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Nexperia USA Inc. BZX384-B13-QX
- Part No.:
- BZX384-B13-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B13-QX.pdf
- Description:
- DIODE ZENER 13V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,635
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Product details
Overview
BZX384-B13-QX from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 13 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-B13-QX datasheet, BZX384-B13-QX pinout, BZX384-B13-QX application, or BZX384-B13-QX equivalent, this page delivers verified Zener voltage, differential resistance, temperature coefficient, reverse current limits, and automotive-grade thermal performance data required for precision biasing, ESD clamp design, and supply rail stabilization in harsh-environment electronics.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable DC reference voltage under varying load and temperature conditions. Its 13 V nominal Zener voltage is specified at IZ = 5 mA with ±2 % tolerance, and exhibits a positive temperature coefficient of +7.0 mV/K at that current, enabling predictable drift compensation in analog feedback paths.
The device supports transient suppression via non-repetitive peak reverse power dissipation up to 40 W (100 μs pulse), while maintaining low differential resistance (≤170 Ω) and reverse leakage <30 μA at VR = 10.4 V - critical for low-noise sensor biasing and high-impedance voltage monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.7 V to 13.3 V at IZ = 5 mA - ensures tight regulation window for 12 V system references |
| Tolerance | ±2 % - enables accurate voltage threshold setting without post-production trimming |
| Differential Resistance (rdif) | ≤170 Ω at IZ = 5 mA - minimizes output impedance variation under load changes |
| Reverse Current (IR) | <30 μA at VR = 10.4 V - guarantees low standby power loss in always-on circuits |
| Temperature Coefficient (SZ) | +7.0 mV/K at IZ = 5 mA - allows predictable thermal drift modeling in automotive ambient range |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB - defines continuous DC power handling in compact layouts |
| Non-repetitive Peak Power | 40 W (100 μs pulse) - supports surge immunity in CAN/LIN bus interface protection |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-terminal, cathode-bar marked, 2.3 mm × 1.35 mm footprint, 0.95 mm height, optimized for reflow soldering per IPC-7095 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias polarity must be maintained for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control modules and body electronics |
| Low thermal resistance | Rth(j-sp) = 110 K/W to cathode solder point - improves reliability in thermally constrained PCB areas |
| Precision voltage tolerance | ±2 % at 5 mA - eliminates need for external trimming in 13 V reference designs |
| Controlled temperature drift | +7.0 mV/K coefficient - enables first-order thermal compensation in analog front-ends |
| High surge robustness | 40 W non-repetitive peak power - withstands ISO 7637-2 pulse 1/2/5a transients without degradation |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stable 13 V reference for microcontroller ADC input scaling and LIN bus transceiver biasing. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed DC offset and noise filtering for analog sensor interfaces. Use Value: Maintains <±0.26 V regulation error across -40 °C to +125 °C ambient, ensuring consistent ADC code mapping. |
Use Scenario: Precision biasing of bridge-based pressure sensors in factory automation equipment. IC Role / Device Role / Timing Role: Low-drift voltage reference establishing excitation potential for Wheatstone bridges. Use Value: Differential resistance ≤170 Ω prevents gain error shift under varying bridge loading conditions. |
| Automotive Infotainment Power Sequencing | Medical Diagnostic Equipment Voltage Monitoring |
Use Scenario: Overvoltage clamp on 12 V supply rail feeding display backlight drivers and audio amplifiers. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing short-duration surges during load dump events. Use Value: Withstands 40 W peak power (100 μs) without parametric shift, preserving downstream IC integrity. |
Use Scenario: Fault-detection reference in battery-powered portable ultrasound units requiring stable 13 V supervision. IC Role / Device Role / Timing Role: Low-leakage Zener element in comparator-based undervoltage lockout circuitry. Use Value: Reverse current <30 μA at 10.4 V ensures >10-year battery life in standby monitoring mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B13-Q | Same electrical specs and AEC-Q101 qualification; differs only in tape-and-reel packaging (Q vs QX) | No functional difference; QX denotes 10,000-piece reel, Q denotes 3,000-piece reel | Select QX for high-volume automated assembly requiring extended reel length |
| MMSZ5243B-TP | 13 V ±5 % tolerance, 500 mW Ptot, no AEC-Q101 qualification, SOD-123 package | Higher power but wider tolerance and non-automotive grade; unsuitable for safety-critical systems | Use only in cost-sensitive consumer applications where ±5 % regulation and industrial temp range suffice |
Compared with BZX384-B13-QX, the BZX384-B13-Q offers identical performance in a smaller reel format, while MMSZ5243B-TP trades automotive reliability and tight tolerance for higher power and lower cost - making the QX variant optimal for production-grade automotive electronics requiring traceable, qualified components.
Availability
BZX384-B13-QX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, infotainment power sequencing, and medical diagnostic equipment voltage monitoring requiring stable component supply with full AEC-Q101 compliance and lot-level traceability.
Supply support for BZX384-B13-QX 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 leadership in automotive-grade reliability and energy-efficient technology.
The BZX384-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for precision voltage reference and transient protection in automotive and industrial environments demanding long-term stability and thermal resilience.
FAQ
What is the maximum continuous reverse current the BZX384-B13-QX can sustain at 125 °C ambient?
At Tamb = 125 °C, derated power dissipation is approximately 150 mW (per thermal resistance Rth(j-a) = 415 K/W). With VZ ≈ 13 V, maximum continuous reverse current is ~11.5 mA - confirmed by junction temperature limit of 150 °C and Ptot derating curves in the official Nexperia datasheet Rev. 1.
Does the BZX384-B13-QX support wave soldering, and what are the recommended footprint dimensions?
Yes, BZX384-B13-QX is qualified for both reflow and wave soldering. The recommended wave soldering footprint uses 1.2 mm × 2.75 mm solder lands with 0.6 mm spacing, as defined in Figure 13 of the datasheet - ensuring reliable wetting and mechanical adhesion without tombstoning or voiding.
How does the +7.0 mV/K temperature coefficient affect regulation accuracy over -40 °C to +125 °C?
Over this 165 K range, the coefficient causes ~1.15 V total drift (7.0 mV/K × 165 K). However, since VZ is specified at 25 °C, actual regulation remains within 12.7–13.3 V at 25 °C, and shifts predictably to ~13.85 V at 125 °C - enabling calibration or compensation in closed-loop systems.
Is the cathode marking bar electrically connected to any internal structure beyond the cathode terminal?
No - the marking bar is a molded surface feature aligned with the cathode die attach pad and serves solely as a visual polarity indicator. It has no electrical connection to the silicon die or internal metallization, and does not affect thermal or electrical performance when soldered per the recommended footprint.
BZX384-B13-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):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-B13-QX FAQ
1.How can I place an order for BZX384-B13-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B13-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-B13-QX reliable?
The price and inventory of BZX384-B13-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-B13-QX is usually 5 days.
3.What payment methods are accepted for BZX384-B13-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B13-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B13-QX?
BZX384-B13-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B13-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-B13-QX?
For technical support, including BZX384-B13-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B13-QX requirements.
6.How does Aetrix verify that BZX384-B13-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-B13-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-B13-QX meets industry standards.
7.What is the process for return or replacement of BZX384-B13-QX?
All BZX384-B13-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B13-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-B13-QX part is unused and in its original packaging.
Return procedure for BZX384-B13-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B13-QX Tags
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