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Nexperia USA Inc. BZX84W-B13F
- Part No.:
- BZX84W-B13F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-B13F.pdf
- Description:
- DIODE ZENER 13V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:30
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Product details
Overview
BZX84W-B13F from Nexperia is a ±2 % tolerance Zener voltage regulator diode with a nominal 13 V breakdown voltage, 170 Ω differential resistance at 5 mA, and 9.4 mV/K temperature coefficient, designed for precision voltage reference and clamping in low-power analog circuits and power supply feedback paths.
For engineers reviewing the BZX84W-B13F datasheet, BZX84W-B13F pinout, BZX84W-B13F application, or BZX84W-B13F equivalent, this device serves as a stable 13 V reference in SOT323 packages where thermal stability, low leakage (100 nA at 8 V), and tight voltage tolerance are critical for regulation accuracy.
Technical Context
This Zener diode operates in reverse-bias breakdown mode with a specified 13 V nominal Zener voltage (12.7–13.3 V range) and exhibits a positive temperature coefficient of +9.4 mV/K at 5 mA, enabling predictable drift compensation in temperature-sensitive references. Its 170 Ω differential resistance ensures minimal output impedance under varying load currents.
Designed for surface-mount use in SOT323 (SC-70) packaging, it delivers 275 mW total power dissipation on FR4 PCBs and supports non-repetitive surge handling up to 40 W for 100 µs pulses, making it suitable for transient suppression and regulated biasing in compact DC/DC converter feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V nominal; 12.7–13.3 V min/max range defines regulation window for precision 13 V reference generation |
| Tolerance | ±2 % (B-series); guarantees voltage accuracy within ±0.26 V at 25 °C for high-fidelity feedback loops |
| Differential Resistance (rdif) | 170 Ω max at IZ = 5 mA; limits output impedance variation under load current changes |
| Reverse Leakage (IR) | 100 nA max at VR = 8 V; enables low-current standby operation without significant quiescent loss |
| Power Dissipation (Ptot) | 275 mW max on FR4 PCB; sets maximum continuous power handling for thermal design in space-constrained layouts |
| Temperature Coefficient (SZ) | +9.4 mV/K at IZ = 5 mA; quantifies voltage drift per degree Celsius for ambient-compensated designs |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; defines anode-cathode drop during forward conduction in clamp or protection roles |
Pinout & Package
Package: SOT323 (SC-70), leadless surface-mount plastic package with 3 terminals, 1.3 mm × 1.8 mm footprint, 0.65 mm pitch, and 0.25 mm terminal thickness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Internally isolated terminal; must remain unconnected to avoid parasitic coupling or mechanical stress |
| 3 | Cathode (K) | Reverse-bias voltage reference node; ties to regulated output or feedback divider in shunt regulator topologies |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants, reducing need for post-regulation trimming in precision analog supplies |
| Low 100 nA reverse leakage at 8 V | Minimizes current draw in high-impedance reference nodes, preserving battery life in portable instrumentation |
| 170 Ω differential resistance | Stabilizes output voltage against load transients in feedback paths of switching regulators and LDOs |
| SOT323 ultra-small package | Supports high-density PCB layouts in space-constrained applications such as wearables and sensor modules |
| +9.4 mV/K temperature coefficient | Allows predictable thermal drift modeling for compensation in temperature-stable reference designs |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Circuit |
|---|---|
|
Use Scenario: Used in the feedback divider of a 13 V-output buck converter to set output voltage via optocoupler-coupled secondary-side regulation. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 13 V threshold for error amplifier comparison. Use Value: ±2 % tolerance ensures output stays within ±0.26 V across production units without calibration. |
Use Scenario: Placed across a 12 V rail to limit transient spikes above 13.3 V during hot-plug events in industrial control I/O modules. IC Role / Device Role / Timing Role: Passive overvoltage protection element clamping excess energy into ground path. Use Value: 40 W non-repetitive surge rating absorbs 100 µs transients without degradation. |
| Low-Power Sensor Biasing | Reference Voltage for ADC |
|
Use Scenario: Supplies stable 13 V bias to a piezoresistive pressure sensor bridge in a battery-powered environmental monitor. IC Role / Device Role / Timing Role: Precision voltage source establishing excitation potential for ratiometric measurement. Use Value: 100 nA leakage prevents loading of high-impedance sensor outputs at standby. |
