DS1812-15 Equivalent & Substitute Parts

Part Overview

The DS1812-15 is a single-channel supervisor IC from Analog Devices Inc./Maxim Integrated, part of the EconoReset series. This power management PMIC functions as a simple reset/power-on reset device with push-pull totem pole output configuration. The main part (DS1812-15) carries an obsolete product status, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Key Parameters

Parameter	Value
Voltage Threshold	4.13V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active High
Reset Timeout	100ms Minimum
Operating Temperature Range	-40°C ~ 85°C (TA)
Mounting Type	Through Hole
Package	TO-92-3 (TO-226AA)
Monitored Voltages	1 Channel

Substitute Part Grouping Explanation

Substitution eligibility for the DS1812-15 is determined by strict alignment with the following electrical and mechanical parameters:

Voltage Threshold: Must match 4.13V for direct pin-compatible replacement
Output Configuration: Must be Push-Pull, Totem Pole topology
Reset Logic: Must be Active High
Reset Timeout: Minimum 100ms required
Operating Temperature: Must support -40°C ~ 85°C range
Package: Must be TO-92-3 (TO-226AA) through-hole configuration
Monitored Channels: Single channel requirement

Direct substitutes (DS1812-15+ and DS1812-15+T&R) are identical Analog Devices parts differing only in packaging format (Bulk vs. Tape & Reel). The Microchip MCP101-450DI/TO is a manufacturer-recommended alternative that maintains electrical compatibility within acceptable tolerances for the supervisor function.

Parameter Comparison

Parameter	DS1812-15	DS1812-15+	DS1812-15+T&R	MCP101-450DI/TO
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Microchip Technology
Voltage Threshold	4.13V	4.13V	4.13V	4.375V
Output Configuration	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Reset Logic	Active High	Active High	Active High	Active High
Reset Timeout	100ms Minimum	100ms Minimum	100ms Minimum	150ms Minimum
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package	TO-92-3	TO-92-3	TO-92-3	TO-92-3
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS Non-Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (DS1812-15+ and DS1812-15+T&R): These parts are functionally identical to the main part with identical electrical specifications. Both carry active product status and ROHS3 compliance. Selection between these two depends on procurement requirements: DS1812-15+ for bulk quantities and DS1812-15+T&R for automated assembly processes requiring tape and reel packaging.

Manufacturer-Recommended Alternative (MCP101-450DI/TO): The Microchip MCP101-450DI/TO is suitable for applications where the voltage threshold tolerance of 4.375V (versus 4.13V) and extended reset timeout of 150ms (versus 100ms minimum) are acceptable. This part maintains all other electrical and mechanical compatibility parameters. Selection of this alternative requires verification that the higher threshold voltage and longer timeout do not impact system requirements.

All substitute options provide ROHS3 compliance and active product status, eliminating obsolescence risk associated with the original DS1812-15.

Frequently Asked Questions (FAQ)

Q: Can DS1812-15+ be used as a direct replacement for DS1812-15? A: Yes. DS1812-15+ is electrically and mechanically identical to DS1812-15, differing only in packaging format (Bulk vs. original packaging). Both maintain the same voltage threshold (4.13V), output configuration, reset logic, and TO-92-3 package.

Q: What is the difference between DS1812-15+ and DS1812-15+T&R? A: Both parts are electrically identical. DS1812-15+ is supplied in Bulk packaging, while DS1812-15+T&R is supplied in Tape & Reel format. Selection depends on assembly method: Bulk for manual or small-batch assembly, Tape & Reel for automated pick-and-place equipment.

Q: Can MCP101-450DI/TO replace DS1812-15 in all applications? A: MCP101-450DI/TO maintains electrical compatibility for the supervisor function but differs in two parameters: voltage threshold (4.375V vs. 4.13V) and reset timeout (150ms vs. 100ms minimum). Substitution is valid only when these parameter differences do not conflict with system design requirements.

Q: Are all substitute parts RoHS compliant? A: Yes. DS1812-15+ and DS1812-15+T&R are ROHS3 compliant. MCP101-450DI/TO is also ROHS3 compliant. The original DS1812-15 is RoHS non-compliant.

Q: What is the significance of product status (Obsolete vs. Active)? A: Obsolete status indicates the manufacturer no longer produces the part and may discontinue support. Active status confirms ongoing production and availability. For new designs and long-term production, active-status substitutes are recommended to avoid future supply chain disruption.

Q: Are the TO-92-3 packages of all parts identical? A: Yes. All parts use TO-92-3 (TO-226AA) through-hole package configuration, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

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