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Nexperia USA Inc. BZX384-A7V5X
- Part No.:
- BZX384-A7V5X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A7V5X.pdf
- Description:
- DIODE ZENER 7.5V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,286
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Product details
Overview
BZX384-A7V5X from Nexperia is a ±1 % 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 150 °C maximum junction temperature. It provides stable reference voltage in low-power analog circuits, power supply feedback loops, and overvoltage protection for microcontroller I/O pins.
For engineers reviewing the BZX384-A7V5X datasheet, BZX384-A7V5X pinout, BZX384-A7V5X application, or BZX384-A7V5X equivalent, key selection criteria include its 7.5 V ±1 % regulation accuracy, 80 Ω typical differential resistance at 5 mA, 1 μA max reverse current at 5.7 V, 2.5 mV/K temperature coefficient, and SOD323 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage reference, maintaining a stable 7.5 V across its terminals when reverse-biased above its breakdown threshold. Its regulation relies on controlled avalanche and Zener mechanisms depending on voltage range, with dominant Zener behavior below 5.6 V and mixed/avalanche dominance above - confirmed by its positive temperature coefficient of +2.5 mV/K at IZ = 5 mA.
The diode exhibits 80 Ω typical dynamic resistance (rdif) at 5 mA test current, enabling tight regulation under varying load conditions, and supports non-repetitive surge handling up to 4.0 A peak reverse current (IZSM) for transient overvoltage suppression per IEC 60134 limiting values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 7.42 V to 7.58 V at IZ = 5 mA - ensures ±1 % precision for accurate voltage clamping or reference generation |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines continuous DC power handling on standard FR4 PCB with single-sided copper |
| Differential Resistance (rdif) | 80 Ω max at IZ = 5 mA - determines regulation stiffness and output voltage variation under load current changes |
| Reverse Current (IR) | 1 μA max at VR = 5.7 V - guarantees minimal leakage in standby or high-impedance bias networks |
| Temperature Coefficient (SZ) | +2.5 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius, critical for temperature-stable references |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines conduction loss when used in forward-biased protection or logic-level translation |
| Junction Temperature (Tj) | −65 °C to +150 °C - sets operational and storage thermal limits for industrial and consumer environments |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads, 1.35 mm × 0.85 mm body size, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation or clamping |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % voltage tolerance | Enables precise reference generation without external trimming in 12-bit ADC biasing or LDO feedback networks |
| 300 mW power rating | Supports continuous regulation in space-constrained IoT sensor nodes and battery-powered wearables |
| 80 Ω differential resistance | Minimizes output voltage deviation under ±1 mA load shifts - suitable for driving op-amp inputs or comparator thresholds |
| +2.5 mV/K tempco | Allows predictable compensation in temperature-sensing circuits using matched diode pairs or ratiometric designs |
| SOD323 footprint | Enables 0.65 mm pitch routing and automated placement on 4-layer PCBs with <0.2 mm trace clearance |
Applications
| Power Supply Feedback | Microcontroller I/O Protection |
|---|---|
Use Scenario: Stabilizing output voltage in adjustable buck converter feedback loop using TLV431-like topology. IC Role / Device Role / Timing Role: Shunt reference providing precise 7.5 V setpoint to error amplifier input. Use Value: ±1 % VZ tolerance reduces output voltage error to ±0.075 V, meeting ±1 % SMPS spec without calibration. |
Use Scenario: Clamping 3.3 V GPIO lines against ESD or accidental 5 V insertion. IC Role / Device Role / Timing Role: Bidirectional overvoltage protector - Zener clamps >7.5 V transients; forward conduction limits negative excursions to −0.9 V. Use Value: 4.0 A non-repetitive IZSM withstands IEC 61000-4-2 Level 4 (8 kV contact) surges without degradation. |
| ADC Reference Buffer | Low-Power Sensor Biasing |
Use Scenario: Generating stable 7.5 V reference for SAR ADC reference buffer stage. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source feeding op-amp follower driving REF+ pin. Use Value: 80 Ω rdif and +2.5 mV/K SZ enable <0.02 % full-scale drift over 0–70 °C ambient range. |
