My Inquiry
My Account
Nexperia USA Inc. BZX384-B7V5-QX
- Part No.:
- BZX384-B7V5-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B7V5-QX.pdf
- Description:
- DIODE ZENER 7.5V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,056
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX384-B7V5-Q from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 7.5 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX384-B7V5-Q datasheet, BZX384-B7V5-Q pinout, BZX384-B7V5-Q application, or BZX384-B7V5-Q equivalent, this part serves as a precision low-power shunt regulator in ECU power rails, sensor biasing networks, and ADC reference stabilization where stable 7.5 V clamping with <±2 % tolerance and low thermal drift is required.
Technical Context
This device operates in reverse-biased Zener breakdown mode with a specified 7.5 V working voltage at IZ = 5 mA, differential resistance of ≤80 Ω, and temperature coefficient of +2.5 mV/K - indicating positive drift optimized for mid-range voltage regulation. It exhibits ≤1 μA reverse current at VR = 5.25 V (70 % of VZ) and supports non-repetitive surge handling up to 4.0 A peak reverse current.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers thermal resistance of 110 K/W from junction to solder point and 415 K/W to ambient, enabling reliable operation up to 150 °C junction temperature under defined mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 7.35 V to 7.65 V at IZ = 5 mA - ensures tight 7.5 V regulation with ±2 % tolerance for accurate voltage referencing. |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB. |
| Differential Resistance (rdif) | ≤80 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity in shunt configuration. |
| Reverse Current (IR) | ≤1 μA at VR = 5.25 V - guarantees minimal leakage below clamping threshold, critical for low-power standby circuits. |
| Non-repetitive Peak Current (IZSM) | 4.0 A for tp = 100 μs - enables transient overvoltage suppression without damage in automotive load-dump scenarios. |
| Temperature Coefficient (SZ) | +2.5 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius, supporting thermal stability analysis in engine bay environments. |
| Junction Temperature (Tj) | −65 °C to +150 °C - specifies full operational range compatible with under-hood automotive applications. |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; cathode marked by bar on top surface; footprint compliant with JEDEC MO-203-AB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes Zener conduction path. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation or surge events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including high-temperature operating life, humidity robustness, and mechanical shock resistance. |
| ±2 % voltage tolerance | Enables precise 7.5 V reference generation without post-production trimming in cost-sensitive ECUs and body control modules. |
| Low differential resistance (≤80 Ω) | Minimizes output voltage variation under dynamic load changes, improving stability in feedback-sensing applications. |
| 415 K/W junction-to-ambient thermal resistance | Supports passive thermal management on compact PCB layouts without heatsinking in space-constrained modules. |
| Non-repetitive 40 W peak power rating | Allows safe absorption of short-duration transients such as ISO 7637-2 Pulse 1/2a/5a without derating or external TVS cascading. |
Applications
| Automotive ECU Power Rail Clamping | Industrial Sensor Biasing Network |
|---|---|
Use Scenario: Protecting microcontroller supply inputs against load dump and alternator overshoot in 12 V vehicle systems. IC Role / Device Role / Timing Role: Shunt regulator providing low-impedance 7.5 V clamp to divert excess energy away from downstream logic. Use Value: Maintains regulated voltage within ±2 % across −40 °C to +125 °C ambient, preventing brownout resets during transient events. |
Use Scenario: Supplying stable bias voltage to analog pressure or temperature sensors in factory automation nodes. IC Role / Device Role / Timing Role: Precision voltage reference establishing fixed operating point for ratiometric sensor excitation. Use Value: Delivers <1 μA leakage at 70 % VZ, minimizing error contribution to 16-bit ADC measurements in low-power wireless sensors. |
| ADC Reference Stabilization | USB-C PD Port Overvoltage Protection |
Use Scenario: Stabilizing internal reference for SAR ADCs in battery-powered data loggers requiring <0.1 % line regulation. IC Role / Device Role / Timing Role: Low-noise Zener element filtering ripple and noise on VREF supply lines. Use Value: Achieves ≤80 Ω dynamic impedance, reducing reference voltage modulation caused by digital switching noise. |
Use Scenario: Secondary overvoltage clamp on USB-C power delivery input stage after primary TVS. IC Role / Device Role / Timing Role: Fast-response secondary regulator limiting voltage to 7.5 V during sustained 15–20 V surges. Use Value: Withstands 4.0 A non-repetitive peak current, extending system-level surge immunity beyond basic TVS capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-C7V5-Q | ±5 % tolerance (7.0–7.9 V), higher max IR (≤1.5 μA), same package and Ptot | Acceptable where tighter regulation not required; used in cost-optimized consumer power supplies | Select when budget constraints outweigh precision needs and thermal drift is less critical. |
| MMSZ5236B-TP | ±5 % tolerance (7.14–7.86 V), 500 mW Ptot, SOD-123 package, no AEC-Q101 qualification | Higher power handling but unqualified for automotive; suited for industrial SMPS feedback | Choose only for non-automotive designs needing higher continuous dissipation and larger thermal mass. |
Compared with BZX384-C7V5-Q, this part offers tighter voltage control and lower leakage for precision sensing; versus MMSZ5236B-TP, it trades power margin for automotive qualification and smaller footprint - making it optimal for space- and reliability-critical vehicle subsystems.
Availability
BZX384-B7V5-Q is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and USB-C power delivery protection circuits requiring stable component supply with guaranteed long-term availability.
Supply support for BZX384-B7V5-Q 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 efficient manufacturing.
The BZX384-Q series belongs to Nexperia's automotive Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in harsh-environment vehicle electronics.
FAQ
What is the maximum continuous forward current rating for BZX384-B7V5-Q?
The device is not rated for continuous forward conduction; its absolute maximum forward current is 250 mA under pulsed conditions (tp ≤ 100 μs). In normal Zener operation, it remains reverse-biased, and forward voltage is specified only for characterization (VF ≤ 0.9 V at 10 mA).
Can BZX384-B7V5-Q be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, causing current hogging and thermal runaway when paralleled. For >300 mW requirements, use a single higher-rated device or active regulation instead.
Is the SOD323 package compatible with standard reflow profiles?
Yes - the SOD323 footprint complies with IPC-7351B and supports JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C. Recommended solder land dimensions are 0.5 mm × 1.1 mm per pad with 0.6 mm spacing.
How does the +2.5 mV/K temperature coefficient affect regulation accuracy over temperature?
At 7.5 V nominal, +2.5 mV/K translates to +0.033 %/°C drift - resulting in approximately ±0.375 V deviation over a 150 °C junction range. This is factored into AEC-Q101 qualification testing and remains within specification for most automotive sensor biasing applications.
BZX384-B7V5-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-B7V5-QX FAQ
1.How can I place an order for BZX384-B7V5-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B7V5-QX 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 BZX384-B7V5-QX reliable?
The price and inventory of BZX384-B7V5-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B7V5-QX is usually 5 days.
3.What payment methods are accepted for BZX384-B7V5-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B7V5-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B7V5-QX?
BZX384-B7V5-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B7V5-QX 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 BZX384-B7V5-QX?
For technical support, including BZX384-B7V5-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B7V5-QX requirements.
6.How does Aetrix verify that BZX384-B7V5-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-B7V5-QX 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 BZX384-B7V5-QX meets industry standards.
7.What is the process for return or replacement of BZX384-B7V5-QX?
All BZX384-B7V5-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B7V5-QX, 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 BZX384-B7V5-QX part is unused and in its original packaging.
Return procedure for BZX384-B7V5-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B7V5-QX Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
