TLV431ACDBZR Equivalent & Substitute Parts

Part Overview

The TLV431ACDBZR is an adjustable shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications. This Surface Mount device operates across a 1.24V to 6V output range with ±1% tolerance and delivers up to 15 mA output current. The component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter constraints.

Substiute Parts

TLV431ACDBZR

Texas InstrumentsIn Stock: 54051TLV431ACDBZR Datasheet

Current PartRFQ

TLV431AFTA

Diodes IncorporatedIn Stock: 181824TLV431AFTA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLV431ACDBZR is determined by the following criteria:

Mandatory Matching Parameters:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 1.24V
• Tolerance: ±1%
• Current - Output: 15 mA
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Voltage - Output (Max): May exceed 6V (substitute must support minimum 6V)
• Current - Cathode: May vary within operational limits
• Operating Temperature: May extend beyond 0°C ~ 70°C range
• Manufacturer: Different manufacturer acceptable if all mandatory parameters match

The TLV431AFTA meets all mandatory matching criteria and is therefore qualified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The TLV431AFTA qualifies as a direct substitute for the TLV431ACDBZR based on matching all mandatory electrical and mechanical parameters. Both components maintain Active product status and full RoHS3 compliance. The substitute part offers extended maximum output voltage (18V vs 6V) and wider operating temperature range (-40°C ~ 125°C vs 0°C ~ 70°C), providing additional design margin without compromising the primary application requirements. Cathode current variation (100 µA vs 80 µA) remains within acceptable operational limits for shunt reference applications. PCB layout and thermal management considerations remain unchanged due to identical packaging specifications.

Frequently Asked Questions (FAQ)

Q: Can TLV431AFTA replace TLV431ACDBZR in existing designs? A: Yes. Both parts share identical reference type, output type, minimum output voltage, tolerance, output current, and package specifications. The substitute meets or exceeds all mandatory electrical parameters.

Q: What is the significance of the higher maximum output voltage in TLV431AFTA? A: The TLV431AFTA supports 18V maximum output versus 6V for the main part. This extended range does not affect substitution compatibility; the substitute simply provides additional voltage headroom for applications requiring higher reference levels.

Q: Are there thermal or reliability differences between these parts? A: The TLV431AFTA operates across a wider temperature range (-40°C ~ 125°C vs 0°C ~ 70°C). Both parts maintain identical tolerance and current specifications. Extended temperature range in the substitute provides design flexibility for applications with broader environmental requirements.

Q: Does the cathode current difference affect circuit design? A: Cathode current variation (80 µA vs 100 µA) is within normal operational tolerance for shunt reference circuits. No circuit redesign is required for substitution.

Q: Are both parts available in the same package? A: Yes. Both TLV431ACDBZR and TLV431AFTA use identical TO-236-3 (SC-59, SOT-23-3) Surface Mount packaging, ensuring direct PCB compatibility without layout modifications.

Q: What compliance certifications apply to both parts? A: Both components are RoHS3 compliant with REACH Unaffected status and unlimited moisture sensitivity rating (MSL 1).