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BZX79-B30,133 Equivalent & Substitute Parts
Part Overview
The BZX79-B30,133 is an active zener diode manufactured by Nexperia USA Inc., designed for voltage regulation and protection applications. This through-hole component operates at a nominal zener voltage of 30 V with 400 mW power dissipation capability. The part is packaged in DO-204AH (DO-35) axial configuration and is ROHS3 compliant. Substitute parts are identified to provide design flexibility when the primary part number becomes unavailable or when inventory constraints require alternative sourcing options.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nom) | 30 | V |
| Tolerance | ±2% | — |
| Power - Max | 400 | mW |
| Impedance (Max) | 80 | Ohms |
| Current - Reverse Leakage @ Vr | 50 | nA @ 21 V |
| Voltage - Forward (Vf) (Max) @ If | 900 | mV @ 10 mA |
| Operating Temperature Range | -65 to 200 | °C |
| Mounting Type | Through Hole | — |
| Package / Case | DO-204AH, DO-35, Axial | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of zener diodes is determined by electrical and mechanical parameter equivalence. The BZX79-B30,133 qualifies for substitution with parts that maintain identical specifications across the following critical parameters:
- Nominal zener voltage: 30 V
- Voltage tolerance: ±2%
- Maximum power dissipation: 400 mW
- Maximum impedance: 80 Ohms
- Reverse leakage current: 50 nA @ 21 V
- Forward voltage: 900 mV @ 10 mA
- Operating temperature range: -65°C to 200°C
- Package configuration: DO-204AH (DO-35) axial through-hole
- Compliance certifications: ROHS3, REACH Unaffected
Parts meeting all these parameters are electrically and mechanically interchangeable and can be used as direct substitutes in circuit applications.
Parameter Comparison
| Parameter | BZX79-B30,133 | BZX79-B30,143 | Match |
|---|---|---|---|
| Manufacturer | Nexperia USA Inc. | Nexperia USA Inc. | Yes |
| Category | Diodes, Zener | Diodes, Zener | Yes |
| Voltage - Zener (Nom) | 30 V | 30 V | Yes |
| Tolerance | ±2% | ±2% | Yes |
| Power - Max | 400 mW | 400 mW | Yes |
| Impedance (Max) | 80 Ohms | 80 Ohms | Yes |
| Current - Reverse Leakage @ Vr | 50 nA @ 21 V | 50 nA @ 21 V | Yes |
| Voltage - Forward (Vf) (Max) @ If | 900 mV @ 10 mA | 900 mV @ 10 mA | Yes |
| Operating Temperature | -65°C ~ 200°C | -65°C ~ 200°C | Yes |
| Mounting Type | Through Hole | Through Hole | Yes |
| Package / Case | DO-204AH, DO-35, Axial | DO-204AH, DO-35, Axial | Yes |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Yes |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Yes |
| REACH Status | REACH Unaffected | REACH Unaffected | Yes |
| Product Status | Active | Active | Yes |
Engineering Selection Recommendations
Both the BZX79-B30,133 and BZX79-B30,143 are active products manufactured by Nexperia USA Inc. and carry identical electrical and mechanical specifications. Selection between these part numbers is based on inventory availability and supply chain considerations rather than technical performance differences.
The BZX79-B30,133 maintains 10,642 pieces in current stock inventory. The BZX79-B30,143 maintains 6,057 pieces in current stock inventory. Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for industrial and commercial applications.
For applications requiring 30 V zener regulation at 400 mW power dissipation in through-hole axial configuration, either part number provides equivalent performance and can be selected based on procurement lead time and inventory status.
Frequently Asked Questions (FAQ)
Q: Are BZX79-B30,133 and BZX79-B30,143 electrically identical?
A: Yes. Both parts share identical electrical specifications including 30 V nominal zener voltage, ±2% tolerance, 400 mW maximum power dissipation, 80 Ohms maximum impedance, and identical forward and reverse leakage characteristics.
Q: Can these parts be used interchangeably in circuit designs?
A: Yes. The parts are mechanically and electrically interchangeable. Both use DO-204AH (DO-35) axial through-hole packaging and can be substituted without circuit modification.
Q: What is the difference between BZX79-B30,133 and BZX79-B30,143?
A: The part numbers differ only in their supplier device package designation suffix. All electrical performance, thermal characteristics, and compliance certifications are identical.
Q: Are both parts RoHS compliant?
A: Yes. Both BZX79-B30,133 and BZX79-B30,143 are ROHS3 compliant and REACH unaffected.
Q: What is the operating temperature range for these zener diodes?
A: Both parts operate across -65°C to 200°C, providing performance across industrial and extended temperature applications.
Q: Can these parts be used in high-temperature applications?
A: Yes. The 200°C maximum operating temperature rating supports high-temperature circuit environments within the specified power and voltage parameters.
Q: What is the moisture sensitivity level for these components?
A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.
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