SPX431L

Precision Adjustable Shunt Regulator
Data Sheets OBS (Obsolete)

Overview

Information Precision Adjustable Shunt Regulator
Reference Voltage Adjustable, Fixed
VOUT (V) -
VOUT Adj MIN (V) 2.5
VOUT Adj MAX (V) 20
Operating Current (MAX) (mA) 100
Operating Current (MIN) (mA) 1
IQ (µA) 1000
Initial Accuracy (%) 1
IREF (µA) 0.7
Temperature Coefficient (ppm/°C) 30
Temperature Range (°C) 0 to 105
Package SOT89-3
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The SPX431L is a 3-terminal adjustable shunt voltage regulator providing a highly accurate bandgap reference. The SPX431L acts as an open-loop error amplifier with a 2.5V temperature compensation reference. The SPX431L’s thermal stability, wide operating current (100mA) and temperature range (0°C to 105°C) makes it suitable for a variety of applications that require a low cost, high performance solution. SPX431L tolerance of 0.5% is proven to be sufficient to overcome all of the other errors in the system to virtually eliminate the need for trimming in the power supply manufacturer's assembly line and contribute a significant cost savings.

The output voltage may be adjusted to any value between VREF and 20V with two external resistors. The SPX431L is available in TO-92, and SOT-89 packages.

  • Tight voltage tolerance 0.5% at 10mA
  • Wide operating current 1mA to 100mA
  • Extended temperature range: 0°C to 105°C
  • Low temperature coefficient 30 ppm/°C
  • Improved replacement in performance for TL431 and AS431
  • Low cost solution

  • Battery operating equipment
  • Adjustable supplies
  • Switching power supplies
  • Error amplifiers
  • Single supply amplifier
  • Monitors / VCRs / TVs
  • Personal computers

Documentation & Design Tools

All Types Data Sheets Application Notes Product Briefs & Brochures Symbols & Footprints
Type Title Version Date File Size
Data Sheets SPX431L Precision Adjustable Shunt Regulator 2.0.1 July 2013 2.5 MB
Application Notes AN200, Downloading and Installing CAD Symbols and Footprints with Ultra Librarian April 2019 1.2 MB
Product Brochures Power Management Brochure R01 November 2024 2.4 MB
Symbols & Footprints SPX431LM1-L/TR CAD File (.bxl) September 2018 27.3 KB
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Quality & RoHS

Part Number RoHS | Exempt RoHS Halogen Free REACH TSCA MSL Rating / Peak Reflow Package
SPX431LM1-L/TR N Y Y Y Y L2 / 260ᵒC SOT-89-3

Click on the links above to download the Certificate of Non-Use of Hazardous Substances.

Additional Quality Documentation may be available, please Contact Support.

Parts & Purchasing

Part Number Pkg Code Min Temp Max Temp Status Suggested Replacement PDN
SPX431LAM SOT-23-3 OBS
SPX431LAM-L SOT-23-3 0 105 OBS
SPX431LAM-L/TR SOT-23-3 0 105 OBS
SPX431LAM/TR SOT-23-3 0 105 OBS
SPX431LAM1 SOT-89-3 OBS
SPX431LAM1-L SOT-89-3 0 105 OBS SPX431LM1-L
SPX431LAM1-L/TR SOT-89-3 0 105 OBS SPX431LM1-L/TR
SPX431LAM1/TR SOT-89-3 OBS
SPX431LAN TO-92-3 OBS
SPX431LAN-L TO-92-3 0 105 OBS SPX431LAN-L/TR
SPX431LAN-L/TR TO-92-3 0 105 OBS
SPX431LAN/TR TO-92-3 0 105 OBS
SPX431LAS NSOIC8 OBS
SPX431LAS-L NSOIC8 0 105 OBS
SPX431LAS-L/TR NSOIC8 OBS
SPX431LAS/TR NSOIC8 OBS
SPX431LBM5-L SOT-23-5 0 105 OBS
SPX431LBM5-L/TR SOT-23-5 0 105 OBS
SPX431LCM SOT-23-3 OBS
SPX431LCM-L SOT-23-3 OBS
SPX431LCM-L/TR SOT-23-3 OBS
SPX431LCM/TR SOT-23-3 OBS
SPX431LCM1 SOT-89-3 OBS
SPX431LCM1-L SOT-89-3 OBS
SPX431LCM1-L/TR SOT-89-3 OBS
SPX431LCM1/TR SOT-89-3 OBS
SPX431LCN TO-92-3 0 105 OBS
SPX431LCN-L TO-92-3 0 105 OBS
SPX431LCN-L/TR TO-92-3 0 105 OBS
SPX431LCN/TR TO-92-3 0 105 OBS
SPX431LCS NSOIC8 OBS
SPX431LCS-L NSOIC8 0 105 OBS
SPX431LCS-L/TR NSOIC8 OBS
SPX431LCS/TR NSOIC8 OBS
SPX431LJAM1-L SOT-89-3 0 105 OBS
SPX431LJAN-L TO-92-3 0 105 OBS
SPX431LJCN-L TO-92-3 0 105 OBS
SPX431LM SOT-23-3 0 105 OBS
SPX431LM-L SOT-23-3 0 105 OBS
SPX431LM-L/TR SOT-23-3 OBS
SPX431LM/TR SOT-23-3 OBS
SPX431LM1 SOT-89-3 OBS
SPX431LM1-L SOT-89-3 0 105 OBS SPX431LM1-L/TR
SPX431LM1-L/TR SOT-89-3 0 105 OBS SPX1431M1-L/TR
SPX431LM1/TR SOT-89-3 0 105 OBS
SPX431LN TO-92-3 OBS
SPX431LN-L TO-92-3 0 105 OBS SPX431LN-L/TR
SPX431LN-L/TR TO-92-3 0 105 OBS SPX431AM1-L/TR
SPX431LN/TR TO-92-3 OBS
SPX431LS NSOIC8 OBS
SPX431LS-L NSOIC8 0 105 OBS
SPX431LS-L/TR NSOIC8 OBS
SPX431LS/TR NSOIC8 OBS
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.

