My Inquiry
My Account
Nexperia USA Inc. BZX84W-C5V1-QX
- Part No.:
- BZX84W-C5V1-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C5V1-QX.pdf
- Description:
- DIODE ZENER 5.1V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,739
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84W-C5V1-QX from Nexperia is a ±5% tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 5.1 V nominal regulation at 5 mA, with 480 Ω typical differential resistance and −0.8 mV/K temperature coefficient. It delivers stable reference voltage in automotive power supply rails, ECU voltage monitoring circuits, and low-power sensor biasing networks.
For engineers reviewing the BZX84W-C5V1-QX datasheet, BZX84W-C5V1-QX pinout, BZX84W-C5V1-QX application, or BZX84W-C5V1-QX equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (455 K/W), reverse leakage (2 µA at 2 V), junction temperature limit (150 °C), and AEC-Q101 qualification status.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 5.1 V reference under regulated current conditions (IZ = 5 mA). Its −0.8 mV/K temperature coefficient ensures minimal drift across automotive ambient ranges (−55 °C to +150 °C), and its 480 Ω differential resistance limits output impedance during load transients.
The device uses a planar epitaxial silicon structure optimized for low noise and high reliability in automotive-grade applications. It supports non-repetitive surge handling up to 40 W (tp = 100 µs) and maintains ≤2 µA reverse leakage at VR = 2 V, enabling precision biasing in low-current analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.80 V to 5.40 V at IZ = 5 mA - defines regulation window for 5.1 V nominal reference |
| Differential Resistance (rdif) | 480 Ω max at IZ = 5 mA - determines output impedance and load regulation error |
| Reverse Leakage (IR) | 2 µA max at VR = 2 V - ensures low quiescent current in standby-biased circuits |
| Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets continuous DC power budget for thermal design |
| Junction Temperature (Tj) | 150 °C max - enables operation in under-hood automotive environments |
| Thermal Resistance (Rth(j-a)) | 455 K/W - quantifies self-heating rise per milliwatt on standard PCB layout |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals; compact footprint (2.2 mm × 1.35 mm × 0.95 mm) optimized for high-density automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connected to lower-potential side in Zener bias configuration |
| 2 | Not Connected (n.c.) | Electrically isolated internal terminal; no PCB trace or solder connection required |
| 3 | Cathode (K) | Reverse-bias input; tied to higher-potential rail to enable Zener conduction and voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables cost-effective regulation where tight voltage accuracy is not critical (e.g., overvoltage detection thresholds) |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing per discrete semiconductor standard |
| Low 2 µA reverse leakage at 2 V | Minimizes standby current draw in always-on vehicle modules such as CAN wake-up receivers |
| 455 K/W thermal resistance | Allows direct thermal modeling on standard FR4 boards without heatsinking for <100 mW dissipation |
| Non-repetitive 40 W surge capability | Withstands transient load dump spikes common in 12 V automotive electrical systems |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Monitoring 5 V supply rail integrity in engine control units during cold cranking and load dump events. IC Role / Device Role / Timing Role: Zener voltage reference providing stable threshold for supervisor IC reset assertion. Use Value: Maintains accurate 5.1 V trip point despite −40 °C to +125 °C ambient swings and 2 µA leakage ensures low system idle current. | Use Scenario: Providing precise bias voltage for analog front-end amplifiers in pressure and temperature sensors. IC Role / Device Role / Timing Role: Low-noise voltage reference source stabilizing op-amp input common-mode level. Use Value: 480 Ω differential resistance minimizes regulation error under varying sensor load currents; −0.8 mV/K TC reduces calibration drift. |
| USB-C Port Overvoltage Protection | Smart Lighting LED Driver Feedback |
