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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZX84J-B7V5,115

Name: BZX84J-B7V5,115
Brand: Nexperia USA Inc.
SKU: BZX84J-B7V5,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZX84J-B7V5,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-90, SOD-323F

Datasheet:: BZX84J-B7V5,115.pdf

Description:: DIODE ZENER 7.5V 550MW SOD323F

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Product details

Overview

BZX84J-B7V5,115 from Nexperia is a 7.5 V ±2 % tolerance Zener voltage regulator 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, designed for precision voltage reference and overvoltage protection in automotive and industrial power rails.

For engineers reviewing the BZX84J-B7V5,115 datasheet, BZX84J-B7V5,115 pinout, BZX84J-B7V5,115 application, or BZX84J-B7V5,115 equivalent, this device delivers AEC-Q101 qualified stability, low 80 Ω differential resistance at 5 mA, and tight ±2 % voltage tolerance - critical for ECU reference circuits, sensor biasing, and I/O clamp protection where thermal drift and surge resilience matter.

Technical Context

This Zener diode operates in reverse breakdown to maintain a stable 7.5 V reference across load and line variations, with temperature coefficient of +2.5 mV/K at 5 mA test current - enabling predictable drift compensation in ambient ranges from −55 °C to +150 °C. Its low 170 pF capacitance at 0 V supports high-frequency noise suppression without signal distortion.

The device uses planar epitaxial construction for consistent breakdown characteristics and features cathode-anode polarity marked by a bar on the SOD323F body. It sustains 4 A non-repetitive peak reverse current under 100 µs square-wave surge conditions, with junction-to-ambient thermal resistance of 230 K/W on standard FR4 PCB mounting.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	7.5 V ±2 % at I_Z = 5 mA - ensures precise regulation within 0.15 V tolerance for reference-sensitive analog stages.
Differential Resistance	80 Ω max at I_Z = 5 mA - minimizes output voltage variation under dynamic load changes.
Total Power Dissipation	550 mW at T_amb ≤ 25 °C - defines continuous DC power handling on standard PCB layout.
Non-repetitive Peak Power	40 W at t_p = 100 µs - enables robust transient overvoltage clamping in automotive load-dump scenarios.
Reverse Current @ 5 V	≤ 0.7 µA - guarantees low leakage in standby mode, preserving battery life in always-on systems.
Forward Voltage	1.1 V max at I_F = 100 mA - supports reliable anode-cathode conduction during forward-biased fault paths.
Temperature Coefficient	+2.5 mV/K at I_Z = 5 mA - allows accurate thermal drift modeling for compensated reference designs.

Pinout & Package

SOD323F (SC-90) surface-mount plastic package: 1.35 mm × 0.80 mm footprint, 0.40 mm nominal height, flat lead profile optimized for automated placement and reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
1 (Marked bar)	Cathode	Connected to regulated output node; reverse-bias terminal where Zener breakdown occurs.
2	Anode	Connected to ground or lower-potential rail; completes current path during regulation or clamping.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114.
±2 % Zener voltage tolerance	Reduces need for post-production trimming in precision reference circuits, lowering BOM and calibration cost.
Low 170 pF junction capacitance	Minimizes high-frequency loading on signal lines when used as ESD clamp or RF bypass element.
230 K/W junction-to-ambient R_th	Enables thermal design predictability on single-layer FR4 boards without heatsinking.
4 A peak reverse surge current	Supports ISO 7637-2 Pulse 1/2a/5a compliance in 12 V automotive subsystems.

Applications

Automotive ECU Reference

Industrial Sensor Biasing

Use Scenario: Providing stable 7.5 V reference for ADC input scaling and microcontroller internal voltage monitor in engine control units.

IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to fix reference potential independent of supply ripple.

Use Value: ±2 % tolerance and +2.5 mV/K TC enable <1 % total error over −40 °C to +125 °C, meeting ASIL-B functional safety margin requirements.

Use Scenario: Biasing bridge-based pressure sensors in factory automation transmitters with 24 V loop-powered architecture.

IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed excitation voltage for Wheatstone bridge elements.

Use Value: 80 Ω differential resistance ensures <0.5 mV output shift under 1 mA bridge current variation, preserving 12-bit measurement accuracy.

Power Rail Clamp

USB Port ESD Protection

Use Scenario: Clamping 12 V battery rail against load dump transients up to 40 V in telematics modules.

IC Role / Device Role / Timing Role: Surge-absorbing Zener diode placed between V_BAT and ground to limit overvoltage stress on downstream LDOs.

