FT510EB Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The FT510EB is a linear voltage regulator IC from Fremont Micro Devices Ltd, classified as a Power Management (PMIC) component. It delivers a fixed positive output of 2.8V at 250mA in a surface-mount SOT-89-3LA package. The device is currently obsolete, making identification of functionally equivalent substitute parts essential for design continuity and procurement planning. This reference provides engineering-grade alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

FT510EB

Fremont Micro Devices LtdIn Stock: 807FT510EB Datasheet

Current PartRFQ

MCP1700T-2802E/MB

Microchip TechnologyIn Stock: 2259MCP1700T-2802E/MB Datasheet

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S-1206B28-U3T1U

ABLIC Inc.In Stock: 1240S-1206B28-U3T1U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FT510EB are selected based on strict electrical and mechanical compatibility criteria. The following parameters must match or exceed the original specification:

• Fixed output voltage of 2.8V
• Output current capability of 250mA minimum
• Maximum input voltage of 6V or higher
• Surface-mount package TO-243AA (SOT-89-3)
• Operating temperature range of -40°C to 85°C minimum
• Over-current protection

Both identified substitutes meet these core requirements while offering active product status and enhanced protection features in certain cases.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing support, addressing the obsolescence of the FT510EB.

MCP1700T-2802E/MB (Microchip Technology) offers the widest operating temperature range (-40°C to 125°C) and includes over-temperature and short-circuit protection in addition to over-current protection. This part is ROHS3 compliant and provides enhanced reliability features. The higher quiescent current (4 µA versus 1.1 µA) and increased dropout voltage at full load (0.35V @ 250mA) are trade-offs for extended temperature operation and comprehensive protection.

S-1206B28-U3T1U (ABLIC Inc.) maintains the original operating temperature range (-40°C to 85°C) and offers the lowest quiescent current (1.5 µA) among all three parts, closely matching the original FT510EB specification of 1.1 µA. This part is also ROHS3 compliant and provides a higher maximum input voltage rating (6.5V). The dropout voltage at 100mA (0.36V) is comparable to the original specification.

Both substitutes are electrically and mechanically compatible with the FT510EB in TO-243AA surface-mount applications requiring 2.8V, 250mA output.

Frequently Asked Questions (FAQ)

Q: Can MCP1700T-2802E/MB be used as a direct replacement for FT510EB?

A: Yes. Both parts deliver 2.8V at 250mA in identical TO-243AA packages. The MCP1700T-2802E/MB meets all electrical requirements and exceeds the operating temperature range. The higher quiescent current and dropout voltage are within acceptable margins for most applications.

Q: What is the key difference between the two substitute parts?

A: S-1206B28-U3T1U maintains the original operating temperature range and quiescent current profile, making it the closest electrical match. MCP1700T-2802E/MB extends the operating temperature to 125°C and adds over-temperature and short-circuit protection, suitable for demanding thermal environments.

Q: Are both substitutes available in the same package as FT510EB?

A: Yes. All three parts use the TO-243AA surface-mount package (SOT-89-3 or SOT-89-3LA). Pin-to-pin compatibility is maintained across all three devices.

Q: Do the substitute parts have RoHS compliance?

A: Both MCP1700T-2802E/MB and S-1206B28-U3T1U are ROHS3 compliant. The original FT510EB RoHS status is not specified in available documentation.

Q: Which substitute should be selected for low-power applications?

A: S-1206B28-U3T1U offers the lowest quiescent current (1.5 µA) among the substitutes, making it the preferred choice for battery-powered or ultra-low-power designs where standby current is critical.

Q: What is the impact of higher dropout voltage in MCP1700T-2802E/MB?

A: The MCP1700T-2802E/MB exhibits 0.35V dropout at full 250mA load, compared to 0.18V in the original FT510EB. This requires approximately 0.17V additional input voltage headroom. For applications with tight input voltage margins below 3.15V, verify that the input supply can accommodate this difference.