AP9101CAK-CATRG1 Equivalent & Substitute Parts

Part Overview

The AP9101CAK-CATRG1 is a battery protection IC for single-cell lithium ion/polymer applications, manufactured by Diodes Incorporated. This Surface Mount Device (SMD) in SOT-25 packaging provides over-current and over-voltage fault protection for battery management systems. The part is currently in Active product status with 971 units in stock. Due to component lifecycle management, obsolete variants and alternative packaging configurations are available as direct parametric equivalents for design flexibility and supply chain continuity.

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
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-25
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution for the AP9101CAK-CATRG1 is determined by strict parametric equivalence across the following criteria:

Primary Substitution Criteria:

Identical base product number (AP9101 series)
Identical manufacturer (Diodes Incorporated)
Identical function (Battery Protection for single-cell lithium ion/polymer)
Identical fault protection features (Over Current, Over Voltage)
Identical package type (SOT-25 / SC-74A, SOT-753)
Identical operating temperature range (-40°C ~ 85°C)
Identical compliance certifications (ROHS3, REACH Unaffected)

Packaging Variants: Substitute parts differ only in packaging configuration (Tape & Reel vs. Cut Tape vs. Cut Tape & Digi-Reel®), which affects handling and quantity per reel but does not alter electrical or mechanical compatibility.

Cross-Manufacturer Alternative: The S-8241ABKMC-GBKT2G from ABLIC Inc. is included as a parametric equivalent with identical electrical specifications and operating parameters, though packaged in SOT-23-5 instead of SOT-25. This part is marked "Not For New Designs" and represents a legacy alternative.

Parameter Comparison

Part Number	Manufacturer	Product Status	Packaging	Package Type	Inventory (Pcs)	Battery Chemistry	Fault Protection	Operating Temp	RoHS Status
AP9101CAK-CATRG1	Diodes Incorporated	Active	Tape & Reel (TR)	SOT-25	971	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CAK-ABTRG1	Diodes Incorporated	Obsolete	Cut Tape (CT) & Digi-Reel®	SOT-25	3100	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CAK-AKTRG1	Diodes Incorporated	Obsolete	Cut Tape (CT) & Digi-Reel®	SOT-25	8700	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CAK-ANTRG1	Diodes Incorporated	Obsolete	Cut Tape (CT)	SOT-25	9300	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CAK-BRTRG1	Diodes Incorporated	Obsolete	Tape & Reel (TR)	SOT-25	3946	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CAK-CPTRG1	Diodes Incorporated	Obsolete	Tape & Reel (TR)	SOT-25	3732	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CK-AHTRG1	Diodes Incorporated	Obsolete	Cut Tape (CT) & Digi-Reel®	SOT-25	14500	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CK-AKTRG1	Diodes Incorporated	Obsolete	Cut Tape (CT)	SOT-25	3820	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CK-ASTRG1	Diodes Incorporated	Obsolete	Cut Tape (CT)	SOT-25	9400	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
AP9101CK-AUTRG1	Diodes Incorporated	Obsolete	Cut Tape (CT)	SOT-25	4300	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant
S-8241ABKMC-GBKT2G	ABLIC Inc.	Not For New Designs	Tape & Reel (TR)	SOT-23-5	5280	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	ROHS3 Compliant

Engineering Selection Recommendations

For Active Production: The AP9101CAK-CATRG1 (Active status, Tape & Reel packaging) is the primary selection for new designs. This part maintains current manufacturer support and is ROHS3 compliant with unlimited moisture sensitivity rating.

For Obsolete Part Replacement: All AP9101 variants from Diodes Incorporated marked as Obsolete are direct parametric substitutes. Selection among these variants depends solely on packaging requirements:

Tape & Reel (TR) variants: AP9101CAK-BRTRG1, AP9101CAK-CPTRG1
Cut Tape (CT) & Digi-Reel® variants: AP9101CAK-ABTRG1, AP9101CAK-AKTRG1, AP9101CK-AHTRG1
Cut Tape (CT) variants: AP9101CAK-ANTRG1, AP9101CK-AKTRG1, AP9101CK-ASTRG1, AP9101CK-AUTRG1

All obsolete AP9101 variants maintain identical electrical specifications, operating temperature range, and compliance certifications.

Cross-Manufacturer Alternative: The S-8241ABKMC-GBKT2G from ABLIC Inc. is electrically equivalent but is marked "Not For New Designs." This part is suitable only for legacy system maintenance or replacement scenarios where the SOT-23-5 package is compatible with existing PCB layouts. Pin configuration must be verified before substitution.

Frequently Asked Questions (FAQ)

Q: Can I substitute an obsolete AP9101 variant for the active AP9101CAK-CATRG1?

A: Yes. All AP9101 variants listed are parametric equivalents with identical electrical function, fault protection, operating temperature, and compliance status. Substitution is valid from an engineering standpoint. However, verify packaging compatibility with your assembly process and PCB design.

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

A: These are handling and delivery formats only. Tape & Reel (TR) provides components on continuous tape in full reels for automated pick-and-place assembly. Cut Tape (CT) provides components on tape segments cut to specified lengths. Digi-Reel® is a proprietary format combining cut tape with custom reel packaging. All formats contain identical components with no electrical differences.

Q: Is the S-8241ABKMC-GBKT2G from ABLIC Inc. a direct replacement?

A: The S-8241ABKMC-GBKT2G is electrically equivalent with identical battery protection function, fault protection features, and operating temperature range. However, it uses SOT-23-5 packaging instead of SOT-25. Physical pin layout and PCB footprint differ. Substitution requires PCB redesign or layout verification. This part is marked "Not For New Designs" and is recommended only for legacy applications.

Q: Are all these parts ROHS3 compliant?

A: Yes. All parts listed, including the ABLIC alternative, are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which substitute part has the highest inventory availability?

A: AP9101CK-AHTRG1 has the highest inventory at 14,500 units. AP9101CAK-ANTRG1 and AP9101CK-ASTRG1 follow with 9,300 and 9,400 units respectively. Inventory levels should be confirmed with your supplier before final part selection.

Q: Can I mix packaging formats in a single production run?

A: Electrically, yes. All AP9101 variants are functionally identical. However, mixing packaging formats may complicate assembly logistics and traceability. Consult your manufacturing and quality procedures for packaging consistency requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message