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Nexperia USA Inc. BZX84J-B33,115
- Part No.:
- BZX84J-B33,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-B33,115.pdf
- Description:
- DIODE ZENER 33V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:7,245
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Product details
Overview
BZX84J-B33,115 from Nexperia is a 33 V ±2 % tolerance Zener diode in SOD323F (SC-90) package, rated for 550 mW total power dissipation and 40 W non-repetitive peak reverse power at 100 µs pulse width, used for precision voltage regulation and overvoltage protection in automotive and industrial power rails.
For engineers reviewing the BZX84J-B33,115 datasheet, BZX84J-B33,115 pinout, BZX84J-B33,115 application, or BZX84J-B33,115 equivalent, this device supports stable reference generation under transient surge conditions, offers low differential resistance (60 Ω at IZ = 2 mA), and meets AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 33 V reference across load variations, with temperature coefficient of +10.4 mV/K at IZ = 2 mA and typical reverse current <0.05 µA at VR = 27 V. Its junction-to-ambient thermal resistance is 230 K/W on FR4 PCB.
The device features low capacitance (60 pF at 0 V, 1 MHz), fast transient response due to short pulse handling capability (tp ≤ 100 µs), and cathode-anode polarity clearly marked by a bar on the SOD323F body - enabling unambiguous orientation in compact SMT layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 33 V ±2 % at IZ = 2 mA - ensures tight regulation tolerance for reference-sensitive circuits |
| Total Power Dissipation | 550 mW at Tamb ≤ 25 °C - defines continuous DC or low-duty-cycle operation limit on standard FR4 |
| Non-repetitive Peak Reverse Power | 40 W at tp = 100 µs - supports ESD/surge clamping without degradation in automotive transients |
| Differential Resistance | 60 Ω at IZ = 2 mA - determines output impedance and regulation error under load current variation |
| Reverse Current | <0.05 µA at VR = 27 V - guarantees minimal leakage in high-impedance bias networks |
| Diode Capacitance | 60 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent designs |
| Temperature Coefficient | +10.4 mV/K at IZ = 2 mA - quantifies voltage drift per degree Celsius in thermally varying environments |
Pinout & Package
SOD323F (SC-90) surface-mount plastic package: 2.3 mm × 1.35 mm × 0.95 mm body, 0.65 mm lead pitch, cathode marked by bar on terminal 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS power domains |
| Low differential resistance | 60 Ω at 2 mA - improves load regulation accuracy in precision feedback loops |
| Stable temperature coefficient | +10.4 mV/K - enables predictable drift compensation in wide-temperature-range designs |
| Small SOD323F footprint | 2.3 mm × 1.35 mm - supports high-density layout in space-constrained modules like ECUs and sensors |
| Pulsed surge capability | 40 W at 100 µs - provides robust transient immunity without external TVS stacking |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Stabilizing 33 V reference for ADC biasing and sensor excitation in engine management systems operating from 12 V/24 V battery rails. IC Role / Device Role / Timing Role: Zener voltage regulator providing fixed reference point for analog front-end circuitry. Use Value: ±2 % tolerance and AEC-Q101 qualification ensure consistent measurement accuracy across -40 °C to +125 °C ambient range. |
Use Scenario: Clamping input transients on 0–10 V analog channels in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Overvoltage protector limiting signal path voltage to safe levels during induced spikes. Use Value: 40 W non-repetitive peak power rating absorbs 100 µs surges without failure, eliminating need for larger TVS devices. |
| Medical Infusion Pump Power Monitoring | Telecom Base Station Bias Supply |
Use Scenario: Regulating auxiliary 33 V rail for microcontroller and display backlight drivers in battery-powered infusion pumps. IC Role / Device Role / Timing Role: Precision voltage reference maintaining stable supply under variable load and battery discharge. Use Value: Low 0.05 µA reverse leakage minimizes quiescent current drain, extending battery life between charges. |
Use Scenario: Providing stable bias voltage for RF amplifier stages in outdoor telecom base station power supplies. IC Role / Device Role / Timing Role: Zener shunt regulator stabilizing local 33 V node against ripple and line variation. Use Value: 60 pF capacitance avoids signal distortion in adjacent RF sections while delivering tight 33 V regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C33,115 | ±5 % tolerance (vs. ±2 %), higher rdiff (75 Ω), same package and PZSM | Acceptable where cost sensitivity outweighs precision requirement | Select when tighter tolerance is unnecessary and BOM cost reduction is prioritized |
| MMSZ4702T1G | 33 V ±5 %, SOD-123 package (larger), 500 mW Ptot, no AEC-Q101 qualification | Limited to commercial-grade applications; incompatible footprint | Choose only for non-automotive use with existing SOD-123 layout and relaxed reliability needs |
Compared with BZX84J-B33,115, the BZX84-C33,115 trades precision for cost, while MMSZ4702T1G sacrifices automotive qualification and board space efficiency - making the BZX84J-B33,115 optimal for space-constrained, safety-critical 33 V regulation.
Availability
BZX84J-B33,115 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog protection, and medical infusion pump power monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for BZX84J-B33,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX84J series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for precision voltage regulation and transient suppression in harsh-environment automotive and industrial control systems.
FAQ
What is the maximum continuous forward current for BZX84J-B33,115?
The absolute maximum forward current is 250 mA per limiting values table. However, forward conduction is not its intended operating mode - it is designed for reverse-bias Zener regulation. Sustained forward current above 100 mA risks thermal overstress due to VF ≈ 1.1 V at that level, and should be avoided in normal operation.
Can BZX84J-B33,115 replace BZX84-C33 in an existing design?
Yes, electrically and physically - both share identical SOD323F package, 33 V nominal voltage, and pinout. However, BZX84J-B33,115 offers ±2 % tolerance versus ±5 % for the 'C' version, lower differential resistance (60 Ω vs. 75 Ω), and AEC-Q101 qualification. No layout change is needed, but verify if tighter tolerance improves system performance.
What is the thermal resistance from junction to solder point for this diode?
Rth(j-sp) is 55 K/W in free air, measured at the cathode solder point. This value supports thermal modeling of localized heating during pulsed operation and informs pad design - e.g., increasing copper area around cathode reduces effective Rth(j-a) below the datasheet's 230 K/W baseline on standard FR4.
Does BZX84J-B33,115 support bidirectional transient protection?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation. It conducts only when cathode is positive relative to anode. For bidirectional ESD protection, a dedicated TVS array or back-to-back Zener pair would be required; this part functions solely as a 33 V shunt regulator in one polarity.
BZX84J-B33,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±2%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
BZX84J-B33,115 FAQ
1.How can I place an order for BZX84J-B33,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-B33,115 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZX84J-B33,115 reliable?
The price and inventory of BZX84J-B33,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B33,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-B33,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B33,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-B33,115?
BZX84J-B33,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-B33,115 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZX84J-B33,115?
For technical support, including BZX84J-B33,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B33,115 requirements.
6.How does Aetrix verify that BZX84J-B33,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-B33,115 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZX84J-B33,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-B33,115?
All BZX84J-B33,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B33,115, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZX84J-B33,115 part is unused and in its original packaging.
Return procedure for BZX84J-B33,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-B33,115 Tags
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