AP431ARL-7 Equivalent & Substitute Parts

Part Overview

The AP431ARL-7 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable voltage regulation applications. This component features an adjustable output range from 2.495V to 36V with ±0.5% tolerance and 200 mA output current capability in a surface-mount SC-59 package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

AP431ARL-7

Diodes IncorporatedIn Stock: 8044AP431ARL-7 Datasheet

Current PartRFQ

AP431ARG-7

Diodes IncorporatedIn Stock: 23454AP431ARG-7 Datasheet

Parametric EquivalentRFQ

TL431IDBZR,215

Nexperia USA Inc.In Stock: 6134TL431IDBZR,215 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP431ARL-7 are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage Range: 2.495V minimum to 36V maximum
• Package / Case: TO-236-3, SC-59, SOT-23-3 (surface mount)
• Mounting Type: Surface Mount

Secondary Compatibility Parameters:

• Output Current: 200 mA (AP431ARL-7 specification)
• Tolerance: ±0.5% (AP431ARL-7 specification)
• Temperature Coefficient: 30 ppm/°C
• Operating Temperature Range: -20°C ~ 85°C minimum

Substitutes are grouped into two categories: parametric equivalents (identical electrical specifications) and manufacturer-recommended alternatives (functionally compatible with noted parameter variations).

Parameter Comparison

Engineering Selection Recommendations

AP431ARG-7 (Parametric Equivalent): This part is a direct parametric equivalent to the AP431ARL-7, manufactured by Diodes Incorporated. All electrical specifications, including output current (200 mA), tolerance (±0.5%), temperature coefficient (30 ppm/°C), and operating temperature range (-20°C ~ 85°C), are identical. Both parts share the same SC-59R package designation and ROHS3 compliance status. The AP431ARG-7 is suitable for direct replacement in applications where the AP431ARL-7 is specified, with no circuit modifications required. Both parts carry obsolete product status.

TL431IDBZR,215 (Manufacturer-Recommended Alternative): The TL431IDBZR,215 is a manufacturer-recommended substitute manufactured by Nexperia USA Inc. This part maintains the same adjustable voltage reference architecture and output voltage range (2.495V to 36V) within the same package family (TO-236-3, SC-59, SOT-23-3). Key differences include reduced output current (100 mA versus 200 mA), wider tolerance specification (±2% versus ±0.5%), and extended lower operating temperature limit (-40°C versus -20°C). The TL431IDBZR,215 carries active product status and MSL rating of 1 (unlimited moisture sensitivity), providing superior long-term availability and storage characteristics. This substitute is appropriate for applications where the reduced output current and wider tolerance are acceptable within circuit design margins.

Frequently Asked Questions (FAQ)

Q: Can AP431ARG-7 be used as a direct replacement for AP431ARL-7?

A: Yes. The AP431ARG-7 is a parametric equivalent with identical electrical specifications, package type, and compliance certifications. No circuit modifications are required for direct substitution.

Q: What are the key differences between AP431ARL-7 and TL431IDBZR,215?

A: The primary differences are output current (200 mA versus 100 mA), tolerance specification (±0.5% versus ±2%), and product status (obsolete versus active). The TL431IDBZR,215 also features extended lower operating temperature (-40°C) and superior moisture sensitivity rating (MSL 1 versus MSL 3).

Q: Is the TL431IDBZR,215 suitable for applications requiring 200 mA output current?

A: No. The TL431IDBZR,215 is rated for 100 mA maximum output current. Applications requiring 200 mA output current must use AP431ARL-7 or AP431ARG-7.

Q: Are all three parts in the same physical package?

A: All three parts use the TO-236-3, SC-59, SOT-23-3 package family and are surface-mount components. However, the supplier device package designation differs: AP431ARL-7 and AP431ARG-7 use SC-59R, while TL431IDBZR,215 uses TO-236AB. These designations refer to the same physical package with identical pin configuration and footprint.

Q: What is the impact of the ±2% tolerance specification on TL431IDBZR,215?

A: The ±2% tolerance is wider than the ±0.5% specification of AP431ARL-7 and AP431ARG-7. Applications with strict voltage regulation requirements may require additional external compensation or filtering when using the TL431IDBZR,215.

Q: Why is AP431ARL-7 marked as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Diodes Incorporated. Existing inventory may be available through authorized distributors, but long-term procurement should transition to active alternatives such as TL431IDBZR,215.

Q: What is the significance of MSL rating differences?

A: AP431ARL-7 and AP431ARG-7 carry MSL 3 (168 hours), requiring controlled storage and handling conditions. TL431IDBZR,215 carries MSL 1 (unlimited), allowing indefinite storage without moisture sensitivity concerns. This affects supply chain logistics and shelf-life management.