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Nexperia USA Inc. BZX384-C7V5F
- Part No.:
- BZX384-C7V5F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C7V5F.pdf
- Description:
- DIODE ZENER 7.45V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
BZX384-C7V5F from Nexperia is a 7.5 V ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, used for precision low-power voltage reference and overvoltage protection in signal conditioning circuits.
For engineers reviewing the BZX384-C7V5F datasheet, BZX384-C7V5F pinout, BZX384-C7V5F application, or BZX384-C7V5F equivalent, key selection criteria include its 7.0 V to 7.9 V breakdown range at IZ = 5 mA, 80 Ω typical differential resistance, 15 μA max reverse current at VR = 5.6 V, +2.5 mV/K temperature coefficient, and SOD323 thermal resistance of 110 K/W to solder point.
Technical Context
This Zener diode operates in reverse-bias breakdown mode with a nominal 7.5 V regulation voltage at 5 mA test current, exhibiting a positive temperature coefficient (+2.5 mV/K) that stabilizes output under thermal drift. Its differential resistance of ≤80 Ω ensures tight voltage regulation across load variations.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it supports pulse handling up to 40 W (100 μs, square wave) and continuous operation up to 150 °C junction temperature, with thermal resistance from junction-to-solder-point at 110 K/W.
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 reference |
| Differential Resistance rdif | ≤80 Ω - limits output voltage deviation under dynamic current changes |
| Reverse Current IR | ≤15 μA at VR = 5.6 V - ensures low leakage in standby or sensing paths |
| Temperature Coefficient SZ | +2.5 mV/K - provides predictable, stable drift behavior across operating temperature |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power limit on standard FR4 PCB |
| Non-repetitive Peak Power | 40 W (100 μs pulse) - enables transient surge suppression without device failure |
| Junction Temperature Tj | −65 °C to +150 °C - supports industrial and extended-temperature applications |
Pinout & Package
Package: SOD323 (SC-76), 2-pin surface-mount plastic package with cathode marked by bar; footprint compatible with JEDEC MO-203AA standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias current flows from cathode to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % voltage tolerance | Enables cost-optimized regulation where tighter accuracy is not required, e.g., supply rail clamping |
| 300 mW power rating | Supports low-current biasing and reference functions without heatsinking on standard PCBs |
| 40 W surge capability | Provides robust ESD and transient immunity in I/O protection circuits without external TVS stacking |
| SOD323 footprint | Minimizes board space (2.3 × 1.35 mm) while maintaining hand-solderability and reflow compatibility |
| +2.5 mV/K tempco | Compensates for typical NTC behavior in adjacent circuitry, improving system-level voltage stability |
Applications
| Power Supply Rail Clamping | ADC Reference Stabilization |
|---|---|
|
Use Scenario: Protecting microcontroller I/O pins from overvoltage transients on 5 V or 3.3 V logic rails. IC Role / Device Role / Timing Role: Zener clamp placed between signal line and ground to shunt excess energy above 7.5 V. Use Value: Limits voltage excursion to safe levels using only passive components, avoiding active protection ICs. |
Use Scenario: Providing stable 7.5 V reference for 12-bit SAR ADC biasing in sensor front-ends. IC Role / Device Role / Timing Role: Low-noise Zener source feeding high-impedance ADC reference input via RC filter. Use Value: Delivers <1 % regulation error over 0–70 °C with <80 Ω output impedance for accurate conversion. |
| Low-Power Sensor Biasing | Signal-Level Voltage Translation |
|
Use Scenario: Biasing photodiode or thermistor networks requiring stable 7.5 V excitation in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Regulated voltage source for analog sensor excitation, drawing <100 μA quiescent current. Use Value: Enables >10-year battery life while maintaining ±0.5 % reference stability across temperature. |
Use Scenario: Level-shifting 3.3 V logic signals to interface with 5 V legacy peripherals using passive Zener-based translation. IC Role / Device Role / Timing Role: Cathode tied to 5 V rail, anode drives signal node to clamp high-state voltage at ~7.5 V − VF. Use Value: Achieves deterministic high-level translation without active level shifters or additional supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5231BS-7-F | 7.5 V ±5 %, SOT-23 package, 225 mW Ptot, 30 Ω rdif | Higher power density but lower surge rating (25 W); requires different footprint | Select when lower dynamic impedance is critical and board space allows SOT-23 |
| BZX84-C7V5 | 7.5 V ±5 %, SOT-23 package, 300 mW Ptot, 80 Ω rdif, same electrical specs | Same regulation performance but larger 2.9 × 1.3 mm footprint and higher thermal resistance | Select when existing SOT-23 layout must be retained and SOD323 rework is impractical |
Compared with MMBZ5231BS-7-F, BZX384-C7V5F offers superior surge resilience (40 W vs. 25 W) and smaller footprint; compared with BZX84-C7V5, it reduces board area by 45 % and improves thermal coupling to PCB via lower Rth(j-sp) (110 K/W vs. 200 K/W).
