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Nexperia USA Inc. BZX38450-C2V2F
- Part No.:
- BZX38450-C2V2F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C2V2F.pdf
- Description:
- DIODE ZENER 2.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,117
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Product details
Overview
BZX38450-C2V2F 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 2.2 V regulation at 50 µA test current, with ±2 % tolerance, 600 Ω differential resistance at 5 mA, and 0.9 V forward voltage at 10 mA - ideal for battery-powered sensor nodes and portable MCU reset circuits.
For engineers reviewing the BZX38450-C2V2F datasheet, BZX38450-C2V2F pinout, BZX38450-C2V2F application, or BZX38450-C2V2F equivalent, key selection criteria include its 2.2 V nominal Zener voltage, ±2 % tolerance, 300 mW power rating, SOD323 footprint compatibility, and optimized leakage behavior for noise-sensitive analog front-ends.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across load and supply variations by conducting reverse current above its specified Zener breakdown threshold. Its 2.2 V nominal working voltage is characterized at IZ = 50 µA, enabling accurate low-bias operation without significant quiescent current draw.
The BZX38450-C2V2F belongs to the "C" tolerance series (±2 %), features a temperature coefficient of −3.5 mV/K, and exhibits 210 pF junction capacitance at 0 V reverse bias and 1 MHz - parameters critical for stability in low-noise reference and timing circuits where parasitic capacitance affects settling time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.2 V at IZ = 50 µA - defines precise reference point for low-current bias networks |
| Tolerance | ±2 % - ensures tight voltage accuracy for calibration-critical applications |
| Differential Resistance | 600 Ω at IZ = 5 mA - indicates regulation stiffness under small-signal load changes |
| Forward Voltage | 0.9 V at IF = 10 mA - enables predictable anode-cathode drop in polarity-sensitive protection paths |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets maximum continuous thermal load on standard FR4 PCB |
| Junction-to-Ambient Thermal Resistance | 415 K/W - determines temperature rise per watt in free-air mounting |
| Reverse Current @ VR = 1 V | 1.0 µA max - confirms low leakage for standby-mode integrity in energy-harvesting systems |
Pinout & Package
Package: SOD323 (SC-76), surface-mounted plastic package; 2 leads; 1.3 mm pitch; 1.7 mm × 1.25 mm × 0.95 mm body. Cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | 50 µA Zener test condition - minimizes quiescent current impact in always-on battery circuits |
| Controlled leakage optimization | Intentional minor leakage rise per AN90031 - improves switching speed and reduces broadband noise in reference buffers |
| Thermal robustness | 150 °C max junction temperature - supports reliable operation in compact, unventilated enclosures |
| Small-footprint packaging | SOD323 outline with 1.3 mm lead pitch - enables high-density routing in space-constrained IoT modules |
Applications
| Portable Sensor Biasing | MCU Reset Reference |
|---|---|
Use Scenario: Providing stable 2.2 V reference for analog sensor signal conditioning in coin-cell-powered environmental monitors. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed bias point for op-amp input stages and ADC reference dividers. Use Value: ±2 % tolerance and −3.5 mV/K TC ensure <±15 mV drift over −40 °C to +85 °C, preserving measurement linearity without recalibration. |
Use Scenario: Generating clean, low-leakage reset threshold for ultra-low-power microcontrollers in wearables. IC Role / Device Role / Timing Role: Precision Zener element in RC-based reset generator, defining exact voltage trip point for POR circuitry. Use Value: 1.0 µA max reverse current at 1 V ensures minimal loading on weak pull-up networks, preventing premature reset release. |
| Low-Power RF Front-End Bias | Energy-Harvesting Voltage Clamp |
Use Scenario: Supplying regulated gate bias to low-noise amplifiers in sub-GHz ISM band transceivers powered by thin-film batteries. IC Role / Device Role / Timing Role: Low-capacitance (210 pF) Zener clamp stabilizing LNA bias rail against supply ripple and ESD transients. Use Value: 210 pF junction capacitance at 0 V avoids degrading RF impedance matching up to 1 GHz, preserving gain flatness. |
Use Scenario: Clamping output of piezoelectric or thermoelectric energy harvesters to protect downstream supercapacitor charging ICs. IC Role / Device Role / Timing Role: Passive overvoltage protector limiting harvested voltage to 2.2 V ±2 % before storage capacitor reaches critical charge level. Use Value: 300 mW power rating allows safe dissipation of transient surges up to 40 W (100 µs pulse), preventing damage during mechanical shock events. |
