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BZX84J-C11,115 Equivalent & Substitute Parts
Part Overview
The BZX84J-C11,115 is a Zener diode manufactured by Nexperia USA Inc., rated at 11 V nominal with 550 mW maximum power dissipation in a surface mount SOD-323F package. This component is classified as an automotive-grade device with AEC-Q101 qualification and maintains active product status. The device operates across a temperature range of -65°C to 150°C with ±5% voltage tolerance.
Equivalent and substitute parts are identified to address inventory availability, lead time constraints, or specific application requirements while maintaining electrical and mechanical compatibility within defined parameter ranges.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nom) | 11 | V |
| Tolerance | ±5% | — |
| Power - Max | 550 | mW |
| Impedance (Max) | 10 | Ohms |
| Current - Reverse Leakage @ Vr | 100 | nA @ 8 V |
| Voltage - Forward (Vf) (Max) @ If | 1.1 | V @ 100 mA |
| Operating Temperature | -65 to 150 | °C |
| Package / Case | SOD-323F | — |
| Mounting Type | Surface Mount | — |
| Grade | Automotive | — |
| Qualification | AEC-Q101 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitute parts for the BZX84J-C11,115 are classified based on the following electrical and mechanical criteria:
Primary Substitution Criteria:
- Zener voltage: 11 V nominal
- Voltage tolerance: ±2% to ±5%
- Power rating: 100 mW to 550 mW
- Impedance (Max): 10 to 22 Ohms
- Reverse leakage current: 50 nA to 2 µA @ specified voltage
- Forward voltage: 900 mV to 1.2 V
- Operating temperature range: -65°C to 150°C (minimum)
- Surface mount configuration
- RoHS3 compliance
- Automotive or general-purpose grade
Package Compatibility: Substitutes are available in SOD-323F (SC-90), SOD-323 (SC-76), and SOD-523 (SC-79) packages. Package selection depends on circuit board layout and thermal management requirements.
Parametric Equivalence Levels:
- Parametric Equivalent: Identical electrical specifications with tighter tolerance (±2%)
- Similar - Higher Power Rating: Maintains 11 V zener voltage with increased power dissipation capability
- Similar - Lower Power Rating: Maintains 11 V zener voltage with reduced power dissipation for lower-current applications
- Similar - Alternative Package: Maintains electrical specifications in alternative surface mount packages
Parameter Comparison
| Part Number | Manufacturer | Vz (V) | Tolerance | Power (mW) | Zzt (Ohms) | Vf @ If | Package | Temp Range (°C) | Grade |
|---|---|---|---|---|---|---|---|---|---|
| BZX84J-C11,115 | Nexperia USA Inc. | 11 | ±5% | 550 | 10 | 1.1 V @ 100 mA | SOD-323F | -65 to 150 | Automotive |
| BZX84J-B11,115 | Nexperia USA Inc. | 11 | ±2% | 550 | 10 | 1.1 V @ 100 mA | SOD-323F | -65 to 150 | Automotive |
| D3Z11BF-7 | Diodes Incorporated | 11 | ±2% | 400 | 10 | 1.1 V @ 100 mA | SOD-323F | -65 to 150 | General Purpose |
| MM3Z11VB | Fairchild Semiconductor | 11 | ±2% | 200 | 18 | 1 V @ 10 mA | SOD-323F | -65 to 150 | General Purpose |
| MM3Z11VC | onsemi | 11 | ±5% | 200 | 18 | 1 V @ 10 mA | SOD-323F | -65 to 150 | General Purpose |
| BZT52C11S-TP | Micro Commercial Co | 11 | ±5% | 200 | 20 | 900 mV @ 10 mA | SOD-323 | -65 to 150 | General Purpose |
| BZT52C11T-7 | Diodes Incorporated | 11 | ±5% | 300 | 20 | 900 mV @ 10 mA | SOD-523 | -65 to 150 | General Purpose |
| BZT52C11T-TP | Micro Commercial Co | 11 | ±5% | 100 | 20 | 900 mV @ 10 mA | SOD-523 | -65 to 150 | General Purpose |
| DDZ9698T-7 | Diodes Incorporated | 11 | ±5% | 150 | — | 900 mV @ 10 mA | SOD-523 | -65 to 150 | General Purpose |
| MMXZ5241B-TP | Micro Commercial Co | 11 | ±5% | 200 | 22 | 1.2 V @ 100 mA | SOD-323 | -55 to 150 | General Purpose |
Engineering Selection Recommendations
Parametric Equivalent Selection:
The BZX84J-B11,115 (Nexperia USA Inc.) is a parametric equivalent offering identical electrical performance with improved voltage tolerance (±2% versus ±5%). Both devices maintain automotive-grade classification with AEC-Q101 qualification, identical power rating (550 mW), and SOD-323F packaging. Selection of this part is appropriate when tighter voltage tolerance is required without design modification.
