My Inquiry
My Account
Nexperia USA Inc. BZX38450-C5V6F
- Part No.:
- BZX38450-C5V6F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C5V6F.pdf
- Description:
- DIODE ZENER 5.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:985
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX38450-C5V6F from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision biasing and voltage reference in ultra-low-power circuits. It delivers a nominal 5.6 V regulation at 50 µA test current, with ±2 % tolerance, 400 Ω dynamic impedance at 5 mA, and −2.0 mV/K temperature coefficient - enabling stable operation in portable battery-powered sensors and microcontroller reset circuits.
For engineers reviewing the BZX38450-C5V6F datasheet, BZX38450-C5V6F pinout, BZX38450-C5V6F application, or BZX38450-C5V6F equivalent, key selection criteria include its low 50 µA test current, tight ±2 % tolerance, SOD323 footprint compatibility, and specified thermal resistance of 110 K/W to solder point - critical for space-constrained, thermally sensitive designs.
Technical Context
This Zener diode operates in reverse breakdown mode with a precisely trimmed 5.6 V nominal working voltage at IZ = 50 µA. Its differential resistance is 400 Ω at 5 mA, and temperature coefficient is −2.0 mV/K - indicating predictable, slightly negative drift over temperature.
The device is rated for 300 mW total power dissipation on FR4 PCB (single-sided copper), with junction-to-solder-point thermal resistance of 110 K/W. It exhibits ≤ 0.9 V forward voltage at 10 mA and ≤ 120 pF capacitance at 0 V reverse bias and 1 MHz - supporting low-noise, high-frequency bypass and reference functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.6 V at IZ = 50 µA - enables accurate low-bias voltage reference for MCU brown-out detection |
| Tolerance | ±2 % - ensures tight regulation without post-assembly trimming in production |
| Differential Resistance | 400 Ω at IZ = 5 mA - limits output voltage shift under load variation in feedback networks |
| Temperature Coefficient | −2.0 mV/K - provides predictable, compensated drift for stable reference across −55 °C to +150 °C |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - minimizes conduction loss when used in series protection or polarity-sensitive paths |
| Capacitance | ≤ 120 pF at VR = 0 V, f = 1 MHz - preserves signal integrity in RF-coupled or high-speed analog monitoring nodes |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C - supports continuous operation in compact PCB layouts with minimal copper area |
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 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal - essential for correct orientation during automated placement |
| 2 (A) | Anode | Connected to ground or lower-potential rail; forms reverse-biased junction that clamps voltage at 5.6 V |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - reduces quiescent current draw in battery-powered IoT endpoints and wearables |
| Tight voltage tolerance | ±2 % (C-series) - eliminates need for binning or external calibration in precision reference designs |
| Optimized leakage profile | Intentional minor rise in IR for BZX38450-C variants - improves switching speed and reduces noise in transient-sensitive applications |
| Thermal performance | Rth(j-sp) = 110 K/W - enables reliable operation with minimal PCB copper, critical for dense mixed-signal layouts |
| Small-footprint packaging | SOD323 outline - saves >60 % board area vs. DO-35, compatible with standard 0603 reflow profiles |
Applications
| Microcontroller Reset Circuit | Portable Sensor Biasing |
|---|---|
Use Scenario: Providing clean, stable 5.6 V reference to enable/disable reset logic during power-up and brown-out events. IC Role / Device Role / Timing Role: Zener voltage reference element in RC-based reset generator or dedicated supervisor IC input divider. Use Value: ±2 % tolerance and −2.0 mV/K TC ensure reset threshold remains within 50 mV over −40 °C to +85 °C ambient - preventing spurious resets. |
Use Scenario: Supplying regulated bias voltage to analog front-end amplifiers and ADC reference inputs in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Low-current shunt regulator establishing precise DC operating point for op-amp rails and reference buffers. Use Value: 50 µA test current and 400 Ω rdiff allow stable 5.6 V output even with <10 µA load variation - preserving sensor accuracy and SNR. |
| USB-C Power Negotiation Reference | Low-Power LED Current Control |
Use Scenario: Generating fixed 5.6 V reference for CC line voltage monitoring in USB-C port controllers. IC Role / Device Role / Timing Role: Precision shunt reference in voltage divider network feeding ADC or comparator input of USB PD controller. Use Value: 120 pF capacitance and low leakage (<4 µA at VR = 5.1 V) prevent signal distortion and false PD contract detection during hot-plug events. |
