MMBD6100LT3 Equivalent & Substitute Parts

Part Overview

The MMBD6100LT3 is a general-purpose diode array in a 1 Pair Common Cathode configuration rated for 70 V DC reverse voltage and 200 mA average rectified current per diode. The device is packaged in a surface mount TO-236-3 (SOT-23-3) package and features a reverse recovery time of 4 ns with small signal switching characteristics.

The MMBD6100LT3 is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production builds and field replacements. Substitute parts must maintain electrical compatibility within the specified parameter ranges while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Voltage - DC Reverse (Vr) (Max)	70	V
Current - Average Rectified (Io) (per Diode)	200	mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 100 mA	—
Reverse Recovery Time (trr)	4	ns
Current - Reverse Leakage @ Vr	100 nA @ 50 V	—
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitute parts for the MMBD6100LT3 are classified based on electrical parameter compatibility within the following criteria:

Parametric Equivalent Classification: Parts that maintain identical or superior electrical specifications across all critical parameters including reverse voltage rating, average rectified current, forward voltage characteristics, reverse recovery time, and reverse leakage current. These parts are direct functional replacements.

Similar Classification: Parts that maintain the same diode configuration (1 Pair Common Cathode) and package form factor (SOT-23-3) but may have variations in one or more electrical parameters. Substitution requires verification that the application tolerates the parameter deviation.

Critical Parameters for Substitution:

Diode Configuration: 1 Pair Common Cathode (mandatory)
Package / Case: TO-236-3, SC-59, SOT-23-3 (mandatory for mechanical compatibility)
Voltage - DC Reverse (Vr) (Max): Minimum 70 V (equal or higher acceptable)
Current - Average Rectified (Io) (per Diode): Minimum 200 mA (equal or higher acceptable)
Technology: Standard or Schottky (technology change requires application review)
Mounting Type: Surface Mount (mandatory)

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) @ If	trr [ns]	Ir @ Vr	Technology	Product Status	RoHS Status
MMBD6100LT3	onsemi	70	200	1.1 V @ 100 mA	4	100 nA @ 50 V	Standard	Obsolete	Non-compliant
MMBD6100LT1G	onsemi	70	200	1.1 V @ 100 mA	4	100 nA @ 50 V	Standard	Active	ROHS3 Compliant
PMBD6100,215	Nexperia USA Inc.	70	215	1.1 V @ 100 mA	4	100 nA @ 50 V	Standard	Active	ROHS3 Compliant
BAS70-05FILM	STMicroelectronics	70	70	1 V @ 15 mA	—	10 µA @ 70 V	Schottky	Active	ROHS3 Compliant
BAV70-E3-18	Vishay General Semiconductor - Diodes Division	70	125	1 V @ 50 mA	6	2.5 µA @ 70 V	Standard	Active	ROHS3 Compliant
BAV70E6327HTSA1	Infineon Technologies	80	200	1.25 V @ 150 mA	4	150 nA @ 70 V	Standard	Last Time Buy	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: MMBD6100LT1G

The MMBD6100LT1G is the direct parametric equivalent to the MMBD6100LT3. This part maintains identical electrical specifications across all critical parameters: 70 V reverse voltage rating, 200 mA average rectified current, 1.1 V forward voltage at 100 mA, 4 ns reverse recovery time, and 100 nA reverse leakage current at 50 V. The MMBD6100LT1G is manufactured by onsemi in the same SOT-23-3 package and is classified as Active product status with ROHS3 compliance. This part provides direct functional replacement with improved compliance posture compared to the obsolete MMBD6100LT3.

Secondary Recommendation: PMBD6100,215

The PMBD6100,215 manufactured by Nexperia USA Inc. provides parametric equivalence with a higher average rectified current rating of 215 mA per diode, exceeding the 200 mA requirement of the MMBD6100LT3. All other electrical parameters remain identical: 70 V reverse voltage, 1.1 V forward voltage at 100 mA, 4 ns reverse recovery time, and 100 nA reverse leakage current at 50 V. The part is Active status with ROHS3 compliance and packaged in TO-236-3 (SOT-23-3). The higher current rating provides design margin for applications requiring sustained or transient current levels near the 200 mA specification.