Use Value: 40 W non-repetitive peak power rating handles 100 µs surges without degradation, satisfying ISO 16750-2 requirement for Class III vehicles.

Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines in infotainment head units.

IC Role / Device Role / Timing Role: Low-capacitance shunt clamp diverting IEC 61000-4-2 ±8 kV contact discharge energy away from PHY IC pins.

Use Value: 170 pF capacitance avoids signal integrity loss at 480 Mbps, while 4 A peak current capability exceeds HBM 2 kV requirement.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C7V5,115	±5 % tolerance (vs. ±2 %), higher 100 µA max reverse current at 5 V, same SOD323F package.	Acceptable for non-critical biasing but unsuitable for ASIL-B reference circuits requiring tighter initial accuracy.	Select when cost sensitivity outweighs precision needs and thermal drift compensation is not required.
MMSZ5235B-7-F	7.5 V ±5 %, 500 mW P_tot, 300 Ω r_diff, SOD-123 package (larger footprint, higher R_th(j-a)).	Compatible for general-purpose clamping but lacks AEC-Q101 qualification and exhibits 3.7× higher differential resistance.	Choose only for non-automotive consumer applications where board space and qualification are secondary concerns.

Compared with BZX84J-B7V5,115, the BZX84-C7V5,115 trades precision for cost, while MMSZ5235B-7-F sacrifices automotive qualification and regulation stiffness for legacy footprint compatibility - making the BZX84J-B7V5,115 optimal for new AEC-Q101–compliant designs demanding both accuracy and surge resilience.

Availability

BZX84J-B7V5,115 is available at Aetrix Electronics and suitable for automotive ECU reference, industrial sensor biasing, and power rail clamp applications requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.

Supply support for BZX84J-B7V5,115 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–certified Zener diode portfolio, engineered specifically for stable voltage reference and transient protection in harsh-environment automotive and industrial control systems.

FAQ

What is the maximum continuous reverse current the BZX84J-B7V5,115 can sustain at 25 °C?

The device does not specify a maximum continuous reverse current; instead, it defines maximum power dissipation of 550 mW at T_amb ≤ 25 °C. At nominal 7.5 V Zener voltage, this corresponds to ~73 mA continuous Zener current before exceeding thermal limits on standard FR4 PCB mounting.

Does the BZX84J-B7V5,115 support bidirectional ESD protection?

No - it is a unidirectional Zener diode configured for reverse-bias regulation only. Its forward voltage is 1.1 V max, so it conducts readily in forward direction but lacks symmetric clamping behavior. For bidirectional protection, a dedicated TVS array like PESD5V0S1BA must be used.

How does the +2.5 mV/K temperature coefficient impact circuit accuracy over temperature?

At 7.5 V nominal, +2.5 mV/K yields ~0.033 %/°C drift. Over a −40 °C to +125 °C range (165 K ΔT), total drift is ~413 mV - approximately ±2.75 % of nominal voltage. Combined with ±2 % initial tolerance, worst-case total error is ±4.75 %, which remains within typical 12-bit ADC reference budgets.

Can the BZX84J-B7V5,115 replace older BZX84C7V5 variants in existing designs?

Yes, electrically and mechanically - both share identical SOD323F package, pinout, and 7.5 V nominal voltage. However, the 'B' suffix denotes ±2 % tolerance versus ±5 % for 'C', and the BZX84J series adds AEC-Q101 qualification and improved surge ratings. No layout change is needed, but system-level validation of tighter tolerance effects is recommended.

BZX84J-B7V5,115 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):: 7.5 V

Tolerance:: ±2%

Power - Max:: 550 mW

Impedance (Max) (Zzt):: 10 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 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-B7V5,115 FAQ

1.How can I place an order for BZX84J-B7V5,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZX84J-B7V5,115 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-B7V5,115 reliable?

The price and inventory of BZX84J-B7V5,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B7V5,115 is usually 5 days.

3.What payment methods are accepted for BZX84J-B7V5,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B7V5,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZX84J-B7V5,115?

BZX84J-B7V5,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZX84J-B7V5,115 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-B7V5,115?

For technical support, including BZX84J-B7V5,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B7V5,115 requirements.

6.How does Aetrix verify that BZX84J-B7V5,115 is sourced from the original manufacturer or authorized distributors?

All BZX84J-B7V5,115 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-B7V5,115 meets industry standards.

7.What is the process for return or replacement of BZX84J-B7V5,115?

All BZX84J-B7V5,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B7V5,115, 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-B7V5,115 part is unused and in its original packaging.

Return procedure for BZX84J-B7V5,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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