AP1703CWG-7 Equivalent & Substitute Parts

Part Overview

The AP1703CWG-7 is a Power Management Integrated Circuit (PMIC) supervisor manufactured by Diodes Incorporated. This device functions as a Simple Reset/Power-On Reset supervisor with push-pull, totem pole output configuration, monitoring a single voltage threshold at 4V. The part is packaged in SC-59-3 (SOT-23-3) surface mount format with an active low reset output and 100ms minimum reset timeout.

The AP1703CWG-7 is currently classified as Obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement. Alternative parts must maintain functional compatibility while meeting the electrical and mechanical requirements of the original application.

Substiute Parts

AP1703CWG-7

Diodes IncorporatedIn Stock: 2097AP1703CWG-7 Datasheet

Current PartRFQ

APX809-44SRG-7

Diodes IncorporatedIn Stock: 6466APX809-44SRG-7 Datasheet

DirectRFQ

AP1701CWG-7

Diodes IncorporatedIn Stock: 2151AP1701CWG-7 Datasheet

Parametric EquivalentRFQ

AP1703CWG-7

Diodes IncorporatedIn Stock: 2097AP1703CWG-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP1703CWG-7 are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Single voltage monitoring channel (Number of Voltages Monitored = 1)
• Push-pull, totem pole output configuration
• Active low reset logic
• Simple reset/power-on reset functionality
• Surface mount packaging in SC-59-3 or equivalent SOT-23-3 format

Secondary Compatibility Considerations:

• Voltage threshold tolerance (4V nominal)
• Reset timeout duration (100ms minimum)
• Operating temperature range capability
• RoHS3 compliance and REACH unaffected status

The AP1701CWG-7 is a parametric equivalent with identical electrical specifications and the same SC-59-3 package. The APX809-44SRG-7 is a direct manufacturer substitute with compatible functionality but operates across an extended temperature range (-40°C ~ 85°C) and uses an alternative SOT23R package variant, both acceptable for the SC-59-3 footprint.

Parameter Comparison

Engineering Selection Recommendations

AP1701CWG-7 (Parametric Equivalent - Recommended Primary Choice)

The AP1701CWG-7 is the preferred substitute for the obsolete AP1703CWG-7. This part maintains identical electrical specifications including 4V voltage threshold, 100ms minimum reset timeout, and 0°C ~ 70°C operating temperature range. Both devices use the SC-59-3 package with identical pinout and footprint compatibility. The AP1701CWG-7 holds Active product status, ensuring long-term availability and supply chain stability. Moisture sensitivity is improved (MSL 1 vs. MSL 3), reducing handling and storage requirements. Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements.

APX809-44SRG-7 (Direct Manufacturer Substitute - Extended Temperature Option)

The APX809-44SRG-7 serves as an alternative when extended operating temperature range is required. This part operates from -40°C ~ 85°C, compared to the original 0°C ~ 70°C specification. The voltage threshold is 4.38V (versus 4V), and reset timeout is 140ms minimum (versus 100ms). The SOT23R package is mechanically compatible with SC-59-3 footprints. Moisture sensitivity is superior (MSL 1). This substitute is suitable for applications requiring wider temperature operation or when the slightly higher voltage threshold and longer reset timeout are acceptable within system design margins. Product status is Discontinued at DiGi Electronics; verify current availability through alternative distribution channels.

Both substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can the AP1701CWG-7 be used as a direct replacement for the AP1703CWG-7?

A: Yes. The AP1701CWG-7 is a parametric equivalent with identical voltage threshold (4V), reset timeout (100ms minimum), operating temperature range (0°C ~ 70°C), and SC-59-3 package. Pinout and electrical function are identical. The primary advantage is Active product status versus Obsolete status of the original part.

Q: What are the key differences between the AP1701CWG-7 and APX809-44SRG-7?

A: The AP1701CWG-7 matches the original specifications exactly. The APX809-44SRG-7 offers extended temperature range (-40°C ~ 85°C), higher voltage threshold (4.38V vs. 4V), and longer reset timeout (140ms vs. 100ms). Both use compatible SOT-23-3 packages. Select APX809-44SRG-7 only if extended temperature operation is required and the parameter differences are acceptable for your application.

Q: Are both substitute parts available in the same package as the original AP1703CWG-7?

A: The AP1701CWG-7 uses the identical SC-59-3 package. The APX809-44SRG-7 uses SOT23R, which is mechanically and electrically compatible with SC-59-3 footprints and pinouts, allowing direct PCB substitution without layout modifications.

Q: Do the substitute parts meet the same regulatory requirements as the AP1703CWG-7?

A: Yes. Both AP1701CWG-7 and APX809-44SRG-7 are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original part.

Q: What is the moisture sensitivity difference, and does it matter?

A: The original AP1703CWG-7 has MSL 3 (168 hours), while both substitutes have MSL 1 (unlimited). MSL 1 is superior, requiring less stringent moisture control during storage and handling. This is an advantage for supply chain management and reduces risk of moisture-related failures.

Q: Which substitute should I choose for a new design?

A: Use the AP1701CWG-7 for standard applications matching the original 0°C ~ 70°C temperature range. Use the APX809-44SRG-7 only if your application requires extended temperature operation (-40°C ~ 85°C) and the higher voltage threshold (4.38V) and longer reset timeout (140ms) are compatible with your system design.