Conditional Recommendation: BAV70E6327HTSA1

The BAV70E6327HTSA1 manufactured by Infineon Technologies provides electrical compatibility with an elevated reverse voltage rating of 80 V, exceeding the 70 V specification of the MMBD6100LT3. The part maintains 200 mA average rectified current, 4 ns reverse recovery time, and is packaged in SOT-23-3. Forward voltage is specified at 1.25 V at 150 mA, representing a minor increase from the 1.1 V specification. This part is classified as Last Time Buy status. Selection of this part is appropriate for applications where the higher voltage rating provides design margin, provided that forward voltage characteristics are acceptable to the circuit design.

Not Recommended: BAS70-05FILM

The BAS70-05FILM manufactured by STMicroelectronics employs Schottky diode technology, which differs fundamentally from the Standard technology of the MMBD6100LT3. Additionally, the average rectified current rating of 70 mA is substantially below the 200 mA requirement. This part is suitable only for applications with significantly reduced current requirements and where Schottky characteristics are explicitly required.

Not Recommended: BAV70-E3-18

The BAV70-E3-18 manufactured by Vishay General Semiconductor provides an average rectified current rating of 125 mA, which is insufficient for applications requiring the full 200 mA capability of the MMBD6100LT3. This part is suitable only for applications with reduced current requirements.

Frequently Asked Questions (FAQ)

Q: Can MMBD6100LT1G be used as a direct replacement for MMBD6100LT3?

A: Yes. The MMBD6100LT1G is a parametric equivalent with identical electrical specifications and the same SOT-23-3 package. The primary difference is product status: MMBD6100LT1G is Active with ROHS3 compliance, while MMBD6100LT3 is Obsolete and RoHS non-compliant. No circuit modifications are required.

Q: What is the difference between MMBD6100LT1G and PMBD6100,215?

A: Both parts maintain 70 V reverse voltage and 1.1 V forward voltage characteristics. The PMBD6100,215 has a higher average rectified current rating of 215 mA compared to 200 mA for the MMBD6100LT1G. Both are Active status with ROHS3 compliance. Selection depends on whether the additional current margin is beneficial for the application.

Q: Why is BAS70-05FILM not recommended as a substitute?

A: The BAS70-05FILM uses Schottky diode technology rather than Standard technology, and the average rectified current rating of 70 mA is substantially below the 200 mA requirement of the MMBD6100LT3. This part is not electrically compatible for applications requiring the full current capability.

Q: Can BAV70-E3-18 replace MMBD6100LT3?

A: No. The BAV70-E3-18 has an average rectified current rating of 125 mA, which is insufficient for applications requiring 200 mA per diode. This part is suitable only for applications with reduced current requirements.

Q: What does "1 Pair Common Cathode" configuration mean?

A: This configuration contains two diodes within a single package with a shared cathode terminal. The three leads of the SOT-23-3 package consist of two anodes and one common cathode. This configuration is essential for certain circuit topologies and must be maintained in any substitute part.

Q: Are all substitute parts available in the same SOT-23-3 package?

A: Yes. All recommended and similar parts listed are packaged in TO-236-3, SC-59, or SOT-23-3 designations, which are equivalent package forms. Mechanical compatibility with existing PCB layouts is maintained.

Q: What is the significance of RoHS compliance status?

A: ROHS3 compliance indicates that the part meets current environmental and hazardous substance restrictions. The MMBD6100LT3 is RoHS non-compliant, while MMBD6100LT1G, PMBD6100,215, and BAV70E6327HTSA1 are ROHS3 compliant. For new designs and many manufacturing environments, ROHS3 compliance is mandatory.

Q: What does "Last Time Buy" status mean for BAV70E6327HTSA1?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for this part. While currently available, inventory will be depleted and the part will not be replenished. This part is suitable for immediate requirements but not recommended for long-term production planning.

Q: Can I use BAV70E6327HTSA1 if my application requires exactly 70 V reverse voltage?

A: The BAV70E6327HTSA1 is rated for 80 V reverse voltage, which exceeds the 70 V requirement. This higher rating provides design margin and does not create incompatibility. However, the forward voltage specification of 1.25 V at 150 mA should be verified against circuit requirements, as it is slightly higher than the 1.1 V specification of the MMBD6100LT3.

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