Use Scenario: Setting constant current for indicator LEDs in energy-harvesting devices where supply voltage varies widely. IC Role / Device Role / Timing Role: Shunt regulator in series with current-limiting resistor to maintain fixed LED forward voltage drop. Use Value: 300 mW power rating and 0.9 V forward voltage support up to 250 mA pulsed current - enabling robust visual status indication without external regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B5V6 | Same 5.6 V nominal, but ±5 % tolerance (B-series) and higher rdiff (500 Ω) | Acceptable where cost sensitivity outweighs precision; less suitable for reset thresholds requiring <100 mV margin | Select only if design allows wider voltage tolerance and higher dynamic impedance impact |
| MMSZ5232B-TP | 5.6 V, ±5 %, 500 Ω rdiff, SOD-123 package (larger footprint, 2.7 mm × 1.6 mm) | Higher power handling (500 mW), but incompatible with SOD323 land patterns and tighter layout constraints | Choose only when thermal headroom >300 mW is required and board space permits larger package |
Compared with BZX38450-C5V6F, the BZX384-B5V6 trades precision for cost, while MMSZ5232B-TP sacrifices miniaturization for thermal margin - making BZX38450-C5V6F optimal for space- and accuracy-critical portable electronics.
Availability
BZX38450-C5V6F is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset circuits, USB-C PD reference generation, and low-power LED control requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX38450-C5V6F 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 high-volume, high-reliability discrete and logic devices, with leadership in advanced packaging and automotive-qualified components.
The BZX38450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-powered and space-constrained applications demanding tight voltage tolerance, ultra-low test current, and robust thermal performance in miniature SMD packages.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX38450-C5V6F is a Zener diode designed to operate in controlled reverse breakdown at its nominal 5.6 V Zener voltage. Its absolute maximum non-repetitive peak reverse voltage is not specified independently; instead, it is limited by the 40 W non-repetitive surge rating at 100 µs pulse width. Continuous reverse operation must remain within the 5.6 V ±2 % regulation band under defined test currents.
Can this diode be used in series with other Zeners to achieve higher reference voltages?
Yes, BZX38450-C5V6F can be cascaded in series to generate higher reference voltages, provided each device shares current equally via matched characteristics and thermal coupling. However, cumulative tolerance (±2 % per device) and temperature coefficient drift (−2.0 mV/K each) scale linearly - e.g., two in series yields ~11.2 V ±4 % and −4.0 mV/K, requiring careful system-level validation.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes, the SOD323 package of BZX38450-C5V6F is fully compatible with IPC/JEDEC J-STD-020D-compliant lead-free reflow profiles. Nexperia specifies a recommended footprint (Fig. 10) with 0.5 mm solder lands and 0.6 mm solder resist openings - ensuring reliable wetting and minimizing tombstoning risk in high-speed placement processes.
How does the "C" suffix differ from "B" in the BZX38450 series?
The "C" suffix denotes ±2 % voltage tolerance and an intentional minor rise in reverse leakage current optimized for faster switching and reduced noise, per Application Note AN90031. In contrast, "B" parts offer ±5 % tolerance and standard leakage behavior - making "C" variants preferred for precision reference and low-noise analog applications.
BZX38450-C5V6F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX38450
- 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:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX38450-C5V6F FAQ
1.How can I place an order for BZX38450-C5V6F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C5V6F 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-C5V6F reliable?
The price and inventory of BZX38450-C5V6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C5V6F is usually 5 days.
3.What payment methods are accepted for BZX38450-C5V6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C5V6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C5V6F?
BZX38450-C5V6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C5V6F 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-C5V6F?
For technical support, including BZX38450-C5V6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C5V6F requirements.
6.How does Aetrix verify that BZX38450-C5V6F is sourced from the original manufacturer or authorized distributors?
All BZX38450-C5V6F 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-C5V6F meets industry standards.
7.What is the process for return or replacement of BZX38450-C5V6F?
All BZX38450-C5V6F units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C5V6F, 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-C5V6F part is unused and in its original packaging.
Return procedure for BZX38450-C5V6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C5V6F 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…
