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Nexperia USA Inc. BZX384-C30,115
- Part No.:
- BZX384-C30,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C30,115.pdf
- Description:
- DIODE ZENER 30V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:38,023
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Product details
Overview
BZX384-C30,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 30 V nominal breakdown voltage at 2 mA test current, 300 mW total power dissipation, and 150 °C maximum junction temperature. It provides stable reference voltage in low-power linear regulators and overvoltage protection circuits for consumer and industrial power supplies.
For engineers reviewing the BZX384-C30,115 datasheet, BZX384-C30,115 pinout, BZX384-C30,115 application, or BZX384-C30,115 equivalent, key selection criteria include its ±5 % VZ tolerance, 50 Ω typical differential resistance at 2 mA, 0.9 V forward voltage at 10 mA, and non-repetitive peak reverse power capability of 40 W.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain a stable reference voltage across its terminals under varying load and supply conditions. Its 30 V nominal Zener voltage is specified at IZ = 2 mA with a temperature coefficient of +21 mV/K, indicating positive drift with rising junction temperature.
The device exhibits 50 Ω typical dynamic impedance (rdif) at 2 mA, enabling predictable regulation performance in feedback networks. Its thermal resistance from junction to ambient is 415 K/W on FR4 PCB, limiting continuous power handling without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28.0 V to 32.0 V at IZ = 2 mA - defines usable regulation window under standard test condition |
| Differential Resistance (rdif) | 50 Ω typical at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | < 0.1 μA at VR = 22.5 V - ensures minimal leakage in standby or high-impedance bias networks |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power limit on standard FR4 PCB |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 μs - supports transient overvoltage clamping in surge protection designs |
| Junction Temperature (Tj) | −65 °C to +150 °C - enables operation in extended industrial ambient environments |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - relevant for polarity-checking or series-forward applications |
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 in shunt configuration; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-optimized voltage reference where tight regulation is not required, e.g., power supply feedback dividers |
| 300 mW power rating | Supports low-current regulation up to ~10 mA at 30 V without external heatsinking on standard PCB |
| 40 W non-repetitive surge capability | Provides robust transient suppression against ESD or inductive kickback in signal line protection |
| SOD323 footprint compatibility | Enables high-density PCB layout with standardized 0.9 mm pitch and 1.35 mm × 0.85 mm land pattern |
| 150 °C max junction temperature | Permits reliable operation in enclosed industrial enclosures with ambient temperatures up to +85 °C |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing output voltage in low-power AC/DC adapter feedback loop using TL431 or discrete op-amp comparator. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 30 V threshold for error amplifier input. Use Value: Maintains ±5 % output regulation accuracy despite input ripple and load variation within 1–5 mA operating range. |
Use Scenario: Protecting microcontroller GPIO pins from accidental 36 V transients on industrial sensor interface lines. IC Role / Device Role / Timing Role: Fast-acting clamp limiting voltage to 32 V peak before damage occurs. Use Value: Absorbs 40 W surges for 100 μs without degradation, preventing latch-up or oxide rupture in downstream ICs. |
| Reference Voltage Source | Current Limiter Bias |
Use Scenario: Generating stable 30 V reference for analog-to-digital converter (ADC) input scaling in battery-powered instrumentation. IC Role / Device Role / Timing Role: Passive voltage reference establishing known full-scale input for 12-bit ADC measurement. Use Value: Delivers 30 V ±1.5 V over temperature (−40 °C to +85 °C) with <50 Ω source impedance for low-noise sampling. |
Use Scenario: Setting constant current for LED driver bias in automotive interior lighting modules. IC Role / Device Role / Timing Role: Fixed-voltage drop element defining base-emitter bias point for PNP current mirror transistor. Use Value: Provides repeatable 30 V reference to achieve ±5 % LED current accuracy across production batches and temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5262BS-7-F | 30 V nominal, ±5 %, SOT-323 package, 200 mW Ptot, 100 Ω rdif | Lower power rating and higher impedance reduce regulation precision in >5 mA loads | Select when board space allows SOT-323 and thermal budget restricts to ≤200 mW continuous dissipation |
| BZX384-B30,115 | 30 V nominal, ±2 %, same SOD323 package, identical Ptot and rdif | Tighter tolerance improves feedback accuracy but increases unit cost by ~12 % | Choose for closed-loop power supply designs requiring <±2 % output tolerance without redesigning compensation network |
Compared with BZX384-C30,115, MMBZ5262BS-7-F offers smaller footprint but sacrifices 100 mW power headroom and regulation stiffness; BZX384-B30,115 delivers superior voltage accuracy at marginally higher cost and identical thermal behavior.
Availability
BZX384-C30,115 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface protection, analog reference generation, and LED bias circuits requiring stable component supply with consistent parametric performance across production lots.
Supply support for BZX384-C30,115 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 manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, analog, and discrete components with emphasis on reliability and energy efficiency.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered for cost-sensitive, space-constrained voltage regulation and protection functions in consumer, industrial, and computing applications.
FAQ
What is the maximum continuous reverse current the BZX384-C30,115 can sustain at 25 °C ambient?
The device is rated for 300 mW total power dissipation at Tamb ≤ 25 °C. At its nominal 30 V Zener voltage, this corresponds to a maximum continuous reverse current of 10 mA (300 mW ÷ 30 V). Exceeding this requires derating per the thermal resistance curve or PCB copper enhancement.
Does the BZX384-C30,115 have automotive qualification?
No. Per Nexperia's revision history (Rev. 4, Jan 2023), the BZX384 series was explicitly changed to non-automotive qualification. Automotive-grade alternatives-such as the BZX384-Q series-are separately qualified and listed on Nexperia's website; BZX384-C30,115 must not be used in safety-critical or AEC-Q101-compliant systems.
How does the temperature coefficient affect regulation stability over −40 °C to +85 °C?
With a specified +21 mV/K temperature coefficient at IZ = 2 mA, the Zener voltage increases by approximately 2.6 V across that 125 K range. This results in a total shift from ~28.7 V to ~31.3 V, remaining within the 28.0–32.0 V datasheet limits and preserving functional regulation in most non-precision applications.
Can BZX384-C30,115 be used in parallel for higher power dissipation?
No. Zener diodes exhibit manufacturing spread in VZ and dynamic impedance; paralleling units causes current hogging, thermal runaway, and premature failure. For higher power, use a single higher-rated Zener (e.g., BZX84-C30) or active regulation with a pass transistor-never parallel BZX384 devices.
BZX384-C30,115 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):
- 30 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21 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-C30,115 FAQ
1.How can I place an order for BZX384-C30,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C30,115 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 BZX384-C30,115 reliable?
The price and inventory of BZX384-C30,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C30,115 is usually 5 days.
3.What payment methods are accepted for BZX384-C30,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C30,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C30,115?
BZX384-C30,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C30,115 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 BZX384-C30,115?
For technical support, including BZX384-C30,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C30,115 requirements.
6.How does Aetrix verify that BZX384-C30,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-C30,115 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 BZX384-C30,115 meets industry standards.
7.What is the process for return or replacement of BZX384-C30,115?
All BZX384-C30,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C30,115, 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 BZX384-C30,115 part is unused and in its original packaging.
Return procedure for BZX384-C30,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C30,115 Tags
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