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MCP4651T-104E/ST Equivalent & Substitute Parts
Part Overview
The MCP4651T-104E/ST is a digital potentiometer manufactured by Microchip Technology, classified as a Data Acquisition component. This integrated circuit provides a 100k Ohm 2-circuit digitally controlled potentiometer with 257 taps and I2C interface capability. The device is currently in active product status with 3323 units available in stock. Alternative part numbers are necessary to accommodate different packaging requirements, supply chain availability, and procurement specifications while maintaining identical electrical and mechanical functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance (Ohms) | 100k |
| Number of Circuits | 2 |
| Number of Taps | 257 |
| Interface | I2C |
| Voltage Supply Range | 1.8V ~ 5.5V |
| Operating Temperature Range | -40°C ~ 125°C |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Memory Type | Volatile |
| Tolerance | ±20% |
Substitute Part Grouping Explanation
Substitution eligibility for the MCP4651T-104E/ST is determined by strict equivalence across the following critical parameters:
- Resistance value: 100k Ohm (exact match required)
- Circuit configuration: 2 circuits (exact match required)
- Tap count: 257 taps (exact match required)
- Interface protocol: I2C (exact match required)
- Supply voltage range: 1.8V ~ 5.5V (exact match required)
- Operating temperature range: -40°C ~ 125°C (exact match required)
- Package type: 14-TSSOP (exact match required)
- Mounting method: Surface Mount (exact match required)
The substitute part MCP4651-104E/ST meets all electrical and mechanical equivalence criteria. The primary distinction between the main part and substitute is the packaging format: the main part is supplied in Tape & Reel (TR) configuration, while the substitute is supplied in Tube packaging. Both parts share identical base product designation (MCP4651) and are manufactured by Microchip Technology.
Parameter Comparison
| Parameter | MCP4651T-104E/ST (Main) | MCP4651-104E/ST (Substitute) |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Resistance (Ohms) | 100k | 100k |
| Number of Circuits | 2 | 2 |
| Number of Taps | 257 | 257 |
| Interface | I2C | I2C |
| Voltage - Supply | 1.8V ~ 5.5V | 1.8V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Memory Type | Volatile | Volatile |
| Tolerance | ±20% | ±20% |
| Temperature Coefficient (Typ) | 150ppm/°C | 150ppm/°C |
| Resistance - Wiper (Ohms) (Typ) | 75 | 75 |
| Features | Mute, Selectable Address | Mute, Selectable Address |
| Product Status | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Packaging Format | Tape & Reel (TR) | Tube |
| Inventory | 3323 Pcs New Original In Stock | 2100 Pcs New Original In Stock |
Engineering Selection Recommendations
Both MCP4651T-104E/ST and MCP4651-104E/ST are active products manufactured by Microchip Technology with identical electrical specifications and compliance certifications. Selection between these parts should be based on packaging requirements and supply chain logistics:
- MCP4651T-104E/ST: Select when Tape & Reel packaging is required for automated assembly processes or high-volume production environments.
- MCP4651-104E/ST: Select when Tube packaging is acceptable or preferred for lower-volume applications, manual assembly, or specific procurement workflows.
Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.
Frequently Asked Questions (FAQ)
Q: Are MCP4651T-104E/ST and MCP4651-104E/ST electrically identical?
A: Yes. Both parts are functionally equivalent with identical resistance values (100k Ohm), circuit configuration (2 circuits), tap count (257), I2C interface, supply voltage range (1.8V ~ 5.5V), and operating temperature range (-40°C ~ 125°C).
Q: What is the difference between these two part numbers?
A: The primary difference is packaging format. MCP4651T-104E/ST is supplied in Tape & Reel configuration, while MCP4651-104E/ST is supplied in Tube packaging. All electrical and mechanical specifications remain identical.
Q: Can I substitute MCP4651-104E/ST for MCP4651T-104E/ST in my design?
A: Yes, provided your assembly process and procurement specifications accommodate Tube packaging instead of Tape & Reel. The electrical performance and pinout are identical.
Q: Are there any compliance or certification differences?
A: No. Both parts carry identical RoHS3 compliance, REACH unaffected status, and MSL 1 rating.
Q: What is the 14-TSSOP package specification?
A: 14-TSSOP is a 14-pin Thin Shrink Small Outline Package with 0.173 inches (4.40mm) width. Both parts use this identical surface-mount package.
Q: Does packaging format affect the component's electrical characteristics?
A: No. Packaging format (Tape & Reel versus Tube) affects only handling, storage, and assembly logistics. Electrical specifications remain unchanged.
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