AP9101CK-BITRG1 Equivalent & Substitute Parts

Part Overview

The AP9101CK-BITRG1 is a Battery Protection IC for single-cell Lithium Ion/Polymer applications, manufactured by Diodes Incorporated in SOT-25 package. This component provides over-current and over-voltage fault protection for battery management systems. The part is currently in Active product status with 1007 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when inventory from different distribution channels is needed to meet production schedules.

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 for the AP9101CK-BITRG1 is determined by the following criteria:

Primary Substitution Criteria (Must Match):

Manufacturer: Diodes Incorporated
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)

Variable Parameters (Allowed to Differ):

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

All substitute parts listed maintain identical electrical and mechanical specifications while differing only in packaging format and product lifecycle status.

Parameter Comparison

Part Number	Manufacturer	Packaging	Product Status	Inventory (Pcs)	Function	Battery Chemistry	Cells	Fault Protection	Temp Range	Package	RoHS
AP9101CK-BITRG1	Diodes Incorporated	Tape & Reel (TR)	Active	1007	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CAK-ABTRG1	Diodes Incorporated	Cut Tape (CT) & Digi-Reel®	Obsolete	3100	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CAK-AKTRG1	Diodes Incorporated	Cut Tape (CT) & Digi-Reel®	Obsolete	8700	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CAK-ANTRG1	Diodes Incorporated	Cut Tape (CT)	Obsolete	9300	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CAK-BRTRG1	Diodes Incorporated	Tape & Reel (TR)	Obsolete	3946	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CAK-CPTRG1	Diodes Incorporated	Tape & Reel (TR)	Obsolete	3732	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CK-AHTRG1	Diodes Incorporated	Cut Tape (CT) & Digi-Reel®	Obsolete	14500	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CK-AKTRG1	Diodes Incorporated	Cut Tape (CT)	Obsolete	3820	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CK-ASTRG1	Diodes Incorporated	Cut Tape (CT)	Obsolete	9400	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
AP9101CK-AUTRG1	Diodes Incorporated	Cut Tape (CT)	Obsolete	4300	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-25	ROHS3
S-8241ABKMC-GBKT2G	ABLIC Inc.	Tape & Reel (TR)	Not For New Designs	5280	Battery Protection	Lithium Ion/Polymer	1	Over Current, Over Voltage	-40°C ~ 85°C	SOT-23-5	ROHS3

Engineering Selection Recommendations

For Active Production (Recommended): AP9101CK-BITRG1 remains the primary selection as it maintains Active product status with established supply chain support.

For Packaging Format Flexibility: Diodes Incorporated AP9101 series 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 variants depends on manufacturing process requirements:

Tape & Reel (TR) format: AP9101CK-BITRG1 (Active), AP9101CAK-BRTRG1, AP9101CAK-CPTRG1
Cut Tape (CT) & Digi-Reel® format: AP9101CAK-ABTRG1, AP9101CAK-AKTRG1, AP9101CK-AHTRG1
Cut Tape (CT) format: AP9101CAK-ANTRG1, AP9101CK-AKTRG1, AP9101CK-ASTRG1, AP9101CK-AUTRG1

All Diodes Incorporated variants are ROHS3 compliant with MSL 1 rating and identical electrical specifications.

Cross-Manufacturer Alternative: S-8241ABKMC-GBKT2G (ABLIC Inc.) provides functional equivalence with identical battery protection specifications and operating temperature range. However, this part carries "Not For New Designs" status and uses SOT-23-5 package instead of SOT-25, requiring PCB layout modification. This option is suitable only for legacy system maintenance or when Diodes Incorporated variants are unavailable.

Frequently Asked Questions (FAQ)

Q: Can AP9101CK-BITRG1 be replaced with any of the listed Diodes Incorporated variants? A: Yes. All AP9101 series variants from Diodes Incorporated maintain identical electrical and mechanical specifications. Differences are limited to packaging format (Tape & Reel, Cut Tape, or Cut Tape & Digi-Reel®) and product lifecycle status. Selection depends on your manufacturing equipment compatibility and supply chain requirements.

Q: What is the difference between Tape & Reel and Cut Tape packaging? A: Tape & Reel (TR) packaging is supplied on continuous carrier tape suitable for automated pick-and-place equipment with reel handling capability. Cut Tape (CT) is supplied in individual tape segments for manual or semi-automated assembly. Cut Tape & Digi-Reel® combines both formats. Equipment compatibility determines which format is appropriate for your production line.

Q: Why are most substitute parts marked as Obsolete? A: Product lifecycle status reflects manufacturer designation. Obsolete parts may still be available through inventory channels but are no longer in active production. AP9101CK-BITRG1 (Active status) is the recommended choice for new designs. Obsolete variants are suitable for replacement or legacy system support when Active variants are unavailable.

Q: Is S-8241ABKMC-GBKT2G a direct replacement? A: S-8241ABKMC-GBKT2G provides functional equivalence in battery protection specifications and operating temperature range. However, it uses SOT-23-5 package instead of SOT-25, requiring PCB layout modification. This part is designated "Not For New Designs" and should be considered only for legacy system maintenance or when Diodes Incorporated variants are unavailable.

Q: Are all listed parts ROHS3 compliant? A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with modern manufacturing and environmental standards.

Q: What determines whether a part can substitute for AP9101CK-BITRG1? A: Substitution is determined by matching function (Battery Protection), battery chemistry (Lithium Ion/Polymer), cell count (1), fault protection type (Over Current, Over Voltage), operating temperature range (-40°C ~ 85°C), mounting type (Surface Mount), package type (SOT-25), and compliance certifications (ROHS3, REACH Unaffected). Packaging format and product status may vary without affecting electrical compatibility.

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