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Nexperia USA Inc. BZX38450-C3V6F
- Part No.:
- BZX38450-C3V6F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C3V6F.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:36,813
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Product details
Overview
BZX38450-C3V6F 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 3.6 V regulation at 50 µA test current, with ±2 % tolerance, 95 Ω dynamic resistance at 5 mA, and 2.0 µA max reverse leakage at VR = 3.6 V - ideal for battery-powered sensor nodes and portable IoT endpoints.
For engineers reviewing the BZX38450-C3V6F datasheet, BZX38450-C3V6F pinout, BZX38450-C3V6F application, or BZX38450-C3V6F equivalent, key selection criteria include low-test-current regulation stability, thermal resistance (Rth(j-a) = 415 K/W), SOD323 footprint compatibility, and intentional leakage optimization for noise-sensitive analog front-ends.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - enabling stable reference generation under microamp-level bias conditions. Its differential resistance of 95 Ω at 5 mA ensures minimal voltage deviation across load variations typical in signal conditioning and ADC reference circuits.
The device features a temperature coefficient of −3.5 mV/K and junction-to-ambient thermal resistance of 415 K/W on FR4 PCB, supporting operation from −55 °C to +150 °C ambient. The cathode-anode polarity is marked by a bar on the SOD323 body, aligning with standard PCB layout conventions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.6 V at IZ = 50 µA - enables accurate low-current biasing for op-amp references and MCU reset circuits |
| Tolerance | ±2 % - supports tight voltage margining in precision analog subsystems without trimming |
| Differential Resistance | 95 Ω at IZ = 5 mA - limits output impedance drift under small-signal load changes |
| Reverse Leakage Current | ≤ 2.0 µA at VR = 3.6 V - minimizes quiescent power loss in always-on wearable sensors |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - ensures predictable clamping behavior during transient overvoltage events |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - defines maximum steady-state thermal budget on standard FR4 PCB |
| Junction Temperature Limit | 150 °C - sets upper boundary for reliability in sealed industrial enclosures |
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; marking bar identifies this terminal for correct orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | Regulation defined at 50 µA - allows use in nanoamp-level standby circuits without compromising accuracy |
| Optimized leakage profile | Intentional minor rise in IR for C-series devices - reduces switching noise in high-gain amplifier bias networks |
| Thermal performance | Rth(j-sp) = 110 K/W to cathode solder point - supports localized thermal management in dense mixed-signal layouts |
| Package standardization | SOD323 footprint compatible with IPC-7351B Class L - ensures automated assembly yield and rework compatibility |
Applications
| Portable Sensor Biasing | MCU Reset Reference |
|---|---|
Use Scenario: Providing stable 3.6 V reference to analog front-end of BLE temperature sensor node operating on coin-cell battery. IC Role / Device Role / Timing Role: Zener voltage reference for ADC input scaling and op-amp offset nulling. Use Value: 2.0 µA max leakage preserves >10-year battery life; ±2 % tolerance eliminates factory calibration step. |
Use Scenario: Generating precise reset threshold for ultra-low-power microcontroller in smart meter design. IC Role / Device Role / Timing Role: Regulated voltage source feeding comparator input in power-on reset circuit. Use Value: 95 Ω dynamic resistance ensures <10 mV hysteresis variation across temperature, meeting IEC 62053-21 reset timing requirements. |
| IoT Node Voltage Clamp | Industrial Signal Conditioning |
Use Scenario: Clamping 3.3 V supply rail against ESD transients in LoRaWAN end-device RF module. IC Role / Device Role / Timing Role: Low-energy Zener clamp protecting sensitive RF IC inputs during hot-plug events. Use Value: 0.9 V forward voltage enables fast turn-on during positive surges; SOD323 size fits within 2.0 mm² board area budget. |
Use Scenario: Stabilizing excitation voltage for 4–20 mA loop transmitter using precision current source. IC Role / Device Role / Timing Role: Low-drift voltage reference for DAC output buffering stage. Use Value: −3.5 mV/K tempco matches op-amp input offset drift, reducing net system error to <0.05 %FS over −40 to +85 °C. |
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-B3V6 | Same 3.6 V nominal, but ±5 % tolerance and higher rdiff (600 Ω at 5 mA) | Acceptable where cost sensitivity outweighs precision; unsuitable for <0.1 % reference accuracy systems | Select when BOM cost reduction is prioritized over thermal stability and load regulation. |
| MMSZ4685T1G | 3.6 V nominal, ±5 %, 100 Ω rdiff, SOD-123 package (larger footprint, 2.7 mm × 1.6 mm) | Requires PCB redesign due to different pad layout; higher thermal resistance (450 K/W) | Choose only if legacy SOD-123 inventory exists or if higher surge rating (500 mW) is required. |
Compared with BZX38450-C3V6F, the BZX384-B3V6 trades precision for cost, while MMSZ4685T1G offers similar electrical specs but demands larger board area and delivers inferior thermal performance - making the C-series device optimal for space-constrained, high-accuracy, low-power designs.
Availability
BZX38450-C3V6F is available at Aetrix Electronics and suitable for portable sensor biasing, MCU reset reference, and IoT node voltage clamping requiring stable component supply across extended production cycles.
Supply support for BZX38450-C3V6F 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-powered and noise-critical analog applications where regulation stability at microamp bias currents is essential.
FAQ
What is the maximum reverse voltage before breakdown for BZX38450-C3V6F?
The device is rated for nominal 3.6 V Zener voltage at IZ = 50 µA, with guaranteed breakdown occurring between 3.42 V and 3.78 V under those conditions. Absolute maximum reverse voltage is not specified; operation beyond VZ risks irreversible avalanche degradation. The 300 mW power limit constrains safe continuous reverse bias to ~84 mA at 3.6 V.
Can BZX38450-C3V6F be used in forward conduction mode?
Yes - it functions as a standard silicon diode with VF ≤ 0.9 V at IF = 10 mA. However, its primary design intent is reverse-bias regulation; forward characteristics are secondary and not optimized for rectification. Use in forward mode is limited to low-current signal steering or protection clamping, not power conversion.
How does the "C" suffix differ from "B" in the BZX38450 series?
The "C" suffix denotes ±2 % voltage tolerance and an intentional minor increase in reverse leakage current versus "B" (±5 %). This controlled leakage improves high-frequency noise suppression in analog bias networks, as documented in Nexperia application note AN90031 - a feature validated for C1V8 through C51 variants including C3V6F.
Is BZX38450-C3V6F suitable for automotive applications?
No - this part is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling validation, or PPAP documentation. Nexperia explicitly states non-automotive qualification in its legal disclaimers. For automotive use, select Nexperia's automotive-qualified Zener families such as PZTA or BZX84-A series with full AEC-Q200 certification.
BZX38450-C3V6F 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):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 2 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-C3V6F FAQ
1.How can I place an order for BZX38450-C3V6F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C3V6F 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-C3V6F reliable?
The price and inventory of BZX38450-C3V6F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C3V6F is usually 5 days.
3.What payment methods are accepted for BZX38450-C3V6F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C3V6F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C3V6F?
BZX38450-C3V6F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C3V6F 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-C3V6F?
For technical support, including BZX38450-C3V6F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C3V6F requirements.
6.How does Aetrix verify that BZX38450-C3V6F is sourced from the original manufacturer or authorized distributors?
All BZX38450-C3V6F 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-C3V6F meets industry standards.
7.What is the process for return or replacement of BZX38450-C3V6F?
All BZX38450-C3V6F units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C3V6F, 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-C3V6F part is unused and in its original packaging.
Return procedure for BZX38450-C3V6F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C3V6F 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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