AP9101CK-AOTRG1 Equivalent & Substitute Parts

Part Overview

The AP9101CK-AOTRG1 is a Battery Protection IC for single-cell Lithium Ion/Polymer applications manufactured by Diodes Incorporated. This Surface Mount device in SC-74A/SOT-753 package provides over-current and over-voltage fault protection. The part is currently listed as Obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain identical electrical specifications and mechanical compatibility while offering improved availability and active product status.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Function	Battery Protection
Battery Chemistry	Lithium Ion/Polymer
Number of Cells	1
Fault Protection	Over Current, Over Voltage
Operating Temperature Range	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-25
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility for the AP9101CK-AOTRG1 is determined by strict parametric equivalence across the following criteria:

Critical Substitution Parameters:

Identical battery chemistry (Lithium Ion/Polymer)
Single-cell configuration
Matching fault protection capabilities (Over Current, Over Voltage)
Identical operating temperature range (-40°C ~ 85°C)
Same physical package (SC-74A, SOT-753 / SOT-25)
Surface Mount mounting type
Equivalent regulatory compliance (ROHS3, REACH Unaffected)

All substitute parts listed maintain 100% parametric alignment with the main part across these criteria. Substitution is based solely on these electrical and mechanical parameters. Packaging format (Tape & Reel vs. Cut Tape) does not affect functional equivalence.

Parameter Comparison

Part Number	Manufacturer	Battery Chemistry	Cells	Fault Protection	Temp Range	Package	Product Status	Inventory (Pcs)
AP9101CK-AOTRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Obsolete	934
AP9101CAK-AATRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	977
AP9101CAK-ABTRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Obsolete	3100
AP9101CAK-ACTRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	886
AP9101CAK-ADTRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	825
AP9101CAK-AETRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	769
AP9101CAK-AFTRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	876
AP9101CAK-AGTRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	732
AP9101CAK-AHTRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	719
AP9101CAK-AITRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	785
AP9101CAK-AJTRG1	Diodes Incorporated	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SC-74A, SOT-753	Active	1069

Engineering Selection Recommendations

All listed substitute parts are parametrically equivalent to the AP9101CK-AOTRG1 and maintain full compliance with ROHS3 and REACH requirements. Selection among active alternatives should prioritize parts with Active product status for long-term design support and supply chain stability.

Primary Recommendation: AP9101CAK-AJTRG1 offers the highest current inventory (1069 Pcs) with Active product status, ensuring sustained availability for production requirements.

Secondary Options: AP9101CAK-AATRG1, AP9101CAK-ACTRG1, AP9101CAK-ADTRG1, AP9101CAK-AETRG1, AP9101CAK-AFTRG1, AP9101CAK-AGTRG1, AP9101CAK-AHTRG1, and AP9101CAK-AITRG1 are all Active alternatives with adequate inventory levels.

Obsolete Alternative: AP9101CAK-ABTRG1 maintains Obsolete status but offers the highest inventory (3100 Pcs) if immediate stock availability is critical.

Frequently Asked Questions (FAQ)

Q: Can AP9101CAK-AATRG1 directly replace AP9101CK-AOTRG1 in existing designs? A: Yes. Both parts share identical electrical specifications, operating temperature range, fault protection capabilities, and physical package dimensions (SC-74A, SOT-753). No circuit modifications are required.

Q: What is the difference between Tape & Reel and Cut Tape packaging? A: Packaging format affects handling and assembly logistics only. Tape & Reel (TR) packaging is suitable for automated pick-and-place assembly, while Cut Tape (CT) & Digi-Reel® is appropriate for manual or lower-volume assembly. Electrical and mechanical performance are identical.

Q: Why is the main part listed as Obsolete? A: Obsolete status indicates the manufacturer has discontinued active production. Substitute parts with Active status provide equivalent functionality with ongoing manufacturer support and supply chain availability.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 Compliant status and REACH Unaffected designation, meeting current environmental and regulatory requirements.

Q: Can I use multiple substitute parts interchangeably in production? A: Yes. All substitute parts are parametrically equivalent and can be used interchangeably without design changes. However, maintaining a single part number per production run is recommended for supply chain consistency.

Q: What determines whether a part qualifies as a substitute? A: Substitution is based on matching battery chemistry (Lithium Ion/Polymer), cell count (1), fault protection type (Over Current, Over Voltage), operating temperature range (-40°C ~ 85°C), physical package (SC-74A, SOT-753), and regulatory compliance status.

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