Use Scenario: Provides 13 V reference to a 12-bit SAR ADC in a programmable logic controller analog input module. IC Role / Device Role / Timing Role: External voltage reference setting full-scale conversion range independent of supply rails. Use Value: +9.4 mV/K coefficient allows software-based temperature compensation using onboard thermal sensor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-C13 | ±5 % tolerance (12.4–14.1 V range); higher 200 nA leakage at 8 V; identical SOT323 package and thermal specs | Acceptable where cost sensitivity outweighs regulation accuracy; less suitable for closed-loop feedback requiring tight setpoint control | Select when budget constraints dominate and ±0.7 V regulation window is acceptable in final system tolerance stack-up |
| MMSZ4687T1G | 13 V nominal, ±5 %, 150 Ω rdif, 100 nA leakage, SOD-123 package (larger footprint, 2.7 × 1.6 mm) | Higher power rating (500 mW) but incompatible with ultra-dense layouts requiring SOT323 size | Choose only if board layout permits larger package and higher power margin is required for sustained 13 V clamping |
Compared with BZX84W-C13, the BZX84W-B13F offers tighter voltage control essential for feedback accuracy; versus MMSZ4687T1G, it trades power headroom for miniaturization-critical in wearable and IoT edge nodes where PCB area is constrained.
Availability
BZX84W-B13F is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp circuit, and low-power sensor biasing requiring stable component supply across high-mix, low-volume production runs.
Supply support for BZX84W-B13F 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, with leadership in automotive-qualified and standard-grade components for industrial and consumer markets.
The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for stable voltage regulation and clamping in compact SMT applications where precision, consistency, and manufacturability are prioritized.
FAQ
What is the maximum continuous reverse current the BZX84W-B13F can handle at 25 °C?
The BZX84W-B13F has a maximum continuous forward current rating of 200 mA, but its Zener operation relies on controlled reverse current. At 25 °C ambient, its 275 mW power limit restricts continuous reverse current to approximately 21 mA (275 mW ÷ 13 V), assuming full Zener voltage drop and no derating. This value decreases linearly with rising junction temperature.
Can the not-connected (n.c.) pin be used for mechanical anchoring or thermal relief?
No-the Pin 2 n.c. terminal is internally isolated and not bonded to any die structure. Using it for solder anchoring risks mechanical stress-induced die fracture or delamination. Thermal relief must be achieved through copper pour under the cathode/anode pads per Nexperia's recommended SOT323 footprint, not via the n.c. pad.
How does the +9.4 mV/K temperature coefficient affect long-term voltage stability?
A +9.4 mV/K coefficient means the Zener voltage increases by 9.4 mV per Kelvin rise in junction temperature. Over a 50 °C ambient shift (e.g., 25 °C to 75 °C), this causes ~470 mV upward drift. System-level compensation-such as pairing with a negative-TC component or digital calibration-is required for sub-10 mV total drift across operating temperature ranges.
Is BZX84W-B13F suitable for automotive applications?
No-this part is explicitly marked "non-automotive qualified" in Nexperia's revision history. It lacks AEC-Q101 qualification, automotive-grade screening, and extended temperature validation. For automotive use, Nexperia offers the -Q qualified BZX84W-Q series with identical electrical specs but certified reliability for under-hood and infotainment systems.
BZX84W-B13F 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):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-B13F FAQ
1.How can I place an order for BZX84W-B13F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-B13F 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-B13F reliable?
The price and inventory of BZX84W-B13F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-B13F is usually 5 days.
3.What payment methods are accepted for BZX84W-B13F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-B13F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-B13F?
BZX84W-B13F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-B13F 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-B13F?
For technical support, including BZX84W-B13F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-B13F requirements.
6.How does Aetrix verify that BZX84W-B13F is sourced from the original manufacturer or authorized distributors?
All BZX84W-B13F 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-B13F meets industry standards.
7.What is the process for return or replacement of BZX84W-B13F?
All BZX84W-B13F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-B13F, 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-B13F part is unused and in its original packaging.
Return procedure for BZX84W-B13F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-B13F Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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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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