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-B2V2 | Same 2.2 V nominal, but ±5 % tolerance and higher rdiff (600 Ω vs. same value, yet less stable at low IZ) | Acceptable where cost sensitivity outweighs accuracy; not suitable for calibration-grade references | Select only if ±5 % regulation error is acceptable and thermal drift compensation is handled externally |
| MMSZ4678T1G | 2.2 V nominal, ±5 %, 500 mW rating, SOD-123 package (larger footprint, 2.7 mm × 1.6 mm) | Higher power handling but incompatible with SOD323 layout; requires PCB redesign | Choose when board space permits larger package and higher surge immunity is required over footprint density |
Compared with BZX38450-C2V2F, the BZX384-B2V2 sacrifices accuracy for cost, while MMSZ4678T1G trades miniaturization for thermal margin - making the C-series part optimal for space-constrained, precision-biased designs where ±2 % and SOD323 fit are mandatory.
Availability
BZX38450-C2V2F is available at Aetrix Electronics and suitable for portable sensor biasing, MCU reset reference, low-power RF front-end bias, and energy-harvesting voltage clamp applications requiring stable component supply, consistent parametric performance, and long-term sourcing continuity.
Supply support for BZX38450-C2V2F 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 logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BZX38450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-operated and space-constrained applications demanding tight voltage tolerance, minimal leakage, and robust thermal performance in miniature SMD packages.
FAQ
What is the maximum reverse current at 1 V for BZX38450-C2V2F?
The maximum reverse current (IR) at VR = 1 V is 1.0 µA, measured at Tj = 25 °C. This low leakage ensures minimal loading on high-impedance bias networks and preserves battery life in always-on applications such as wireless sensor nodes and wearable health monitors.
Can BZX38450-C2V2F be used in place of a 2.2 V TL431-based reference?
No - the BZX38450-C2V2F is a passive two-terminal Zener diode, lacking the active feedback, adjustable output, and current-sinking capability of the TL431. It serves only as a fixed-voltage shunt reference and cannot replicate the TL431's programmability, precision, or drive strength in closed-loop configurations.
Is the SOD323 package compatible with standard reflow profiles?
Yes - the SOD323 package is qualified for lead-free reflow soldering per JEDEC J-STD-020. Recommended peak temperature is 260 °C for ≤ 30 seconds, with ramp rates ≤ 3 °C/s. Figure 10 in the Nexperia datasheet provides the exact solder land pattern and stencil design for reliable assembly.
What does the "C" in BZX38450-C2V2F signify?
The "C" denotes the ±2 % tolerance grade within the BZX38450 series, distinguishing it from the "B" grade (±5 %). This tighter tolerance directly impacts system-level accuracy in voltage reference and biasing functions, especially where temperature-induced drift must remain within strict bounds.
BZX38450-C2V2F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 4 µA @ 1 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-C2V2F FAQ
1.How can I place an order for BZX38450-C2V2F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C2V2F 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-C2V2F reliable?
The price and inventory of BZX38450-C2V2F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C2V2F is usually 5 days.
3.What payment methods are accepted for BZX38450-C2V2F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C2V2F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C2V2F?
BZX38450-C2V2F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C2V2F 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-C2V2F?
For technical support, including BZX38450-C2V2F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C2V2F requirements.
6.How does Aetrix verify that BZX38450-C2V2F is sourced from the original manufacturer or authorized distributors?
All BZX38450-C2V2F 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-C2V2F meets industry standards.
7.What is the process for return or replacement of BZX38450-C2V2F?
All BZX38450-C2V2F units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C2V2F, 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-C2V2F part is unused and in its original packaging.
Return procedure for BZX38450-C2V2F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C2V2F Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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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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