Use Scenario: Clamping transient overvoltage on USB-C VBUS line during hot-plug or ESD events. IC Role / Device Role / Timing Role: Fast-response shunt regulator absorbing surge energy before downstream protection IC triggers. Use Value: 40 W non-repetitive peak power rating handles 100 µs ESD pulses; SOT323 footprint fits tight board space near connector. | Use Scenario: Setting feedback reference for constant-current LED driver ICs in automotive interior lighting. IC Role / Device Role / Timing Role: Precision voltage reference in optocoupler-isolated feedback loop. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime; 5.1 V output matches common TL431-based driver designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-B5V1-Q | ±2% tolerance (4.9–5.1 V vs. 4.8–5.4 V); 600 Ω rdif max | Narrower regulation band suits precision references; higher rdif increases load sensitivity | Select when tighter voltage accuracy outweighs higher impedance impact on dynamic regulation |
| MMSZ5231B-TP | ±5% tolerance, 5.1 V nominal, but SOD-123 package (larger footprint, 625 mW Ptot) | Higher power handling suits industrial 24 V systems; not AEC-Q101 qualified | Choose for non-automotive applications requiring >275 mW dissipation or legacy footprint compatibility |
Compared with BZX84W-C5V1-QX, the BZX84W-B5V1-Q offers tighter voltage control at the cost of higher dynamic impedance, while MMSZ5231B-TP trades automotive qualification for greater power margin and larger package size-making each suitable only for specific thermal, accuracy, or compliance constraints.
Availability
BZX84W-C5V1-QX is available at Aetrix Electronics and suitable for automotive ECU power monitoring, industrial sensor bias reference, and USB-C overvoltage protection requiring stable component supply across extended temperature and lifecycle demands.
Supply support for BZX84W-C5V1-QX 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.
The BZX84W-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in harsh-temperature vehicle electronics.
FAQ
What is the maximum continuous power dissipation for BZX84W-C5V1-QX?
The BZX84W-C5V1-QX has a total power dissipation rating of 275 mW at Tamb = 25 °C when mounted on a standard FR4 PCB with single-sided copper and tin plating. Derating is required above 25 °C at 0.61 mW/°C based on its 455 K/W thermal resistance.
Is BZX84W-C5V1-QX suitable for use in automotive applications?
Yes-BZX84W-C5V1-QX is qualified to AEC-Q101 standards and explicitly recommended by Nexperia for automotive applications. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD, supporting operation from −55 °C to +150 °C junction temperature.
How does the "C" in BZX84W-C5V1-QX denote tolerance?
The "C" suffix indicates ±5% Zener voltage tolerance, meaning the actual breakdown voltage falls between 4.80 V and 5.40 V at 5 mA test current. This contrasts with "B"-suffix variants, which specify ±2% tolerance (4.90–5.10 V for 5.1 V nominal).
What is the function of Pin 2 (n.c.) on the SOT323 package?
Pin 2 is internally not connected (n.c.) and must remain unconnected on the PCB. It serves as a mechanical alignment aid during assembly and has no electrical role-no trace, solder paste, or thermal pad should be applied to this terminal.
BZX84W-C5V1-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±5.88%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C5V1-QX FAQ
1.How can I place an order for BZX84W-C5V1-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C5V1-QX 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 BZX84W-C5V1-QX reliable?
The price and inventory of BZX84W-C5V1-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C5V1-QX is usually 5 days.
3.What payment methods are accepted for BZX84W-C5V1-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C5V1-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C5V1-QX?
BZX84W-C5V1-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C5V1-QX 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 BZX84W-C5V1-QX?
For technical support, including BZX84W-C5V1-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C5V1-QX requirements.
6.How does Aetrix verify that BZX84W-C5V1-QX is sourced from the original manufacturer or authorized distributors?
All BZX84W-C5V1-QX 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 BZX84W-C5V1-QX meets industry standards.
7.What is the process for return or replacement of BZX84W-C5V1-QX?
All BZX84W-C5V1-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C5V1-QX, 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 BZX84W-C5V1-QX part is unused and in its original packaging.
Return procedure for BZX84W-C5V1-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C5V1-QX 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
