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Nexperia USA Inc. BZX8450-C9V1VL
- Part No.:
- BZX8450-C9V1VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C9V1VL.pdf
- Description:
- DIODE ZENER 9.1V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,991
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Product details
Overview
BZX8450-C9V1VL from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in portable electronics. It delivers 9.1 V nominal regulation at 50 µA test current, with ±5 % tolerance, 100 Ω differential resistance at 5 mA, and 7.0 mV/K temperature coefficient - enabling stable operation in battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZX8450-C9V1VL datasheet, BZX8450-C9V1VL pinout, BZX8450-C9V1VL application, or BZX8450-C9V1VL equivalent, key selection criteria include low-test-current regulation accuracy, SOT23 footprint compatibility, thermal resistance (Rth(j-a) = 500 K/W), 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 - ideal for ultra-low-power bias networks where quiescent current must remain below 100 µA. Its 9.1 V nominal voltage falls within the C-series tolerance band (8.65 V to 9.56 V), and its 7.0 mV/K temperature coefficient ensures predictable drift across −55 °C to +150 °C ambient range.
The device features a non-connected (n.c.) terminal (Pin 2) to enable layout flexibility in high-density PCBs, while Pin 1 (anode) and Pin 3 (cathode) define unidirectional conduction. Thermal performance is characterized with Rth(j-sp) = 330 K/W to cathode solder point, supporting reliable operation under pulsed power conditions up to 40 W (100 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 9.1 V at IZ = 50 µA - enables accurate low-bias voltage reference for MCU brown-out detection |
| Tolerance | ±5 % (C-series) - supports cost-optimized designs where tight regulation is secondary to low leakage |
| Differential Resistance | 100 Ω at IZ = 5 mA - limits output impedance in feedback paths of LDO pre-regulators |
| Temperature Coefficient | +7.0 mV/K - provides predictable positive drift for compensation in temperature-stable references |
| Forward Voltage | ≤ 0.9 V at IF = 10 mA - ensures minimal drop in series-connected protection or clamping configurations |
| Total Power Dissipation | 250 mW at Tamb ≤ 25 °C - defines maximum continuous DC power in FR4 PCB mounting |
| Junction Temperature Limit | 150 °C - sets thermal derating boundary for sustained operation in enclosed industrial enclosures |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pitch); 3-terminal configuration with exposed cathode tab for thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Reverse-biased input node - connects to regulated rail or voltage divider top node |
| 2 | Not Connected (n.c.) | No internal connection - allows routing clearance or grounding for EMI suppression without shorting |
| 3 | Cathode (K) | Reference output node - ties to ground or feedback network; primary thermal path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| Low test current regulation | Specified at 50 µA - reduces standby current in always-on IoT sensor power domains |
| Optimized leakage profile | Intentional minor rise per AN90031 - improves switching speed and reduces broadband noise in ADC reference buffers |
| Thermal resistance control | Rth(j-sp) = 330 K/W to cathode solder point - enables predictable derating in thermally constrained modules |
| Small-outline packaging | SOT23 footprint - supports automated placement in space-constrained wearables and medical patches |
| Wide operating temperature | −55 °C to +150 °C ambient - qualifies for extended-range industrial control and automotive under-hood auxiliary circuits |
Applications
| Microcontroller Reset Circuit | Portable Sensor Bias Network |
|---|---|
Use Scenario: Provides clean, low-drift reset threshold for ARM Cortex-M0+ microcontrollers in battery-powered asset trackers. IC Role / Device Role / Timing Role: Zener reference element in RC-based reset generator - sets precise 9.1 V trip point before regulator undervoltage lockout. Use Value: ±5 % tolerance and +7.0 mV/K TC ensure reset assertion remains within 200 ms window across −25 °C to +70 °C operating range. |
Use Scenario: Supplies stable bias voltage to MEMS pressure sensor amplifier in handheld diagnostic tools. IC Role / Device Role / Timing Role: Low-current voltage reference - replaces larger TL431-based solutions where <100 µA quiescent draw is mandatory. Use Value: 50 µA test current specification enables direct use with high-impedance op-amp inputs, eliminating buffer stages. |
| USB-C Power Negotiation Reference | Industrial PLC Analog Input Protection |
Use Scenario: Generates fixed 9.1 V reference for USB PD sink controller voltage monitoring during CC line negotiation. IC Role / Device Role / Timing Role: Precision shunt reference - feeds comparator input that validates VBUS presence prior to PDO selection. Use Value: 100 Ω dynamic impedance minimizes error propagation into comparator hysteresis thresholds during transient load steps. |
