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Nexperia USA Inc. BZX84W-B36F
- Part No.:
- BZX84W-B36F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B36F.pdf
- Description:
- DIODE ZENER 36V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:8,396
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Product details
Overview
BZX84W-B36F from Nexperia is a ±2 % tolerance Zener voltage regulator diode with a nominal 36 V breakdown voltage, 350 Ω differential resistance at 2 mA, and 33.0 mV/K temperature coefficient, housed in an SOT323 (SC-70) package for precision voltage reference in low-power analog circuits and overvoltage protection.
For engineers reviewing the BZX84W-B36F datasheet, BZX84W-B36F pinout, BZX84W-B36F application, or BZX84W-B36F equivalent, this page delivers verified Zener parameters, thermal limits, junction-to-ambient resistance, reverse leakage at 25.2 V, and SOT323 terminal mapping - all confirmed from Nexperia's Rev. 2 (Jan 2023) product data sheet.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable 36 V regulation across load and line variations. Its ±2 % tolerance ensures tight voltage control, while the 33.0 mV/K temperature coefficient enables predictable drift compensation in temperature-sensitive references.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 275 mW total power dissipation and withstands non-repetitive 40 W surge pulses (tp = 100 µs), making it suitable for transient suppression and precision biasing in compact DC/DC feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 35.3 V to 36.7 V at IZ = 2 mA - defines regulation setpoint with ±2 % accuracy for stable reference generation |
| Differential Resistance (rdif) | 350 Ω max at IZ = 2 mA - determines output impedance and load regulation error under varying current |
| Temperature Coefficient (SZ) | 33.0 mV/K at IZ = 2 mA - quantifies voltage drift per degree Celsius for thermal stability analysis |
| Reverse Leakage (IR) | 50 nA max at VR = 25.2 V (0.7 × VZnom) - ensures minimal quiescent current in high-impedance bias networks |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling without derating |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 455 K/W - determines temperature rise above ambient per watt of dissipated power |
| Non-Repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs - supports short-duration surge clamping in ESD or transient protection |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package with 3 leads; leadless construction optimized for automated reflow assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or solder joint required |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and serves as regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants, reducing need for post-calibration in precision voltage references |
| 33.0 mV/K temperature coefficient | Provides predictable, linear drift behavior for thermal compensation circuit design |
| 275 mW power rating on standard FR4 | Supports reliable operation without heatsinking in low-power analog supply rails and sensor biasing |
| 455 K/W junction-to-ambient thermal resistance | Allows accurate thermal modeling for ambient temperature derating in sealed enclosures |
| Non-repetitive 40 W surge capability | Permits use in basic transient voltage suppression where dedicated TVS devices are oversized |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Stabilizing feedback voltage in isolated DC/DC converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener diode provides fixed 36 V reference to optocoupler input, enabling precise output voltage control. Use Value: ±2 % tolerance ensures <±0.72 V output variation, meeting industrial 3.3 V/5 V rail accuracy requirements without trimming. |
Use Scenario: Protecting microcontroller GPIO pins from 40 V transients induced by relay coil flyback. IC Role / Device Role / Timing Role: Acts as shunt clamp between I/O line and ground, conducting only above 36 V threshold. Use Value: 350 Ω dynamic impedance limits clamping voltage overshoot to ≤37.8 V during 100 µs surges, preserving pin integrity. |
| Sensor Bias Network | High-Frequency Signal Conditioning |
|
Use Scenario: Providing stable bias voltage to a 4–20 mA current loop transmitter's op-amp stage. IC Role / Device Role / Timing Role: Functions as low-noise, low-drift voltage source for precision current-setting resistors. Use Value: 33.0 mV/K coefficient allows predictable offset correction across −40 °C to +85 °C operating range. |
Use Scenario: AC-coupling and level-shifting RF detector output in 2.4 GHz ISM band receiver front-end. IC Role / Device Role / Timing Role: Supplies DC restoration voltage while minimizing parasitic capacitance impact on signal path. Use Value: 0.8 pF junction capacitance at 0 V bias preserves >1 GHz bandwidth in high-speed signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C36 | ±5 % tolerance (34.0–38.0 V), 350 Ω rdif, same SOT323 package | Acceptable where ±5 % regulation accuracy suffices and cost sensitivity outweighs precision needs | Select when budget constraints dominate and system-level calibration compensates for wider voltage spread |
| MMSZ4687T1G | ±5 % tolerance (34.2–37.8 V), 300 Ω rdif, SOD-123 package, 500 mW Ptot | Higher power handling but larger footprint; unsuitable for ultra-dense layouts requiring SOT323 | Choose when thermal margin is critical and board area permits SOD-123 mounting |
Compared with BZX84W-B36F, BZX84W-C36 trades ±2 % accuracy for broader availability and lower unit cost, while MMSZ4687T1G offers higher power rating in a larger package - neither matches the combination of tight tolerance, SOT323 size, and 275 mW dissipation in this specific variant.
Availability
BZX84W-B36F is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, and sensor biasing applications requiring stable component supply, consistent parametric performance, and long-term SMT manufacturability.
Supply support for BZX84W-B36F 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 logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for stable voltage regulation and reference functions in consumer, industrial, and computing applications where compact size and parametric consistency are essential.
FAQ
What is the maximum continuous forward current for BZX84W-B36F?
The device is not rated for continuous forward conduction; its absolute maximum forward current is 200 mA per IEC 60134 limiting values, but typical operation occurs in reverse breakdown. Forward voltage is specified at 10 mA (≤0.9 V), and sustained forward bias risks thermal runaway due to lack of current-limiting structure.
Can BZX84W-B36F be used in automotive applications?
No - this part is explicitly marked as non-automotive qualified in Nexperia's revision history. It lacks AEC-Q200 qualification, automotive-grade screening, and extended temperature validation beyond −55 °C to +150 °C ambient. Automotive designs require the −Q qualified BZX84W-Q series variants.
How does the "B" suffix in BZX84W-B36F affect its marking and identification?
The "B" denotes ±2 % Zener voltage tolerance and corresponds to the marking code "K9%" on the device body per Table 4. This distinguishes it from "C"-suffix parts (±5 %, e.g., "S9%") and ensures visual traceability during SMT inspection and rework verification.
Is pin 2 truly unconnected, and what happens if it is accidentally soldered?
Yes - pin 2 is internally not connected (n.c.), as confirmed in Table 2 and Figure 8. Accidental soldering creates no electrical effect but may compromise mechanical reliability during thermal cycling or induce solder bridging risk with adjacent pads in fine-pitch layouts.
BZX84W-B36F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-B36F FAQ
1.How can I place an order for BZX84W-B36F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B36F 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-B36F reliable?
The price and inventory of BZX84W-B36F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B36F is usually 5 days.
3.What payment methods are accepted for BZX84W-B36F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B36F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B36F?
BZX84W-B36F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B36F 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-B36F?
For technical support, including BZX84W-B36F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B36F requirements.
6.How does Aetrix verify that BZX84W-B36F is sourced from the original manufacturer or authorized distributors?
All BZX84W-B36F 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-B36F meets industry standards.
7.What is the process for return or replacement of BZX84W-B36F?
All BZX84W-B36F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B36F, 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-B36F part is unused and in its original packaging.
Return procedure for BZX84W-B36F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B36F Tags
-
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
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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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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