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Nexperia USA Inc. BZX8450-C5V6-QVL
- Part No.:
- BZX8450-C5V6-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C5V6-QVL.pdf
- Description:
- DIODE ZENER 5.6V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,531
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Product details
Overview
BZX8450-C5V6-QVL 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 5.6 V nominal regulation at 50 µA test current, with ±5 % tolerance, 400 Ω differential resistance at 5 mA, and −2.0 mV/K temperature coefficient.
For engineers reviewing the BZX8450-C5V6-QVL datasheet, BZX8450-C5V6-QVL pinout, BZX8450-C5V6-QVL application, or BZX8450-C5V6-QVL equivalent, this device is selected for low-power rail stabilization, ESD-protected sensor biasing, and AEC-Q101-compliant voltage clamping where minimal leakage and thermal drift matter.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - enabling ultra-low quiescent current operation ideal for battery-powered systems. Its intentional minor leakage rise (per AN90031) improves switching speed and reduces noise in dynamic bias networks.
The device features a −2.0 mV/K temperature coefficient near 5.6 V, minimizing output drift over temperature, and exhibits 120 pF junction capacitance at 0 V, supporting stable performance in high-frequency analog sensing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.6 V at IZ = 50 µA - defines precise reference point for low-current bias networks |
| Tolerance | ±5 % - supports cost-sensitive designs where tight regulation is balanced against manufacturing variance |
| Differential Resistance | 400 Ω at IZ = 5 mA - determines load regulation error under small-signal current variation |
| Temperature Coefficient | −2.0 mV/K - ensures predictable, low-drift voltage reference across −55 °C to +150 °C ambient |
| Forward Voltage | 0.9 V at IF = 10 mA - enables reliable anode-cathode conduction during power-up or fault conditions |
| Max Power Dissipation | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets safe continuous operating limit for surface-mount thermal design |
| Junction Temperature Limit | 150 °C - defines absolute thermal ceiling for reliability in under-hood automotive environments |
Pinout & Package
SOT23 plastic surface-mounted package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided FR4 mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Positive terminal for forward conduction; connects to higher-potential node in reverse-bias regulation |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or solder joint required |
| 3 | Cathode (K) | Regulated output node in reverse-bias configuration; ties to system ground or reference plane |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Low test current specification | Regulation defined at 50 µA - enables direct integration into microamp-level sensor bias rails |
| Optimized leakage profile | Intentional minor IR increase per AN90031 - reduces switching transients and broadband noise in feedback paths |
| Thermally stable Zener voltage | −2.0 mV/K coefficient at 5.6 V - minimizes calibration drift in engine control unit (ECU) reference circuits |
Applications
| Automotive Sensor Biasing | Portable Device Voltage Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to analog pressure or temperature sensors in engine control modules. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to fix sensor bridge bias point. Use Value: −2.0 mV/K tempco and AEC-Q101 qualification ensure <10 mV drift over −40 °C to +125 °C, meeting ASIL-B sensor accuracy requirements. |
Use Scenario: Generating a low-power reference for ADC input scaling in Bluetooth LE wearables. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator supplying 5.6 V to op-amp reference input. Use Value: 50 µA test current and 250 mW dissipation enable operation from coin-cell sources with <1 µA standby leakage impact. |
| ESD-Protected IO Clamping | Microcontroller Reset Circuit |
Use Scenario: Clamping I²C bus lines against transient overvoltage while preserving signal integrity. IC Role / Device Role / Timing Role: Bidirectional shunt clamp using forward conduction (anode-to-ground) and Zener breakdown (cathode-to-rail). Use Value: 0.9 V forward drop and 120 pF capacitance limit signal edge degradation to <1 ns rise-time penalty on 400 kHz bus. |
Use Scenario: Generating a clean, temperature-stable reset threshold for automotive microcontrollers. IC Role / Device Role / Timing Role: Zener-based voltage monitor feeding comparator input to trigger POR or brown-out detection. Use Value: 400 Ω dynamic impedance ensures <50 mV hysteresis shift over 100 µA supply current variation, improving reset repeatability. |
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-C5V6,115 (Nexperia) | Same 5.6 V, ±5 %, SOT23, but non-AEC-Q101; 500 mW Ptot; higher rdiff (600 Ω) | Lacks automotive qualification; suitable only for industrial or consumer-grade boards | Select when AEC-Q101 is not required and higher power margin is needed |
| MMSZ5232B-TP (Micro Commercial Components) | 5.6 V, ±5 %, SOD-123; 500 mW; rdiff = 15 Ω; no AEC-Q101; 100 pF Cd | Lower impedance improves load regulation but SOD-123 footprint prevents drop-in replacement | Choose for improved regulation accuracy in non-automotive space-constrained designs |
Compared with BZX8450-C5V6-QVL, the BZX84-C5V6 offers higher power headroom but lacks automotive qualification, while MMSZ5232B-TP delivers tighter regulation at the cost of incompatible packaging and missing AEC-Q101 validation.
Availability
BZX8450-C5V6-QVL is available at Aetrix Electronics and suitable for automotive sensor biasing, portable device voltage references, ESD-protected IO clamping, and microcontroller reset circuits requiring stable component supply across extended temperature ranges.
Supply support for BZX8450-C5V6-QVL 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 electronics where precision, stability, and qualification rigor are mandatory.
FAQ
What is the maximum reverse current at 5.6 V before breakdown?
At VR = 5.6 V and Tj = 25 °C, the typical reverse current is 4.0 µA (Table 8). This value reflects the diode's leakage behavior just below nominal Zener voltage and is critical for estimating quiescent power in always-on bias networks.
Can BZX8450-C5V6-QVL be used in forward conduction mode?
Yes - it conducts forward with VF = 0.9 V at IF = 10 mA (Table 1), making it suitable for dual-role applications like bidirectional clamping or polarity protection, provided current stays within 200 mA absolute maximum rating.
How does the "C" suffix affect regulation performance versus "B" variants?
The "C" suffix denotes ±5 % tolerance (vs. ±2 % for "B"), with wider VZ min/max spread (5.32 V to 5.88 V) and lower differential resistance (400 Ω vs. 500 Ω for "B") - trading precision for improved dynamic regulation in variable-load scenarios.
Is pin 2 truly unconnected, or does it serve a thermal function?
Pin 2 is electrically unconnected (n.c.) per Table 2 and must remain floating - it has no internal bond wire or thermal path. Thermal resistance data (Rth(j-sp) = 330 K/W) references only the cathode tab (pin 3), confirming pin 2 contributes no thermal relief.
BZX8450-C5V6-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):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 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-C5V6-QVL FAQ
1.How can I place an order for BZX8450-C5V6-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C5V6-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-C5V6-QVL reliable?
The price and inventory of BZX8450-C5V6-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-C5V6-QVL is usually 5 days.
3.What payment methods are accepted for BZX8450-C5V6-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C5V6-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C5V6-QVL?
BZX8450-C5V6-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C5V6-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-C5V6-QVL?
For technical support, including BZX8450-C5V6-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C5V6-QVL requirements.
6.How does Aetrix verify that BZX8450-C5V6-QVL is sourced from the original manufacturer or authorized distributors?
All BZX8450-C5V6-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-C5V6-QVL meets industry standards.
7.What is the process for return or replacement of BZX8450-C5V6-QVL?
All BZX8450-C5V6-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C5V6-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-C5V6-QVL part is unused and in its original packaging.
Return procedure for BZX8450-C5V6-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C5V6-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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