AS431BZ-E1 Equivalent & Substitute Parts

Part Overview

The AS431BZ-E1 is a shunt voltage reference integrated circuit manufactured by Diodes Incorporated, classified as a Power Management (PMIC) component. This adjustable shunt reference operates across a 2.5V to 36V output range with ±1% tolerance and 100 mA output capability in a TO-92 through-hole package. The AS431BZ-E1 is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, maintenance, and production continuity. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

AS431BZ-E1

Diodes IncorporatedIn Stock: 983AS431BZ-E1 Datasheet

Current PartRFQ

AS431BZTR-E1

Diodes IncorporatedIn Stock: 92415AS431BZTR-E1 Datasheet

Parametric EquivalentRFQ

AS431BZTR-G1

Diodes IncorporatedIn Stock: 314459AS431BZTR-G1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AS431BZ-E1 are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain identical:

Electrical Specifications:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 2.5V
• Voltage - Output (Max): 36V
• Current - Output: 100 mA
• Tolerance: ±1%
• Temperature Coefficient: 20ppm/°C Typical
• Current - Cathode: 1 mA
• Operating Temperature: -40°C ~ 125°C (TA)

Mechanical Specifications:

• Mounting Type: Through Hole
• Package / Case: TO-226-3, TO-92-3 (TO-226AA) Formed Leads
• Supplier Device Package: TO-92

Compliance & Regulatory:

• RoHS Status: RoHS Compliant or ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

All substitute parts listed maintain these specifications without deviation. The primary distinction between the main part and substitutes is packaging format (bulk versus cut tape) and product status (obsolete versus active).

Parameter Comparison

Engineering Selection Recommendations

AS431BZTR-E1 and AS431BZTR-G1 are direct parametric equivalents to the AS431BZ-E1. Both substitute parts are manufactured by Diodes Incorporated and maintain identical electrical performance and mechanical compatibility. The primary differences are:

1. Product Status: Both substitute parts carry active product status, ensuring continued availability and manufacturing support, whereas the AS431BZ-E1 is obsolete.

2. RoHS Compliance: Substitute parts meet ROHS3 Compliant standards, representing current regulatory compliance levels.

3. Packaging Format: The AS431BZ-E1 is supplied in bulk packaging, while AS431BZTR-E1 and AS431BZTR-G1 are supplied in cut tape (CT) format, suitable for automated assembly processes.

4. Inventory Availability: AS431BZTR-E1 maintains 92,400 units in stock, and AS431BZTR-G1 maintains 314,400 units in stock, providing substantial supply security compared to the 874 units of the obsolete AS431BZ-E1.

For new designs, production continuity, or component replacement, either AS431BZTR-E1 or AS431BZTR-G1 provides equivalent electrical performance with improved product lifecycle status and regulatory compliance. Selection between the two substitute parts may be determined by packaging quantity requirements and supplier inventory allocation.

Frequently Asked Questions (FAQ)

Q: Can AS431BZTR-E1 or AS431BZTR-G1 be used as direct replacements for AS431BZ-E1 in existing designs?

A: Yes. Both substitute parts are parametric equivalents with identical electrical specifications (2.5V to 36V adjustable output, ±1% tolerance, 100 mA output, 20ppm/°C temperature coefficient) and mechanical compatibility (TO-92 through-hole package). The only differences are packaging format (cut tape versus bulk) and product status (active versus obsolete).

Q: What is the difference between AS431BZTR-E1 and AS431BZTR-G1?

A: Both parts are electrically and mechanically identical. The difference is in the suffix designation (E1 versus G1), which typically indicates different manufacturing batches or date codes. Both are supplied in cut tape format and carry active product status. Selection may be based on supplier availability and inventory allocation.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both AS431BZTR-E1 and AS431BZTR-G1 are ROHS3 Compliant, meeting current regulatory requirements. The original AS431BZ-E1 is RoHS Compliant. All parts are REACH Unaffected.

Q: What is the moisture sensitivity level for these parts?

A: All parts, including the main part and substitutes, have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can these parts be used in automated assembly processes?

A: The substitute parts AS431BZTR-E1 and AS431BZTR-G1 are supplied in cut tape (CT) format, which is compatible with automated pick-and-place assembly equipment. The original AS431BZ-E1 is supplied in bulk packaging, which requires manual handling or tape-and-reel conversion for automated assembly.

Q: What is the operating temperature range for these parts?

A: All parts operate across -40°C to 125°C (TA), providing consistent thermal performance across the specified range.

Q: Are there any electrical performance differences between the main part and substitutes?

A: No. All parts maintain identical electrical specifications: 2.5V minimum output, 36V maximum output, 100 mA output capability, ±1% tolerance, 20ppm/°C temperature coefficient, and 1 mA cathode current.