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Nexperia USA Inc. BZX384-C7V5-QX
- Part No.:
- BZX384-C7V5-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C7V5-QX.pdf
- Description:
- DIODE ZENER 7.45V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,231
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Product details
Overview
BZX384-C7V5-Q from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 7.5 V nominal breakdown at 5 mA, with 300 mW total power dissipation and 150 °C maximum junction temperature. It delivers stable reference voltage in low-power automotive and industrial supply rails, including ECU sensor biasing and microcontroller reset circuitry.
For engineers reviewing the BZX384-C7V5-Q datasheet, BZX384-C7V5-Q pinout, BZX384-C7V5-Q application, or BZX384-C7V5-Q equivalent, key selection criteria include its ±5 % VZ tolerance, 80 Ω typical differential resistance at 5 mA, 1 μA reverse current at 5.6 V, +2.5 mV/K temperature coefficient, and AEC-Q101 qualification for under-hood use.
Technical Context
This Zener diode operates in reverse-biased avalanche mode to maintain a stable 7.5 V reference across load variations. Its 80 Ω differential resistance ensures minimal output voltage shift under dynamic current changes, while the +2.5 mV/K temperature coefficient enables predictable drift compensation in ambient ranges from −65 °C to +150 °C.
Designed for surface-mount reliability, it sustains non-repetitive peak reverse power up to 40 W (100 μs pulse) and supports forward currents up to 250 mA. The SOD323 package provides thermal resistance of 110 K/W from junction to solder point, enabling effective heat transfer on FR4 PCBs with standard footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 7.0 V to 7.9 V at IZ = 5 mA - defines usable regulation window for 7.5 V nominal rail |
| Differential Resistance rdif | 80 Ω max at IZ = 5 mA - limits output voltage variation under load current shifts |
| Reverse Current IR | 1 μA max at VR = 5.6 V - ensures low leakage in standby or high-impedance bias networks |
| Temperature Coefficient SZ | +2.5 mV/K at IZ = 5 mA - enables predictable VZ drift compensation over temperature |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Power | 40 W for 100 μs - supports transient surge suppression in automotive load-dump scenarios |
| Junction Temperature Tj | −65 °C to +150 °C - enables operation in engine compartment and industrial control environments |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; cathode marked by bar on top surface; 2.3 mm × 1.35 mm footprint; 0.45 mm nominal height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation in series-shunt regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ±5 % VZ tolerance | Enables cost-optimized regulation where tight voltage accuracy is not required (e.g., non-critical biasing) |
| Low thermal resistance | 110 K/W junction-to-solder-point enables stable operation without heatsinking on standard PCBs |
| High surge capability | 40 W non-repetitive peak power withstand supports ISO 7637-2 pulse 1/2a/5a transient immunity |
| Small-footprint SMD | SOD323 package saves board space vs. DO-35 or SOD123 in space-constrained modules |
Applications
| Automotive ECU Sensor Biasing | Industrial Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 7.5 V reference to analog front-end of oxygen sensor interface in engine control unit. IC Role / Device Role / Timing Role: Zener shunt regulator establishes precise bias voltage for op-amp input stage and ADC reference divider. Use Value: ±5 % tolerance and +2.5 mV/K TC allow predictable calibration across −40 °C to +125 °C operating range without active compensation. |
Use Scenario: Generating clean 7.5 V reset threshold for ARM Cortex-M0+ MCU in programmable logic controller. IC Role / Device Role / Timing Role: Reverse-biased Zener clamps reset line voltage during brown-out events to trigger controlled processor restart. Use Value: 1 μA leakage at 5.6 V prevents false triggering; 300 mW rating supports sustained hold time during slow-rising supply ramps. |
| Consumer Power Supply Feedback | Medical Device Reference Divider |
Use Scenario: Setting feedback voltage for secondary-side TL431-based AC/DC adapter with auxiliary 7.5 V rail. IC Role / Device Role / Timing Role: Zener diode supplies fixed reference to optocoupler LED anode, stabilizing isolated feedback loop. Use Value: 80 Ω differential resistance minimizes regulation error when opto-LED current varies with load transients. |
