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Nexperia USA Inc. BZX84J-B4V3,115
- Part No.:
- BZX84J-B4V3,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-B4V3,115.pdf
- Description:
- DIODE ZENER 4.3V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:4,626
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Product details
Overview
BZX84J-B4V3,115 from Nexperia is a 4.3 V ±2 % tolerance Zener diode in SOD323F (SC-90) package, rated for 550 mW total power dissipation and 12 A non-repetitive peak reverse current at 100 µs pulse width, used for precision voltage regulation and overvoltage protection in automotive and industrial power rails.
For engineers reviewing the BZX84J-B4V3,115 datasheet, BZX84J-B4V3,115 pinout, BZX84J-B4V3,115 application, or BZX84J-B4V3,115 equivalent, key selection criteria include Zener voltage tolerance (±2 %), low differential resistance (≤600 Ω at IZ = 5 mA), AEC-Q101 qualification, thermal resistance (Rth(j-a) = 230 K/W), and SC-90 surface-mount compatibility.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 4.3 V nominal Zener voltage is specified at 5 mA test current with a typical temperature coefficient of −3.5 mV/K and differential resistance ≤600 Ω.
The device supports pulsed surge handling up to 40 W (≥7.5 V types) or 100 W (≤6.8 V types), with verified non-repetitive peak reverse current of 12 A at 100 µs square wave, Tj = 25 °C prior to surge - consistent with its 4.3 V rating falling in the ≤6.8 V category.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3 V nominal, ±2 % tolerance at IZ = 5 mA - ensures tight regulation accuracy for reference and clamp circuits. |
| Total Power Dissipation (Ptot) | 550 mW at Tamb ≤ 25 °C on FR4 PCB - defines continuous DC power handling in standard layout. |
| Differential Resistance (rdiff) | ≤600 Ω at IZ = 5 mA - determines output impedance and regulation sensitivity to current variation. |
| Non-repetitive Peak Reverse Current (IZSM) | 12 A at tp = 100 µs, square wave - enables transient overvoltage suppression without failure. |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - confirms low-loss forward conduction during polarity-reversal fault events. |
| Junction Temperature (Tj) | −55 °C to +150 °C - supports operation in extended-temperature automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
SOD323F (SC-90) plastic surface-mounted package: ultra-compact 2.3 mm × 1.35 mm footprint, 0.65 mm height, flat lead terminals suitable for high-density PCB assembly and reflow soldering only.
| 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 bias path for controlled breakdown conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | ≤600 Ω at 5 mA - minimizes output voltage drift across load current changes in feedback or clamp networks. |
| AEC-Q101 qualification | Validated per Automotive Electronics Council stress test standard - enables direct use in automotive ECUs and ADAS power domains. |
| Small SOD323F package | 2.3 mm × 1.35 mm footprint - saves board space in space-constrained modules like battery management and sensor interfaces. |
| Wide Zener voltage range | 2.4 V to 75 V in E24 series - allows single-family sourcing across diverse supply rail voltages without redesign. |
| Tight voltage tolerance | ±2 % option (B-series) - reduces need for post-regulation trimming in precision analog and ADC reference circuits. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Clamping 12 V battery-supplied microcontroller I/O lines against load-dump transients. IC Role / Device Role / Timing Role: Zener-based shunt regulator providing fast overvoltage clamping at signal inputs. Use Value: Withstands 12 A surge at 100 µs and maintains 4.3 V clamping threshold within ±2 %, preventing MCU damage. |
Use Scenario: Protecting 24 V digital input channels from field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp in front-end protection circuitry before optocoupler isolation. Use Value: Low rdiff (≤600 Ω) ensures minimal voltage overshoot during fast transients, preserving input logic integrity. |
| Medical Sensor Signal Conditioning | Consumer IoT Power Rail Stabilization |
Use Scenario: Providing stable 4.3 V reference for analog front-end amplifiers in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision voltage reference source in low-power analog signal chain. Use Value: ±2 % tolerance and −3.5 mV/K tempco enable <10 mV drift over −40 °C to +85 °C operating range. |