Direct Functional Substitutes (SOD-323F Package):
The D3Z11BF-7 (Diodes Incorporated) provides equivalent electrical performance in the same SOD-323F package with reduced power rating (400 mW). This device is suitable for applications where the full 550 mW capability is not required. The ±2% tolerance provides improved voltage accuracy compared to the original specification.
The MM3Z11VB (Fairchild Semiconductor) and MM3Z11VC (onsemi) maintain the SOD-323F package with 200 mW power rating. These devices are appropriate for low-power applications and offer high inventory availability. The MM3Z11VB provides ±2% tolerance, while MM3Z11VC maintains ±5% tolerance matching the original specification.
Alternative Package Substitutes (SOD-323 and SOD-523):
The BZT52C11S-TP, BZT52C11T-7, BZT52C11T-TP, and DDZ9698T-7 provide 11 V zener functionality in alternative surface mount packages (SOD-323 and SOD-523). These devices are suitable when circuit board layout accommodates different package geometries. Power ratings range from 100 mW to 300 mW, requiring evaluation against application current requirements.
The MMXZ5241B-TP (Micro Commercial Co) operates with a reduced minimum temperature range (-55°C versus -65°C), which may limit suitability for applications requiring full -65°C operation.
Compliance and Certification:
All listed substitutes maintain RoHS3 compliance and REACH unaffected status. Automotive-grade applications should prioritize BZX84J-B11,115 or D3Z11BF-7 to maintain AEC-Q101 qualification. General-purpose applications may utilize any listed substitute based on power and package requirements.
Frequently Asked Questions (FAQ)
Q: Can BZX84J-B11,115 replace BZX84J-C11,115 in all applications?
A: Yes. The BZX84J-B11,115 is a parametric equivalent with identical electrical specifications except for improved voltage tolerance (±2% versus ±5%). Both devices share the same 11 V nominal zener voltage, 550 mW power rating, SOD-323F package, and automotive-grade qualification. The tighter tolerance of the B-grade variant provides enhanced voltage accuracy without requiring circuit modifications.
Q: What is the difference between SOD-323F, SOD-323, and SOD-523 packages?
A: These designations refer to different surface mount package geometries. SOD-323F (SC-90) and SOD-323 (SC-76) are similar small-outline diode packages with different lead configurations. SOD-523 (SC-79) is a smaller package variant. Package selection depends on circuit board layout, available footprint space, and thermal management requirements. Substitution between packages requires verification of board-level compatibility.
Q: Can I use a 200 mW zener diode (MM3Z11VB or BZT52C11S-TP) in place of the 550 mW BZX84J-C11,115?
A: Substitution is possible only if the application current does not exceed the 200 mW power rating. The 11 V zener voltage and electrical characteristics remain identical. If the circuit requires continuous power dissipation exceeding 200 mW, the lower-rated device will exceed its thermal limits and fail. Verify application current requirements before selecting a lower-power substitute.
Q: Are all listed substitutes RoHS3 compliant?
A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH unaffected status, matching the environmental compliance of the original BZX84J-C11,115.
Q: Which substitute offers the best inventory availability?
A: The MM3Z11VB (Fairchild Semiconductor) provides the highest inventory availability at 429,770 pieces in stock. This device maintains the SOD-323F package and ±2% voltage tolerance with 200 mW power rating, suitable for applications not requiring the full 550 mW capability.
Q: Can I use MMXZ5241B-TP in automotive applications requiring -65°C operation?
A: No. The MMXZ5241B-TP operates from -55°C to 150°C, which does not meet the -65°C minimum temperature requirement of the original specification. For automotive applications requiring full temperature range operation, select BZX84J-B11,115 or D3Z11BF-7, both of which maintain -65°C to 150°C operation.
Q: What is the significance of impedance (Zzt) differences between substitutes?
A: Impedance (Zzt) represents the dynamic impedance of the zener diode at the specified test current. Lower impedance values (10 Ohms) provide better voltage regulation with varying load current. Higher impedance values (18-22 Ohms) result in greater voltage variation across the operating current range. For precision voltage regulation applications, select substitutes with impedance matching or lower than the original specification.
Q: Are there any temperature range limitations I should consider?
A: All listed substitutes operate across the -65°C to 150°C range except MMXZ5241B-TP, which operates from -55°C to 150°C. For applications requiring full automotive temperature range operation, exclude MMXZ5241B-TP from consideration. All other substitutes maintain compatibility with the original -65°C to 150°C specification.
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