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AP9101CAK-CITRG1 Equivalent & Substitute Parts
Part Overview
The AP9101CAK-CITRG1 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 in Active product status with 852 pieces in stock.
Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when inventory constraints necessitate sourcing from alternative part variants within the same product family.
Substiute Parts
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
Parametric equivalents for the AP9101CAK-CITRG1 are determined by the following criteria:
Core Electrical Parameters (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)
- Package / Case: SC-74A, SOT-753
- Supplier Device Package: SOT-25
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 functionality and mechanical compatibility. Differences in packaging format do not affect circuit performance and are determined by supply chain and manufacturing assembly requirements.
Parameter Comparison
| Part Number | Manufacturer | Packaging | Product Status | Inventory (Pcs) | Function | Battery Chemistry | Cells | Fault Protection | Temp Range | Package | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AP9101CAK-CITRG1 | Diodes Inc. | Tape & Reel (TR) | Active | 852 | 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 |
Engineering Selection Recommendations
All listed AP9101 variants are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The primary distinction between parts is packaging format and product status.
For new designs, AP9101CAK-CITRG1 in Tape & Reel format is the recommended selection due to Active product status and suitability for automated assembly processes.
For legacy designs or when Tape & Reel format is unavailable, AP9101CAK-AKTRG1 and AP9101CK-AHTRG1 offer the highest inventory availability in Cut Tape & Digi-Reel® format. These parts are electrically and mechanically identical to the primary part.
Cut Tape (CT) only variants—AP9101CAK-ANTRG1, AP9101CK-AKTRG1, AP9101CK-ASTRG1, and AP9101CK-AUTRG1—are suitable for manual assembly or low-volume production where reel handling is not required.
All substitute parts maintain identical operating temperature range (-40°C to 85°C), fault protection capabilities, and MSL rating, ensuring direct functional interchangeability in circuit applications.
Frequently Asked Questions (FAQ)
Q: Can I substitute AP9101CAK-CITRG1 with any of the listed AP9101 variants?
A: Yes. All listed parts share identical electrical specifications, battery chemistry support, fault protection features, and operating temperature range. Substitution is valid across all variants regardless of packaging format.
Q: What is the difference between Tape & Reel (TR), Cut Tape (CT), and Cut Tape & Digi-Reel® packaging?
A: Tape & Reel is supplied on continuous reels for high-speed automated assembly. Cut Tape is supplied in strips for manual or semi-automated assembly. Cut Tape & Digi-Reel® combines both formats. All three formats contain electrically identical components; packaging selection depends on assembly equipment and production volume.
Q: Why are some parts marked as Obsolete?
A: Obsolete status indicates the manufacturer has discontinued active production. However, these parts remain functionally equivalent and are available from existing inventory. Obsolete parts are suitable for replacement or legacy system maintenance.
Q: Are all parts ROHS3 compliant?
A: Yes. All listed AP9101 variants are ROHS3 compliant and REACH unaffected, meeting current environmental regulations for new product designs and manufacturing.
Q: Can I use a part with Cut Tape packaging in an automated assembly line designed for Tape & Reel?
A: No. Automated pick-and-place equipment requires Tape & Reel format. For automated assembly, select AP9101CAK-CITRG1, AP9101CAK-BRTRG1, or AP9101CAK-CPTRG1. Manual or semi-automated processes can accommodate Cut Tape or Cut Tape & Digi-Reel® formats.
Q: What is the Moisture Sensitivity Level (MSL) rating?
A: All parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These components do not require special dry-pack storage or handling procedures.
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