My Inquiry
My Account
Nexperia USA Inc. BZX38450-C9V1F
- Part No.:
- BZX38450-C9V1F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C9V1F.pdf
- Description:
- DIODE ZENER 9.1V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,610
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX38450-C9V1F 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 9.1 V regulation at 50 µA test current, with ±2 % tolerance, 100 Ω differential resistance at 5 mA, and 3.8 mV/K temperature coefficient - enabling stable operation in battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the BZX38450-C9V1F datasheet, BZX38450-C9V1F pinout, BZX38450-C9V1F application, or BZX38450-C9V1F equivalent, key selection criteria include its low 50 µA test current specification, intentional leakage optimization for noise reduction per AN90031, tight ±2 % tolerance, SOD323 footprint compatibility, and thermal resistance of 110 K/W to solder point.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 8.65 V to 9.56 V at 50 µA, exhibiting a positive temperature coefficient of +3.8 mV/K. Its differential resistance drops from 100 Ω at 5 mA to higher values at lower currents, supporting stable regulation under light-load conditions.
The device features intentionally elevated leakage current versus standard B-series variants (per AN90031), optimizing switching speed and reducing high-frequency noise in reference paths. It is rated for 300 mW total power dissipation on FR4 PCB and withstands non-repetitive surge power up to 40 W for 100 µs pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 9.1 V at IZ = 50 µA - defines primary regulation point for low-bias applications |
| Voltage Tolerance | ±2 % - ensures tight output stability across production lots without trimming |
| Differential Resistance | 100 Ω at IZ = 5 mA - determines load regulation error and dynamic impedance in feedback loops |
| Temperature Coefficient | +3.8 mV/K - quantifies drift over temperature; enables predictable compensation design |
| Forward Voltage | 0.9 V at IF = 10 mA - defines anode-cathode drop during forward conduction or ESD protection path |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Junction-to-Solder-Point Rth | 110 K/W - critical for thermal design when mounted on copper pour or thermal pads |
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 output node; polarity-sensitive terminal defining Zener breakdown direction |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables use in nanoampere-bias circuits like CMOS oscillator references and IoT wake-up monitors |
| Optimized leakage profile | Intentionally elevated IR vs. B-series - reduces switching transients and broadband noise in precision analog references |
| Tight voltage tolerance | ±2 % - eliminates need for post-assembly calibration in portable medical sensors and wearables |
| Thermal performance | Rth(j-sp) = 110 K/W - supports reliable operation on minimal copper area without thermal vias |
| Surge robustness | 40 W non-repetitive peak reverse power (100 µs) - withstands ESD events and transient overvoltage in battery-input stages |
Applications
| Portable Sensor Biasing | Low-Power Reference Source |
|---|---|
Use Scenario: Providing stable excitation voltage to MEMS pressure sensors in wireless environmental monitors. IC Role / Device Role / Timing Role: Zener voltage reference supplying fixed 9.1 V bias to sensor bridge, replacing larger LDOs to minimize quiescent current. Use Value: Enables sub-10 µA system sleep current by eliminating LDO dropout and quiescent draw while maintaining ±0.18 V regulation accuracy over −40 °C to +85 °C. |
Use Scenario: Generating precise threshold voltage for comparator-based battery undervoltage lockout in Bluetooth LE beacons. IC Role / Device Role / Timing Role: Low-leakage Zener reference feeding comparator input, configured with resistor divider for 8.5 V trip point. Use Value: Delivers <100 ppm/°C drift and <10 nA leakage at 8 V reverse bias, ensuring consistent shutdown behavior across temperature and shelf life. |
| RF Front-End Bias Network | Industrial Signal Conditioning |
Use Scenario: Setting gate bias for GaAs FET LNAs in 2.4 GHz ISM-band receivers. IC Role / Device Role / Timing Role: Noise-optimized Zener providing clean DC bias point decoupled from noisy digital supply rails. Use Value: Reduced high-frequency noise floor by 8 dB compared to standard B-series Zeners due to intentional leakage tuning per AN90031. |
