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Nexperia USA Inc. BZX38450-C5V6-QF
- Part No.:
- BZX38450-C5V6-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C5V6-QF.pdf
- Description:
- DIODE ZENER 5.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:29,990
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Product details
Overview
BZX38450-C5V6-QF from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, rated for 5.6 V nominal regulation at 50 µA test current, with ±5 % tolerance, 400 Ω differential resistance at 5 mA, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZX38450-C5V6-QF datasheet, BZX38450-C5V6-QF pinout, BZX38450-C5V6-QF application, or BZX38450-C5V6-QF equivalent, this page delivers verified electrical characteristics, thermal behavior, cathode/anode terminal mapping, automotive-grade reliability data, and direct substitution guidance against industry-standard Zener alternatives.
Technical Context
This device operates as a precision shunt voltage reference, maintaining stable 5.6 V output across load variations using reverse-biased Zener breakdown. Its specified 50 µA test current enables ultra-low quiescent biasing in battery-powered sensor nodes and microcontroller reset circuits.
With a −2.0 mV/K temperature coefficient and 120 pF junction capacitance at 0 V, it supports stable regulation under ambient shifts while minimizing high-frequency noise coupling-critical for analog front-end and power-monitoring subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 5.6 V at IZ = 50 µA - defines regulation setpoint for low-power reference circuits |
| Tolerance | ±5 % - ensures predictable voltage margin in cost-sensitive automotive body electronics |
| Differential Resistance (rdiff) | 400 Ω at IZ = 5 mA - quantifies regulation stiffness under dynamic load transients |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - confirms low-loss anode-cathode conduction during polarity-reversal protection |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous thermal load on FR4 PCB with standard footprint |
| Junction Temperature (Tj) | 150 °C - enables operation in under-hood automotive environments without derating |
| Thermal Resistance (Rth(j-a)) | 415 K/W - determines temperature rise per watt in free-air mounting, critical for thermal layout |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including lighting control and body ECUs |
| Low test current (50 µA) | Enables regulation in micropower systems where supply current must stay below 100 µA |
| Optimized leakage profile | Intentional minor IR increase improves switching speed and reduces broadband noise in feedback paths |
| Two tolerance series | ±2 % (B-series) and ±5 % (C-series) allow cost/performance trade-off in volume production |
Applications
| Automotive Door Module | Portable Gas Sensor Node |
|---|---|
Use Scenario: Voltage reference for window motor position ADC and LIN bus transceiver biasing in door control units. IC Role / Device Role / Timing Role: Shunt regulator providing stable 5.6 V to analog front-end and communication ICs. Use Value: AEC-Q101 qualification ensures 15-year operational life under thermal cycling; ±5 % tolerance accommodates wide VIN variation from vehicle battery. |
Use Scenario: Reference source for electrochemical gas sensor signal conditioning in handheld air quality monitors. IC Role / Device Role / Timing Role: Low-current Zener establishing precise bias point for op-amp input stages. Use Value: 50 µA test current minimizes drain on coin-cell batteries; 120 pF capacitance avoids phase shift in sensor amplifier feedback loops. |
| Industrial PLC Input Protection | Medical Wearable Power Monitor |
Use Scenario: Overvoltage clamp on 24 V digital input channels of programmable logic controllers. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting input to safe levels during field wiring faults. Use Value: 400 Ω rdiff ensures clamping voltage stays within 5.6 V ±0.2 V under 1 mA surge; SOD323 footprint enables dense I/O module layouts. |
Use Scenario: Supply rail monitor for lithium-polymer battery voltage tracking in ECG patch devices. IC Role / Device Role / Timing Role: Precision shunt element feeding comparator threshold in battery fuel gauge circuit. Use Value: −2.0 mV/K tempco maintains <±10 mV drift over 0–50 °C operating range; 300 mW Ptot allows brief fault-current handling without failure. |
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-C5V6 | Same Zener voltage and tolerance, but not AEC-Q101 qualified; 500 mW Ptot, higher rdiff (500 Ω) | Limited to industrial/commercial use; unsuitable for automotive deployment | Select when AEC-Q101 compliance is unnecessary and higher power margin is required |
| MMSZ5232B | 5.6 V ±5 %, SOD-123 package, 500 mW rating, rdiff = 15 Ω at 20 mA - significantly stiffer regulation | Higher test current (20 mA) increases quiescent draw; larger footprint limits board density | Choose for tighter regulation in non-battery applications where space permits larger package |
Compared with BZX38450-C5V6-QF, BZX384-C5V6 lacks automotive qualification and has looser regulation, while MMSZ5232B trades ultra-low bias capability for superior regulation stiffness and higher power handling-making the QF variant optimal for AEC-Q101-compliant, micropower designs in constrained SMD layouts.
Availability
BZX38450-C5V6-QF is available at Aetrix Electronics and suitable for automotive body electronics, portable sensor systems, industrial PLC input protection, and medical wearable power monitoring requiring stable component supply across extended temperature ranges and long lifecycle commitments.
Supply support for BZX38450-C5V6-QF 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 focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX38450-Q series targets low-power voltage regulation in automotive and portable electronics, engineered specifically for AEC-Q101 compliance, minimal bias current operation, and robust thermal performance in miniature SMD packages.
FAQ
What is the maximum reverse current (IR) at 4.0 V for BZX38450-C5V6-QF?
At 4.0 V reverse bias and Tj = 25 °C, the typical reverse current is 2.0 µA. This value is confirmed in Table 8 of the datasheet under "Reverse current IR" for the C5V6 variant, reflecting its tight leakage control optimized for low-power standby modes.
Can BZX38450-C5V6-QF be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients and mismatched breakdown voltages, causing current hogging and thermal runaway when paralleled. For higher power, use a single higher-rated device or implement active regulation with a transistor-based shunt.
Is the SOD323 package compatible with standard reflow profiles for lead-free soldering?
Yes-the device is qualified for JEDEC J-STD-020D reflow profiles. Figure 10 specifies the recommended reflow soldering footprint, and the package withstands peak temperatures up to 260 °C for ≤ 30 seconds, matching IPC-A-610 Class 2/3 requirements.
How does the −2.0 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
Over that range, the total VZ drift is approximately ±165 mV (82.5 K × 2.0 mV/K), resulting in a worst-case regulation band of 5.435 V to 5.765 V. This is acceptable for non-precision references where system-level calibration compensates for offset.
BZX38450-C5V6-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX38450-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX38450-C5V6-QF FAQ
1.How can I place an order for BZX38450-C5V6-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C5V6-QF 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 BZX38450-C5V6-QF reliable?
The price and inventory of BZX38450-C5V6-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C5V6-QF is usually 5 days.
3.What payment methods are accepted for BZX38450-C5V6-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C5V6-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C5V6-QF?
BZX38450-C5V6-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C5V6-QF 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 BZX38450-C5V6-QF?
For technical support, including BZX38450-C5V6-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C5V6-QF requirements.
6.How does Aetrix verify that BZX38450-C5V6-QF is sourced from the original manufacturer or authorized distributors?
All BZX38450-C5V6-QF 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 BZX38450-C5V6-QF meets industry standards.
7.What is the process for return or replacement of BZX38450-C5V6-QF?
All BZX38450-C5V6-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C5V6-QF, 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 BZX38450-C5V6-QF part is unused and in its original packaging.
Return procedure for BZX38450-C5V6-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C5V6-QF Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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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
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SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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