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Nexperia USA Inc. BZX84J-B75,115
- Part No.:
- BZX84J-B75,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-B75,115.pdf
- Description:
- DIODE ZENER 75V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:1,720
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Product details
Overview
BZX84J-B75,115 from Nexperia is a 75 V ±2 % tolerance Zener voltage regulator diode in SOD323F (SC-90) surface-mount 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 reference and overvoltage protection in automotive power rails.
For engineers reviewing the BZX84J-B75,115 datasheet, BZX84J-B75,115 pinout, BZX84J-B75,115 application, or BZX84J-B75,115 equivalent, this device delivers AEC-Q101-qualified stability in compact SMD form with verified 73.5–76.5 V working voltage range, low 0.05 µA reverse leakage at 51 V, and 35 pF capacitance at 1 MHz for noise-sensitive regulation.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable DC reference voltage under varying load and temperature conditions. Its differential resistance of 400 Ω at IZ = 2 mA ensures tight regulation across operating current, while its positive temperature coefficient of +52.5 mV/K at 75 V enables predictable thermal drift compensation in multi-diode stacks.
The device is characterized for Tj = 25 °C to 150 °C operation, with junction-to-ambient thermal resistance of 230 K/W on FR4 PCB and 55 K/W to solder point, supporting reliable thermal management in high-density automotive PCB layouts where ambient temperatures reach +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 75 V (min 73.5 V, max 76.5 V at IZ = 2 mA - defines precise clamping threshold) |
| Tolerance | ±2 % (tighter than ±5 % C-series variants - enables higher accuracy reference design) |
| Total Power Dissipation | 550 mW at Tamb ≤ 25 °C (limits continuous regulation current to ~7.3 mA at 75 V) |
| Non-repetitive Peak Reverse Power | 40 W at tp = 100 µs (supports transient surge suppression up to 0.53 A peak) |
| Reverse Leakage Current | 0.05 µA max at VR = 51 V (ensures minimal standby power loss in always-on circuits) |
| Diode Capacitance | 35 pF at f = 1 MHz, VR = 0 V (low enough to avoid signal integrity issues in <100 MHz analog paths) |
| Junction Temperature Range | −55 °C to +150 °C (AEC-Q101 qualified for under-hood automotive environments) |
Pinout & Package
SOD323F (SC-90) plastic surface-mount package: 2-terminal, ultra-compact footprint (2.7 mm × 1.6 mm × 0.95 mm), flat lead, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - reverse-biased during regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path when Vin > VZ |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, HAST, and ESD per JESD22-A114 (≥2 kV HBM) |
| Low differential resistance | 400 Ω at IZ = 2 mA - minimizes output voltage shift under load variation |
| Stable temperature coefficient | +52.5 mV/K at 75 V - enables predictable thermal tracking in multi-Zener references |
| Small outline package | SOD323F (SC-90) - occupies only 4.3 mm² PCB area, compatible with 0402 reflow profiles |
| Wide voltage range support | Part of 74-type series spanning 2.4 V to 75 V - simplifies BOM consolidation across platforms |
Applications
| Automotive Power Rail Protection | Industrial Sensor Reference |
|---|---|
|
Use Scenario: Clamping 12 V/24 V battery-supplied ECUs against load dump transients up to 60 V. IC Role / Device Role / Timing Role: Zener shunt regulator providing passive overvoltage clamp at input stage. Use Value: Withstands 40 W non-repetitive surges and maintains <0.1 % voltage drift over −40 °C to +125 °C ambient. |
Use Scenario: Generating stable 75 V bias for high-side current sense amplifiers in motor drives. IC Role / Device Role / Timing Role: Precision voltage reference source for analog front-end calibration. Use Value: ±2 % tolerance and 400 Ω rdiff ensure reference error remains <±1.5 V across 1–5 mA operating range. |
| Medical Instrumentation Supply | Telecom Line Interface |
|
Use Scenario: Providing isolated 75 V auxiliary supply for photomultiplier tube (PMT) bias in diagnostic imaging. IC Role / Device Role / Timing Role: Low-noise Zener reference in high-impedance, low-current bias network. Use Value: 35 pF capacitance and 0.05 µA leakage prevent signal coupling and dark current interference. |
Use Scenario: Overvoltage protection on -48 V telecom line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt protector placed before DC-DC converter input. Use Value: 100 µs surge rating and 0.53 A IZSM limit fault energy without latch-up or thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C75,115 | ±5 % tolerance (70–80 V range), higher 0.5 µA IR at 51 V, same SOD323F package | Acceptable where ±5 % regulation accuracy suffices and cost sensitivity outweighs precision | Select for cost-driven industrial controls where tighter voltage control is not required |
| MMSZ5265B-7-F | 75 V ±5 %, 500 mW Ptot, 300 Ω rdiff at 20 mA, SOD-123 package (larger footprint) | Higher power handling but larger board space; not AEC-Q101 qualified | Choose only for non-automotive designs needing marginally better regulation at higher current |
Compared with BZX84-C75,115, the BZX84J-B75,115 offers tighter tolerance and lower leakage for precision reference use; versus MMSZ5265B-7-F, it provides automotive qualification and smaller footprint at the expense of slightly higher dynamic impedance.
Availability
BZX84J-B75,115 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor reference, medical PMT biasing, and telecom line interface requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84J-B75,115 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, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The BZX84J series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient protection in harsh automotive and industrial environments.
FAQ
What is the maximum continuous Zener current for BZX84J-B75,115 at 25 °C ambient?
At Tamb = 25 °C, the maximum continuous Zener current is calculated as Ptot/VZ = 550 mW / 75 V ≈ 7.3 mA. Derating applies above 25 °C per Rth(j-a) = 230 K/W; at 100 °C ambient, usable current drops to ~3.1 mA to maintain Tj ≤ 150 °C.
Is BZX84J-B75,115 suitable for bidirectional transient voltage suppression?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation only. Forward conduction is limited to 1.1 V at 100 mA and lacks symmetric clamping capability. For bidirectional TVS applications, dedicated devices like PESD5V0S1BA should be used instead.
How does the ±2 % tolerance affect circuit accuracy in a 75 V reference design?
The ±2 % tolerance means the actual Zener voltage falls between 73.5 V and 76.5 V at IZ = 2 mA. In a precision reference application, this introduces up to ±1.5 V absolute error; system-level trimming or post-calibration is required if sub-1 V accuracy is needed.
Can BZX84J-B75,115 replace BZX84-C75,115 without layout changes?
Yes - both share identical SOD323F (SC-90) package dimensions, pinout (cathode/anode), and solder footprint. The only differences are tighter ±2 % tolerance and lower leakage in the 'B' variant; no PCB redesign is required for drop-in replacement where enhanced accuracy is beneficial.
BZX84J-B75,115 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):
- 75 V
- Tolerance:
- ±2%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 175 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
BZX84J-B75,115 FAQ
1.How can I place an order for BZX84J-B75,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-B75,115 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-B75,115 reliable?
The price and inventory of BZX84J-B75,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B75,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-B75,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B75,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-B75,115?
BZX84J-B75,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-B75,115 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-B75,115?
For technical support, including BZX84J-B75,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B75,115 requirements.
6.How does Aetrix verify that BZX84J-B75,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-B75,115 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-B75,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-B75,115?
All BZX84J-B75,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B75,115, 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-B75,115 part is unused and in its original packaging.
Return procedure for BZX84J-B75,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-B75,115 Tags
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