CDST-7000-G Equivalent & Substitute Parts Reference

Part Overview

The CDST-7000-G is a general-purpose diode array manufactured by Comchip Technology, configured as 1 pair series connection with 100 V reverse voltage rating and 200 mA average rectified current per diode. The device is packaged in SOT-23-3 (TO-236-3, SC-59) surface mount configuration and maintains active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified to address inventory availability, supply chain continuity, and equivalent electrical performance within the specified parameter ranges for this diode array category.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Series Connection	—
Voltage - DC Reverse (Vr) (Max)	100	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	3 µA @ 100 V	—
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the CDST-7000-G are classified into three categories based on electrical and mechanical compatibility:

Direct Substitutes (Identical Electrical Performance): Parts that match all critical parameters: 100 V reverse voltage, 200 mA average rectified current, SOT-23-3 package, 4 ns reverse recovery time, and 150°C maximum junction temperature. These parts are interchangeable without circuit redesign.

Functional Equivalents (Reduced Current Rating): Parts rated at 100 mA average rectified current with identical voltage, package, and temperature specifications. These are suitable for applications where the circuit current requirement does not exceed 100 mA.

Manufacturer-Recommended Alternatives (Enhanced Performance): Parts rated at 215 mA average rectified current with fast recovery characteristics (≤500 ns, >200 mA Io), automotive-grade qualification (AEC-Q101), and identical voltage and package specifications. These provide higher current capacity and automotive reliability.

Parametric Equivalents (Extended Temperature Range): Parts with identical electrical specifications but extended operating temperature range (-55°C to 150°C) or obsolete status requiring inventory transition planning.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) @ If	trr [ns]	Tj (Max) [°C]	Package	Product Status	Substitution Category
CDST-7000-G	Comchip Technology	100	200	1.1 V @ 100 mA	4	150	SOT-23-3	Active	Reference Part
MMBD7000-G3-18	Vishay General Semiconductor	100	100	1.1 V @ 100 mA	4	150	SOT-23-3	Active	Functional Equivalent
MMBD7000-TP	Micro Commercial Co	100	200	820 mV @ 10 mA	4	150	SOT-23-3	Active	Direct Substitute
BAV99,215	Nexperia USA Inc.	100	215	1.25 V @ 150 mA	4	150	SOT-23-3	Active	MFR Recommended
BAV99,235	Nexperia USA Inc.	100	215	1.25 V @ 150 mA	4	150	SOT-23-3	Active	MFR Recommended
MMBD1203	onsemi	100	200	1.0 V @ 200 mA	4	150	SOT-23-3	Active	MFR Recommended
PMBD7000,215	Nexperia USA Inc.	100	215	1.25 V @ 150 mA	4	150	SOT-23-3	Active	MFR Recommended
PMBD7000,235	NXP USA Inc.	100	215	1.25 V @ 150 mA	4	150	SOT-23-3	Active	MFR Recommended
MMBD7000-E3-08	Vishay General Semiconductor	100	200	1.1 V @ 100 mA	4	150	SOT-23-3	Active	Parametric Equivalent
MMBD7000-E3-18	Vishay General Semiconductor	100	200	1.1 V @ 100 mA	4	150	SOT-23-3	Active	Parametric Equivalent
MMBD7000-HE3-08	Vishay General Semiconductor	100	200	1.1 V @ 100 mA	4	150	SOT-23-3	Obsolete	Parametric Equivalent

Engineering Selection Recommendations

For Direct Replacement (No Circuit Modification Required):

Select MMBD7000-TP (Micro Commercial Co) or MMBD1203 (onsemi) when 200 mA average rectified current and 100 V reverse voltage specifications must be maintained. Both parts are active products with ROHS3 compliance, SOT-23-3 packaging, and identical diode configuration. MMBD1203 offers lower forward voltage (1.0 V @ 200 mA) compared to the reference part (1.1 V @ 100 mA), resulting in reduced power dissipation in high-current applications.

For Enhanced Current Capacity:

Select BAV99,215, BAV99,235, PMBD7000,215, or PMBD7000,235 when circuit design permits higher current handling (215 mA). These parts maintain 100 V reverse voltage and SOT-23-3 packaging. BAV99 series and PMBD7000 series include fast recovery characteristics (≤500 ns, >200 mA Io) and automotive-grade qualification (AEC-Q101), suitable for automotive and industrial applications requiring enhanced reliability.

