My Inquiry
My Account
Nexperia USA Inc. BZX384-C10-QX
- Part No.:
- BZX384-C10-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C10-QX.pdf
- Description:
- DIODE ZENER 10V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,506
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX384-C10-Q from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 10 V nominal breakdown voltage at 5 mA test current, 300 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX384-C10-Q datasheet, BZX384-C10-Q pinout, BZX384-C10-Q application, or BZX384-C10-Q equivalent, this device serves as a precision low-power shunt regulator where stable 10 V reference, low differential resistance (≤150 Ω), and automotive-grade reliability are required in space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable 10 V reference across its terminals under regulated current conditions. Its ±5 % tolerance (C-series), 150 Ω max differential resistance at IZ = 5 mA, and −0.2 mV/K temperature coefficient ensure predictable regulation in ambient temperatures from −65 °C to +150 °C.
Designed for surface-mount use on FR4 PCBs with standard SOD323 footprint, it supports non-repetitive peak reverse power up to 40 W (100 μs pulse) and handles forward currents up to 250 mA, enabling robust transient suppression and biasing in automotive control modules and sensor signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 9.4 V to 10.6 V at IZ = 5 mA - defines usable 10 V regulation window with ±5 % tolerance |
| Differential Resistance (rdif) | ≤150 Ω at IZ = 5 mA - ensures minimal output voltage shift under load variation |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Reverse Current (IR) | ≤20 μA at VR = 7.6 V - guarantees low leakage below knee voltage for stable quiescent operation |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 μs - enables short-duration surge clamping without thermal failure |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive applications including engine control units and body electronics |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; 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 breakdown |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 compliant - meets stress-test requirements for automotive discrete semiconductors |
| Low-profile packaging | SOD323 footprint (2.3 × 1.35 mm) - enables high-density layout in compact ECUs and ADAS modules |
| Precision voltage reference | 10 V ±5 % with 150 Ω rdif - delivers stable bias for op-amp references and ADC voltage scaling |
| Transient robustness | 40 W non-repetitive peak power - suppresses ESD and load-dump spikes in 12 V vehicle systems |
| Thermal performance | Rth(j-a) = 415 K/W - allows operation up to 150 °C junction temperature with standard PCB mounting |
Applications
| Engine Control Unit (ECU) Reference | Infotainment System Power Rail Clamp |
|---|---|
Use Scenario: Providing stable 10 V reference for microcontroller ADC and analog sensor interfaces in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining precise bias point despite battery voltage fluctuations (9–16 V). Use Value: Enables <1 % measurement error in oxygen sensor and throttle position feedback due to tight VZ tolerance and low rdif. |
Use Scenario: Clamping 12 V supply rail against load-dump transients (>30 V, 100 ms) in head-unit power management. IC Role / Device Role / Timing Role: Passive overvoltage protector absorbing surge energy via controlled Zener conduction. Use Value: Prevents downstream DC-DC converter damage by limiting rail voltage to ≤10.6 V during 40 W/100 μs surges. |
| Body Control Module (BCM) Voltage Monitor | ADAS Camera Bias Supply |
Use Scenario: Monitoring 12 V battery health by comparing divided battery voltage against 10 V Zener reference in door module logic. IC Role / Device Role / Timing Role: Precision voltage threshold element in comparator-based undervoltage/overvoltage detection circuit. Use Value: Achieves ±0.5 V detection accuracy across −40 °C to +125 °C due to low temperature coefficient (−0.2 mV/K). |
Use Scenario: Generating clean 10 V bias for CMOS image sensor analog front-end in surround-view camera modules. IC Role / Device Role / Timing Role: Low-noise shunt regulator filtering ripple from switching power supply outputs. Use Value: Reduces sensor output noise floor by >15 dB through low dynamic impedance (150 Ω) and <20 μA leakage. |
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-B10-Q | ±2 % tolerance (9.8–10.2 V), 100 Ω rdif, same package and Ptot | Narrower regulation band improves reference accuracy but increases cost and reduces availability | Select when <0.2 % VZ drift over temperature is critical and cost premium is acceptable |
| MMSZ5240B-TP | ±5 % tolerance (9.5–10.5 V), 170 Ω rdif, SOD-123 package, 500 mW Ptot | Larger footprint and higher power rating suit industrial power supplies but lack AEC-Q101 qualification | Choose for non-automotive designs requiring higher continuous power or legacy SOD-123 compatibility |
Compared with BZX384-B10-Q, the C10-Q trades tighter regulation for broader tolerance and lower unit cost; versus MMSZ5240B-TP, it offers automotive qualification and smaller size at the expense of absolute power headroom.
Availability
BZX384-C10-Q is available at Aetrix Electronics and suitable for automotive engine control units, infotainment power clamping, and body control module voltage monitoring requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX384-C10-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, miniaturization, and automotive-grade quality.
The BZX384-Q series belongs to Nexperia's automotive-qualified Zener regulator portfolio, engineered specifically for precision voltage reference and transient suppression in harsh-environment vehicle electronics.
FAQ
What is the maximum continuous reverse current for stable 10 V regulation?
The BZX384-C10-Q maintains stable regulation at IZ = 5 mA per datasheet test condition. Continuous operation up to 25 mA is feasible within its 300 mW power limit (10 V × 25 mA = 250 mW), provided junction temperature stays ≤150 °C with adequate PCB copper area.
How does the ±5 % tolerance affect system-level accuracy in a 10 V reference design?
With a 9.4–10.6 V VZ range, the worst-case deviation is ±6 % relative to nominal 10 V. In practice, combined with low rdif (≤150 Ω) and minimal temperature drift (−0.2 mV/K), total system error remains within ±0.8 % over −40 °C to +125 °C when used with proper current limiting.
Can BZX384-C10-Q replace BZX384-A10-Q in an existing design?
Yes, as a direct drop-in replacement with identical SOD323 package and pinout. However, the wider ±5 % tolerance (vs. ±1 % for A10-Q) may impact precision analog circuits-verify that 9.4–10.6 V regulation meets system reference accuracy requirements before substitution.
What PCB layout practices maximize thermal performance?
Use minimum 1 mm² copper pour connected to each pad, avoid thermal relief on cathode/anode traces, and place the device away from heat sources. The datasheet specifies Rth(j-a) = 415 K/W for single-sided FR4 with standard footprint-doubling copper area reduces thermal resistance by ~25 %.
BZX384-C10-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):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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-C10-QX FAQ
1.How can I place an order for BZX384-C10-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C10-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-C10-QX reliable?
The price and inventory of BZX384-C10-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-C10-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C10-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C10-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C10-QX?
BZX384-C10-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C10-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-C10-QX?
For technical support, including BZX384-C10-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C10-QX requirements.
6.How does Aetrix verify that BZX384-C10-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C10-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-C10-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C10-QX?
All BZX384-C10-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C10-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-C10-QX part is unused and in its original packaging.
Return procedure for BZX384-C10-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C10-QX Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
