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Nexperia USA Inc. BZX84W-C3V6-QF
- Part No.:
- BZX84W-C3V6-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C3V6-QF.pdf
- Description:
- DIODE ZENER 3.6V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,633
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Product details
Overview
BZX84W-C3V6-QF from Nexperia is a ±5 % tolerance Zener diode in SOT323 (SC-70) package, rated for 3.6 V nominal regulation voltage at 5 mA, with 275 mW total power dissipation and 5 µA reverse leakage at 1 V, used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the BZX84W-C3V6-QF datasheet, BZX84W-C3V6-QF pinout, BZX84W-C3V6-QF application, or BZX84W-C3V6-QF equivalent, this page delivers verified Zener parameters, AEC-Q101 qualification status, thermal resistance (455 K/W), differential resistance (90 Ω), and temperature coefficient (−2.4 mV/K) to support automotive-grade voltage stabilization design.
Technical Context
This Zener diode operates in reverse breakdown mode with a tightly controlled 3.6 V nominal Zener voltage (VZ) at IZ = 5 mA, exhibiting −2.4 mV/K temperature coefficient and 90 Ω differential resistance (rdif) under same conditions. Its low 5 µA reverse current at VR = 1 V ensures minimal standby leakage in bias networks.
Qualified per AEC-Q101, it supports operation from −55 °C to +150 °C ambient and withstands non-repetitive peak reverse power up to 40 W (100 µs pulse), with thermal resistance of 455 K/W on standard FR4 PCB - enabling robust performance in engine control unit (ECU) and body electronics voltage clamping circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.40 V to 3.80 V at IZ = 5 mA - defines stable regulation window for 3.3 V rail supervision |
| Tolerance | ±5 % - matches C-suffix series; enables cost-optimized selection where tighter tolerance not required |
| Differential Resistance (rdif) | 90 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Leakage (IR) | 5 µA max at VR = 1 V - ensures low quiescent current in always-on monitoring circuits |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous Zener current to ~76 mA |
| Temperature Coefficient (SZ) | −2.4 mV/K at IZ = 5 mA - quantifies VZ drift over temperature in automotive environments |
| Junction Temperature (Tj) | 150 °C max - supports operation in under-hood ECU modules without derating below 125 °C ambient |
Pinout & Package
SOT323 (SC-70) leadless surface-mount package: 1.3 mm × 1.8 mm footprint, 0.65 mm pitch, 0.9 mm height, optimized for high-density automotive PCB layouts and reflow soldering.
| 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.) | Electrically isolated; no internal bond wire or die connection - must remain unconnected on PCB |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and current-limiting resistor in shunt regulator |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing - eliminates need for additional qualification effort |
| Low thermal resistance | 455 K/W junction-to-ambient on FR4 - enables stable regulation without heatsinking in space-constrained modules |
| Low capacitance | 6 pF at f = 1 MHz, VR = 0 V - preserves signal integrity in high-frequency feedback paths and EMI filtering |
| Wide voltage range coverage | Part of 74-type series spanning 2.4 V to 75 V - simplifies BOM consolidation across multiple vehicle subsystems |
Applications
| Engine Control Unit (ECU) Reference | Infotainment Power Sequencing |
|---|---|
Use Scenario: Providing stable 3.6 V reference for ADC biasing and sensor signal conditioning in engine management systems. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining accuracy despite battery voltage fluctuations (9–16 V). Use Value: ±5 % VZ tolerance and −2.4 mV/K tempco ensure <±15 mV drift over −40 °C to +125 °C operating range. |
Use Scenario: Clamping 3.3 V LDO output during hot-swap events in head unit power domains. IC Role / Device Role / Timing Role: Overvoltage protection element absorbing transient energy before downstream IC damage. Use Value: 40 W non-repetitive peak power handling (100 µs) suppresses ESD and load-dump spikes without failure. |
| Body Control Module (BCM) Reset Circuit | ADAS Camera Bias Network |
Use Scenario: Generating clean reset threshold for microcontroller brown-out detection in door module logic. IC Role / Device Role / Timing Role: Precision voltage threshold detector with low leakage (<5 µA) minimizing standby current. Use Value: 5 µA reverse current at 1 V ensures <1 µA contribution to 10 µA system sleep budget. |