For Reduced Current Applications:

Select MMBD7000-G3-18 (Vishay) when circuit current requirement does not exceed 100 mA. This part maintains identical voltage, package, temperature, and reverse recovery specifications while offering lower current rating.

For Extended Temperature Range:

Select MMBD7000-E3-08 (Vishay) when operating temperature range must extend to -55°C. This part provides identical electrical specifications to the reference part with extended junction temperature range (-55°C to 150°C).

Avoid Obsolete Parts:

MMBD7000-HE3-08 is marked obsolete. Transition to active alternatives: MMBD7000-E3-18, MMBD7000-E3-08, or MMBD1203 for continued supply chain support.

Frequently Asked Questions (FAQ)

Q: Can MMBD7000-G3-18 replace CDST-7000-G in all applications?

A: MMBD7000-G3-18 is a functional equivalent with reduced current rating (100 mA vs. 200 mA). It is suitable only for applications where circuit current does not exceed 100 mA. Verify circuit current requirements before substitution. All other electrical parameters (voltage, package, temperature, recovery time) are identical.

Q: What is the difference between BAV99,215 and PMBD7000,215?

A: Both parts share identical electrical specifications: 100 V reverse voltage, 215 mA average rectified current, 1.25 V forward voltage @ 150 mA, 4 ns reverse recovery time, and SOT-23-3 packaging. BAV99,215 is manufactured by Nexperia USA Inc. with automotive-grade qualification (AEC-Q101). PMBD7000,215 is manufactured by Nexperia USA Inc. Inventory availability and packaging format (Cut Tape vs. Tape & Reel) differ between variants.

Q: Is MMBD7000-HE3-08 still available for new designs?

A: MMBD7000-HE3-08 is marked obsolete. New designs must transition to active alternatives. MMBD7000-E3-18 and MMBD7000-E3-08 provide identical electrical specifications with active product status. MMBD1203 offers equivalent performance with lower forward voltage characteristics.

Q: What are the packaging differences among substitute parts?

A: All substitute parts use SOT-23-3 (TO-236-3, SC-59) surface mount package. Packaging format differs: CDST-7000-G, MMBD7000-TP, MMBD7000-E3-18, and MMBD7000-HE3-08 are supplied in Tape & Reel (TR). MMBD7000-G3-18, MMBD7000-E3-08, MMBD1203, PMBD7000,215, and BAV99,215 are supplied in Cut Tape (CT) & Digi-Reel® or equivalent. Verify reel format compatibility with assembly equipment before procurement.

Q: Can I use BAV99,235 or PMBD7000,235 in place of CDST-7000-G?

A: Yes. Both parts meet or exceed CDST-7000-G specifications: 100 V reverse voltage, 215 mA average rectified current (exceeds 200 mA requirement), identical SOT-23-3 package, 4 ns reverse recovery time, and 150°C maximum junction temperature. These parts are suitable for direct substitution with improved current margin. Verify packaging format (Tape & Reel vs. Cut Tape) compatibility with assembly process.

Q: What is the significance of reverse recovery time (trr) in diode array selection?

A: Reverse recovery time (trr) of 4 ns is specified for all substitute parts and the reference part. This parameter determines switching speed and is critical for high-frequency rectification and signal switching applications. All listed substitutes maintain identical 4 ns recovery time, ensuring equivalent performance in time-sensitive circuits.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts listed (MMBD7000-TP, MMBD7000-G3-18, BAV99,215, BAV99,235, MMBD1203, PMBD7000,215, PMBD7000,235, MMBD7000-E3-08, MMBD7000-E3-18) are ROHS3 compliant with MSL 1 (Unlimited). MMBD7000-HE3-08 is also ROHS3 compliant but marked obsolete.

Q: Which substitute offers the lowest forward voltage drop?

A: MMBD7000-TP specifies 820 mV @ 10 mA forward voltage, the lowest among listed substitutes. MMBD1203 specifies 1.0 V @ 200 mA. The reference part CDST-7000-G specifies 1.1 V @ 100 mA. Lower forward voltage reduces power dissipation in rectification circuits. Verify forward voltage measurement conditions match circuit operating points before final selection.

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