Use Scenario: Regulating auxiliary 4.3 V supply for RF transceiver bias in battery-powered smart home hubs. IC Role / Device Role / Timing Role: Low-power shunt regulator maintaining stable bias voltage under variable load. Use Value: 550 mW Ptot and 230 K/W Rth(j-a) allow continuous operation at ambient up to 70 °C without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V3,115 | Same Zener voltage (4.3 V) but ±5 % tolerance and higher rdiff (≤90 Ω at IZ = 1 mA, not 5 mA). | Lower cost; acceptable where tighter regulation isn't required, e.g., non-critical power monitoring. | Select when budget constraints outweigh precision needs and thermal margin permits higher rdiff-induced drift. |
| MMSZ4V3T1G | 4.3 V ±5 %, SOD-123 package (larger), 500 mW Ptot, 10 A IZSM, no AEC-Q101 qualification. | General-purpose industrial use only; unsuitable for automotive due to missing qualification and lower surge rating. | Choose only for non-automotive designs where larger footprint and reduced reliability validation are acceptable. |
Compared with BZX84J-B4V3,115, the BZX84-C4V3,115 trades voltage accuracy for cost, while MMSZ4V3T1G sacrifices automotive qualification and surge robustness for legacy package compatibility - neither matches the combination of ±2 % tolerance, AEC-Q101, and 12 A surge capability in SC-90.
Availability
BZX84J-B4V3,115 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, medical sensor signal conditioning, and consumer IoT power rail stabilization requiring stable component supply across production lifecycles.
Supply support for BZX84J-B4V3,115 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 robust voltage regulation and transient protection in harsh-environment automotive and industrial power systems.
FAQ
What is the maximum continuous reverse power dissipation for BZX84J-B4V3,115?
The maximum continuous reverse power dissipation is 550 mW at ambient temperature ≤25 °C on an FR4 PCB with single-sided copper and a 1 cm² cathode pad. Derating is required above 25 °C at 2.3 mW/°C based on Rth(j-a) = 230 K/W.
Is BZX84J-B4V3,115 suitable for automotive applications?
Yes - it is fully qualified to AEC-Q101 for stress tests including temperature cycling, high-temperature reverse bias, and ESD. Its 150 °C junction rating, −55 °C to +150 °C operating range, and 12 A surge capability meet automotive power rail protection requirements.
How does the ±2 % tolerance affect circuit performance compared to ±5 % variants?
The ±2 % tolerance ensures Zener voltage remains between 4.21 V and 4.39 V at 5 mA, reducing worst-case regulation error by half versus ±5 % parts. This directly improves accuracy in reference circuits and lowers design margin needed for overvoltage clamping thresholds.
What is the forward voltage drop at 100 mA, and why does it matter?
The forward voltage is guaranteed ≤1.1 V at 100 mA. This matters during reverse-polarity fault conditions: low VF limits power dissipation and prevents thermal runaway when the diode conducts forward during incorrect supply connection.
BZX84J-B4V3,115 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):
- 4.3 V
- Tolerance:
- ±2%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 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-B4V3,115 FAQ
1.How can I place an order for BZX84J-B4V3,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-B4V3,115 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-B4V3,115 reliable?
The price and inventory of BZX84J-B4V3,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B4V3,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-B4V3,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B4V3,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-B4V3,115?
BZX84J-B4V3,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-B4V3,115 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-B4V3,115?
For technical support, including BZX84J-B4V3,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B4V3,115 requirements.
6.How does Aetrix verify that BZX84J-B4V3,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-B4V3,115 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-B4V3,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-B4V3,115?
All BZX84J-B4V3,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B4V3,115, 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-B4V3,115 part is unused and in its original packaging.
Return procedure for BZX84J-B4V3,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-B4V3,115 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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