AP9101CAK-BUTRG1 Equivalent & Substitute Parts

Part Overview

The AP9101CAK-BUTRG1 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. The part is currently Active in product status with 739 units in stock. Due to packaging format availability and inventory considerations, equivalent substitute parts are available across different tape and reel configurations from the same manufacturer base product line.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Base Product Number	AP9101
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 of AP9101CAK-BUTRG1 is determined by the following criteria:

Mandatory Matching Parameters:

Base Product Number: AP9101
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

Variable Parameters (Allowed to Differ):

Packaging Format: Tape & Reel (TR), Cut Tape (CT), or Cut Tape & Digi-Reel® combinations
Product Status: Active or Obsolete
Inventory Availability

All substitute parts listed maintain identical electrical specifications, thermal characteristics, and compliance certifications. Differences exist only in packaging delivery format and product lifecycle status.

Parameter Comparison

Part Number	Manufacturer	Packaging	Product Status	Inventory (Pcs)	Battery Chemistry	Fault Protection	Operating Temp	Package Type	RoHS Status
AP9101CAK-BUTRG1	Diodes Incorporated	Tape & Reel (TR)	Active	739	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CAK-ABTRG1	Diodes Incorporated	Cut Tape (CT) & Digi-Reel®	Obsolete	3100	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CAK-AKTRG1	Diodes Incorporated	Cut Tape (CT) & Digi-Reel®	Obsolete	8700	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CAK-ANTRG1	Diodes Incorporated	Cut Tape (CT)	Obsolete	9300	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CAK-BRTRG1	Diodes Incorporated	Tape & Reel (TR)	Obsolete	3946	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CAK-CPTRG1	Diodes Incorporated	Tape & Reel (TR)	Obsolete	3732	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CK-AHTRG1	Diodes Incorporated	Cut Tape (CT) & Digi-Reel®	Obsolete	14500	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CK-AKTRG1	Diodes Incorporated	Cut Tape (CT)	Obsolete	3820	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CK-ASTRG1	Diodes Incorporated	Cut Tape (CT)	Obsolete	9400	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
AP9101CK-AUTRG1	Diodes Incorporated	Cut Tape (CT)	Obsolete	4300	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3 Compliant
S-8241ABKMC-GBKT2G	ABLIC Inc.	Tape & Reel (TR)	Not For New Designs	5280	Lithium Ion/Polymer	Over Current, Over Voltage	-40°C ~ 85°C	SOT-23-5	ROHS3 Compliant

Engineering Selection Recommendations

For Active Product Status Requirement: AP9101CAK-BUTRG1 is the only part in this list with Active product status. Selection of this part is appropriate for new designs requiring long-term manufacturer support and availability assurance.

For Obsolete Part Substitution: All Diodes Incorporated AP9101 variants (AP9101CAK-ABTRG1, AP9101CAK-AKTRG1, AP9101CAK-ANTRG1, AP9101CAK-BRTRG1, AP9101CAK-CPTRG1, AP9101CK-AHTRG1, AP9101CK-AKTRG1, AP9101CK-ASTRG1, AP9101CK-AUTRG1) are electrically and mechanically equivalent. Selection among these obsolete variants depends on packaging format availability and inventory requirements. All maintain ROHS3 compliance and identical thermal/electrical specifications.

For Cross-Manufacturer Substitution: S-8241ABKMC-GBKT2G from ABLIC Inc. is marked as Not For New Designs. While it maintains identical electrical function, battery chemistry, fault protection, and operating temperature range, it uses SOT-23-5 packaging instead of SOT-25. This package difference requires PCB layout modification and is not a direct mechanical substitute.

Frequently Asked Questions (FAQ)

Q: Can AP9101CAK-ABTRG1 replace AP9101CAK-BUTRG1 in production? A: Yes. Both parts share identical electrical specifications, thermal characteristics, fault protection capabilities, and compliance certifications. The difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and product status (Obsolete versus Active). Packaging format does not affect circuit performance.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging? A: Tape & Reel (TR) is continuous reel packaging for automated pick-and-place assembly. Cut Tape (CT) is pre-cut tape segments for manual or semi-automated handling. Both contain identical components; the difference is delivery and handling format only.

Q: Is S-8241ABKMC-GBKT2G a direct substitute for AP9101CAK-BUTRG1? A: No. While S-8241ABKMC-GBKT2G provides equivalent battery protection function and electrical specifications, it uses SOT-23-5 packaging instead of SOT-25. This package difference requires PCB redesign and is not a direct mechanical substitute. Additionally, it is marked Not For New Designs.

Q: Why are most substitute parts marked Obsolete? A: Product status reflects manufacturer lifecycle designation. Obsolete parts may still be available from inventory but are no longer in active production. AP9101CAK-BUTRG1 (Active status) is the recommended selection for new designs requiring long-term availability.

Q: Do all AP9101 variants have the same pin configuration? A: Yes. All AP9101 variants use SOT-25 packaging with identical pin configuration, electrical function, and thermal characteristics. Variants differ only in packaging delivery format and product lifecycle status.

Q: What does ROHS3 Compliant mean for this component? A: ROHS3 Compliant indicates the part meets Restriction of Hazardous Substances Directive 3 requirements, restricting lead and other hazardous materials. All listed parts maintain this compliance.

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