AP431RL-7 Equivalent & Substitute Parts

Part Overview

The AP431RL-7 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable voltage regulation applications. This component provides a fixed output voltage of 2.495V with adjustability up to 36V, supporting output currents up to 200mA with ±1% tolerance. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

AP431RL-7

Diodes IncorporatedIn Stock: 8163AP431RL-7 Datasheet

Current PartRFQ

AP431WG-7

Diodes IncorporatedIn Stock: 18074AP431WG-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP431RL-7 is determined by strict equivalence across the following critical parameters:

• Reference Type: Shunt voltage reference architecture
• Output Type: Adjustable voltage output capability
• Voltage Range: Minimum output 2.495V, maximum output 36V
• Current Rating: Output current of 200mA
• Tolerance: ±1% accuracy specification
• Temperature Coefficient: 30ppm/°C thermal stability
• Cathode Current: 500µA minimum operating current
• Operating Temperature Range: -20°C to 85°C
• Package Compatibility: SC-59 or equivalent SOT-23-3 surface mount package
• Compliance: ROHS3 and REACH compliance status

The AP431WG-7 qualifies as a parametric equivalent based on identical electrical specifications across all critical parameters. Additional cross-reference alternatives (TL431IDBZR, TL431AIDBZR, TL431IDBZT, TL431BIDBZT, AS431BNTR-E1) are listed as functional substitutes within the same reference architecture family.

Parameter Comparison

Engineering Selection Recommendations

The AP431WG-7 is the primary parametric equivalent for the AP431RL-7, offering identical electrical specifications and compliance certifications. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing environments. The difference between these parts is limited to supplier device packaging designation (SC-59R versus SC-59-3), which does not affect functional performance or pin compatibility.

For applications requiring the AP431RL-7, the AP431WG-7 provides direct substitution with no circuit redesign required. The listed cross-reference alternatives (TL431 series and AS431BNTR-E1) represent functionally compatible shunt voltage reference architectures from alternative manufacturers and should be evaluated for availability and supply chain continuity when the primary Diodes Incorporated options are unavailable.

Frequently Asked Questions (FAQ)

Q: Can the AP431WG-7 be used as a direct replacement for the AP431RL-7?

A: Yes. The AP431WG-7 is a parametric equivalent with identical electrical specifications, tolerance, temperature coefficient, and operating range. Pin configuration and package footprint are compatible.

Q: What is the difference between SC-59R and SC-59-3 packaging?

A: Both designations refer to the same SC-59 surface mount package with three leads (SOT-23-3). The suffix variation indicates supplier-specific packaging nomenclature and does not affect electrical performance or PCB compatibility.

Q: Are the TL431 series parts suitable substitutes?

A: The TL431 series represents an alternative shunt voltage reference architecture from a different manufacturer. Functional compatibility exists based on shared reference type and adjustable output characteristics, but component selection should be verified against specific application requirements and supply chain availability.

Q: What compliance certifications apply to substitute parts?

A: Both the AP431RL-7 and AP431WG-7 maintain ROHS3 compliance and REACH unaffected status. Compliance documentation should be verified with the component supplier for any alternative parts selected.

Q: Is the ±1% tolerance specification maintained across all substitutes?

A: The AP431WG-7 maintains the ±1% tolerance specification. Tolerance specifications for alternative manufacturers' parts should be confirmed against their respective datasheets prior to selection.