LM1086CT-5.0 Equivalent & Substitute Parts

Part Overview

The LM1086CT-5.0 is a linear voltage regulator IC from Texas Instruments, delivering a fixed 5V output at 1.5A in a TO-220-3 package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The LM1086CT-5.0/NOPB represents the active production variant with improved compliance status, while higher-current alternatives and cross-manufacturer options provide expanded design flexibility for applications requiring increased output current or extended operating temperature ranges.

Substiute Parts

LM1086CT-5.0

Texas InstrumentsIn Stock: 1791LM1086CT-5.0 Datasheet

Current PartRFQ

LM1086CT-5.0/NOPB

Texas InstrumentsIn Stock: 12430LM1086CT-5.0/NOPB Datasheet

DirectRFQ

LD1085V50

STMicroelectronicsIn Stock: 5096LD1085V50 Datasheet

MFR RecommendedRFQ

LT1084CT-5#PBF

Analog Devices Inc.In Stock: 4056LT1084CT-5#PBF Datasheet

MFR RecommendedRFQ

LT1085CT-5#PBF

Analog Devices Inc.In Stock: 1237LT1085CT-5#PBF Datasheet

MFR RecommendedRFQ

LT1085IT-5#PBF

Analog Devices Inc.In Stock: 2051LT1085IT-5#PBF Datasheet

MFR RecommendedRFQ

LT1086CT-5#PBF

Analog Devices Inc.In Stock: 1999LT1086CT-5#PBF Datasheet

MFR RecommendedRFQ

LT1086IT-5#PBF

Analog Devices Inc.In Stock: 1374LT1086IT-5#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM1086CT-5.0 is determined by the following criteria:

Direct Equivalents (Same Output Current - 1.5A):

• LM1086CT-5.0/NOPB (Texas Instruments): Identical electrical specifications with active product status and RoHS3 compliance
• LT1086CT-5#PBF (Analog Devices Inc.): Matching 1.5A output current, TO-220-3 package, with reduced maximum input voltage (20V vs. 25V)
• LT1086IT-5#PBF (Analog Devices Inc.): Identical to LT1086CT-5#PBF with extended operating temperature range (-40°C ~ 125°C)

Higher Current Alternatives (3A Output):

• LD1085V50 (STMicroelectronics): 3A output current, increased maximum input voltage (30V), TO-220 package, extended temperature range (-40°C ~ 125°C)
• LT1085CT-5#PBF (Analog Devices Inc.): 3A output current, TO-220-3 package, reduced maximum input voltage (20V)
• LT1085IT-5#PBF (Analog Devices Inc.): Identical to LT1085CT-5#PBF with extended operating temperature range (-40°C ~ 125°C)

Highest Current Alternative (5A Output):

• LT1084CT-5#PBF (Analog Devices Inc.): 5A output current, TO-220-3 package, reduced maximum input voltage (20V)

All substitutes maintain fixed 5V output, positive output configuration, TO-220 package family, and through-hole mounting. Substitution selection depends on required output current capacity, maximum input voltage tolerance, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (1.5A Applications): LM1086CT-5.0/NOPB is the primary substitute, offering identical electrical performance with active product status and RoHS3 compliance. This part eliminates obsolescence risk while maintaining full compatibility with existing designs.

For Extended Temperature Range (1.5A Applications): LT1086IT-5#PBF provides the same 1.5A output current with extended operating temperature range (-40°C ~ 125°C) and active product status. Maximum input voltage is reduced to 20V; verify circuit design compatibility before selection.

For Higher Current Capacity (3A Applications): LD1085V50 offers the highest maximum input voltage (30V) with 3A output current and extended temperature range. LT1085CT-5#PBF and LT1085IT-5#PBF provide 3A output with reduced maximum input voltage (20V); the IT variant extends operating temperature to -40°C ~ 125°C.

For Maximum Current Capacity (5A Applications): LT1084CT-5#PBF delivers 5A output current in the same TO-220-3 package. Maximum input voltage is limited to 20V; verify circuit design compatibility.

All recommended substitutes carry active product status and RoHS3 compliance, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can LM1086CT-5.0/NOPB be used as a direct replacement for LM1086CT-5.0? A: Yes. Both parts deliver identical electrical specifications: 5V fixed output, 1.5A output current, 1.5V dropout voltage at 1.5A, and TO-220-3 package. The /NOPB variant is the active production part with RoHS3 compliance.

Q: What is the key difference between LT1086CT-5#PBF and LT1086IT-5#PBF? A: Both deliver 1.5A output current and identical electrical performance. The IT variant extends operating temperature range to -40°C ~ 125°C, compared to 0°C ~ 125°C for the CT variant. Select based on application temperature requirements.

Q: Can I use a 3A part (LD1085V50, LT1085CT-5#PBF, or LT1085IT-5#PBF) in place of the 1.5A LM1086CT-5.0? A: Yes, from an electrical standpoint. Higher-current regulators are backward-compatible with lower-current applications. However, verify that circuit board layout, thermal management, and component footprint accommodate the substitute part. All three 3A options maintain 5V fixed output and TO-220 package family compatibility.

Q: What is the maximum input voltage for each substitute? A: LM1086CT-5.0/NOPB and LM1086CT-5.0 support 25V maximum input. LT1086CT-5#PBF, LT1086IT-5#PBF, LT1085CT-5#PBF, LT1085IT-5#PBF, and LT1084CT-5#PBF support 20V maximum input. LD1085V50 supports 30V maximum input. Verify your circuit design operates within the selected part's maximum input voltage specification.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All recommended substitutes carry RoHS3 compliance status. The original LM1086CT-5.0 is RoHS non-compliant; LM1086CT-5.0/NOPB resolves this compliance requirement.

Q: Which substitute offers the widest operating temperature range? A: LD1085V50, LT1085IT-5#PBF, and LT1086IT-5#PBF all support -40°C ~ 125°C operating temperature range, compared to 0°C ~ 125°C for the original part and most other substitutes.

Q: Can I use LT1084CT-5#PBF (5A) in a 1.5A application? A: Yes. The 5A part is electrically compatible with 1.5A applications and will operate correctly at lower current levels. Verify circuit board layout and thermal design accommodate the substitute. Maximum input voltage is limited to 20V.