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Nexperia USA Inc. BZX8450-C7V5VL
- Part No.:
- BZX8450-C7V5VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C7V5VL.pdf
- Description:
- DIODE ZENER 7.5V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,397
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Product details
Overview
BZX8450-C7V5VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and clamping in portable electronics. It delivers 7.5 V nominal regulation at 50 µA test current, with ±5 % tolerance, 80 Ω differential resistance at 5 mA, and 2.5 mV/K temperature coefficient. Used in battery-powered sensor biasing and microcontroller reset circuitry.
For engineers reviewing the BZX8450-C7V5VL datasheet, BZX8450-C7V5VL pinout, BZX8450-C7V5VL application, or BZX8450-C7V5VL equivalent, key selection criteria include low-test-current regulation stability, SOT23 thermal resistance (Rth(j-sp) = 330 K/W), leakage optimization per AN90031, and compatibility with FR4 PCB layouts using standard reflow footprints.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - enabling ultra-low quiescent current design in energy-constrained systems. Its intentional minor leakage rise (per AN90031) reduces switching noise and improves transient response versus standard Zeners.
Thermal performance is defined for FR4 PCB mounting: Rth(j-a) = 500 K/W (free air), Rth(j-sp) = 330 K/W (solder point), supporting reliable operation up to Tamb = +150 °C. The device exhibits 150 pF capacitance at VR = 0 V and f = 1 MHz, suitable for low-frequency stabilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 7.5 V at IZ = 50 µA - defines stable reference point for low-bias circuits |
| Tolerance | ±5 % - supports cost-optimized designs where tight regulation isn't critical |
| Differential Resistance | 80 Ω at IZ = 5 mA - determines output impedance and load regulation error |
| Temperature Coefficient | +2.5 mV/K - enables predictable drift compensation in ambient-varying environments |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - ensures minimal drop in series bias configurations |
| Max Power Dissipation | 250 mW at Tamb ≤ 25 °C - sets safe operating area for continuous DC regulation |
| Reverse Current | ≤ 0.1 µA at VR = 5.7 V - confirms low leakage for standby power integrity |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), optimized for automated assembly and thermal transfer via cathode solder point.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node; reverse-biased during regulation |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating on PCB layout |
| 3 | Cathode (K) | Primary heat path to PCB; ties to regulated voltage rail or ground return |
Key Features
| Feature | Design Value |
|---|---|
| Low test current regulation | Specified at 50 µA - enables use in nanoampere-bias sensor interfaces and RTC backup circuits |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise and improves switching transients |
| SOT23 thermal performance | Rth(j-sp) = 330 K/W - allows >100 mW dissipation under typical PCB copper conditions |
| Stable low-voltage reference | VZ = 7.5 V ±5 % with +2.5 mV/K TC - supports accurate ADC reference scaling in 3.3 V/5 V systems |
Applications
| Microcontroller Reset Circuit | Portable Sensor Biasing |
|---|---|
Use Scenario: Provides clean, low-drift reset threshold for ARM Cortex-M MCUs in handheld medical devices. IC Role / Device Role / Timing Role: Zener clamp establishing precise 7.5 V trigger level for external reset supervisor IC. Use Value: Enables deterministic reset assertion across −40 °C to +85 °C with <±1 % total drift due to matched TC and low rdiff. |
Use Scenario: Supplies stable bias voltage to MEMS accelerometer analog front-end in Bluetooth LE wearables. IC Role / Device Role / Timing Role: Low-current voltage reference replacing higher-power LDO in signal chain power tree. Use Value: Reduces quiescent current by 85 % vs. LDO-based bias, extending coin-cell battery life to >12 months. |
| USB-C Port Protection Clamp | Industrial Signal Conditioning |
Use Scenario: Clamps transient overvoltage on USB-C CC line during hot-plug events in embedded docking stations. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting CC line to 7.5 V during ESD or surge. Use Value: Achieves <10 ns response with 150 pF capacitance, preventing false enumeration without adding series resistance. |
Use Scenario: Stabilizes excitation voltage for 4–20 mA loop-powered pressure transmitters in factory automation. IC Role / Device Role / Timing Role: Precision Zener reference for op-amp feedback network in current-loop DAC stage. Use Value: Maintains <0.5 % full-scale error over 0–70 °C due to low rdiff and predictable TC compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same 7.5 V ±5 % spec but higher rdiff (100 Ω), no AN90031 leakage optimization | Lacks fast-switching noise reduction; less suitable for high-precision analog sensing | Prefer when lowest-cost Zener suffices and noise sensitivity is negligible |
| MMSZ5236B | 7.5 V ±5 %, 100 Ω rdiff, 350 mW Ptot, SOD-123 package (larger footprint) | Higher power rating but 2× larger board area; no intentional leakage tuning | Choose only if >250 mW dissipation or legacy SOD-123 layout compatibility is required |
Compared with BZX8450-C7V5VL, BZX84-C7V5 trades noise performance for cost, while MMSZ5236B sacrifices miniaturization for thermal headroom - making the BZX8450-C7V5VL optimal for space-constrained, low-noise, battery-critical designs.
