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Nexperia USA Inc. BZX84J-B30,115
- Part No.:
- BZX84J-B30,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-B30,115.pdf
- Description:
- DIODE ZENER 30V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:4,715
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Product details
Overview
BZX84J-B30,115 from Nexperia is a 30 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-B30,115 datasheet, BZX84J-B30,115 pinout, BZX84J-B30,115 application, or BZX84J-B30,115 equivalent, this device delivers AEC-Q101-qualified stability, low differential resistance (≤100 Ω at IZ = 2 mA), and tight 2 % voltage tolerance - critical for ECU reference voltage clamping and sensor supply rail conditioning.
Technical Context
This Zener diode operates in reverse breakdown with nominal Zener voltage of 30 V at IZ = 2 mA, exhibiting a positive temperature coefficient of +24.4 mV/K across its operating current range. Its low 100 Ω typical differential resistance ensures minimal voltage shift under load variation.
Designed for surface-mount reliability in high-density PCB layouts, it supports pulsed surge handling up to 1 A (IZSM) at 100 µs, with thermal resistance from junction to ambient of 230 K/W on FR4 board - enabling stable operation in automotive ambient ranges from −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 29.4 V to 30.6 V at IZ = 2 mA - defines precise clamping threshold for 3.3 V/5 V rail protection circuits |
| Tolerance | ±2 % - enables tighter regulation than ±5 % variants, reducing design margin overhead in feedback loops |
| Total Power Dissipation (Ptot) | 550 mW at Tamb ≤ 25 °C - sets continuous DC power limit for steady-state biasing applications |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs - supports transient suppression of ESD or load-dump spikes without failure |
| Differential Resistance (rdiff) | ≤100 Ω at IZ = 2 mA - ensures <100 mV output shift per 1 mA current change, critical for reference stability |
| Reverse Current (IR) | ≤0.05 µA at VR = 22.8 V - guarantees negligible leakage below knee voltage, preserving low-power standby integrity |
| Junction Temperature (Tj) | 150 °C maximum - allows operation in under-hood automotive environments without derating |
Pinout & Package
SOD323F (SC-90) plastic surface-mount package: 2-terminal, ultra-compact footprint (2.3 mm × 1.35 mm × 0.95 mm), 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 Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control and ADAS modules |
| Low differential resistance | ≤100 Ω at 2 mA - minimizes voltage drift under varying load, improving accuracy in precision reference circuits |
| Wide working voltage range | 30 V nominal within E24 series - matches standard 28 V automotive systems and industrial 24–36 V supplies |
| Small SMD package | SOD323F (SC-90) - enables high-density placement on compact PCBs while maintaining thermal performance via solder-pad heat sinking |
| Pulsed surge capability | 1 A non-repetitive peak reverse current (IZSM) - handles ISO 7637-2 pulse 1/2a transients without degradation |
Applications
| Automotive ECU Voltage Clamp | Industrial Sensor Supply Regulation |
|---|---|
Use Scenario: Clamping 5 V microcontroller I/O lines against load dump transients in body control modules. IC Role / Device Role / Timing Role: Zener diode acting as shunt regulator and overvoltage protector on MCU supply rail. Use Value: Maintains rail voltage within ±0.6 V of 5 V during 100 µs surges up to 40 W, preventing latch-up or reset events. |
Use Scenario: Stabilizing 3.3 V supply to analog pressure sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Precision voltage reference element providing stable bias for ADC front-end circuitry. Use Value: Delivers 30 V Zener reference with ±2 % tolerance and <100 mV ripple under 2 mA load variation, ensuring <0.1 % measurement error. |
| Power Supply Overvoltage Protection | Communication Interface Level Translation |
Use Scenario: Protecting USB-C PD controller ICs from input overvoltage during adapter hot-plug events. IC Role / Device Role / Timing Role: Fast-acting shunt limiter placed between VBUS and GND to clamp excursions above safe threshold. Use Value: Activates within 100 ns at 30 V, dissipating 40 W peak energy without damage, preserving downstream silicon integrity. |
Use Scenario: Biasing RS-485 receiver inputs in harsh industrial networks with floating ground potentials. IC Role / Device Role / Timing Role: Reference diode establishing common-mode voltage window for differential receiver stage. Use Value: Provides stable 30 V clamping point with <0.05 µA leakage at 22.8 V, eliminating false triggering due to ground bounce. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C30,115 | ±5 % tolerance, higher rdiff (≤150 Ω), same SOD323F package and PZSM | Acceptable where cost sensitivity outweighs precision; less suitable for closed-loop feedback references | Select when budget constraints dominate and 30 V ±1.5 V tolerance suffices |
| MMSZ5257ET1G | 30 V ±5 %, SOD-123 package, 500 mW Ptot, no AEC-Q101 qualification | Limited to commercial-grade applications; larger footprint reduces board density | Choose only for non-automotive designs where qualification and size are secondary |
Compared with BZX84J-B30,115, the BZX84-C30,115 trades 2 % tolerance for lower cost but sacrifices regulation accuracy in feedback paths, while MMSZ5257ET1G lacks automotive qualification and occupies 30 % more PCB area - making the BZX84J-B30,115 optimal for space-constrained, safety-critical 30 V clamping.
Availability
BZX84J-B30,115 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, power supply overvoltage protection, and communication interface level translation requiring stable component supply across extended temperature and lifecycle demands.
Supply support for BZX84J-B30,115 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BZX84J series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in automotive power domains and industrial control systems.
FAQ
What is the Zener voltage test condition for BZX84J-B30,115?
The nominal 30 V Zener voltage is specified at IZ = 2 mA, with measured range 29.4 V to 30.6 V. This test current ensures stable breakdown characterization while avoiding self-heating effects that occur at higher currents - matching typical bias conditions in reference and clamp circuits.
Is BZX84J-B30,115 suitable for reflow soldering only?
Yes - Nexperia specifies reflow soldering as the sole recommended process. The SOD323F package is not rated for wave or hand soldering due to thermal stress limitations; peak reflow temperature must not exceed 260 °C for ≤10 seconds to prevent delamination or parameter shift.
How does the ±2 % tolerance impact circuit design margin?
A ±2 % tolerance means the actual Zener voltage falls between 29.4 V and 30.6 V at 2 mA. This narrows worst-case design margins by 1.2 V versus ±5 % parts, allowing tighter specification of upstream regulators and reducing headroom needed for overvoltage detection thresholds in safety-critical systems.
Can BZX84J-B30,115 replace older BZX84-B30 variants?
Yes - BZX84J-B30,115 supersedes legacy BZX84-B30 with identical electrical specs, improved PZSM rating (40 W vs. earlier 30 W), and full AEC-Q101 qualification. Pin-compatible and drop-in in all SOD323F footprints, with enhanced surge robustness verified per latest Rev. 3 datasheet.
BZX84J-B30,115 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):
- 30 V
- Tolerance:
- ±2%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21 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-B30,115 FAQ
1.How can I place an order for BZX84J-B30,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-B30,115 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-B30,115 reliable?
The price and inventory of BZX84J-B30,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B30,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-B30,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B30,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-B30,115?
BZX84J-B30,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-B30,115 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-B30,115?
For technical support, including BZX84J-B30,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B30,115 requirements.
6.How does Aetrix verify that BZX84J-B30,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-B30,115 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-B30,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-B30,115?
All BZX84J-B30,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B30,115, 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-B30,115 part is unused and in its original packaging.
Return procedure for BZX84J-B30,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-B30,115 Tags
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