MMBD4148 Equivalent & Substitute Parts Reference

Part Overview

The MMBD4148 from Taiwan Semiconductor Corporation is a surface-mount switching diode in the category of Diodes, Rectifiers. It features a maximum DC reverse voltage of 75 V, an average rectified current of 200mA, and is housed in a SOT-23 package. This part is active and widely used in small signal switching applications. Identifying compatible substitute parts is essential for ensuring consistent supply, supporting production continuity, and facilitating second-source approvals.

Key Parameters

Parameter	MMBD4148
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	75 V
Current - Average Rectified (Io)	200mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 10 mA
Reverse Recovery Time (trr)	4 ns
Current - Reverse Leakage @ Vr	5 µA @ 75 V
Capacitance @ Vr, F	4pF @ 0V, 1MHz
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Supplier Device Package	SOT-23
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
Part Status	Active

Substitute Part Grouping Explanation

Substitute parts for MMBD4148 are determined by matching the following key parameters relevant to the Diodes, Rectifiers category: Voltage - DC Reverse (Vr) (Max), Current - Average Rectified (Io), Voltage - Forward (Vf) (Max) @ If, Reverse Recovery Time (trr), Current - Reverse Leakage @ Vr, Capacitance @ Vr, F, Surface Mount capability, matching Package / Case (TO-236-3, SC-59, SOT-23-3), and identical or overlapping Operating Temperature - Junction range. All substitutes listed maintain RoHS and REACH compliance. Substitute parts included here strictly match these defined parameters.

Parameter Comparison

Parameter	MMBD4148	SBAS116LT1G
Category	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	75 V	75 V
Current - Average Rectified (Io)	200mA	200mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 10 mA	1.25 V @ 150 mA
Reverse Recovery Time (trr)	4 ns	3 µs
Current - Reverse Leakage @ Vr	5 µA @ 75 V	5 nA @ 75 V
Capacitance @ Vr, F	4pF @ 0V, 1MHz	2pF @ 0V, 1MHz
Mounting Type	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Supplier Device Package	SOT-23	SOT-23-3 (TO-236)
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Part Status	Active	Active

Engineering Selection Recommendations

Both MMBD4148 and SBAS116LT1G are active status diodes, with ROHS3 compliance and unaffected REACH status. Their matching package/case and operating temperature ranges support direct substitution where required. When selecting substitutes, verify only product status and supplied environmental certifications as outlined.

Frequently Asked Questions (FAQ)

Q1: What critical parameters determine if SBAS116LT1G can substitute for MMBD4148?
A1: Key parameters include voltage - DC reverse (Vr) (Max), current - average rectified (Io), package/case compatibility (TO-236-3, SC-59, SOT-23-3), mounting type, and operating temperature range.

Q2: Are there any compliance differences among these substitute parts?
A2: Both MMBD4148 and SBAS116LT1G are ROHS3 compliant and REACH unaffected.

Q3: Is package type consistent between MMBD4148 and SBAS116LT1G?
A3: Yes. Both are available in compatible surface-mount SOT-23 style packages.

Q4: Is any special consideration needed for inventory or product status?
A4: No. Both MMBD4148 and SBAS116LT1G are listed as active and readily available.

Q5: Are the substitute parts suitable for use in the same operating temperature range as MMBD4148?
A5: Yes. Both parts have an operating temperature - junction of -55°C ~ 150°C.

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