Use Scenario: Stabilizing op-amp reference input in 4–20 mA loop transmitter front-end. IC Role / Device Role / Timing Role: Precision shunt regulator establishing 9.1 V reference for DAC output scaling and current-sense amplifier gain setting. Use Value: Maintains ±0.2 % full-scale accuracy over 10-year field deployment due to low long-term drift and 100 Ω dynamic impedance limiting load-induced error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX38450-B9V1 | Same 9.1 V nominal voltage but ±5 % tolerance and lower leakage; no intentional noise optimization | Acceptable where cost sensitivity outweighs noise or accuracy requirements | Select for cost-driven consumer electronics where ±5 % regulation and higher noise are acceptable |
| MMSZ5240B | 9.1 V nominal, ±5 %, 350 mW rating, SOD-123 package (larger footprint), 150 Ω rdiff at 20 mA | Requires board redesign; higher power handling but looser tolerance and worse thermal resistance | Choose only if existing design uses SOD-123 or requires >300 mW continuous dissipation |
Compared with BZX38450-B9V1, the C9V1F offers tighter tolerance and noise-optimized leakage for precision analog; versus MMSZ5240B, it provides superior accuracy, smaller footprint, and better thermal performance despite lower absolute power rating.
Availability
BZX38450-C9V1F is available at Aetrix Electronics and suitable for portable sensor biasing, low-power reference sourcing, RF front-end bias networks, and industrial signal conditioning requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX38450-C9V1F 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 sustainability.
The BZX38450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-constrained and noise-sensitive applications where traditional regulators are impractical.
FAQ
What is the maximum continuous reverse current this Zener can handle at 9.1 V?
The BZX38450-C9V1F is rated for 300 mW total power dissipation at 25 °C ambient on FR4 PCB. At 9.1 V, this corresponds to a maximum continuous reverse current of approximately 33 mA (300 mW ÷ 9.1 V). Derating applies above 25 °C per the 415 K/W junction-to-ambient thermal resistance.
How does the "C" suffix differ from "B" in the BZX38450 series?
The "C" suffix denotes ±2 % voltage tolerance and intentional minor rise in leakage current per AN90031, optimized for fast switching and reduced noise. The "B" suffix indicates ±5 % tolerance and standard leakage characteristics, suited for general-purpose regulation where precision and noise are less critical.
Can this Zener be used in forward conduction mode?
Yes - its forward voltage is specified at 0.9 V @ 10 mA, making it usable as a low-drop silicon diode in clamp or protection circuits. However, its primary design intent and characterization are for reverse-bias Zener regulation; forward parameters are secondary and not optimized for rectification.
Is the SOD323 package compatible with standard reflow profiles?
Yes - Nexperia provides validated reflow soldering footprints (Fig. 10) for SOD323, supporting JEDEC J-STD-020-compliant profiles. Peak temperatures up to 260 °C are permitted, with thermal resistance data referenced to standard tin-plated FR4 PCB with single-sided 1 oz copper and defined solder land geometry.
BZX38450-C9V1F 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):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.9 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-C9V1F FAQ
1.How can I place an order for BZX38450-C9V1F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C9V1F 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-C9V1F reliable?
The price and inventory of BZX38450-C9V1F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C9V1F is usually 5 days.
3.What payment methods are accepted for BZX38450-C9V1F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C9V1F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C9V1F?
BZX38450-C9V1F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C9V1F 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-C9V1F?
For technical support, including BZX38450-C9V1F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C9V1F requirements.
6.How does Aetrix verify that BZX38450-C9V1F is sourced from the original manufacturer or authorized distributors?
All BZX38450-C9V1F 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-C9V1F meets industry standards.
7.What is the process for return or replacement of BZX38450-C9V1F?
All BZX38450-C9V1F units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C9V1F, 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-C9V1F part is unused and in its original packaging.
Return procedure for BZX38450-C9V1F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C9V1F 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…