Packaging

Pkg Code Details Quantities Dimensions
NSOIC8
  • JEDEC Reference: MS-012
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 128.4ºC/W (std); 96.8ºC/W (fused)
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: 98
  • Quantity per Reel: 2500
  • Quantity per Tube: 98
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Quadrant 1
  • Dimensions: mm
  • Length: 4.90
  • Width: 3.90
  • Thickness: 1.75
  • Lead Pitch: 1.27
SOT-23-3
  • JEDEC Reference: TO-236
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: n/a
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 180 x 8 x 4
  • Tape & Reel Unit Orientation: Single Pin at sprocket hole.
  • Dimensions: mm
  • Length: 2.90
  • Width: 1.30
  • Thickness: 1.12
  • Lead Pitch: 0.95
SOT-23-5
  • JEDEC Reference: MO-178
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 191ºC/W
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 180 x 8 x 12
  • Tape & Reel Unit Orientation: 3 Pins at sprocket hole.
  • Dimensions: mm
  • Length: 2.90
  • Width: 1.60
  • Thickness: 1.45
  • Lead Pitch: 0.95
SOT-89-3
  • JEDEC Reference: TO-243
  • MSL Pb-Free: L2 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 107.1ºC/W
  • Bulk Pack Style: Canister
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 2500
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Tab at sprocket hole.
  • Dimensions: mm
  • Length: 4.60 max
  • Width: 2.60 max
  • Thickness: 1.60
  • Lead Pitch: 1.50
TO-92-3
  • JEDEC Reference: n/a
  • MSL Pb-Free: n/a
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 131.9ºC/W
  • Bulk Pack Style: Ammo
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 2000
  • Quantity per Tube: n/a
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): Ammo
  • Tape & Reel Unit Orientation: Ammopack
  • Dimensions: inch
  • Length: 0.195 max
  • Width: 0.195 max
  • Thickness: 0.155 max
  • Lead Pitch: 0.055

Notifications

Distribution Date Description File
07/17/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM A: Fixed MBB label logo for DX204001 to MaxLinear logo. ADDENDUM B: Replaced ‘All other affected products outer box label’ with clearer pictures. Corrected Date Issued (from original PCN) issue date +90 days to August 30, 2023.
06/01/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability.
06/01/2023 In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM: Fixed MBB label logo for DX204001 to MaxLinear logo.
01/20/2022 Product Discontinuation Notice
11/04/2021 Product Discontinuation Notice
07/11/2017 Product Discontinuation Notification
01/12/2017 Standard tape and reel quantity will change from 2500 pieces to 3000 pieces for SOT23-3L/5L/6L.
07/26/2016 Product discontinuation notification. Discontinued.
04/01/2016 Qualification of alternate assembly subcon, JCET.
03/13/2014 Qualification of an alternate SOT89 package assembly site, Greatek, Taiwan, in addition to the current qualified assembly site, Cirtek, Philippines. Alternate assembly site.
01/13/2014 Qualification of an alternate qualified 3L TO-92 production site, Greatek, Taiwan, in addition to the current production site, Carsem, Malaysia. Alternate assembly site.
07/15/2013 Package marking change. To add manufacturing date code and lot traceability.
03/04/2009 Notice of Obsolescence Discontinued by Exar Corporation due to low market demand
02/28/2007 Product Obsolescence Letter and Discontinuation Notification. Discontinued.
02/02/2006 Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site
12/22/2004 Sipex has qualified CET to perform assembly operation fot the SOT23 -3 L package. Some of the CET SOT23 3 L pkg. dimensions are slightly different than the Jedec To-236 Variation AB std. Improve manufacturability

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The -F suffix indicates ROHS / Green compliance:
https://www.exar.com/quality-assurance-and-reliability/lead-free-program

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