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Nexperia USA Inc. BZX8450-C3V6-QVL
- Part No.:
- BZX8450-C3V6-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C3V6-QVL.pdf
- Description:
- DIODE ZENER 3.6V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,269
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Product details
Overview
BZX8450-C3V6-Q from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in automotive and portable electronics. It delivers 3.6 V nominal regulation at 50 µA test current, with ±5 % tolerance, 250 mW total power dissipation, and qualified AEC-Q101 reliability.
For engineers reviewing the BZX8450-C3V6-Q datasheet, BZX8450-C3V6-Q pinout, BZX8450-C3V6-Q application, or BZX8450-C3V6-Q equivalent, this device serves as a stable, low-leakage voltage reference for battery-powered sensor nodes, automotive microcontroller reset circuits, and low-power analog front-ends requiring tight thermal stability and minimal quiescent current.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 3.42 V to 3.78 V at IZ = 50 µA, exhibiting a temperature coefficient of −3.5 mV/K and differential resistance ≤95 Ω at IZ = 5 mA. Its low 50 µA test current enables ultra-low standby power consumption.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and features intentional minor leakage optimization per AN90031 for improved switching speed and noise reduction in dynamic bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.6 V (3.42 V to 3.78 V at IZ = 50 µA - defines precise reference point for low-current biasing) |
| Tolerance | ±5 % (C-series grading - ensures predictable regulation window across production lots) |
| Test Current | 50 µA (enables operation in µA-level supply rails, ideal for coin-cell or energy-harvesting systems) |
| Max Power Dissipation | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets safe continuous operating limit under standard layout) |
| Differential Resistance | ≤95 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity) |
| Reverse Leakage | ≤2.0 µA at VR = 2.0 V - critical for maintaining accuracy in high-impedance reference dividers) |
| Junction Temperature | −55 °C to +150 °C - supports under-hood automotive environments and industrial extended-range operation) |
Pinout & 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 space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in reverse-bias regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or solder mask required |
| 3 | Cathode (K) | Reverse-bias terminal; connects to regulated voltage rail and current-limiting resistor |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Low Test Current (50 µA) | Enables direct use in µA-scale bias networks without additional amplification or buffering |
| Optimized Leakage Profile | Intentional minor IR rise improves transient response and reduces broadband noise in reference paths |
| Thermal Stability | −3.5 mV/K tempco minimizes drift over −40 °C to +125 °C ambient operating range |
| Small-Signal Capacitance | 160 pF at VR = 0 V, f = 1 MHz - limits high-frequency coupling in mixed-signal PCB layouts |
Applications
| Automotive Microcontroller Reset Circuit | Portable Gas Sensor Bias Network |
|---|---|
Use Scenario: Provides stable 3.6 V reference to enable precise threshold detection in vehicle ECU reset supervisors. IC Role / Device Role / Timing Role: Zener voltage reference establishing clean, temperature-compensated reset logic level. Use Value: Ensures deterministic brown-out detection across −40 °C to +125 °C with <1.5 % total error including tempco and tolerance. |
Use Scenario: Supplies regulated bias to electrochemical gas sensing elements powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Low-quiescent-current voltage reference enabling >5-year battery life in wireless IoT sensors. Use Value: Delivers 3.6 V ±5 % at 50 µA, reducing system standby current by 80 % versus standard 10 mA Zener solutions. |
| Industrial Analog Front-End Reference | USB-C Power Negotiation Voltage Divider |
Use Scenario: Stabilizes input to 12-bit ADC reference buffer in programmable logic controller analog inputs. IC Role / Device Role / Timing Role: Precision shunt reference setting full-scale ADC conversion point. Use Value: Maintains <0.1 % line regulation error over 1–10 mA load variation due to low rdiff (≤95 Ω). |
Use Scenario: Forms top leg of voltage divider feeding CC pin in USB-C PD sink controllers. IC Role / Device Role / Timing Role: Stable 3.6 V node defining USB PD contract negotiation voltage thresholds. Use Value: Guarantees ±5 % accuracy at 50 µA bias, eliminating need for external op-amp buffering in cost-sensitive designs. |