Use Scenario: Clamps overvoltage transients on 4–20 mA loop input channels in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Secondary shunt protector - placed after primary TVS to limit clamping energy delivered to precision instrumentation amplifier. Use Value: Non-connected Pin 2 isolates cathode thermal path from adjacent signal traces, preventing thermal crosstalk in multi-channel modules. |
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-C9V1,115 (Nexperia) | Same 9.1 V/C-series spec, but no n.c. pin - Pin 2 internally connected to cathode | Lacks layout flexibility for isolated cathode thermal management | Prefer BZX8450-C9V1VL when board-level thermal isolation of cathode is required |
| MMSZ5240B-TP (Micro Commercial) | 9.1 V ±5 %, but higher rdiff = 120 Ω at 20 mA and no intentional leakage optimization | Higher noise floor in precision analog references; not validated per AN90031 | Acceptable only in non-critical biasing where 100 µA leakage is tolerable |
Compared with BZX84-C9V1,115, BZX8450-C9V1VL offers superior thermal decoupling via n.c. Pin 2; versus MMSZ5240B-TP, it delivers lower noise and tighter dynamic impedance control at low currents - critical for battery-operated measurement systems.
Availability
BZX8450-C9V1VL is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, and USB-C power interface circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX8450-C9V1VL 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 essential efficiency technologies - delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
BZX8450 belongs to Nexperia's low-current Zener regulator family, engineered specifically for ultra-low-power voltage referencing in battery-constrained and noise-sensitive applications - not general-purpose regulation.
FAQ
What is the maximum continuous reverse current this diode can sustain without degradation?
The BZX8450-C9V1VL has an absolute maximum forward current of 200 mA, but for Zener operation, the limiting factor is power dissipation. At 25 °C ambient on FR4 PCB, it sustains ≤250 mW continuously - corresponding to ~27.5 mA at 9.1 V. Derating applies above 25 °C per Rth(j-a) = 500 K/W.
Does Pin 2 (n.c.) require PCB pad removal or floating layout treatment?
No - Pin 2 is internally unconnected and may be left as a standard SOT23 pad. It does not require removal, grounding, or isolation; however, leaving it unconnected avoids unintended thermal coupling to adjacent traces, preserving cathode-side thermal performance.
How does the "intentional minor rise of leakage current" affect circuit stability?
Per AN90031, the controlled leakage increase reduces junction capacitance variation during switching transitions, lowering broadband noise injection into adjacent analog circuits - particularly beneficial in ADC reference buffers and RF front-end bias networks where PSRR matters.
Can this Zener be used in series with another to achieve higher reference voltages?
Yes - cascading multiple BZX8450-C9V1VL units yields scalable reference voltages (e.g., two in series = ~18.2 V), but total power dissipation must stay within 250 mW per device, and temperature coefficients will compound linearly (+14 mV/K), requiring recalibration in wide-temperature applications.
BZX8450-C9V1VL 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):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.9 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-C9V1VL FAQ
1.How can I place an order for BZX8450-C9V1VL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C9V1VL 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-C9V1VL reliable?
The price and inventory of BZX8450-C9V1VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C9V1VL is usually 5 days.
3.What payment methods are accepted for BZX8450-C9V1VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C9V1VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C9V1VL?
BZX8450-C9V1VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C9V1VL 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-C9V1VL?
For technical support, including BZX8450-C9V1VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C9V1VL requirements.
6.How does Aetrix verify that BZX8450-C9V1VL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C9V1VL 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-C9V1VL meets industry standards.
7.What is the process for return or replacement of BZX8450-C9V1VL?
All BZX8450-C9V1VL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C9V1VL, 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-C9V1VL part is unused and in its original packaging.
Return procedure for BZX8450-C9V1VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C9V1VL 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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