MMBD1503 Equivalent & Substitute Parts

Part Overview

The MMBD1503 is a general-purpose diode array manufactured by onsemi, configured as 1 pair series connection in a surface mount SOT-23-3 package. This component is rated for 200 V DC reverse voltage and 200 mA average rectified current per diode. The MMBD1503 is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and product status options.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Series Connection	—
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io) (per Diode)	200	mA
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	—
Current - Reverse Leakage @ Vr	10	nA @ 180 V
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Technology	Standard	—
Speed	Small Signal ≤ 200mA (Io), Any Speed	—

Substitute Part Grouping Explanation

Substitute parts for the MMBD1503 are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain all critical electrical specifications: 200 V reverse voltage, 200 mA average rectified current, 1.1 V forward voltage at 200 mA, and 10 nA reverse leakage current at 180 V. These parts are direct functional replacements with identical performance characteristics. Parametric equivalents include MMBD1503A and MMBD1503A-D87Z, both manufactured by onsemi with active product status.

Similar Parts share the same package, mounting type, and diode configuration but differ in one or more electrical parameters. Acceptable parameter variations include:

Reverse voltage rating: 180 V to 240 V (within application tolerance)
Forward voltage: 1.0 V to 1.3 V at specified current
Reverse leakage current: 1 nA to 100 nA at rated voltage
Operating temperature range: Extended lower temperature limits acceptable

Similar parts include CMPD2003S TR TIN/LEAD, CMPD3003S BK PBFREE, CMPD3003S TR PBFREE, GSD2004S-E3-18, and MMBD1503-TP. These parts accommodate applications where exact parameter matching is not required or where enhanced specifications provide additional design margin.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) [V]	Reverse Leakage [nA]	Tj (Max) [°C]	Package	Product Status	RoHS Status
MMBD1503	onsemi	200	200	1.1 @ 200 mA	10 @ 180 V	150	SOT-23-3	Obsolete	—
MMBD1503A	onsemi	200	200	1.1 @ 200 mA	10 @ 180 V	150	SOT-23-3	Active	ROHS3 Compliant
MMBD1503A-D87Z	onsemi	200	200	1.1 @ 200 mA	10 @ 180 V	150	SOT-23-3	Active	ROHS3 Compliant
CMPD2003S TR TIN/LEAD	Central Semiconductor Corp	200	200	1.25 @ 200 mA	100 @ 200 V	150	SOT-23	Active	RoHS non-compliant
CMPD3003S BK PBFREE	Central Semiconductor Corp	180	200	1.1 @ 200 mA	10 @ 180 V	150	SOT-23	Active	ROHS3 Compliant
CMPD3003S TR PBFREE	Central Semiconductor Corp	180	200	1.15 @ 300 mA	1 @ 125 V	150	SOT-23	Active	ROHS3 Compliant
GSD2004S-E3-18	Vishay General Semiconductor - Diodes Division	240	225	1.0 @ 100 mA	100 @ 240 V	150	SOT-23-3	Active	ROHS3 Compliant
MMBD1503-TP	Micro Commercial Co	180	200	1.3 @ 200 mA	10 @ 180 V	150	SOT-23	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: MMBD1503A

MMBD1503A is the preferred substitute for MMBD1503. This part is manufactured by onsemi, the original equipment manufacturer, and maintains identical electrical specifications across all critical parameters: 200 V reverse voltage, 200 mA average rectified current, 1.1 V forward voltage at 200 mA, and 10 nA reverse leakage current. MMBD1503A carries active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Inventory availability is substantial at 380,973 pieces. This part is available in Cut Tape and Digi-Reel packaging formats.

Secondary Recommendation: MMBD1503A-D87Z

MMBD1503A-D87Z provides identical electrical performance to MMBD1503A with the same onsemi manufacturer origin and active product status. This variant is supplied in Strip packaging and maintains ROHS3 compliance. Operating temperature range extends to -55°C, providing enhanced low-temperature performance. Inventory availability is 10,400 pieces.

Alternative Recommendation: GSD2004S-E3-18

GSD2004S-E3-18 manufactured by Vishay General Semiconductor is suitable for applications requiring enhanced voltage and current ratings. This part provides 240 V reverse voltage and 225 mA average rectified current, exceeding MMBD1503 specifications. Forward voltage is 1.0 V at 100 mA, and reverse leakage is 100 nA at 240 V. The part features fast recovery technology with 50 ns reverse recovery time. GSD2004S-E3-18 is active with ROHS3 compliance and 25,200 pieces in inventory. This part is suitable for designs where higher voltage margin is required.

