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Nexperia USA Inc. BZX84W-B10F
- Part No.:
- BZX84W-B10F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B10F.pdf
- Description:
- DIODE ZENER 10V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:9,901
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Product details
Overview
BZX84W-B10F from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 10 V nominal Zener voltage at 5 mA, 275 mW total power dissipation, and 150 °C maximum junction temperature, used for precision voltage reference and overvoltage protection in compact DC power rails.
For engineers reviewing the BZX84W-B10F datasheet, BZX84W-B10F pinout, BZX84W-B10F application, or BZX84W-B10F equivalent, this page delivers verified Zener parameters, thermal resistance, differential resistance, temperature coefficient, and SMT footprint details critical for low-power regulation and ESD-adjacent clamping design.
Technical Context
This device operates in reverse-bias breakdown mode with a typical Zener voltage of 9.80 V to 10.20 V at IZ = 5 mA, exhibiting a positive temperature coefficient of +6.4 mV/K across that current range. Its differential resistance is 150 Ω at 5 mA, enabling stable regulation under moderate load transients.
The SOT323 package delivers 455 K/W junction-to-ambient thermal resistance on FR4 PCB with single-sided copper, limiting continuous power handling to 275 mW at 25 °C ambient. Non-repetitive peak reverse power dissipation reaches 40 W for 100 µs pulses, supporting transient suppression in low-energy surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.80 V to 10.20 V at IZ = 5 mA - defines regulated output voltage tolerance band for feedback or reference use |
| Tolerance | ±2 % - enables tighter voltage margin control than ±5 % variants in precision biasing circuits |
| Differential Resistance (rdif) | 150 Ω at IZ = 5 mA - determines output impedance and load regulation error sensitivity |
| Temperature Coefficient (SZ) | +6.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius rise, critical for temperature-stable references |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB - sets maximum steady-state power budget for thermal design |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 455 K/W - directly impacts junction temperature rise under load; requires derating above 25 °C ambient |
| Reverse Current (IR) | 200 nA at VR = 7 V - specifies leakage level below breakdown, affecting high-impedance node stability |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals; dimensions per IEC JEDEC outline: 2.2 mm × 1.35 mm × 0.95 mm height; standard reflow footprint per Figure 9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential side in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Electrically isolated internal pad; no circuit function; must remain unconnected on PCB |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential side and serves as regulated output node |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation accuracy vs. ±5 % variants, reducing need for post-regulation trimming in reference designs |
| Low differential resistance (150 Ω) | Minimizes output voltage variation under load current changes up to ±1 mA around 5 mA operating point |
| Positive temperature coefficient (+6.4 mV/K) | Compensates for negative TC of other components (e.g., BJTs) in mixed-technology analog circuits |
| SOT323 ultra-small footprint | Occupies only 2.97 mm² board area, supporting high-density layout in space-constrained portable and IoT devices |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 10 V reference for ADC biasing or op-amp feedback networks in battery-powered sensor nodes. IC Role / Device Role: Zener diode configured in reverse-bias as two-terminal shunt voltage reference. Use Value: Delivers 10 V ±2 % accuracy with <150 ppm/°C drift, eliminating need for external trim potentiometers. |
Use Scenario: Protecting microcontroller GPIO pins from ESD-induced voltage spikes during hot-plug USB interface events. IC Role / Device Role: Shunt clamp placed between I/O line and ground, conducting above 10.2 V threshold. Use Value: Limits transient voltage to ≤10.2 V with 200 nA leakage at 7 V, preserving signal integrity without loading active circuits. |
| Low-Power Bias Generator | Current Source Stabilizer |
Use Scenario: Generating fixed bias voltage for JFET amplifier stages in audio preamplifier front-ends. IC Role / Device Role: Zener referenced against series resistor to establish gate-source voltage. Use Value: Maintains bias point within ±0.2 V over −40 °C to +85 °C due to predictable +6.4 mV/K TC compensation. |
Use Scenario: Stabilizing constant-current source feeding LED strings in indicator panels with variable supply voltage. IC Role / Device Role: Zener regulates voltage across current-setting resistor to fix ILED. Use Value: Achieves <±3 % current variation across 9–12 V input range using only one passive component beyond the Zener. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C10 | ±5 % tolerance (9.4 V–10.6 V), same SOT323 package and Ptot | Acceptable where ±5 % regulation margin suffices; lower cost for non-critical references | Select when absolute voltage accuracy is secondary to BOM cost reduction in consumer-grade products |
| MMSZ4689 | 10 V nominal, ±5 %, SOD-123 package, 500 mW Ptot, Rth(j-a) ≈ 350 K/W | Higher power rating supports 2× continuous current but occupies 3.5× more board area | Choose when thermal headroom or surge energy handling exceeds SOT323 limits, accepting larger footprint |
Compared with BZX84W-B10F, BZX84W-C10 trades regulation accuracy for cost in identical form factor, while MMSZ4689 offers higher power capability at the expense of size and thermal efficiency-making BZX84W-B10F optimal for space-constrained, precision-limited 10 V reference needs.
Availability
BZX84W-B10F is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and low-power bias generator applications requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for BZX84W-B10F 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 discrete and logic devices, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, cost-effective voltage regulation and clamping in consumer, industrial, and computing applications where SMT miniaturization and parametric consistency are essential.
FAQ
What is the maximum continuous forward current for BZX84W-B10F?
The device is not rated for continuous forward conduction; its absolute maximum forward current is 200 mA per limiting values table, but operation is intended in reverse-bias Zener mode. Forward voltage is specified at 10 mA (≤0.9 V), and sustained forward bias risks thermal runaway or parameter shift.
Can BZX84W-B10F be used in place of a 10 V linear regulator IC?
No-it functions only as a shunt regulator, requiring an external series resistor to limit current and dissipate excess power. Unlike three-terminal regulators, it lacks internal pass elements, dropout control, or current limiting, making it unsuitable for load regulation without careful external design.
How does the 'B' suffix in BZX84W-B10F differ from 'C' in BZX84W-C10?
The 'B' denotes ±2 % Zener voltage tolerance (9.80–10.20 V), while 'C' indicates ±5 % (9.40–10.60 V). Both share identical package, power rating, and thermal characteristics; the 'B' variant is selected where tighter voltage control is required in reference or feedback paths.
Is BZX84W-B10F automotive-qualified?
No-this part is non-automotive qualified per Revision History section 13. It is not tested to AEC-Q200 or qualified for automotive environments. For automotive use, Nexperia offers separate -Q qualified variants; BZX84W-B10F is intended for industrial, computing, and consumer applications.
BZX84W-B10F 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):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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-B10F FAQ
1.How can I place an order for BZX84W-B10F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B10F 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-B10F reliable?
The price and inventory of BZX84W-B10F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B10F is usually 5 days.
3.What payment methods are accepted for BZX84W-B10F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B10F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B10F?
BZX84W-B10F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B10F 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-B10F?
For technical support, including BZX84W-B10F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B10F requirements.
6.How does Aetrix verify that BZX84W-B10F is sourced from the original manufacturer or authorized distributors?
All BZX84W-B10F 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-B10F meets industry standards.
7.What is the process for return or replacement of BZX84W-B10F?
All BZX84W-B10F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B10F, 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-B10F part is unused and in its original packaging.
Return procedure for BZX84W-B10F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B10F 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
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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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