DDZ9682-7 Equivalent & Substitute Parts

Part Overview

The DDZ9682-7 is a Zener diode manufactured by Diodes Incorporated, rated at 2.7 V nominal with 500 mW power dissipation in a surface mount SOD-123 package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). The part is used in voltage regulation and protection circuits where precise 2.7 V reference voltage is required. Equivalent and substitute parts are identified based on matching electrical specifications and package compatibility to support design flexibility, inventory optimization, and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	2.7	V
Tolerance	±5%	—
Power - Max	500	mW
Current - Reverse Leakage @ Vr	1	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—
RoHS Status	ROHS3 Compliant	—
MSL	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the DDZ9682-7 are grouped based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Voltage - Zener (Nom): 2.7 V
Tolerance: ±5% or tighter
Power - Max: 500 mW (or higher)
Mounting Type: Surface Mount
Package / Case: SOD-123 or SOD-123F
Operating Temperature Range: Minimum -55°C to +150°C (or wider)
RoHS3 Compliance: Required

Secondary Considerations:

Current - Reverse Leakage @ Vr: Specified at 1 V
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA or lower
Impedance (Max) (Zzt): Where specified

Substitutes are classified into two categories: Direct Equivalents (matching all primary criteria) and Functional Alternatives (meeting core electrical requirements with minor parameter variations). Parts with reduced power ratings (200 mW) or tighter tolerances (±2%, ±7%) are identified as functional alternatives suitable for specific application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Ir @ 1V (µA)	Vf @ 10mA (mV)	Temp Range (°C)	Package	RoHS3
DDZ9682-7	Diodes Incorporated	2.7	±5%	500	1	900	-65 to 150	SOD-123	Yes
MMSZ5223B-7-F	Diodes Incorporated	2.7	±5%	500	75	900	-65 to 150	SOD-123	Yes
MMSZ4682-E3-08	Vishay General Semiconductor	2.7	±5%	500	1	—	-55 to 150	SOD-123	Yes
BZT52C2V7-TP	Micro Commercial Co	2.7	±7%	200	20	900	-65 to 150	SOD-123	Yes
BZT52H-B2V7,115	NXP USA Inc.	2.7	±2%	375	20	900	-65 to 150	SOD-123F	—
BZT52H-C2V7,115	Nexperia USA Inc.	2.7	±5%	375	20	900	-65 to 150	SOD-123F	Yes
CMHZ5223B TR PBFREE	Central Semiconductor Corp	2.7	±5%	500	75	900	-65 to 150	SOD-123	Yes
MMSZ2V7T1G	onsemi	2.7	±5%	500	20	900	-55 to 150	SOD-123	Yes
MMSZ4682-TP	Micro Commercial Co	2.7	±5%	500	1	950	-55 to 150	SOD-123	Yes
MMSZ4682T1G	onsemi	2.7	±5%	500	1	900	-55 to 150	SOD-123	Yes
MMSZ5223B-TP	Micro Commercial Co	2.7	±5%	500	75	900	-55 to 150	SOD-123	Yes

Engineering Selection Recommendations

Direct Equivalents (Highest Compatibility):

The following parts provide direct functional equivalence to the DDZ9682-7 with matching 2.7 V nominal voltage, ±5% tolerance, 500 mW power rating, and SOD-123 package:

MMSZ4682-E3-08 (Vishay General Semiconductor): Matches all primary electrical specifications. Operating temperature range -55°C to 150°C is narrower than the main part. RoHS3 compliant. Suitable for applications not requiring the extended -65°C lower limit.
MMSZ4682-TP (Micro Commercial Co): Matches all primary electrical specifications with 500 mW power and ±5% tolerance. Forward voltage specification is 950 mV @ 10 mA (50 mV higher than main part). Operating temperature -55°C to 150°C. RoHS3 compliant.
MMSZ4682T1G (onsemi): Matches all primary electrical specifications including 1 µA reverse leakage and 900 mV forward voltage. Operating temperature -55°C to 150°C. RoHS3 compliant. Highest inventory availability (125,200 pcs).
MMSZ5223B-7-F (Diodes Incorporated): Matches voltage, tolerance, power, and package. Reverse leakage is 75 µA @ 1 V (higher than main part). Operating temperature -65°C to 150°C matches main part. RoHS3 compliant.
CMHZ5223B TR PBFREE (Central Semiconductor Corp): Matches voltage, tolerance, power, and package. Reverse leakage is 75 µA @ 1 V. Operating temperature -65°C to 150°C. RoHS3 compliant. Cut Tape packaging.
MMSZ5223B-TP (Micro Commercial Co): Matches voltage, tolerance, power, and package. Reverse leakage is 75 µA @ 1 V. Operating temperature -55°C to 150°C. RoHS3 compliant.
MMSZ2V7T1G (onsemi): Matches voltage, tolerance, and power. Reverse leakage is 20 µA @ 1 V. Operating temperature -55°C to 150°C. RoHS3 compliant. Cut Tape & Digi-Reel packaging.

