AP9101CAK-BITRG1 Equivalent & Substitute Parts

Part Overview

The AP9101CAK-BITRG1 is a battery protection IC for single-cell lithium-ion/polymer applications, manufactured by Diodes Incorporated. This Surface Mount device in SOT-25 packaging provides over-current and over-voltage fault protection. The part is currently Active in product status with 963 units in stock.

Substitute parts are necessary when the primary part reaches end-of-life, inventory constraints occur, or alternative packaging formats are required for manufacturing flexibility. All substitute parts listed maintain identical electrical and mechanical specifications while differing in packaging configuration or 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	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-25
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility for the AP9101CAK-BITRG1 is determined by the following criteria:

Mandatory Matching Parameters:

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

Variable Parameters (Allowed to Differ):

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

All listed substitute parts maintain identical electrical performance and physical form factor. Packaging differences affect only supply chain logistics and reel configuration, not functional compatibility.

Parameter Comparison

Part Number	Manufacturer	Packaging	Product Status	Inventory (Pcs)	Function	Battery Chemistry	Cells	Fault Protection	Temp Range	Package	RoHS
AP9101CAK-BITRG1	Diodes Inc.	Tape & Reel (TR)	Active	963	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CAK-ABTRG1	Diodes Inc.	Cut Tape & Digi-Reel®	Obsolete	3100	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CAK-AKTRG1	Diodes Inc.	Cut Tape & Digi-Reel®	Obsolete	8700	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CAK-ANTRG1	Diodes Inc.	Cut Tape (CT)	Obsolete	9300	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CAK-BRTRG1	Diodes Inc.	Tape & Reel (TR)	Obsolete	3946	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CAK-CPTRG1	Diodes Inc.	Tape & Reel (TR)	Obsolete	3732	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CK-AHTRG1	Diodes Inc.	Cut Tape & Digi-Reel®	Obsolete	14500	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CK-AKTRG1	Diodes Inc.	Cut Tape (CT)	Obsolete	3820	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CK-ASTRG1	Diodes Inc.	Cut Tape (CT)	Obsolete	9400	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
AP9101CK-AUTRG1	Diodes Inc.	Cut Tape (CT)	Obsolete	4300	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-25	ROHS3
S-8241ABKMC-GBKT2G	ABLIC Inc.	Tape & Reel (TR)	Not For New Designs	5280	Battery Protection	Li-Ion/Polymer	1	OC, OV	-40~85°C	SOT-23-5	ROHS3

Engineering Selection Recommendations

Diodes Incorporated AP9101 Series (Preferred for New Designs): All Diodes Incorporated AP9101 variants maintain identical electrical specifications and are functionally interchangeable. Selection between variants depends on packaging requirements and inventory availability:

AP9101CAK-BITRG1: Active status, Tape & Reel format. Suitable for high-volume automated assembly.
AP9101CAK-BRTRG1, AP9101CAK-CPTRG1: Tape & Reel format, Obsolete status. Available inventory for legacy support.
AP9101CAK-ABTRG1, AP9101CAK-AKTRG1, AP9101CK-AHTRG1: Cut Tape & Digi-Reel® format, Obsolete status. Suitable for lower-volume or manual assembly processes.
AP9101CAK-ANTRG1, AP9101CK-AKTRG1, AP9101CK-ASTRG1, AP9101CK-AUTRG1: Cut Tape format, Obsolete status. Suitable for manual pick-and-place operations.

ABLIC Inc. S-8241ABKMC-GBKT2G (Cross-Manufacturer Alternative): This part maintains identical electrical function and operating parameters but uses SOT-23-5 packaging instead of SOT-25. Product status is "Not For New Designs," indicating end-of-life trajectory. Use only when SOT-23-5 package compatibility is required and Diodes Incorporated variants are unavailable. ROHS3 compliance and MSL rating are equivalent.

Frequently Asked Questions (FAQ)

Q: Can I substitute AP9101CAK-BITRG1 with any of the listed Diodes Incorporated variants?

A: Yes. All AP9101 variants from Diodes Incorporated are electrically and mechanically equivalent. Differences exist only in packaging format (Tape & Reel, Cut Tape, or Cut Tape & Digi-Reel®) and product status. Selection depends on assembly equipment compatibility and inventory availability.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous reels suitable for high-speed automated pick-and-place machines. Cut Tape (CT) and Cut Tape & Digi-Reel® formats provide components in smaller quantities on tape segments, suitable for manual assembly or lower-volume production. Electrical performance is identical.

Q: Can I use the ABLIC S-8241ABKMC-GBKT2G as a direct replacement?

A: The S-8241ABKMC-GBKT2G provides identical battery protection function and operating specifications but uses SOT-23-5 packaging instead of SOT-25. Direct PCB substitution requires package footprint compatibility. This part is marked "Not For New Designs" and should be used only when SOT-23-5 compatibility is required and Diodes Incorporated variants are unavailable.

Q: Why are most substitute parts marked as Obsolete?

A: Obsolete status indicates these parts are no longer in active production but remain available from existing inventory. The AP9101CAK-BITRG1 (Active status) is the current production variant and is recommended for new designs. Obsolete variants are suitable for legacy system support or when specific packaging formats are required.

Q: Are all listed parts ROHS3 compliant?

A: Yes. All parts listed, including the ABLIC variant, are ROHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity level). All are REACH Unaffected and classified under ECCN EAR99 and HTSUS 8542.39.0001.

Q: What determines whether a part can substitute for the AP9101CAK-BITRG1?

A: Substitution is determined by matching function (Battery Protection), battery chemistry (Lithium Ion/Polymer), cell count (1), fault protection type (Over Current and Over Voltage), operating temperature range (-40°C to 85°C), mounting type (Surface Mount), and package form factor (SOT-25). Packaging configuration and product status may vary without affecting functional compatibility.

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