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Nexperia USA Inc. BZX38450-C2V0F
- Part No.:
- BZX38450-C2V0F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C2V0F.pdf
- Description:
- DIODE ZENER 2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,766
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Product details
Overview
BZX38450-C2V0F 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 2.0 V regulation at 50 µA test current, with ±2 % tolerance, 600 Ω differential resistance at 5 mA, and 1.0 µA max reverse current at VR = 1.0 V - ideal for portable battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZX38450-C2V0F datasheet, BZX38450-C2V0F pinout, BZX38450-C2V0F application, or BZX38450-C2V0F equivalent, this page provides verified electrical characteristics, thermal behavior, SOD323 footprint details, and direct replacement guidance for low-current Zener selection in space-constrained designs.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across its cathode–anode terminals under reverse-bias conditions. Its specified regulation at 50 µA enables operation in nanoamp-level bias networks where conventional regulators draw excessive quiescent current.
The BZX38450-C series features intentional minor leakage rise to reduce noise and improve switching transient response, per AN90031. Junction-to-ambient thermal resistance is 415 K/W on FR4 PCB, limiting continuous power dissipation to 300 mW at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.0 V at IZ = 50 µA - defines precise reference point for low-current bias networks |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-calibration in production |
| Differential Resistance | 600 Ω max at IZ = 5 mA - determines regulation stiffness against load current variation |
| Reverse Current | ≤1.0 µA at VR = 1.0 V - guarantees minimal standby power loss in always-on circuits |
| Forward Voltage | ≤0.9 V at IF = 10 mA - supports reliable anode-cathode conduction during forward testing or ESD clamping |
| Total Power Dissipation | 300 mW max at Tamb ≤ 25 °C - sets thermal derating boundary for PCB layout and ambient design |
| Junction Temperature | −55 °C to +150 °C - enables operation in industrial and extended-temperature environments |
Pinout & Package
Package: SOD323 (SC-76), surface-mounted plastic case measuring 1.7 mm × 1.25 mm × 0.95 mm, with 1.3 mm lead pitch and cathode marked by a bar on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; polarity marker (bar) aligns with this terminal |
| 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 µA-level bias chains without compromising regulation accuracy |
| Optimized Leakage Profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise and improves transient settling in reference paths |
| Small-Signal Thermal Performance | Rth(j-a) = 415 K/W - allows accurate thermal modeling for reliability prediction in compact layouts |
| Standardized SMD Footprint | SOD323 outline with IPC-compliant reflow/wave solder lands - ensures manufacturability across contract assembly lines |
Applications
| IoT Sensor Node Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 2.0 V reference to analog front-end of battery-powered environmental sensor. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precision threshold for ADC input scaling and LDO enable logic. Use Value: Enables <1 µA total system standby current while maintaining ±2 % reference accuracy over −40 °C to +85 °C. |
Use Scenario: Generating clean, temperature-stable reset signal for ARM Cortex-M0+ MCU during cold start. IC Role / Device Role / Timing Role: Zener clamp defining logic-high threshold for external reset supervisor IC input. Use Value: Delivers 2.0 V ±2 % at 50 µA, eliminating need for external resistor divider and reducing BOM count by one component. |
| Wearable Device Power Sequencing | Low-Power RF Transceiver Reference |
Use Scenario: Supplying regulated bias to MEMS oscillator enable circuit in hearable device. IC Role / Device Role / Timing Role: Voltage reference for enabling/disabling ultra-low-power clock source during sleep/wake transitions. Use Value: Maintains 2.0 V regulation with <1 µA leakage at VR = 1.0 V, preventing unintended wake-up from supply droop. |
Use Scenario: Setting local oscillator tuning voltage in sub-GHz ISM band transceiver module. IC Role / Device Role / Timing Role: Low-noise DC reference for varactor diode bias network in VCO control loop. Use Value: Optimized leakage profile minimizes phase noise contribution, supporting <−120 dBc/Hz @ 100 kHz offset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-current Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V0 | Same 2.0 V nominal, ±2 % tolerance, but higher rdiff (1000 Ω max at 5 mA) and no optimized leakage profile | Lacks AN90031 noise-reduction tuning; suitable only where ultra-low noise is not required | Select when cost sensitivity outweighs noise performance and thermal stability requirements |
| MMSZ4678T1G | 2.0 V nominal, ±5 % tolerance, 1500 Ω rdiff, rated for 500 mW - larger SOD-123 package | Higher power rating but looser tolerance and inferior low-current regulation stability | Choose only if board space allows SOD-123 and ±5 % accuracy is acceptable for the application |
Compared with BZX38450-C2V0F, the BZX384-B2V0 trades noise performance for legacy compatibility, while MMSZ4678T1G sacrifices precision and size for higher power handling - making BZX38450-C2V0F the optimal choice for miniaturized, low-noise, battery-critical designs.
Availability
BZX38450-C2V0F is available at Aetrix Electronics and suitable for IoT sensor nodes, wearable power sequencing, and microcontroller reset circuits requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX38450-C2V0F 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 automotive-qualified and energy-efficient components.
BZX38450 belongs to Nexperia's low-current Zener regulator family, engineered specifically for precision voltage referencing in battery-constrained, space-limited applications such as wearables and wireless sensors.
FAQ
What is the maximum reverse voltage before breakdown for BZX38450-C2V0F?
The device is rated for nominal 2.0 V Zener voltage at 50 µA test current, with guaranteed breakdown between 1.88 V and 2.12 V. Absolute maximum reverse voltage is not defined; operation beyond the specified VZ range risks uncontrolled conduction or thermal runaway due to insufficient power derating.
Can BZX38450-C2V0F be used in forward-bias mode as a standard diode?
Yes - it exhibits ≤0.9 V forward voltage at 10 mA, consistent with silicon PN junction behavior. However, its primary design intent is reverse-bias regulation; forward conduction is characterized only for test and ESD protection verification, not for rectification duty.
How does the "C" suffix differ from "B" in the BZX38450 series?
The "C" suffix denotes tighter ±2 % tolerance and inclusion of the AN90031 leakage optimization for noise reduction and fast switching. "B" parts offer ±5 % tolerance and standard leakage, making "C" variants preferred for precision reference and low-noise analog applications.
Is BZX38450-C2V0F suitable for automotive applications?
No - this part is not AEC-Q200 qualified. Nexperia explicitly states in the legal disclaimers that non-automotive qualified products like BZX38450-C2V0F are unsuitable for safety-critical or life-support systems, including automotive ECUs, ADAS modules, or infotainment power rails.
BZX38450-C2V0F 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 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 7 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-C2V0F FAQ
1.How can I place an order for BZX38450-C2V0F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C2V0F 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-C2V0F reliable?
The price and inventory of BZX38450-C2V0F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C2V0F is usually 5 days.
3.What payment methods are accepted for BZX38450-C2V0F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C2V0F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C2V0F?
BZX38450-C2V0F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C2V0F 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-C2V0F?
For technical support, including BZX38450-C2V0F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C2V0F requirements.
6.How does Aetrix verify that BZX38450-C2V0F is sourced from the original manufacturer or authorized distributors?
All BZX38450-C2V0F 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-C2V0F meets industry standards.
7.What is the process for return or replacement of BZX38450-C2V0F?
All BZX38450-C2V0F units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C2V0F, 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-C2V0F part is unused and in its original packaging.
Return procedure for BZX38450-C2V0F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C2V0F 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
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