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Nexperia USA Inc. BZX38450-C6V8F
- Part No.:
- BZX38450-C6V8F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C6V8F.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,515
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Product details
Overview
BZX38450-C6V8F 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 6.8 V regulation at 50 µA test current, with ±2 % tolerance, 80 Ω differential resistance at 5 mA, and 1.2 mV/K temperature coefficient - enabling stable operation in battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the BZX38450-C6V8F datasheet, BZX38450-C6V8F pinout, BZX38450-C6V8F application, or BZX38450-C6V8F equivalent, key selection criteria include low-test-current regulation accuracy, thermal stability in SMT-constrained layouts, leakage-sensitive reverse-bias behavior, and compatibility with FR4 PCB thermal profiles under 25 °C ambient.
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 6.46 V to 7.14 V working voltage range (min/max at 25 °C) and 0.1 µA max reverse current at VR = 5.1 V ensure high impedance stability during standby.
The device features intentional minor leakage rise per AN90031 to suppress switching noise and improve transient response in analog front-ends. Thermal resistance from junction to solder point is 110 K/W, supporting reliable operation up to 150 °C junction temperature when mounted on standard FR4 with tin-plated copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.8 V at IZ = 50 µA - enables accurate low-bias reference generation without loading weak sources |
| Voltage Tolerance | ±2 % (C-series) - ensures tight regulation across production batches for calibrated measurement circuits |
| Differential Resistance | 80 Ω at IZ = 5 mA - limits output impedance drift under small-signal load variations |
| Temperature Coefficient | +1.2 mV/K - provides predictable, low-drift voltage shift over industrial temperature range |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - minimizes conduction loss when used bidirectionally or as clamp |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C - supports continuous operation in compact SOD323 footprint without forced cooling |
| Reverse Leakage | ≤ 0.1 µA at VR = 5.1 V - preserves battery life in multi-year IoT endpoint deployments |
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 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - eliminates need for external bias resistors in microamp-level systems |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise in precision ADC references |
| Thermal performance | Rth(j-sp) = 110 K/W - enables direct thermal coupling to PCB copper for passive dissipation |
| Compact SMT footprint | SOD323 outline with 1.3 mm pitch - fits high-density layouts where space is constrained below 2 mm² |
Applications
| Portable Gas Sensor Calibration | Wearable ECG Front-End Bias |
|---|---|
Use Scenario: Battery-powered electrochemical gas detector requiring stable 6.8 V reference for analog signal conditioning over 10-year field life. IC Role / Device Role / Timing Role: Zener voltage reference providing excitation voltage to sensor bridge and offset calibration for op-amp input stage. Use Value: ±2 % tolerance and 0.1 µA leakage ensure <0.5 % full-scale error drift over shelf life without periodic recalibration. |
Use Scenario: Ultra-low-power wearable heart-rate monitor operating from coin-cell battery with 3.0 V nominal supply. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator generating clean 6.8 V rail for instrumentation amplifier bias and ADC reference buffer. Use Value: 50 µA test current and 80 Ω dynamic impedance maintain <10 ppm/°C effective reference stability across −20 °C to +70 °C. |
| IoT Node Power Sequencing | Industrial Temperature Transmitter |
Use Scenario: Sub-GHz wireless sensor node with MCU, RF transceiver, and analog sensor interface sharing single Li-SOCl₂ cell. IC Role / Device Role / Timing Role: Voltage clamp and soft-start reference for LDO enable circuitry during cold-start power-up. Use Value: Fast turn-on at low IZ and controlled leakage prevent brown-out during wake-from-sleep transitions. |
Use Scenario: Two-wire 4–20 mA loop-powered temperature transmitter housed in DIN-rail enclosure with ambient up to 85 °C. IC Role / Device Role / Timing Role: Precision Zener reference for DAC output scaling and current-loop compliance voltage setting. Use Value: +1.2 mV/K tempco and Rth(j-sp) = 110 K/W allow direct PCB thermal anchoring to heatsink plane, reducing system-level calibration burden. |
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-B6V8 | ±5 % tolerance, higher rdiff (160 Ω), no intentional leakage optimization | Acceptable for non-critical biasing where cost sensitivity outweighs precision | Select only if ±5 % regulation error is acceptable and noise immunity is not required |
| MMSZ4687 | Same 6.8 V nominal, but ±5 % tolerance and 100 Ω rdiff; rated for 500 mW, larger SOD-123 package | Higher power handling suits higher-current reference buffers, but footprint incompatible with SOD323 layouts | Choose only when board space allows SOD-123 and thermal margin exceeds 300 mW requirement |
Compared with BZX38450-C6V8F, the BZX384-B6V8 sacrifices regulation accuracy and noise performance for cost, while MMSZ4687 trades miniaturization for thermal headroom - making the C6V8F optimal for space-constrained, low-leakage, precision-referenced designs.
Availability
BZX38450-C6V8F is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, and battery-backed IoT edge nodes requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX38450-C6V8F 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 solutions with focus on efficiency and miniaturization.
The BZX38450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for voltage reference and biasing in energy-constrained, high-stability analog systems.
FAQ
What is the maximum reverse voltage that can be safely applied before breakdown?
The BZX38450-C6V8F has a nominal Zener voltage of 6.8 V, with guaranteed breakdown occurring between 6.46 V and 7.14 V at 50 µA. Applying reverse voltage below 6.46 V keeps the device in high-impedance blocking state; exceeding 7.14 V risks uncontrolled conduction unless current-limited to ≤250 mA per absolute maximum ratings.
How does the "C" suffix differ from "B" in the BZX38450 series?
The "C" suffix denotes ±2 % voltage tolerance and optimized leakage characteristics per AN90031, whereas "B" indicates ±5 % tolerance and standard leakage. For BZX38450-C6V8F, this means tighter regulation (6.46–7.14 V vs. 6.66–6.94 V for B6V8) and purposefully elevated leakage for improved noise suppression in analog signal paths.
Can this Zener diode be used in forward-bias mode as a regular rectifier?
No - the BZX38450-C6V8F is optimized for reverse-bias Zener operation. While its forward voltage is ≤0.9 V at 10 mA, it lacks the surge current rating, reverse recovery time specification, and reliability validation required for rectification. Use dedicated Schottky or signal diodes like PMEG series for forward conduction roles.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes - the SOD323 package is qualified for lead-free reflow per JEDEC J-STD-020. Recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s. Figure 10 in the datasheet provides the exact solder land pattern (0.6 mm × 1.1 mm pads, 1.35 mm center-to-center) for reliable attachment on FR4 PCBs.
BZX38450-C6V8F 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):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5.1 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-C6V8F FAQ
1.How can I place an order for BZX38450-C6V8F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C6V8F 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-C6V8F reliable?
The price and inventory of BZX38450-C6V8F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C6V8F is usually 5 days.
3.What payment methods are accepted for BZX38450-C6V8F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C6V8F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C6V8F?
BZX38450-C6V8F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C6V8F 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-C6V8F?
For technical support, including BZX38450-C6V8F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C6V8F requirements.
6.How does Aetrix verify that BZX38450-C6V8F is sourced from the original manufacturer or authorized distributors?
All BZX38450-C6V8F 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-C6V8F meets industry standards.
7.What is the process for return or replacement of BZX38450-C6V8F?
All BZX38450-C6V8F units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C6V8F, 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-C6V8F part is unused and in its original packaging.
Return procedure for BZX38450-C6V8F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C6V8F Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
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
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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