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Nexperia USA Inc. BZX38450-C7V5F
- Part No.:
- BZX38450-C7V5F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C7V5F.pdf
- Description:
- DIODE ZENER 7.5V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,885
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Product details
Overview
BZX38450-C7V5F 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 7.5 V regulation at 50 µA test current, with ±2 % tolerance, 80 Ω differential resistance at 5 mA, and 2.5 mV/K temperature coefficient - enabling stable operation in portable battery-powered sensors and IoT node power rails.
For engineers reviewing the BZX38450-C7V5F datasheet, BZX38450-C7V5F pinout, BZX38450-C7V5F application, or BZX38450-C7V5F equivalent, key selection criteria include its 50 µA regulation point, 7.13–7.88 V working voltage range, 300 mW power dissipation limit, and intentional leakage optimization for noise-sensitive analog front-ends.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled VZ characteristics specified at IZ = 50 µA - making it suitable for micropower bias networks where quiescent current must remain below 100 µA. Its differential resistance of 80 Ω at 5 mA ensures minimal output impedance shift across moderate load variations.
The device exhibits a positive temperature coefficient of +2.5 mV/K and diode capacitance of 150 pF at 0 V, supporting stable DC reference generation while maintaining acceptable AC impedance in low-frequency filtering applications up to 1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 7.5 V (range: 7.13 V to 7.88 V at IZ = 50 µA - defines precise DC reference level) |
| Tolerance | ±2 % (B-series grading - enables high-accuracy voltage setting without trimming) |
| Differential Resistance | 80 Ω at IZ = 5 mA (low dynamic impedance ensures minimal output voltage drift under load changes) |
| Test Current | 50 µA (ultra-low regulation current - ideal for battery-critical systems with sub-100 µA standby budgets) |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C (limits thermal rise on standard FR4 PCBs with single-sided copper) |
| Forward Voltage | 0.9 V at IF = 10 mA (enables predictable forward conduction for polarity protection or clamping) |
| Junction Temperature | 150 °C maximum (supports operation in industrial ambient environments up to +125 °C with derating) |
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; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for reverse conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables use in microampere-level bias chains without loading error |
| Optimized leakage profile | Intentional minor leakage rise (per AN90031) reduces switching noise in sensitive analog stages |
| Thermal stability | +2.5 mV/K tempco - minimizes reference drift over −55 °C to +125 °C operating range |
| Small-footprint packaging | SOD323 footprint occupies < 2.2 mm² PCB area - supports high-density portable PCB layouts |
| Robust surge rating | 40 W non-repetitive peak reverse power (100 µs pulse) - withstands transient overvoltage events |
Applications
| Portable Sensor Biasing | IoT Node Voltage Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to MEMS pressure sensors in battery-powered wearables. IC Role / Device Role / Timing Role: Zener regulator supplying fixed 7.5 V bias to sensor bridge circuitry. Use Value: Ultra-low 50 µA test current extends coin-cell life beyond 5 years while maintaining ±0.15 % reference accuracy. |
Use Scenario: Generating clean reference for ADC input scaling in NB-IoT transceivers. IC Role / Device Role / Timing Role: Precision DC reference source for 12-bit SAR ADC reference divider network. Use Value: 80 Ω differential resistance and 150 pF capacitance ensure < 0.5 LSB integral nonlinearity error at 1 kSPS sampling. |
| Low-Power LDO Feedback | ESD-Safe Signal Clamping |
Use Scenario: Setting output voltage of micropower LDOs in medical patch monitors. IC Role / Device Role / Timing Role: External Zener element in feedback divider to override internal bandgap reference. Use Value: ±2 % tolerance eliminates need for external trimming resistors, reducing BOM count by one component. |
Use Scenario: Protecting GPIO pins of ultra-low-power MCUs against ESD and line transients. IC Role / Device Role / Timing Role: Bidirectional clamp using forward-conducting anode and reverse-breakdown cathode. Use Value: 0.9 V forward drop and 7.5 V reverse knee provide symmetric ±0.9 V / −7.5 V clamping window with < 1 ns response. |
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-B7V5 | Same 7.5 V nominal, but ±5 % tolerance and higher rdiff (160 Ω); no intentional leakage optimization | Acceptable where cost sensitivity outweighs precision and noise requirements | Select when budget constraints dominate and ±5 % VZ variation is tolerable in system calibration |
| MMSZ5236B-7-F | 7.5 V nominal, ±5 %, 350 mW Ptot, SOD-123 package (larger footprint), 100 Ω rdiff | Higher power margin but incompatible with space-constrained SOD323 layouts | Choose only if board redesign allows larger 2.7 mm × 1.6 mm footprint and 350 mW thermal budget is required |
Compared with BZX38450-C7V5F, the BZX384-B7V5 sacrifices accuracy and noise performance for lower unit cost, while MMSZ5236B-7-F trades miniaturization for higher power handling - neither matches the combination of ±2 % tolerance, SOD323 size, and 50 µA regulation point.
