MMBD452LT1 Equivalent & Substitute Parts

Part Overview

The MMBD452LT1 is a dual Schottky diode in SOT-23 packaging rated for 30V operation. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The MMBD452LT1G serves as the direct functional equivalent, offering identical electrical specifications with active product status and improved compliance certifications.

Key Parameters

Parameter	Value
Diode Type	Schottky - 1 Pair Series Connection
Peak Reverse Voltage (Max)	30V
Power Dissipation (Max)	225 mW
Package / Case	SOT-23-3 (TO-236)
Operating Temperature Range	-55°C to 125°C
Capacitance @ Vr	1.5 pF @ 15V, 1 MHz
Manufacturer	onsemi

Substitute Part Grouping Explanation

The MMBD452LT1G qualifies as a direct substitute based on the following matching parameters:

Diode configuration: Schottky - 1 Pair Series Connection
Peak reverse voltage rating: 30V
Power dissipation capability: 225 mW
Package type: SOT-23-3 (TO-236)
Operating temperature range: -55°C to 125°C
Capacitance specification: 1.5 pF @ 15V, 1 MHz
Manufacturer: onsemi (same source)

These parameters define the functional and physical compatibility requirements for substitution in applications originally designed for the MMBD452LT1.

Parameter Comparison

Parameter	MMBD452LT1	MMBD452LT1G
Diode Type	Schottky - 1 Pair Series Connection	Schottky - 1 Pair Series Connection
Peak Reverse Voltage (Max)	30V	30V
Power Dissipation (Max)	225 mW	225 mW
Package / Case	SOT-23-3 (TO-236)	SOT-23-3 (TO-236)
Operating Temperature Range	-55°C to 125°C	-55°C to 125°C
Capacitance @ Vr, F	Not specified	1.5 pF @ 15V, 1 MHz
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging Format	Not specified	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

The MMBD452LT1G is the appropriate selection for applications requiring the MMBD452LT1 specification. Key factors supporting this substitution:

Electrical parameters are identical across all critical ratings
Package compatibility is confirmed (SOT-23-3)
Active product status ensures long-term availability
ROHS3 compliance provides regulatory advantage over the non-compliant original part
REACH unaffected status maintained
Same manufacturer (onsemi) ensures design continuity

Frequently Asked Questions (FAQ)

Q: Can MMBD452LT1G be used as a direct replacement for MMBD452LT1?

A: Yes. Both parts share identical electrical specifications including 30V peak reverse voltage, 225 mW power dissipation, and SOT-23-3 packaging. The MMBD452LT1G is the active equivalent.

Q: What is the primary reason to substitute MMBD452LT1?

A: The MMBD452LT1 is classified as obsolete. The MMBD452LT1G provides the same functionality with active product status and improved RoHS compliance.

Q: Are the packages physically identical?

A: Yes. Both use SOT-23-3 (TO-236) packaging, ensuring PCB footprint compatibility without layout modifications.

Q: What compliance advantages does the substitute offer?

A: The MMBD452LT1G is ROHS3 compliant, whereas the original MMBD452LT1 is RoHS non-compliant. Both maintain REACH unaffected status.

Q: Is there any difference in thermal or electrical performance?

A: No. Operating temperature range (-55°C to 125°C) and all electrical parameters remain identical between the two parts.

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