Functional Alternatives (Conditional Suitability):

BZT52H-C2V7,115 (Nexperia USA Inc.): Matches 2.7 V voltage and ±5% tolerance. Power rating is 375 mW (lower than 500 mW main part). Package is SOD-123F (variant of SOD-123). Operating temperature -65°C to 150°C. RoHS3 compliant. AEC-Q101 automotive qualified. Suitable for applications with lower power dissipation requirements.
BZT52H-B2V7,115 (NXP USA Inc.): Matches 2.7 V voltage. Tolerance is ±2% (tighter than ±5%). Power rating is 375 mW. Package is SOD-123F. Operating temperature -65°C to 150°C. AEC-Q101 automotive qualified. Suitable for precision voltage reference applications with lower power requirements.
BZT52C2V7-TP (Micro Commercial Co): Matches 2.7 V voltage. Tolerance is ±7% (looser than ±5%). Power rating is 200 mW (significantly lower). Package is SOD-123. Operating temperature -65°C to 150°C. RoHS3 compliant. Suitable only for low-power applications where 200 mW dissipation is sufficient.

Selection Criteria Summary:

For applications requiring the full 500 mW power rating and ±5% tolerance in SOD-123 package, select from the direct equivalents. For applications with extended temperature range requirement (-65°C lower limit), prioritize MMSZ4682-E3-08, MMSZ5223B-7-F, CMHZ5223B TR PBFREE, or BZT52H variants. For high-volume applications, MMSZ4682T1G offers the largest inventory. For automotive applications, BZT52H series provides AEC-Q101 qualification.

Frequently Asked Questions (FAQ)

Q: Can MMSZ4682T1G be used as a direct replacement for DDZ9682-7?

A: Yes. MMSZ4682T1G matches the critical specifications: 2.7 V nominal voltage, ±5% tolerance, 500 mW power rating, SOD-123 package, and RoHS3 compliance. The operating temperature range is -55°C to 150°C, which is narrower than the main part's -65°C to 150°C. This substitution is valid for applications not requiring operation below -55°C.

Q: What is the difference between SOD-123 and SOD-123F packages?

A: Both are surface mount packages for small signal diodes. SOD-123F is a variant with different lead geometry. Parts specified as SOD-123F (such as BZT52H series) may require PCB layout adjustments. Verify footprint compatibility before substitution.

Q: Why do some substitute parts have higher reverse leakage current (75 µA vs. 1 µA)?

A: Reverse leakage current is a parameter that varies by manufacturer and device series. Parts with 75 µA reverse leakage (MMSZ5223B series, CMHZ5223B) are functionally equivalent for most applications. Higher reverse leakage affects circuit performance only in applications with extremely high impedance paths or precision analog circuits. Verify application requirements before selecting parts with different leakage specifications.

Q: Can BZT52C2V7-TP be used instead of DDZ9682-7?

A: BZT52C2V7-TP is a functional alternative with limitations. It provides the same 2.7 V voltage and SOD-123 package, but the power rating is 200 mW (versus 500 mW for the main part) and tolerance is ±7% (versus ±5%). This part is suitable only for applications where power dissipation does not exceed 200 mW and the ±7% tolerance is acceptable.

Q: Which substitute part has the best availability?

A: MMSZ4682T1G (onsemi) has the highest inventory with 125,200 pcs in stock. This part matches all primary electrical specifications of the DDZ9682-7 and is suitable for high-volume production requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Most substitute parts listed are RoHS3 compliant. BZT52H-B2V7,115 (NXP USA Inc.) does not specify RoHS3 status in the provided data. Verify RoHS compliance status with the manufacturer if regulatory compliance is required for your application.

Q: What is the significance of AEC-Q101 qualification on BZT52H series?

A: AEC-Q101 is an automotive industry qualification standard. BZT52H-B2V7,115 and BZT52H-C2V7,115 carry this qualification, indicating they meet automotive reliability and quality standards. These parts are suitable for automotive applications where such qualification is required.

Q: Can I substitute a part with a narrower operating temperature range?

A: Substitution with a narrower temperature range is valid only if your application operates within that narrower range. For example, MMSZ4682T1G operates from -55°C to 150°C, which is acceptable for applications not requiring operation below -55°C. Verify your application's temperature requirements before selecting such parts.

Q: What does MSL 1 (Unlimited) mean?

A: MSL (Moisture Sensitivity Level) 1 indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. All parts listed have MSL 1, so no special moisture precautions are necessary.

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