Availability
BZX38450-C7V5F is available at Aetrix Electronics and suitable for portable sensor biasing, IoT node voltage reference, and low-power LDO feedback requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX38450-C7V5F 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-performance, energy-efficient components for automotive, industrial, and consumer markets - delivering reliable discrete and logic solutions since spin-off from Philips.
BZX38450 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for micropower voltage reference and biasing in battery-constrained edge devices where regulation accuracy and leakage behavior directly impact system runtime and signal integrity.
FAQ
What is the maximum continuous reverse current this diode can handle without degradation?
The BZX38450-C7V5F has no specified maximum continuous reverse current; instead, its safe operating limit is defined by power dissipation. At 7.5 V Zener voltage, the absolute maximum continuous reverse current is 40 mA (300 mW ÷ 7.5 V), assuming ambient temperature ≤ 25 °C and standard FR4 PCB mounting per datasheet condition [2]. Derating applies above 25 °C ambient.
Can this Zener be used in forward-biased configuration as a regular diode?
Yes - the BZX38450-C7V5F exhibits a forward voltage of 0.9 V at 10 mA, matching typical silicon diode behavior. It is routinely used bidirectionally: reverse-biased for voltage regulation and forward-biased for polarity protection or signal clamping, with verified performance up to 250 mA forward current per limiting values table.
How does the "intentional minor rise of leakage current" affect circuit design?
This feature - documented in application note AN90031 - introduces controlled, predictable leakage near the Zener knee to dampen parasitic oscillations and reduce broadband noise in high-impedance reference nodes. It does not compromise regulation accuracy at 50 µA but improves stability in sensitive analog front-ends like instrumentation amplifiers or RF bias networks.
Is this part suitable for automotive applications?
No - the BZX38450-C7V5F is not AEC-Q200 qualified and lacks automotive-grade screening, temperature cycling validation, or guaranteed operation beyond 125 °C junction temperature. Nexperia explicitly states non-automotive qualification in the legal disclaimers; use requires full customer validation for any vehicle-mounted implementation.
BZX38450-C7V5F 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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5.7 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-C7V5F FAQ
1.How can I place an order for BZX38450-C7V5F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C7V5F 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-C7V5F reliable?
The price and inventory of BZX38450-C7V5F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C7V5F is usually 5 days.
3.What payment methods are accepted for BZX38450-C7V5F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C7V5F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C7V5F?
BZX38450-C7V5F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C7V5F 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-C7V5F?
For technical support, including BZX38450-C7V5F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C7V5F requirements.
6.How does Aetrix verify that BZX38450-C7V5F is sourced from the original manufacturer or authorized distributors?
All BZX38450-C7V5F 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-C7V5F meets industry standards.
7.What is the process for return or replacement of BZX38450-C7V5F?
All BZX38450-C7V5F units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C7V5F, 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-C7V5F part is unused and in its original packaging.
Return procedure for BZX38450-C7V5F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C7V5F 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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