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Nexperia USA Inc. BZX84W-C13X
- Part No.:
- BZX84W-C13X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C13X.pdf
- Description:
- DIODE ZENER 13V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:5,904
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Product details
Overview
BZX84W-C13X from Nexperia is a ±5% tolerance Zener diode with 13 V nominal regulation voltage, 170 Ω differential resistance at 5 mA, and 9.4 mV/K temperature coefficient, housed in an SOT323 (SC-70) package for precision voltage reference and clamping in low-power analog circuits.
For engineers reviewing the BZX84W-C13X datasheet, BZX84W-C13X pinout, BZX84W-C13X application, or BZX84W-C13X equivalent, this device serves as a stable 13 V shunt regulator in power supply feedback paths, overvoltage protection circuits, and voltage-level translation where tight thermal drift and low capacitance (2.5 pF) are critical.
Technical Context
This Zener operates in reverse breakdown mode with a specified test current of 5 mA, delivering regulated output across ambient temperatures from −55 °C to +150 °C. Its 170 Ω dynamic impedance ensures minimal output voltage variation under load shifts.
The device exhibits a positive temperature coefficient of +9.4 mV/K at 5 mA, enabling predictable drift compensation in multi-diode references. With 2.5 pF junction capacitance at 0 V and 1 MHz, it maintains signal integrity in high-frequency clamp and waveform shaping applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V nominal, ±5% tolerance (12.4 V to 14.1 V); defines precise clamping threshold in shunt regulation |
| Differential Resistance (rdif) | 170 Ω at IZ = 5 mA; determines output voltage stability under varying load current |
| Temperature Coefficient (SZ) | +9.4 mV/K at IZ = 5 mA; quantifies voltage drift per degree Celsius for thermal design margining |
| Junction Capacitance (Cd) | 2.5 pF at f = 1 MHz, VR = 0 V; enables use in >100 MHz signal conditioning without loading effects |
| Reverse Current (IR) | 100 nA at VR = 8 V; ensures low leakage in high-impedance bias networks |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4 PCB; sets maximum continuous DC power handling in SMT layout |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA; defines conduction loss when used in forward-biased protection paths |
Pinout & Package
SOT323 (SC-70) leadless surface-mount plastic package: 1.35 mm × 1.75 mm footprint, 0.65 mm pitch, 0.9 mm height, optimized for automated reflow assembly and space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-bias 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 mask required |
| 3 | Cathode (K) | Reverse-bias terminal; ties to regulated output node and current-limiting resistor in standard shunt topology |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables cost-effective selection for non-critical 13 V reference applications without trimming |
| Low 2.5 pF junction capacitance | Preserves bandwidth in RF detector, fast transient clamp, and high-speed logic interface circuits |
| 150 °C maximum junction temperature | Supports operation in thermally aggressive environments including industrial control and automotive under-hood modules |
| Non-repetitive peak reverse power: 40 W | Withstands short-duration ESD or surge events (100 µs pulse) without degradation |
| FR4 PCB thermal resistance: 455 K/W | Guides copper pour sizing and thermal relief design for reliable 275 mW steady-state dissipation |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-derived auxiliary supplies. IC Role / Device Role / Timing Role: Shunt reference element in TL431-like feedback loop, setting error amplifier reference point. Use Value: 13 V Zener voltage provides headroom for optocoupler LED drive while maintaining tight regulation via 170 Ω rdif. |
Use Scenario: Protecting microcontroller I/O pins against 15 V transients on industrial sensor lines. IC Role / Device Role / Timing Role: Passive clamping diode placed between signal line and 13 V rail, diverting excess energy to ground. Use Value: 100 nA leakage at 8 V ensures negligible loading on high-impedance sensor outputs during normal operation. |
| Voltage-Level Translation | Waveform Shaping Circuit |
Use Scenario: Converting 24 V logic signals to 13 V compatible levels for analog front-end input stages. IC Role / Device Role / Timing Role: Bidirectional level translator using forward conduction (0.9 V drop) and reverse clamping (13 V limit). Use Value: Matched forward/reverse thresholds enable clean transition with <10 ns edge distortion due to 2.5 pF Cd. |
Use Scenario: Generating symmetrical clipping in audio preamplifier limiter stages. IC Role / Device Role / Timing Role: Dual-Zener clamp (back-to-back configuration) defining upper/lower amplitude bounds. Use Value: +9.4 mV/K temperature coefficient allows predictable gain compression tracking across −40 °C to +85 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5243B | 13 V, ±5%, 150 Ω rdif, 2.0 pF Cd, SOT-23 package | Lower dynamic impedance improves regulation accuracy but larger SOT-23 footprint consumes 2.5× board area | Select when tighter voltage stability outweighs PCB space constraints |
| Vishay BZX84-C13 | 13 V, ±5%, 170 Ω rdif, 2.5 pF Cd, same SOT323 package, RoHS-compliant | Identical electrical specs and footprint; differs only in manufacturer qualification and traceability documentation | Choose for dual-sourcing continuity or specific supply-chain compliance requirements |
Compared with MMBZ5243B, BZX84W-C13X trades 20 Ω higher dynamic impedance for 40% smaller PCB area; versus BZX84-C13, it offers identical performance with updated Nexperia reliability screening and extended temperature validation.
Availability
BZX84W-C13X is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface protection circuits, and analog signal conditioning requiring stable component supply with guaranteed long-term manufacturability.
Supply support for BZX84W-C13X 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 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, high-reliability voltage regulation and clamping in space-constrained SMT designs across commercial and industrial temperature ranges.
FAQ
What is the maximum continuous reverse current the BZX84W-C13X can handle at 25 °C?
The device supports up to 200 mA forward current, but for Zener operation, the recommended continuous reverse current is limited by power dissipation: at 13 V, IZ ≤ 21.2 mA ensures Ptot stays within 275 mW. Exceeding this risks thermal runaway due to its +9.4 mV/K coefficient.
Can BZX84W-C13X be used in place of a 12 V Zener for improved noise immunity?
No-its 13 V nominal Zener voltage is fixed and not interchangeable with 12 V types. Substituting would shift regulation threshold by 1 V, potentially causing undervoltage lockout or incorrect comparator triggering. Use BZX84W-C12X for 12 V applications.
Does the n.c. pin (Pin 2) require PCB routing or thermal relief?
No-Pin 2 is internally unconnected and must remain electrically isolated. No copper trace, solder mask opening, or thermal relief is needed; standard SOT323 footprint (Fig. 9) treats it as a mechanical land only.
How does the 2.5 pF junction capacitance affect high-frequency performance?
At 100 MHz, the capacitive reactance is ~637 Ω, making the diode appear as a high-impedance shunt-ideal for RF envelope detection or fast transient suppression without signal attenuation. Above 500 MHz, parasitic inductance dominates behavior.
BZX84W-C13X 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:
- ±5%
- 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-C13X FAQ
1.How can I place an order for BZX84W-C13X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C13X 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-C13X reliable?
The price and inventory of BZX84W-C13X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C13X is usually 5 days.
3.What payment methods are accepted for BZX84W-C13X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C13X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C13X?
BZX84W-C13X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C13X 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-C13X?
For technical support, including BZX84W-C13X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C13X requirements.
6.How does Aetrix verify that BZX84W-C13X is sourced from the original manufacturer or authorized distributors?
All BZX84W-C13X 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-C13X meets industry standards.
7.What is the process for return or replacement of BZX84W-C13X?
All BZX84W-C13X units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C13X, 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-C13X part is unused and in its original packaging.
Return procedure for BZX84W-C13X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C13X Tags
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