Conditional Alternatives: CMPD3003S Series

CMPD3003S BK PBFREE and CMPD3003S TR PBFREE, both manufactured by Central Semiconductor Corp, are suitable for applications where 180 V reverse voltage is acceptable. Both variants maintain 200 mA average rectified current and 1.1 V forward voltage characteristics. CMPD3003S TR PBFREE offers superior inventory availability at 107,147 pieces with active product status and ROHS3 compliance. These parts are appropriate for cost-sensitive applications or where lower voltage ratings meet circuit requirements.

Not Recommended: CMPD2003S TR TIN/LEAD

CMPD2003S TR TIN/LEAD is RoHS non-compliant and not suitable for applications requiring RoHS compliance. While electrical specifications are compatible, the non-compliant status restricts use in regulated industries and modern supply chains.

Frequently Asked Questions (FAQ)

Q: Can MMBD1503A directly replace MMBD1503 without circuit modification?

A: Yes. MMBD1503A maintains identical electrical specifications: 200 V reverse voltage, 200 mA average rectified current, 1.1 V forward voltage at 200 mA, and 10 nA reverse leakage current. The package, mounting type, and diode configuration are identical. No circuit modification is required.

Q: What is the difference between MMBD1503A and MMBD1503A-D87Z?

A: Both parts are electrically identical with identical specifications. The primary difference is packaging format: MMBD1503A is supplied in Cut Tape and Digi-Reel formats, while MMBD1503A-D87Z is supplied in Strip format. MMBD1503A-D87Z extends the operating temperature range to -55°C, providing enhanced low-temperature performance.

Q: Can GSD2004S-E3-18 replace MMBD1503 in all applications?

A: GSD2004S-E3-18 is electrically compatible for applications where 200 V reverse voltage is the minimum requirement. This part provides 240 V reverse voltage and 225 mA average rectified current, exceeding MMBD1503 specifications. The part features fast recovery technology (50 ns reverse recovery time) compared to standard small signal speed. GSD2004S-E3-18 is suitable for designs requiring enhanced voltage margin or faster switching characteristics.

Q: Are CMPD3003S parts suitable replacements?

A: CMPD3003S BK PBFREE and CMPD3003S TR PBFREE are suitable for applications where 180 V reverse voltage meets circuit requirements. These parts maintain 200 mA average rectified current and 1.1 V forward voltage. Both variants are active with ROHS3 compliance. Selection depends on whether the 20 V reduction in reverse voltage rating is acceptable for the specific application.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active product status indicates ongoing manufacturing and long-term availability. Obsolete status indicates discontinued production. MMBD1503 is obsolete, making substitution necessary for new designs and ongoing production. All recommended substitutes carry active product status, ensuring continued availability and supply chain stability.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Cut Tape, Digi-Reel, Strip, Bulk, Tape & Reel) affects supply chain logistics and handling but does not alter electrical performance. All variants of a given part number maintain identical electrical specifications.

Q: What is RoHS compliance and why does it matter?

A: RoHS (Restriction of Hazardous Substances) compliance restricts the use of specific hazardous materials in electrical and electronic equipment. ROHS3 compliance is required for most regulated industries and modern supply chains. MMBD1503A, MMBD1503A-D87Z, CMPD3003S variants, and GSD2004S-E3-18 are ROHS3 compliant. CMPD2003S TR TIN/LEAD is RoHS non-compliant and not suitable for regulated applications.

Q: What does MSL (Moisture Sensitivity Level) indicate?

A: MSL indicates the component's sensitivity to moisture during storage and handling. MSL 1 (Unlimited) indicates no moisture sensitivity restrictions. All listed parts carry MSL 1 rating, allowing standard storage and handling procedures without special moisture control requirements.

Q: Can I use MMBD1503-TP as a substitute?

A: MMBD1503-TP is suitable for applications where 180 V reverse voltage is acceptable. This part maintains 200 mA average rectified current but specifies 1.3 V forward voltage at 200 mA, which is higher than MMBD1503's 1.1 V specification. MMBD1503-TP is manufactured by Micro Commercial Co with active product status and ROHS3 compliance. Selection depends on whether the higher forward voltage and reduced reverse voltage rating are acceptable for the specific application.

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