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Nexperia USA Inc. BZX8450-C15-QVL
- Part No.:
- BZX8450-C15-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C15-QVL.pdf
- Description:
- DIODE ZENER 15V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,848
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Product details
Overview
BZX8450-C15-Q from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and clamping in battery-powered systems. It delivers a nominal 15 V regulation at 50 µA test current, with ±5 % tolerance, 200 mA maximum forward current, and 250 mW total power dissipation - optimized for automotive sensor biasing and portable MCU supply rail stabilization.
For engineers reviewing the BZX8450-C15-Q datasheet, BZX8450-C15-Q pinout, BZX8450-C15-Q application, or BZX8450-C15-Q equivalent, this page provides verified electrical characteristics, AEC-Q101 qualification status, thermal resistance data (Rth(j-a) = 500 K/W), and direct comparison to functionally aligned Zener alternatives for low-power analog and automotive subsystem design.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable reverse breakdown voltage across its cathode-anode terminals under controlled bias conditions. Its specified 15 V nominal Zener voltage is guaranteed at IZ = 50 µA, with differential resistance of 200 Ω at IZ = 5 mA and temperature coefficient of +9.2 mV/K.
The BZX8450-C15-Q features intentional minor leakage current optimization per AN90031 for improved switching speed and reduced noise in signal conditioning paths. It is qualified to AEC-Q101, supporting operation from −55 °C to +150 °C ambient, with junction temperature limit of 150 °C and non-repetitive surge capability up to 40 W (tp = 100 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.25 V to 15.75 V at IZ = 50 µA - defines precise regulation window for low-bias reference circuits |
| Differential Resistance (rdiff) | 200 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (SZ) | +9.2 mV/K - quantifies voltage drift per degree Celsius, critical for thermal stability in automotive environments |
| Reverse Current (IR) | 0.05 µA max at VR = 11.4 V - ensures minimal quiescent power loss in standby mode |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - enables predictable forward conduction for dual-direction protection schemes |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets thermal derating boundary for compact layout designs |
| Junction-to-Ambient Rth | 500 K/W - informs heatsinking requirements for sustained operation near power limits |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), qualified for reflow and wave soldering per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Positive terminal for forward conduction; connected to lower-potential node in shunt regulation |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress |
| 3 | Cathode (K) | Regulated output node in reverse-bias operation; ties to voltage rail requiring stabilization |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables use in microamp-level bias networks without compromising accuracy |
| AEC-Q101 qualification | Qualified for automotive applications - guarantees reliability under temperature cycling, humidity, and mechanical shock per discrete semiconductor standard |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise and improves transient response in feedback paths |
| Tight thermal resistance control | Rth(j-sp) = 330 K/W to cathode solder point - supports accurate thermal modeling for board-level reliability analysis |
| Standard SOT23 footprint | Compatible with industry-standard reflow profiles and automated placement - minimizes manufacturing process changeover |
Applications
| Automotive Cabin Sensor Biasing | Portable Medical Device Reference |
|---|---|
Use Scenario: Providing stable 15 V reference for MEMS pressure sensor signal conditioning in HVAC control modules. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing fixed bias point for op-amp input stage and ADC reference divider. Use Value: Maintains <±1 % output stability over −40 °C to +125 °C ambient, meeting ASIL-B functional safety margin requirements. |
Use Scenario: Generating precision 15 V rail for analog front-end amplifiers in handheld ECG monitors powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-quiescent Zener reference enabling >100-hour battery life while preserving signal integrity. Use Value: Draws only 0.05 µA leakage at 11.4 V reverse bias, reducing standby current by 40 % versus standard 1N4744A equivalents. |
| Industrial PLC Input Protection | IoT Node Power Rail Clamping |
Use Scenario: Clamping 24 V industrial fieldbus inputs against transients in programmable logic controller digital I/O modules. IC Role / Device Role / Timing Role: Transient voltage suppressor operating in Zener breakdown during overvoltage events. Use Value: Withstands 40 W non-repetitive surges (100 µs), exceeding IEC 61000-4-5 Level 3 immunity requirements. |
