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BZX84-B13,235 Equivalent & Substitute Parts
Part Overview
The BZX84-B13,235 is an automotive-grade Zener diode manufactured by Nexperia USA Inc., rated for 13 V nominal Zener voltage with 250 mW maximum power dissipation. The device is packaged in TO-236AB (SOT-23-3) surface mount configuration and qualifies to AEC-Q101 automotive standards. This part is currently in active production status with 10,455 units in stock.
Equivalent and substitute parts are identified when design requirements permit tolerance variations, power rating adjustments, or alternative qualified manufacturers while maintaining core electrical functionality at 13 V Zener voltage and compatible surface mount packaging.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nom) | 13 | V |
| Tolerance | ±2% | — |
| Power - Max | 250 | mW |
| Impedance (Max) | 30 | Ohms |
| Current - Reverse Leakage @ Vr | 100 | nA @ 8 V |
| Voltage - Forward (Vf) (Max) @ If | 900 | mV @ 10 mA |
| Operating Temperature | -65 to 150 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | — |
| Grade | Automotive | — |
| Qualification | AEC-Q101 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution logic for the BZX84-B13,235 is based on the following criteria:
Parametric Equivalents maintain identical or tighter tolerance specifications, matching power rating, and automotive qualification. These parts are direct functional replacements with no design circuit modifications required.
Similar Parts share the same 13 V Zener voltage and compatible surface mount packaging but differ in one or more of the following parameters: tolerance specification, maximum power rating, or operating temperature range. Similar parts require design review to confirm circuit compatibility before implementation.
Critical Parameters for Substitution:
- Voltage - Zener (Nom): Must equal 13 V
- Mounting Type: Must be Surface Mount
- Package / Case: Must be compatible with TO-236-3, SC-59, or SOT-23-3
- Impedance (Max): Must not exceed 30 Ohms
- Current - Reverse Leakage @ Vr: Must not exceed 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If: Must not exceed 900 mV @ 10 mA
Parameter Comparison
| Part Number | Manufacturer | Vz (Nom) | Tolerance | Power (Max) | Zzt (Max) | Vf (Max) @ If | Temp Range | Grade | AEC-Q101 | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|
| BZX84-B13,235 | Nexperia USA Inc. | 13 V | ±2% | 250 mW | 30 Ω | 900 mV @ 10 mA | -65 to 150°C | Automotive | Yes | TR |
| BZX84-A13,215 | Nexperia USA Inc. | 13 V | ±1% | 250 mW | 30 Ω | 900 mV @ 10 mA | -65 to 150°C | Automotive | Yes | TR |
| BZX84-B13,215 | NXP Semiconductors | 13 V | ±2% | 250 mW | 30 Ω | 900 mV @ 10 mA | -65 to 150°C | Automotive | Yes | Bulk |
| BZX84C13-7-F | Diodes Incorporated | 13 V | ±6% | 300 mW | 30 Ω | 900 mV @ 10 mA | -65 to 150°C | Automotive | Yes | CT |
| BZX84C13-TP | Micro Commercial Co | 13 V | ±5% | 350 mW | 30 Ω | 900 mV @ 10 mA | -55 to 150°C | — | — | TR |
| BZX84C13LT1G | onsemi | 13 V | ±6% | 225 mW | 30 Ω | 900 mV @ 10 mA | -65 to 150°C | — | — | TR |
| SZBZX84C13LT1G | onsemi | 13 V | ±6% | 225 mW | 30 Ω | 900 mV @ 10 mA | -65 to 150°C | Automotive | Yes | TR |
Engineering Selection Recommendations
Parametric Equivalents (Direct Replacement):
BZX84-A13,215 and BZX84-B13,215 are parametric equivalents suitable for direct substitution. BZX84-A13,215 offers tighter tolerance (±1% versus ±2%), providing improved voltage regulation accuracy. BZX84-B13,215 maintains identical electrical specifications and is available in higher inventory volume (243,477 units). Both parts retain automotive grade classification and AEC-Q101 qualification. Packaging differences (Tape & Reel versus Bulk) do not affect electrical performance.
Similar Parts (Design Review Required):
BZX84C13-7-F (Diodes Incorporated) provides 300 mW power rating with ±6% tolerance and maintains AEC-Q101 qualification. This part is suitable for applications requiring higher power dissipation margin.
BZX84C13-TP (Micro Commercial Co) offers 350 mW power rating with ±5% tolerance but lacks documented automotive grade and AEC-Q101 qualification. Operating temperature minimum is -55°C versus -65°C. This part is suitable only for non-automotive applications or where the reduced temperature range is acceptable.
BZX84C13LT1G and SZBZX84C13LT1G (onsemi) both provide 225 mW power rating with ±6% tolerance. SZBZX84C13LT1G carries automotive grade and AEC-Q101 qualification, making it suitable for automotive applications. BZX84C13LT1G lacks automotive qualification and is suitable for commercial applications only. Both parts have lower power rating than the main part and require circuit verification for adequate thermal margin.
Frequently Asked Questions (FAQ)
Q: Can BZX84-A13,215 replace BZX84-B13,235 in all applications?
A: Yes. BZX84-A13,215 is a parametric equivalent with tighter tolerance (±1% versus ±2%), identical power rating, and matching automotive qualification. The improved tolerance provides better voltage regulation accuracy.
Q: What is the difference between Tape & Reel and Bulk packaging?
A: Tape & Reel (TR) packaging is supplied on continuous tape for automated assembly. Bulk packaging is supplied loose. Both formats contain identical components with no electrical performance difference. Selection depends on manufacturing process requirements.
Q: Can BZX84C13-7-F be used instead of BZX84-B13,235?
A: BZX84C13-7-F is a similar part with higher power rating (300 mW versus 250 mW) and wider tolerance (±6% versus ±2%). It maintains AEC-Q101 qualification and compatible operating temperature range. Circuit design review is required to confirm tolerance and power rating compatibility.
Q: Why does BZX84C13LT1G have lower power rating?
A: BZX84C13LT1G is rated for 225 mW maximum power dissipation compared to 250 mW for BZX84-B13,235. This part is suitable only for applications where circuit power dissipation does not exceed 225 mW. Thermal analysis is required before substitution.
Q: Is SZBZX84C13LT1G suitable for automotive applications?
A: Yes. SZBZX84C13LT1G carries automotive grade classification and AEC-Q101 qualification, matching the main part's automotive requirements. However, the 225 mW power rating is lower than the main part's 250 mW rating, requiring circuit verification.
Q: What does ±6% tolerance mean for Zener voltage?
A: ±6% tolerance on 13 V Zener voltage means the actual Zener voltage will fall between 12.22 V and 13.78 V. This is wider than the main part's ±2% tolerance (12.74 V to 13.26 V). Applications requiring tighter voltage regulation should use parts with ±1% or ±2% tolerance.
Q: Can BZX84C13-TP be used in automotive applications?
A: BZX84C13-TP lacks documented automotive grade and AEC-Q101 qualification. It is not suitable for automotive applications. The operating temperature minimum is also -55°C versus -65°C for the main part. This part is suitable for commercial applications only.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts are RoHS3 compliant, matching the main part's environmental compliance status.
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