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INA203AIPWR Equivalent & Substitute Parts
Part Overview
The INA203AIPWR is a high-side current monitor IC manufactured by Texas Instruments, designed for power management applications. This Surface Mount device operates across an input voltage range of -16V to 80V with ±4.6% accuracy and delivers a 1mA output signal. The part is Active status and RoHS3 compliant, making it suitable for industrial and commercial power monitoring circuits. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the INA20x series.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | INA203AIPWR |
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Function | Current Monitor |
| Sensing Method | High-Side |
| Accuracy | ±4.6% |
| Voltage - Input | -16V ~ 80V |
| Current - Output | 1mA |
| Operating Temperature | -40°C ~ 125°C |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts for the INA203AIPWR are qualified based on the following criteria:
Electrical Equivalence: All substitute parts maintain identical specifications for sensing method (High-Side), accuracy (±4.6%), input voltage range (-16V ~ 80V), output current (1mA), and operating temperature range (-40°C ~ 125°C).
Mechanical Compatibility: All substitute parts use the same 14-TSSOP package with 0.173" width (4.40mm), ensuring pin-for-pin compatibility and identical PCB footprints.
Compliance & Status: All parts are Active status, RoHS3 compliant, and carry identical MSL ratings (2, 1 Year).
Qualifying Substitutes: INA203AQPWRQ1, INA205AIPWR, INA207AIPWR, INA208AIPWR
Parameter Comparison
| Part Number | Manufacturer | Function | Sensing Method | Accuracy | Input Voltage | Output Current | Operating Temp | Package | Status | RoHS | Grade |
|---|---|---|---|---|---|---|---|---|---|---|---|
| INA203AIPWR | Texas Instruments | Current Monitor | High-Side | ±4.6% | -16V ~ 80V | 1mA | -40°C ~ 125°C | 14-TSSOP | Active | ROHS3 | Standard |
| INA203AQPWRQ1 | Texas Instruments | Current Monitor | High-Side | ±4.6% | -16V ~ 80V | 1mA | -40°C ~ 125°C | 14-TSSOP | Active | ROHS3 | Automotive (AEC-Q100) |
| INA205AIPWR | Texas Instruments | Current Monitor | High-Side | ±4.6% | -16V ~ 80V | 1mA | -40°C ~ 125°C | 14-TSSOP | Active | ROHS3 | Standard |
| INA207AIPWR | Texas Instruments | Current Monitor | High-Side | ±4.6% | -16V ~ 80V | 1mA | -40°C ~ 125°C | 14-TSSOP | Active | ROHS3 | Standard |
| INA208AIPWR | Texas Instruments | Current Monitor | High-Side | ±4.6% | -16V ~ 80V | 1mA | -40°C ~ 125°C | 14-TSSOP | Active | ROHS3 | Standard |
Engineering Selection Recommendations
All listed substitute parts are Active status components from Texas Instruments with full RoHS3 compliance. The INA203AQPWRQ1 variant carries automotive-grade qualification (AEC-Q100), making it suitable for applications requiring automotive reliability standards. The standard-grade substitutes (INA205AIPWR, INA207AIPWR, INA208AIPWR) are appropriate for general industrial and commercial power management circuits. Selection between these parts depends on application requirements and supply chain availability, as all maintain identical electrical and mechanical specifications.
Frequently Asked Questions (FAQ)
Q: Can INA205AIPWR, INA207AIPWR, and INA208AIPWR be used interchangeably with INA203AIPWR?
A: Yes. All parts share identical electrical specifications (±4.6% accuracy, -16V to 80V input, 1mA output, -40°C to 125°C operating range) and the same 14-TSSOP package footprint. They are pin-for-pin compatible.
Q: What is the difference between INA203AIPWR and INA203AQPWRQ1?
A: Both parts are electrically and mechanically identical. The INA203AQPWRQ1 carries automotive-grade qualification (AEC-Q100) and uses Cut Tape & Digi-Reel packaging, while the standard INA203AIPWR uses Tape & Reel packaging. Select INA203AQPWRQ1 for automotive applications requiring AEC-Q100 compliance.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts (INA203AQPWRQ1, INA205AIPWR, INA207AIPWR, INA208AIPWR) are RoHS3 compliant with MSL rating of 2 (1 Year).
Q: Do these parts require different PCB layouts?
A: No. All substitute parts use the 14-TSSOP package with identical pin spacing and dimensions (0.173" width, 4.40mm). Existing PCB designs require no modification.
Q: What determines substitution eligibility for INA203AIPWR?
A: Substitution is based on matching high-side sensing method, ±4.6% accuracy, -16V to 80V input voltage range, 1mA output current, -40°C to 125°C operating temperature, and 14-TSSOP package compatibility. All listed parts meet these criteria.
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