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DDZ9714-7 Equivalent & Substitute Parts
Part Overview
The DDZ9714-7 is a Zener diode manufactured by Diodes Incorporated, rated at 33 V nominal voltage with 500 mW maximum power dissipation in a surface mount SOD-123 package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter tolerances.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nom) | 33 | V |
| Tolerance | ±5% | — |
| Power - Max | 500 | mW |
| Current - Reverse Leakage @ Vr | 50 nA @ 25 V | — |
| Voltage - Forward (Vf) (Max) @ If | 900 mV @ 10 mA | — |
| Operating Temperature | -65°C ~ 150°C | — |
| Mounting Type | Surface Mount | — |
| Package / Case | SOD-123 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitute parts for the DDZ9714-7 are grouped based on the following critical parameters that determine functional equivalence:
Primary Substitution Criteria:
- Voltage - Zener (Nom): 33 V
- Tolerance: ±5% or tighter
- Power - Max: 500 mW or greater
- Mounting Type: Surface Mount
- Package / Case: SOD-123 or compatible variants
- Operating Temperature Range: Must encompass -65°C to 150°C or equivalent
- RoHS3 Compliance: Required
Secondary Compatibility Factors:
- Forward voltage (Vf) at specified current
- Reverse leakage current characteristics
- Impedance specifications where provided
Parts that meet all primary criteria are classified as direct substitutes. Parts with reduced power ratings (200 mW, 320 mW, 375 mW) or different package variants (SOD-123F, SOD-323) are listed as alternative options with noted parameter differences.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Vz (Nom) | Tolerance | Power (Max) | Package | Operating Temp | RoHS3 |
|---|---|---|---|---|---|---|---|
| DDZ9714-7 | Diodes Incorporated | 33 V | ±5% | 500 mW | SOD-123 | -65°C ~ 150°C | Yes |
| MMSZ5257B-7-F | Diodes Incorporated | 33 V | ±5% | 500 mW | SOD-123 | -65°C ~ 150°C | Yes |
| BZT52C33-TP | Micro Commercial Co | 33 V | ±6% | 200 mW | SOD-123 | -65°C ~ 150°C | Yes |
| BZT52H-B33,115 | NXP USA Inc. | 33 V | ±2% | 375 mW | SOD-123F | -65°C ~ 150°C | — |
| BZT52H-C33,115 | Nexperia USA Inc. | 33 V | ±5% | 375 mW | SOD-123F | -65°C ~ 150°C | Yes |
| CMHZ5257B TR PBFREE | Central Semiconductor Corp | 33 V | ±5% | 500 mW | SOD-123 | -65°C ~ 150°C | Yes |
| MMSZ4714T1G | onsemi | 33 V | ±5% | 500 mW | SOD-123 | -55°C ~ 150°C | Yes |
| MMSZ5257B-TP | Micro Commercial Co | 33 V | ±5% | 500 mW | SOD-123 | -55°C ~ 150°C | Yes |
| MMSZ5257BT1G | onsemi | 33 V | ±5% | 500 mW | SOD-123 | -55°C ~ 150°C | Yes |
| MMSZ5257ET1G | onsemi | 33 V | ±5% | 500 mW | SOD-123 | -55°C ~ 150°C | Yes |
| PZU33BA,115 | Nexperia USA Inc. | 33 V | ±5% | 320 mW | SOD-323 | -55°C ~ 150°C | Yes |
Engineering Selection Recommendations
Full Electrical and Mechanical Equivalents (Direct Substitutes):
The following parts provide complete parameter equivalence to the DDZ9714-7 with identical voltage rating, tolerance, power rating, package type, and operating temperature range:
- MMSZ5257B-7-F (Diodes Incorporated)
- CMHZ5257B TR PBFREE (Central Semiconductor Corp)
These parts are suitable for direct replacement in applications where the full 500 mW power dissipation capability and -65°C lower temperature limit are required.
Functional Equivalents with Reduced Power Rating:
The following parts maintain the 33 V nominal voltage and ±5% tolerance but with reduced maximum power dissipation:
- BZT52C33-TP (Micro Commercial Co): 200 mW rated power
- PZU33BA,115 (Nexperia USA Inc.): 320 mW rated power, SOD-323 package
These parts are suitable for applications where power dissipation does not exceed their rated limits.
Functional Equivalents with Improved Tolerance:
- BZT52H-B33,115 (NXP USA Inc.): ±2% tolerance, 375 mW power, SOD-123F package, AEC-Q101 automotive qualified
- BZT52H-C33,115 (Nexperia USA Inc.): ±5% tolerance, 375 mW power, SOD-123F package, AEC-Q101 automotive qualified
These parts offer tighter voltage tolerance and automotive qualification where applicable.
Functional Equivalents with Reduced Lower Temperature Limit:
The following parts maintain 33 V voltage and 500 mW power rating but with operating temperature range of -55°C to 150°C:
- MMSZ4714T1G (onsemi)
- MMSZ5257B-TP (Micro Commercial Co)
- MMSZ5257BT1G (onsemi)
- MMSZ5257ET1G (onsemi)
These parts are suitable for applications where the -65°C lower temperature limit is not required.
All listed substitute parts maintain RoHS3 compliance and are classified as Active product status.
Frequently Asked Questions (FAQ)
Q: Can MMSZ5257B-7-F be used as a direct replacement for DDZ9714-7?
A: Yes. MMSZ5257B-7-F provides identical electrical specifications (33 V, ±5%, 500 mW) and operates across the same temperature range (-65°C to 150°C) in the same SOD-123 package. Both are RoHS3 compliant.
Q: What is the difference between SOD-123 and SOD-123F packages?
A: SOD-123F is a variant of the SOD-123 package. Parts specified for SOD-123F (such as BZT52H-B33,115 and BZT52H-C33,115) have different mechanical dimensions. Physical compatibility must be verified against PCB footprint specifications before substitution.
Q: Can BZT52C33-TP be used in place of DDZ9714-7?
A: BZT52C33-TP maintains the 33 V nominal voltage and SOD-123 package but is rated for 200 mW maximum power versus 500 mW for the DDZ9714-7. Substitution is valid only if circuit power dissipation does not exceed 200 mW.
Q: What is the significance of the ±2% tolerance on BZT52H-B33,115?
A: The ±2% tolerance on BZT52H-B33,115 provides tighter voltage regulation compared to the ±5% tolerance of DDZ9714-7. This part is suitable for applications requiring improved voltage accuracy. The DDZ9714-7 tolerance of ±5% is adequate for general-purpose applications.
Q: Are the onsemi parts (MMSZ4714T1G, MMSZ5257BT1G, MMSZ5257ET1G) suitable replacements?
A: These onsemi parts provide 33 V, ±5%, 500 mW specifications in SOD-123 packages. The operating temperature range is -55°C to 150°C, which does not include the -65°C lower limit of the DDZ9714-7. Substitution is valid for applications where -55°C minimum temperature is acceptable.
Q: What does RoHS3 compliance indicate?
A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials. All listed substitute parts maintain this compliance status.
Q: Can PZU33BA,115 replace DDZ9714-7 in all applications?
A: PZU33BA,115 differs in three aspects: SOD-323 package (smaller form factor), 320 mW power rating (versus 500 mW), and -55°C minimum operating temperature (versus -65°C). Substitution requires verification of PCB footprint compatibility, power dissipation limits, and temperature requirements.
Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?
A: Tape & Reel (TR) packaging is supplied on continuous reels for automated assembly. Cut Tape (CT) is supplied in shorter tape segments. Both contain identical components; packaging format affects handling and assembly processes only.
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