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Nexperia USA Inc. BZX38450-C2V7X
- Part No.:
- BZX38450-C2V7X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C2V7X.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,530
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Product details
Overview
BZX38450-C2V7X 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 2.7 V regulation at 50 µA test current, with ±2 % tolerance, 600 Ω dynamic resistance at 1 mA, and 1.0 µA max reverse leakage at 2.0 V, enabling stable operation in portable battery-powered sensor nodes and IoT endpoint regulators.
For engineers reviewing the BZX38450-C2V7X datasheet, BZX38450-C2V7X pinout, BZX38450-C2V7X application, or BZX38450-C2V7X equivalent, this page provides verified electrical characteristics, thermal behavior, SOD323 footprint details, and validated alternative parts for low-current voltage reference design.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - optimized for minimal quiescent current draw in always-on monitoring circuits. Its differential resistance remains ≤600 Ω up to 1 mA, ensuring predictable voltage stability under light load variation.
The device exhibits a negative temperature coefficient of −3.5 mV/K and junction-to-ambient thermal resistance of 415 K/W on FR4 PCB, making it suitable for ambient-stable references where self-heating must be minimized below 300 mW total dissipation limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.7 V at IZ = 50 µA - defines precise reference point for low-bias analog circuitry |
| Tolerance | ±2 % - ensures tight voltage accuracy without post-calibration in production |
| Differential Resistance | ≤600 Ω at IZ = 1 mA - limits output voltage shift under small load changes |
| Reverse Leakage Current | ≤1.0 µA at VR = 2.0 V - preserves battery life in multi-year coin-cell applications |
| Forward Voltage | ≤0.9 V at IF = 10 mA - enables use as low-drop clamp or protection element |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets maximum continuous power handling on standard FR4 |
| Junction Temperature Limit | 150 °C - defines absolute thermal ceiling before irreversible degradation |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic case measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch. Cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive terminal for reverse-bias operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | Regulated at 50 µA - reduces standby current in energy-harvesting and wake-on-event systems |
| Controlled leakage profile | Intentional minor rise in IR for C-series - improves switching speed and noise immunity in feedback paths |
| Thermal performance | Rth(j-a) = 415 K/W - allows accurate derating for ambient temperatures up to +85 °C |
| Small-footprint packaging | SOD323 outline - supports high-density PCB layouts in space-constrained wearables and modules |
Applications
| Portable Sensor Biasing | IoT Endpoint Reference |
|---|---|
Use Scenario: Providing stable 2.7 V reference for MEMS accelerometer ADC input in BLE-enabled environmental sensor node. IC Role / Device Role / Timing Role: Zener voltage reference source for analog front-end signal conditioning. Use Value: Enables <1 µA quiescent current in sleep mode while maintaining ±0.5 % reference accuracy across −40 °C to +85 °C. |
Use Scenario: Setting threshold voltage for low-power comparator monitoring battery voltage in smart lock MCU subsystem. IC Role / Device Role / Timing Role: Precision shunt reference for over/under-voltage detection circuit. Use Value: Delivers repeatable 2.7 V trip point with <1.0 µA leakage, extending coin-cell lifetime beyond 5 years. |
| Wearable Health Monitor | Industrial Data Logger |
Use Scenario: Supplying regulated bias to optical heart-rate sensor photodiode amplifier in wrist-worn fitness tracker. IC Role / Device Role / Timing Role: Low-noise DC reference for transimpedance amplifier offset setting. Use Value: Minimizes baseline drift via −3.5 mV/K tempco and 600 Ω rdiff, improving SNR in sub-µA signal chains. |
Use Scenario: Generating stable reference for 12-bit SAR ADC sampling thermocouple signals in remote field transmitter. IC Role / Device Role / Timing Role: Shunt voltage reference for ratiometric measurement calibration. Use Value: Maintains ±2 % regulation accuracy across 10–100 µA load range, eliminating need for external trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-current Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V7 | Same 2.7 V nominal, ±5 % tolerance, higher rdiff (≤1000 Ω), no intentional leakage optimization | Acceptable where tighter voltage accuracy is not required and cost sensitivity dominates | Select when budget constraints outweigh need for ±2 % tolerance or fast-switching response |
| MMSZ4684T1G | 2.7 V nominal, ±5 %, 1500 Ω rdiff, SOD-123 package (larger footprint, 2.7 mm × 1.6 mm) | Compatible in board-level redesigns accepting larger area; less suitable for ultra-dense layouts | Choose only if existing SOD-123 footprint is fixed and thermal margin exceeds 415 K/W requirement |
Compared with BZX38450-C2V7X, BZX384-B2V7 trades accuracy for cost, while MMSZ4684T1G sacrifices miniaturization and dynamic performance for broader distributor availability - neither matches its combination of ±2 % tolerance, SOD323 size, and optimized leakage behavior.
Availability
BZX38450-C2V7X is available at Aetrix Electronics and suitable for portable sensor biasing, IoT endpoint reference, and wearable health monitor designs requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX38450-C2V7X 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-grade and industrial-standard components.
BZX38450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for battery-critical and space-constrained applications demanding tight voltage tolerance and ultra-low standby current.
FAQ
What is the maximum reverse voltage that can be safely applied before breakdown?
The BZX38450-C2V7X has a nominal Zener voltage of 2.7 V at 50 µA, with a guaranteed working range of 2.565 V to 2.835 V (±2 %). It begins regulating in reverse breakdown above ~2.5 V; applying >2.835 V continuously is permissible within its 300 mW power limit and thermal constraints, but exceeding 40 W non-repetitive surge rating risks damage.
Can this diode be used in forward-biased configuration?
Yes - its forward voltage is specified ≤0.9 V at 10 mA, making it usable as a low-drop clamping or protection diode. However, its primary design intent and characterization are for reverse-bias Zener operation; forward conduction parameters are secondary and not optimized for rectification or switching duty.
How does the "C" suffix differ from "B" in the BZX38450 series?
The "C" suffix denotes tighter ±2 % voltage tolerance and an intentionally modified leakage profile per AN90031 - enabling faster transient response and reduced noise in feedback loops. "B" parts offer ±5 % tolerance and standard leakage, targeting cost-sensitive general-purpose regulation where precision is secondary.
Is thermal derating required above 25 °C ambient?
Yes - with Rth(j-a) = 415 K/W, power dissipation must be linearly reduced above 25 °C. At 85 °C ambient, maximum allowable Ptot drops to ~140 mW to maintain Tj ≤ 150 °C. Derating curves are defined in Table 9 and Figure 1 of the datasheet for pulse and continuous conditions.
BZX38450-C2V7X 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):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 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-C2V7X FAQ
1.How can I place an order for BZX38450-C2V7X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C2V7X 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-C2V7X reliable?
The price and inventory of BZX38450-C2V7X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C2V7X is usually 5 days.
3.What payment methods are accepted for BZX38450-C2V7X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C2V7X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C2V7X?
BZX38450-C2V7X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C2V7X 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-C2V7X?
For technical support, including BZX38450-C2V7X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C2V7X requirements.
6.How does Aetrix verify that BZX38450-C2V7X is sourced from the original manufacturer or authorized distributors?
All BZX38450-C2V7X 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-C2V7X meets industry standards.
7.What is the process for return or replacement of BZX38450-C2V7X?
All BZX38450-C2V7X units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C2V7X, 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-C2V7X part is unused and in its original packaging.
Return procedure for BZX38450-C2V7X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C2V7X Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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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
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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