Use Scenario: Biasing photodiode or RTD bridge in battery-operated environmental monitor. IC Role / Device Role / Timing Role: Fixed-voltage current source when paired with series resistor (e.g., 10 kΩ → ~750 μA). Use Value: 1 μA IR at 5.7 V ensures <10 nA error current into high-Z sensor interfaces, preserving 16-bit resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5227BS | 7.5 V ±5 % tolerance, 350 mW Ptot, 100 Ω rdif, −2 mV/K SZ | Looser regulation accuracy but higher surge rating (5.0 A IZSM); suited for cost-sensitive, non-precision clamping | Select when ±5 % VZ tolerance is acceptable and higher transient immunity is required over tight DC stability |
| Vishay BZX384-C7V5 | 7.0 V to 7.9 V (±5 %), same SOD323 package, 150 Ω rdif, +3.5 mV/K SZ | Wider voltage spread increases design margin uncertainty; higher tempco reduces thermal stability | Choose only for legacy compatibility where ±5 % tolerance and relaxed tempco are system-acceptable |
Compared with BZX384-A7V5X, MMBZ5227BS trades ±1 % precision for higher surge robustness, while BZX384-C7V5 sacrifices regulation accuracy and thermal stability for broader manufacturing tolerance - making the A-grade part optimal for precision analog signal chains.
Availability
BZX384-A7V5X is available at Aetrix Electronics and suitable for power supply feedback loops, microcontroller I/O protection, ADC reference buffering, and low-power sensor biasing requiring stable component supply across production volumes and long-lifecycle programs.
Supply support for BZX384-A7V5X 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 leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered specifically for low-power voltage regulation and reference applications demanding tight tolerance, stable tempco, and compact SMD packaging.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX384-A7V5X is rated for continuous operation at up to 250 mA forward current (IF), but as a Zener regulator, its steady-state reverse current is limited by power dissipation. At 7.5 V, the absolute maximum DC reverse current is 40 mA (300 mW ÷ 7.5 V), assuming ambient temperature ≤25 °C and proper PCB thermal relief.
Can this diode be used in series or parallel configurations?
Series connection is valid for higher reference voltages (e.g., two 7.5 V diodes for 15 V), provided matching tolerances and tempcos are considered. Parallel use is not recommended due to mismatched breakdown characteristics causing current hogging - individual diodes must be thermally isolated and current-limited externally if paralleled.
How does the +2.5 mV/K temperature coefficient affect circuit performance?
A +2.5 mV/K coefficient means the Zener voltage increases by 2.5 mV per °C rise in junction temperature. Over a 50 °C ambient range (25–75 °C), this causes ~125 mV drift - acceptable in non-critical biasing but requires compensation (e.g., opposite-sign tempco components) in precision references.
Is this part suitable for automotive applications?
No. The BZX384-A7V5X is explicitly designated as non-automotive qualified per Nexperia's revision history (Rev. 4, January 2023). It lacks AEC-Q200 qualification, extended temperature validation, and automotive-specific reliability testing - use Nexperia's BZX384-Q series for automotive designs.
BZX384-A7V5X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±1%
- Power - Max:
- 300 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:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-A7V5X FAQ
1.How can I place an order for BZX384-A7V5X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A7V5X 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-A7V5X reliable?
The price and inventory of BZX384-A7V5X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A7V5X is usually 5 days.
3.What payment methods are accepted for BZX384-A7V5X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A7V5X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A7V5X?
BZX384-A7V5X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A7V5X 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-A7V5X?
For technical support, including BZX384-A7V5X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A7V5X requirements.
6.How does Aetrix verify that BZX384-A7V5X is sourced from the original manufacturer or authorized distributors?
All BZX384-A7V5X 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-A7V5X meets industry standards.
7.What is the process for return or replacement of BZX384-A7V5X?
All BZX384-A7V5X units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A7V5X, 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-A7V5X part is unused and in its original packaging.
Return procedure for BZX384-A7V5X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A7V5X 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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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
Diodes Incorporated
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