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-C3V6 | Non-AEC-Q101, ±5 % tolerance, same 3.6 V nominal, but lacks automotive qualification and optimized leakage profile | Restricted to commercial-grade consumer or industrial equipment without automotive lifecycle or reliability requirements | Select when AEC-Q101 compliance is unnecessary and cost is primary constraint |
| MMSZ4685 | 3.6 V nominal, ±5 %, SOD-123 package, 500 mW Ptot, higher rdiff (150 Ω), no AEC-Q101 qualification | Requires larger PCB area and dissipates more heat; unsuitable for dense automotive modules or low-IZ biasing | Choose only if SOD-123 footprint compatibility is mandatory and thermal margin exceeds 250 mW |
Compared with BZX8450-C3V6-Q, BZX84-C3V6 omits automotive qualification and leakage optimization, while MMSZ4685 trades smaller size for higher power dissipation and degraded low-current regulation performance - making the BZX8450-C3V6-Q uniquely suited for space-constrained, AEC-Q101-compliant, ultra-low-bias applications.
Availability
BZX8450-C3V6-Q is available at Aetrix Electronics and suitable for automotive ECUs, portable medical sensors, industrial analog signal chains, and USB-C power interface designs requiring stable component supply and long-term lifecycle support.
Supply support for BZX8450-C3V6-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
The BZX8450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current voltage regulation in harsh-environment automotive and portable electronics where precision, reliability, and minimal quiescent power are critical.
FAQ
What is the maximum reverse current at 2.0 V for BZX8450-C3V6-Q?
The maximum reverse current (IR) is 2.0 µA at VR = 2.0 V and Tj = 25 °C, as specified in Table 8 of the datasheet. This low leakage ensures minimal error contribution in high-impedance reference divider networks and supports accurate low-power biasing.
Can BZX8450-C3V6-Q be used in place of a standard 3.3 V Zener diode?
No - its nominal Zener voltage is 3.6 V (3.42–3.78 V), not 3.3 V. Substituting it for a 3.3 V part would shift reference levels by ~90 mV, potentially violating ADC input ranges or reset threshold specifications. Use BZX8450-C3V3-Q for 3.3 V regulation.
Is pin 2 electrically functional or purely mechanical?
Pin 2 is explicitly marked "n.c." (not connected) in Table 2 and has no internal bond wire or silicon connection. It is a mechanical stub for SOT23 symmetry and must remain unconnected on PCB - routing or soldering to it may cause assembly defects or parametric shifts.
How does the −3.5 mV/K temperature coefficient impact circuit design?
This negative tempco means output voltage decreases by 3.5 mV per °C rise in junction temperature. For a 100 °C ΔT, regulation shifts −350 mV - requiring thermal derating or compensation in high-accuracy references. It is well-suited for applications where moderate drift is acceptable, such as reset supervision.
BZX8450-C3V6-QVL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX8450-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C3V6-QVL FAQ
1.How can I place an order for BZX8450-C3V6-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C3V6-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-C3V6-QVL reliable?
The price and inventory of BZX8450-C3V6-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-C3V6-QVL is usually 5 days.
3.What payment methods are accepted for BZX8450-C3V6-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C3V6-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C3V6-QVL?
BZX8450-C3V6-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C3V6-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-C3V6-QVL?
For technical support, including BZX8450-C3V6-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C3V6-QVL requirements.
6.How does Aetrix verify that BZX8450-C3V6-QVL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C3V6-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-C3V6-QVL meets industry standards.
7.What is the process for return or replacement of BZX8450-C3V6-QVL?
All BZX8450-C3V6-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C3V6-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-C3V6-QVL part is unused and in its original packaging.
Return procedure for BZX8450-C3V6-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C3V6-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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