Availability
BZX8450-C7V5VL is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, USB interface protection, and battery management systems requiring stable component supply with consistent parametric performance across production lots.
Supply support for BZX8450-C7V5VL 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 components, with leadership in automotive-qualified and industrial-grade small-signal devices.
The BZX8450 series belongs to Nexperia's low-current Zener portfolio, engineered specifically for ultra-low-power voltage reference and clamping in portable, battery-operated, and space-constrained electronics.
FAQ
What is the maximum reverse current at 7.5 V for BZX8450-C7V5VL?
At VR = 5.7 V (76 % of nominal VZ), the maximum reverse current is 0.1 µA per datasheet Table 8. At exactly 7.5 V, the device is in breakdown - reverse current rises sharply beyond this point, with typical IZ = 50 µA defining the regulation knee. Do not operate continuously at VR ≥ VZ without current limiting.
Can BZX8450-C7V5VL be used in place of a 7.5 V linear regulator?
No - it is a two-terminal Zener diode, not a three-terminal regulator. It requires an external series resistor to set operating current and cannot source load current directly. It functions as a shunt reference or clamp, not a pass-element regulator. For active regulation, pair it with a transistor or use a dedicated LDO.
Is pin 2 truly unconnected, or does it serve a thermal function?
Pin 2 is electrically and physically unconnected (n.c.), confirmed in Table 2 and Figure 9. It has no internal bond wire or die connection. Thermal transfer occurs exclusively through pins 1 (anode) and 3 (cathode), with cathode (pin 3) being the primary thermal path per Rth(j-sp) specification.
Does the "VL" suffix indicate a specific tape-and-reel packaging variant?
Yes - "VL" denotes the 3,000-piece 8 mm tape-and-reel format per Nexperia's ordering convention (e.g., BZX8450-C7V5VL = SOT23, ±5 %, 7.5 V, 3k/reel). This differs from "VLX" (10 k/reel) or "VLC" (cut tape), and ensures compatibility with standard pick-and-place feeders.
BZX8450-C7V5VL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8450
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 250 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:
- TO-236AB
BZX8450-C7V5VL FAQ
1.How can I place an order for BZX8450-C7V5VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C7V5VL 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 BZX8450-C7V5VL reliable?
The price and inventory of BZX8450-C7V5VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C7V5VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C7V5VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C7V5VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C7V5VL?
BZX8450-C7V5VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C7V5VL 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 BZX8450-C7V5VL?
For technical support, including BZX8450-C7V5VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C7V5VL requirements.
6.How does Aetrix verify that BZX8450-C7V5VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C7V5VL 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 BZX8450-C7V5VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C7V5VL?
All BZX8450-C7V5VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C7V5VL, 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 BZX8450-C7V5VL part is unused and in its original packaging.
Return procedure for BZX8450-C7V5VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C7V5VL 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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