Use Scenario: Creating precision 7.5 V node for DAC reference buffer in portable ultrasound signal chain. IC Role / Device Role / Timing Role: Low-leakage Zener establishes stable mid-rail in dual-supply analog section prior to buffering. Use Value: AEC-Q101 qualification ensures long-term parametric stability critical for FDA-compliant device lifetime validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B7V5-Q | ±2 % VZ tolerance (vs. ±5 %); 60 Ω rdif max | Higher accuracy needed for precision analog references | Select when tighter regulation is required and cost premium is acceptable |
| MMSZ5236B-7-F | ±5 % VZ, 7.5 V nominal, but only qualified to JESD22-A110 (not AEC-Q101) | Consumer or industrial use without automotive qualification mandate | Choose for non-automotive designs where AEC-Q101 is not required |
Compared with BZX384-C7V5-Q, the BZX384-B7V5-Q offers improved voltage accuracy and lower impedance at higher cost, while MMSZ5236B-7-F provides identical electrical specs but lacks automotive qualification-making it unsuitable for under-hood deployment despite matching VZ and tolerance.
Availability
BZX384-C7V5-Q is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and medical diagnostic equipment requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for BZX384-C7V5-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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, reliability, and miniaturization.
The BZX384-Q series belongs to Nexperia's automotive-qualified Zener diode portfolio, engineered specifically for robust voltage reference and protection in harsh-environment applications including powertrain, body electronics, and ADAS subsystems.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX384-C7V5-Q has a maximum continuous forward current of 250 mA, but its Zener operation relies on reverse current. At 7.5 V regulation, the absolute maximum steady-state reverse current is limited by power dissipation: IZ ≤ 300 mW / 7.5 V ≈ 40 mA at 25 °C ambient on standard FR4 PCB. Derating applies above 25 °C per Rth(j-a) = 415 K/W.
How does the +2.5 mV/K temperature coefficient affect circuit design?
The +2.5 mV/K coefficient means VZ increases by 2.5 mV per degree Celsius rise in junction temperature. Over a −40 °C to +125 °C range, this yields ~413 mV total drift. Designers must account for this in precision references-e.g., by using complementary TC components or calibrating at operating temperature-noting that the coefficient is specified at IZ = 5 mA.
Is this diode suitable for surge protection in automotive load-dump events?
No-while the BZX384-C7V5-Q withstands 40 W non-repetitive surges (100 μs), load-dump transients (ISO 7637-2 Pulse 5a) last milliseconds and deliver far higher energy. This diode is intended for regulation and low-energy clamping; TVS diodes like P6SMB7.5A are required for full load-dump protection.
Can this part replace older BZX384-C7V5 without layout changes?
Yes-the BZX384-C7V5-Q uses the same SOD323 package, pinout, and footprint as legacy BZX384-C7V5 variants. The "-Q" suffix denotes AEC-Q101 qualification and minor process enhancements, but electrical characteristics, thermal behavior, and mechanical dimensions remain fully compatible with existing PCB designs.
BZX384-C7V5-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):
- 7.45 V
- Tolerance:
- ±5%
- 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-C7V5-QX FAQ
1.How can I place an order for BZX384-C7V5-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C7V5-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-C7V5-QX reliable?
The price and inventory of BZX384-C7V5-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-C7V5-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C7V5-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C7V5-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C7V5-QX?
BZX384-C7V5-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C7V5-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-C7V5-QX?
For technical support, including BZX384-C7V5-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C7V5-QX requirements.
6.How does Aetrix verify that BZX384-C7V5-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C7V5-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-C7V5-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C7V5-QX?
All BZX384-C7V5-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C7V5-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-C7V5-QX part is unused and in its original packaging.
Return procedure for BZX384-C7V5-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C7V5-QX Tags
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