Use Scenario: Stabilizing analog bias voltage for CMOS image sensor pixel array in surround-view cameras. IC Role / Device Role / Timing Role: Low-noise DC reference source with 6 pF capacitance avoiding RF coupling into sensitive analog front-end. Use Value: 6 pF junction capacitance minimizes high-frequency noise injection into 12-bit image data path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-B3V6-Q | ±2 % tolerance (vs. ±5 %); identical VZ min/max, rdif, and thermal specs | Required where tighter regulation stability needed for high-precision ADC references | Select when VZ drift budget is <±7 mV over temperature and supply variation |
| MMSZ4685T1G | 3.6 V nominal, ±5 %, but SOD-123 package (larger footprint, 625 mW Ptot, 300 K/W Rth(j-a)) | Better power handling for industrial non-automotive designs; lacks AEC-Q101 qualification | Choose for cost-sensitive consumer or industrial applications needing higher surge margin and no automotive compliance |
Compared with BZX84W-C3V6-QF, the BZX84W-B3V6-Q offers tighter tolerance at identical form factor and qualification, while MMSZ4685T1G trades automotive compliance for higher power and larger package - guiding selection based on precision, qualification, and thermal/power priorities.
Availability
BZX84W-C3V6-QF is available at Aetrix Electronics and suitable for automotive ECU reference design, infotainment power sequencing, and ADAS camera bias networks requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84W-C3V6-QF 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.
BZX84W-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation, clamping, and reference functions where reliability under harsh thermal and electrical stress is mandatory.
FAQ
What is the maximum continuous Zener current for BZX84W-C3V6-QF at 85 °C ambient?
At Tamb = 85 °C, derating applies: Ptot = 275 mW × (1 − (85 − 25)/125) = 165 mW. With VZ ≈ 3.6 V, max continuous IZ = 165 mW / 3.6 V ≈ 46 mA. This assumes standard FR4 mounting per datasheet condition.
Is Pin 2 internally connected or truly floating?
Pin 2 is explicitly marked "n.c." (not connected) in Nexperia's official pinning table and graphic symbol. It has no internal die connection or bond wire - must be left unconnected on PCB layout to avoid unintended parasitic coupling or solder bridging.
How does the −2.4 mV/K temperature coefficient affect regulation accuracy at 125 °C junction temperature?
From 25 °C to 125 °C ΔT = 100 K, so VZ shift = −2.4 mV/K × 100 K = −0.24 V. For nominal 3.6 V, this yields 3.36 V at 125 °C - within the ±5 % (3.40–3.80 V) spec band only if initial VZ is near upper limit; design margin must account for combined tempco and tolerance.
Can BZX84W-C3V6-QF replace BZX84-C3V6 in existing SOT23 designs?
No - BZX84W-C3V6-QF uses SOT323 (SC-70) package (1.3 × 1.8 mm), while BZX84-C3V6 uses SOT23 (2.9 × 1.3 mm). Footprint, pad layout, and thermal performance differ significantly; direct replacement requires PCB redesign and requalification per AEC-Q101.
BZX84W-C3V6-QF 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):
- 3.6 V
- Tolerance:
- ±5.56%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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-C3V6-QF FAQ
1.How can I place an order for BZX84W-C3V6-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C3V6-QF 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-C3V6-QF reliable?
The price and inventory of BZX84W-C3V6-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C3V6-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C3V6-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C3V6-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C3V6-QF?
BZX84W-C3V6-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C3V6-QF 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-C3V6-QF?
For technical support, including BZX84W-C3V6-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C3V6-QF requirements.
6.How does Aetrix verify that BZX84W-C3V6-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C3V6-QF 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-C3V6-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C3V6-QF?
All BZX84W-C3V6-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C3V6-QF, 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-C3V6-QF part is unused and in its original packaging.
Return procedure for BZX84W-C3V6-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C3V6-QF 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
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
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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