AP1704EWG-7 Equivalent & Substitute Parts

Part Overview

The AP1704EWG-7 is a supervisor integrated circuit from Diodes Incorporated designed for power management applications. It functions as a simple reset/power-on reset circuit with push-pull, totem pole output configuration, monitoring a single voltage threshold at 2.93V. The device is packaged in SC-59-3 (SOT-23-3) surface mount format.

The AP1704EWG-7 is classified as obsolete, making it necessary to identify equivalent and substitute components for new designs and ongoing production support. Alternative parts must maintain functional compatibility while meeting current design requirements and compliance standards.

Substiute Parts

AP1704EWG-7

Diodes IncorporatedIn Stock: 9236AP1704EWG-7 Datasheet

Current PartRFQ

APX810-31SRG-7

Diodes IncorporatedIn Stock: 4905APX810-31SRG-7 Datasheet

DirectRFQ

AP1702EWG-7

Diodes IncorporatedIn Stock: 3470AP1702EWG-7 Datasheet

Parametric EquivalentRFQ

AP1704EWG-7

Diodes IncorporatedIn Stock: 9236AP1704EWG-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP1704EWG-7 is determined by the following critical parameters:

Functional Compatibility Requirements:

• Type: Simple Reset/Power-On Reset
• Number of Voltages Monitored: 1
• Output Configuration: Push-Pull, Totem Pole
• Reset Logic: Active High
• Package / Case: TO-236-3, SC-59, SOT-23-3 (physical and electrical compatibility)

Allowable Parameter Variations:

• Voltage Threshold: Must be 2.93V for direct parametric equivalence
• Reset Timeout: Minimum 100ms acceptable; higher values permitted if circuit design accommodates
• Operating Temperature Range: May extend beyond 0°C ~ 70°C without affecting substitution validity
• Moisture Sensitivity Level: May be lower (more favorable) than MSL 3
• Product Status: Active or Not For New Designs acceptable; Obsolete status indicates end-of-life

Identified Substitutes:

1. AP1702EWG-7 — Parametric equivalent with identical voltage threshold (2.93V), reset timeout (100ms), and package (SC-59-3). Product status is Active. MSL improved to 1. Direct replacement for AP1704EWG-7.

2. APX810-31SRG-7 — Direct manufacturer substitute with compatible output configuration and package. Voltage threshold differs at 3.08V and reset timeout extends to 140ms minimum. Operating temperature range expands to -40°C ~ 85°C. Product status is Not For New Designs. MSL improved to 1. Suitable where threshold and timeout variations are acceptable.

Parameter Comparison

Engineering Selection Recommendations

For New Designs: Select AP1702EWG-7. This part maintains identical electrical specifications (2.93V threshold, 100ms reset timeout, 0°C ~ 70°C operating range) and package compatibility with the AP1704EWG-7. Product status is Active, ensuring long-term availability and supply chain stability. Moisture sensitivity is improved to MSL 1, providing superior handling characteristics during manufacturing and storage.

For Existing Production Support: AP1702EWG-7 is the primary recommendation due to Active product status and parametric equivalence. If supply constraints exist, APX810-31SRG-7 is acceptable provided circuit design accommodates the 3.08V threshold (0.15V higher) and 140ms reset timeout (40ms longer). The expanded operating temperature range (-40°C ~ 85°C) offers additional environmental margin. Both parts are ROHS3 compliant and REACH unaffected.

Compliance Considerations: All identified substitutes maintain ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the AP1704EWG-7. MSL ratings for substitute parts are equal to or better than the original, reducing moisture-related risk during assembly and storage.

Frequently Asked Questions (FAQ)

Q: Can AP1702EWG-7 be used as a direct drop-in replacement for AP1704EWG-7?

A: Yes. AP1702EWG-7 is a parametric equivalent with identical voltage threshold (2.93V), reset timeout (100ms), operating temperature range (0°C ~ 70°C), and package (SC-59-3). No circuit modifications are required.

Q: What is the key difference between AP1702EWG-7 and APX810-31SRG-7?

A: AP1702EWG-7 matches the AP1704EWG-7 specifications exactly. APX810-31SRG-7 has a higher voltage threshold (3.08V vs. 2.93V) and longer reset timeout (140ms vs. 100ms), with an expanded operating temperature range (-40°C ~ 85°C). Use APX810-31SRG-7 only if your circuit design accommodates these parameter differences.

Q: Are all substitute parts available in the same package?

A: Yes. All parts (AP1704EWG-7, AP1702EWG-7, and APX810-31SRG-7) use TO-236-3, SC-59, SOT-23-3 package format with surface mount configuration, ensuring physical and electrical compatibility on the PCB.

Q: What does "Obsolete" product status mean for AP1704EWG-7?

A: Obsolete status indicates the part has reached end-of-life and is no longer in active production. Existing inventory may be available, but long-term supply cannot be guaranteed. Transition to an Active product (AP1702EWG-7) is recommended for new designs and ongoing production.

Q: Does MSL rating affect substitution compatibility?

A: MSL rating does not affect electrical or functional compatibility. It specifies moisture sensitivity during storage and handling. AP1702EWG-7 and APX810-31SRG-7 have MSL 1 (unlimited shelf life), which is superior to AP1704EWG-7 (MSL 3, 168 hours). Lower MSL values reduce manufacturing risk.

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

A: No. All parts are ROHS3 compliant and REACH unaffected, maintaining identical regulatory compliance status.