Use Scenario: Regulating auxiliary 15 V supply for LoRaWAN transceiver RF section in solar-powered environmental sensors. IC Role / Device Role / Timing Role: Precision shunt regulator stabilizing LDO input under variable PV panel output. Use Value: 200 Ω differential resistance ensures <0.3 % load regulation error across 1–5 mA dynamic current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15 | Non-automotive grade; no AEC-Q101 qualification; ±5 % tolerance; same VZ range but higher rdiff (250 Ω) | Limited to commercial-grade consumer electronics; unsuitable for under-hood automotive deployment | Select when cost sensitivity outweighs automotive qualification and thermal robustness requirements |
| MMSZ5245B | Same 15 V nominal rating; ±5 % tolerance; 500 mW Ptot; higher VF (1.1 V); not AEC-Q101 qualified | Higher power handling but larger thermal footprint; lacks automotive reliability validation | Prefer where higher surge energy absorption is needed and board space allows larger SOD-123 package |
Compared with BZX8450-C15-Q, BZX84-C15 sacrifices automotive qualification and thermal performance for lower cost, while MMSZ5245B trades AEC-Q101 compliance and SOT23 compactness for greater power dissipation headroom - making the BZX8450-C15-Q optimal for space-constrained, thermally demanding automotive and industrial edge nodes.
Availability
BZX8450-C15-Q is available at Aetrix Electronics and suitable for automotive cabin electronics, portable medical instrumentation, industrial PLC I/O protection, and IoT node power rail stabilization requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX8450-C15-Q 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions optimized for automotive, industrial, and mobile applications.
The BZX8450-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for low-current, low-noise voltage reference and clamping in harsh-environment automotive subsystems and portable electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZX8450-C15-Q?
The BZX8450-C15-Q exhibits nominal Zener breakdown at 15 V, with guaranteed minimum and maximum values of 14.25 V and 15.75 V respectively at IZ = 50 µA. Below 14.25 V, reverse current remains ≤0.05 µA - confirming stable non-conducting behavior until reaching the specified regulation threshold.
Can BZX8450-C15-Q be used in parallel for higher current handling?
No - Zener diodes exhibit inherent parameter spread; paralleling BZX8450-C15-Q units causes current imbalance due to VZ tolerance (±5 %) and differential resistance variation, risking thermal runaway. For higher current, use a single higher-rated device like MMBZ5245B or implement active regulation.
Is the n.c. pin (Pin 2) safe to connect to ground or leave floating?
Pin 2 is internally not connected and must remain unconnected on the PCB. Grounding it introduces risk of solder bridging, mechanical stress on the die bond wire, or unintended capacitive coupling - all violating Nexperia's SOT23 mounting guidelines and potentially degrading long-term reliability.
How does the +9.2 mV/K temperature coefficient affect circuit performance at 125 °C?
At 125 °C ambient (ΔT = +100 K from 25 °C), the Zener voltage shifts by +0.92 V - resulting in a regulated output of ~15.92 V. This is within the 15.75 V maximum spec at 25 °C, confirming monotonic positive drift and enabling predictable thermal compensation in closed-loop designs.
BZX8450-C15-QVL 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:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C15-QVL FAQ
1.How can I place an order for BZX8450-C15-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C15-QVL 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-C15-QVL reliable?
The price and inventory of BZX8450-C15-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C15-QVL is usually 5 days.
3.What payment methods are accepted for BZX8450-C15-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C15-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C15-QVL?
BZX8450-C15-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C15-QVL 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-C15-QVL?
For technical support, including BZX8450-C15-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C15-QVL requirements.
6.How does Aetrix verify that BZX8450-C15-QVL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C15-QVL 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-C15-QVL meets industry standards.
7.What is the process for return or replacement of BZX8450-C15-QVL?
All BZX8450-C15-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C15-QVL, 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-C15-QVL part is unused and in its original packaging.
Return procedure for BZX8450-C15-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C15-QVL 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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