Availability
BZX384-C7V5F is available at Aetrix Electronics and suitable for power supply rail clamping, ADC reference stabilization, low-power sensor biasing, and signal-level voltage translation requiring stable component supply and long-term obsolescence management.
Supply support for BZX384-C7V5F 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 optimized for efficiency and miniaturization in consumer, industrial, and automotive markets.
The BZX384 series belongs to Nexperia's precision Zener regulator portfolio, engineered for low-power voltage reference and protection in space-constrained, thermally demanding applications.
FAQ
What is the maximum continuous reverse current this diode can sustain?
The BZX384-C7V5F is rated for a maximum continuous forward current of 250 mA, but as a Zener regulator, it operates in reverse breakdown. Its steady-state reverse current is limited by power dissipation: at 7.5 V, maximum DC reverse current is 40 mA (300 mW ÷ 7.5 V), assuming ambient ≤25 °C and no heatsinking.
Can this Zener be used in series for higher voltage regulation?
Yes - multiple BZX384-C7V5F diodes may be connected in series to achieve higher regulated voltages (e.g., two in series yield ~15 V), but tolerance stacking and thermal coupling must be considered. Total voltage tolerance becomes ±√(5² + 5²) ≈ ±7.1 %, and power derating is required per device.
How does the +2.5 mV/K temperature coefficient affect circuit design?
The positive temperature coefficient means output voltage increases ~2.5 mV per °C rise in junction temperature. In precision references, this requires compensation (e.g., pairing with NTC elements) or operation within narrow ambient ranges; in clamping, it improves margin at elevated temperatures.
Is this part suitable for automotive applications?
No - the BZX384-C7V5F is not automotive-qualified. Nexperia explicitly states in the datasheet that BZX384_SER devices are non-automotive; automotive alternatives (e.g., BZX384-Q series) require separate qualification and are listed on nexperia.com.
BZX384-C7V5F 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):
- 7.45 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:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-C7V5F FAQ
1.How can I place an order for BZX384-C7V5F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C7V5F 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-C7V5F reliable?
The price and inventory of BZX384-C7V5F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C7V5F is usually 5 days.
3.What payment methods are accepted for BZX384-C7V5F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C7V5F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C7V5F?
BZX384-C7V5F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C7V5F 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-C7V5F?
For technical support, including BZX384-C7V5F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C7V5F requirements.
6.How does Aetrix verify that BZX384-C7V5F is sourced from the original manufacturer or authorized distributors?
All BZX384-C7V5F 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-C7V5F meets industry standards.
7.What is the process for return or replacement of BZX384-C7V5F?
All BZX384-C7V5F units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C7V5F, 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-C7V5F part is unused and in its original packaging.
Return procedure for BZX384-C7V5F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C7V5F Tags
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MMSZ5231B-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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