AS431ARTR-E1 Equivalent & Substitute Parts

Part Overview

The AS431ARTR-E1 is an adjustable shunt voltage reference IC manufactured by Diodes Incorporated, designed for precision voltage regulation and reference applications. This Surface Mount device operates across a wide temperature range (-40°C to 125°C) and delivers stable output voltage from 2.5V to 36V with ±0.5% tolerance. The part is currently in active production status and widely used in power management circuits requiring accurate voltage references. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and access to alternative packaging or inventory options when the primary part becomes unavailable.

Substiute Parts

AS431ARTR-E1

Diodes IncorporatedIn Stock: 75119AS431ARTR-E1 Datasheet

Current PartRFQ

AS431ARTR-G1

Diodes IncorporatedIn Stock: 22177AS431ARTR-G1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AS431ARTR-E1 are qualified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Matching Parameters:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 2.5V
• Voltage - Output (Max): 36V
• Current - Output: 100 mA
• Tolerance: ±0.5%
• Temperature Coefficient: 20ppm/°C Typical
• Current - Cathode: 1 mA
• Operating Temperature: -40°C ~ 125°C (TA)
• Package / Case: TO-243AA
• Supplier Device Package: SOT-89-3
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

The AS431ARTR-G1 qualifies as a parametric equivalent substitute. Both parts share identical electrical specifications and mechanical packaging. The primary difference lies in packaging format (Tape & Reel versus Cut Tape & Digi-Reel®) and Moisture Sensitivity Level (MSL 1 versus MSL 3), which do not affect functional performance in standard operating conditions.

Parameter Comparison

Engineering Selection Recommendations

The AS431ARTR-G1 is a direct parametric equivalent to the AS431ARTR-E1 and is suitable for substitution in applications where the electrical and thermal specifications are identical. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

Selection between AS431ARTR-E1 and AS431ARTR-G1 should be based on:

Packaging and Handling Requirements: The AS431ARTR-E1 is supplied in Tape & Reel format with MSL 1 rating, suitable for high-volume automated assembly with unlimited shelf life under controlled conditions. The AS431ARTR-G1 is supplied in Cut Tape & Digi-Reel® format with MSL 3 rating, requiring storage within 168 hours of moisture exposure at specified humidity levels.

Supply Chain Availability: Current inventory shows 75,100 pieces of AS431ARTR-E1 and 22,100 pieces of AS431ARTR-G1 in stock. Selection may depend on immediate availability and procurement lead times.

Application Context: Both parts are suitable for identical circuit designs and PCB layouts. No design modifications are required when substituting between these two part numbers.

Frequently Asked Questions (FAQ)

Q: Can AS431ARTR-G1 be used as a direct replacement for AS431ARTR-E1 in production designs?

A: Yes. The AS431ARTR-G1 is a parametric equivalent with identical electrical specifications, operating temperature range, tolerance, and package dimensions. No circuit modifications are required.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape in reel format, optimized for high-volume automated pick-and-place assembly. Cut Tape & Digi-Reel® packaging supplies components on cut tape segments or alternative reel formats, suitable for lower-volume or mixed-component assembly operations. Both formats contain identical components.

Q: Does the MSL 3 rating of AS431ARTR-G1 affect performance compared to MSL 1 of AS431ARTR-E1?

A: Moisture Sensitivity Level (MSL) ratings specify storage and handling requirements prior to soldering, not post-assembly performance. Both parts deliver identical electrical performance once soldered to the PCB. MSL 3 requires storage within 168 hours of moisture exposure at specified humidity levels, while MSL 1 has unlimited shelf life under controlled conditions.

Q: Are both parts suitable for the full -40°C to 125°C operating temperature range?

A: Yes. Both AS431ARTR-E1 and AS431ARTR-G1 are rated for -40°C to 125°C ambient temperature operation with identical temperature coefficient specifications.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Both parts use identical SOT-89-3 package dimensions and pin configurations. No PCB layout modifications are required when substituting between these part numbers.