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PDZ2.7B,115 Zener Diode Equivalent & Substitute Parts
Part Overview
The PDZ2.7B,115 is a 2.7 V Zener diode manufactured by Nexperia USA Inc., rated for 400 mW maximum power dissipation in a surface mount SOD-323 package. This component is classified as Active and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nominal) | 2.7 | V |
| Tolerance | ±2% | — |
| Power - Maximum | 400 | mW |
| Impedance (Maximum) | 100 | Ohms |
| Current - Reverse Leakage @ Vr | 20 | µA @ 1 V |
| Voltage - Forward (Maximum) @ If | 1.1 | V @ 100 mA |
| Operating Temperature | 150 | °C (TJ) |
| Package / Case | SOD-323 | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitute parts for the PDZ2.7B,115 are classified based on the following critical parameters that determine functional equivalence:
Primary Equivalence Criteria:
- Zener voltage: 2.7 V nominal
- Package type: SOD-323 surface mount
- Mounting compatibility: Surface mount technology
- Regulatory compliance: ROHS3 compliant
Secondary Compatibility Factors:
- Power rating: 400 mW or greater
- Voltage tolerance: ±2% or tighter
- Impedance: 100 Ohms maximum
- Reverse leakage current: 20 µA @ 1 V or lower
Parts meeting all primary criteria are classified as parametric equivalents. Parts meeting primary criteria with variations in secondary parameters are classified as similar alternatives with noted deviations.
Parameter Comparison
| Parameter | PDZ2.7B,115 | PDZ2.7B,135 | MM3Z2V7T1G |
|---|---|---|---|
| Manufacturer | Nexperia USA Inc. | Nexperia USA Inc. | onsemi |
| Voltage - Zener (Nom) | 2.7 V | 2.7 V | 2.7 V |
| Tolerance | ±2% | ±2% | ±7% |
| Power - Max | 400 mW | 400 mW | 300 mW |
| Impedance (Max) | 100 Ohms | 100 Ohms | 100 Ohms |
| Current - Reverse Leakage @ Vr | 20 µA @ 1 V | 20 µA @ 1 V | 20 µA @ 1 V |
| Voltage - Forward (Max) @ If | 1.1 V @ 100 mA | 1.1 V @ 100 mA | 900 mV @ 10 mA |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | -65°C ~ 150°C |
| Package / Case | SOD-323 | SOD-323 | SOD-323 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
PDZ2.7B,135 (Nexperia USA Inc.)
The PDZ2.7B,135 is a parametric equivalent to the PDZ2.7B,115. Both parts share identical electrical specifications including 2.7 V nominal zener voltage, ±2% tolerance, 400 mW power rating, and SOD-323 package. Both are ROHS3 compliant with MSL 1 rating and REACH unaffected status. This part is suitable for direct substitution in applications where the PDZ2.7B,115 is specified.
MM3Z2V7T1G (onsemi)
The MM3Z2V7T1G is a similar alternative with the following deviations from the PDZ2.7B,115 specification:
- Voltage tolerance: ±7% (versus ±2%)
- Power rating: 300 mW (versus 400 mW)
- Operating temperature range: -65°C to 150°C (versus 150°C maximum)
- Forward voltage: 900 mV @ 10 mA (versus 1.1 V @ 100 mA)
This part maintains the 2.7 V nominal zener voltage, SOD-323 package, and ROHS3 compliance. Selection of this part requires confirmation that the reduced power rating and wider voltage tolerance are acceptable for the application circuit.
Frequently Asked Questions (FAQ)
Q: Can PDZ2.7B,135 be used as a direct replacement for PDZ2.7B,115?
A: Yes. The PDZ2.7B,135 is a parametric equivalent with identical electrical specifications and package type. Both parts are manufactured by Nexperia USA Inc. and share the same base product number PDZ2.7.
Q: What are the limitations of using MM3Z2V7T1G as a substitute?
A: The MM3Z2V7T1G has a reduced maximum power rating of 300 mW compared to 400 mW for the PDZ2.7B,115. Additionally, the voltage tolerance is ±7% versus ±2%, resulting in a wider zener voltage variation. Applications requiring the full 400 mW power dissipation capability or tighter voltage regulation should not use this part.
Q: Are all three parts compatible with the same PCB footprint?
A: Yes. All three parts use the SOD-323 package and are surface mount components. PCB footprints designed for SOD-323 accommodate all three parts without modification.
Q: Do all substitute parts meet the same regulatory requirements?
A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating. All are classified as Active products.
Q: What is the difference between PDZ2.7B,115 and PDZ2.7B,135 packaging designations?
A: Both parts are supplied in Tape & Reel (TR) packaging. The numerical suffix (115 versus 135) indicates different tape reel configurations or manufacturing lot designations but does not affect electrical performance or compatibility.
Q: Can MM3Z2V7T1G be used in high-power applications?
A: No. The MM3Z2V7T1G is rated for 300 mW maximum power dissipation. Applications requiring sustained power dissipation above 300 mW require the PDZ2.7B,115 or PDZ2.7B,135, both rated for 400 mW.
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