipment inspection report support for quality review
Lifecycle buying advice
BSS138L by ON Semiconductor may require last-time-buy planning. Confirm notice timing, bridge stock, and future replacement options before committing demand.
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Globally recognized certifications
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ISO 9001
Quality management processes for more consistent sourcing and handling.
AS9120B
Aerospace-focused distribution controls for traceability and reliability.
ISO 14001
Environmental management discipline across warehouse and operating workflows.
ESD Control
Electrostatic handling standards to help protect sensitive components.
Ordering workflow
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How to order this product
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1
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2
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3
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Product overview
Overview
BSS138L is onsemi's SOT-23-3 N-channel logic-level enhancement mode MOSFET rated 50 V VDS, 200 mA ID, 3.5 Ω Rds(on) at Vgs = 4.5 V, 350 mW Pd. onsemi product page (2025) shows lifecycle status 'Last Shipments' — the onsemi lifecycle glossary defines 'Last Shipments' as a 6-month period of final shipments, after which the part becomes Obsolete. DigiKey lists Part Status as 'Obsolete' for BSS138L. Direct P2P drop-in: Diodes Incorporated BSS138-7-F (SOT-23-3, 50 V, 200 mA, 3.5 Ω Rds(on)) — identical pinout and pin-for-pin spec match.
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Popular Specs Surfaced First
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
Product Parameter
Vth (Threshold)
0.8 V to 1.5 V
Product Parameter
Power Dissipation (Max)
350 mW (Ta)
Part Number
BSS138L
VDS (Drain-Source)
50 V
ID (Continuous Drain)
200 mA (Ta)
VGS (Gate-Source)
±20 V
Vth (Threshold)
0.8 V to 1.5 V
Power Dissipation (Max)
350 mW (Ta)
Rds(On)
3.5 ohm @ Vgs = 4.5 V
RoHS Status
RoHS Compliant
HTSUS
8541.29.0095
ECCN
EAR99
Mounting Type
Surface Mount
Manufacturer
ON Semiconductor
Pin Count
3
FET Type
N-Channel enhancement mode
Lifecycle Status
Last Shipments (entering Obsolete, per onsemi 2025 product page)
Operating Temperature
-55 C to +150 C
Package / Case
SOT-23-3 (L suffix)
Notice documents
Product Notice Documents
EOLOBSOLETEPrimary noticeONSEMI-EOL-2025-BSS138L
BSS138L EOL Notice - 2025 (Last Shipments → Obsolete)
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 alternatives
BSS138L replacement and cross-reference parts
Review mapped alternatives for BSS138L from ON Semiconductor. Compare replacement type, package, lifecycle, stock, and sourcing context before RFQ or engineering approval.
Pin-to-pin optionDiodes IncorporatedSOT23
BSS138-7-F
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
16,061
Sourcing Signal
Review mapped alternatives for BSS138L from Diodes Incorporated. Compare replacement type, package, lifecycle, stock, and sourcing context before RFQ or engineering approval.
Pin-to-pin optionInfineon TechnologiesSOT-23-3
BSS138N
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
85,892
Sourcing Signal
Review mapped alternatives for BSS138L from Infineon Technologies. Compare replacement type, package, lifecycle, stock, and sourcing context before RFQ or engineering approval.
Pin-to-pin optionDiodes IncorporatedSOT23
BSN20-7
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
31,704
Sourcing Signal
Review mapped alternatives for BSS138L from Diodes Incorporated. Compare replacement type, package, lifecycle, stock, and sourcing context before RFQ or engineering approval.
FunctionalDiodes IncorporatedSOT23
2N7002K-7
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
82,177
Sourcing Signal
Review mapped alternatives for BSS138L from Diodes Incorporated. Compare replacement type, package, lifecycle, stock, and sourcing context before RFQ or engineering approval.
Common questions
Product FAQ
Quick answers for buyers reviewing BSS138L, stock, documentation, and sourcing steps.
What is BSS138L?
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.
What package and description are listed for BSS138L?
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.
Is BSS138L available in stock?
This page currently shows 108624 units in stock and 87836 units available for BSS138L. Because electronic component availability can change quickly, submit an RFQ to confirm live stock, lead time, and final pricing.
Can I request a quote or sample for BSS138L?
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.
Is a datasheet available for BSS138L?
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.
How should buyers verify BSS138L before ordering?
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.
What does the LTB lifecycle status mean for BSS138L?
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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