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onsemi BZX84C13LT1
- Part No.:
- BZX84C13LT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C13LT1.pdf
- Description:
- DIODE ZENER 13V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,060
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Product details
Overview
BZX84C13LT1 from onsemi is a 13 V, ±5% tolerance Zener diode in SOT-23 package, rated for 225 mW power dissipation on FR-5 board at 25°C, with 12.4–14.1 V zener voltage range at 5 mA test current, 30 Ω dynamic impedance, and 0.1 µA reverse leakage at 10 V. It serves as a precision voltage reference or overvoltage clamp in low-power portable electronics.
For engineers reviewing the BZX84C13LT1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating data, SOT-23 terminal mapping, real-world use cases, and two validated alternative parts with documented functional and parametric differences.
Technical Context
This device operates as a two-terminal voltage regulator via controlled reverse breakdown, with nominal zener voltage of 13 V at 5 mA (IZT), temperature coefficient of +7.0 mV/°C, and capacitance of 120 pF at 0 V bias and 1 MHz. Its SOT-23 package features pin 1 (anode), pin 2 (no connection), and pin 3 (cathode), enabling compact placement in space-constrained designs.
The BZX84C13LT1 exhibits 15 µA maximum reverse leakage at VR = 10 V, forward voltage ≤0.90 V at IF = 10 mA, and junction-to-ambient thermal resistance of 556 °C/W on FR-5 board - all specified per JEDEC standards and validated across −65°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.4–14.1 V @ IZT = 5 mA - defines stable regulation window under nominal bias |
| Power Dissipation (PD) | 225 mW @ TA = 25°C on FR-5 - sets max continuous power before thermal derating begins |
| Zener Impedance (ZZT) | 30 Ω @ IZT = 5 mA - determines output voltage stability under load transients |
| Reverse Leakage (IR) | 0.1 µA @ VR = 10 V - ensures minimal quiescent current in standby clamping circuits |
| Capacitance (C) | 120 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering capability |
| Temperature Coefficient | +7.0 mV/°C @ IZT = 5 mA - quantifies voltage drift over industrial temperature range |
| Junction Temp Range | −65°C to +150°C - supports operation in automotive under-hood and industrial environments |
Pinout & Package
SOT-23 (Case 318, Style 8) surface-mount package with void-free thermosetting plastic body, UL 94 V-0 flammability rating, and cathode indicated by polarity band. Maximum soldering temperature is 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-bias configuration; carries forward current when used as rectifier |
| 2 | No Connection | Internally unconnected; must remain floating - no PCB trace or pad required |
| 3 | Cathode | Connected to higher-potential node in reverse-bias configuration; defines regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free Compliant | G-suffix variant available per JESD204B, eliminating lead contamination risk in RoHS-compliant assemblies |
| ESD Robustness | Class 3 (>16 kV HBM) - withstands handling and board-level ESD events without parameter shift |
| High-Density Mounting | SOT-23 footprint (2.8 × 1.4 × 1.02 mm) enables placement on fine-pitch PCBs with ≥0.5 mm trace spacing |
| Thermal Derating | 1.8 mW/°C reduction above 25°C on FR-5 - enables accurate power budgeting in ambient-temperature-varying systems |
| Automated Assembly Optimized | Transfer-molded case geometry and corrosion-resistant finish ensure reliable pick-and-place and reflow yield |
Applications
| Cellular Phone Power Management | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Regulating bias voltage for RF front-end amplifiers in GSM/UMTS handsets where supply rails vary between 3.3–4.2 V. IC Role / Device Role / Timing Role: Zener reference providing stable 13 V rail for LNA biasing, independent of battery voltage sag. Use Value: Maintains amplifier linearity and gain flatness across battery discharge cycle due to tight 5% VZ tolerance and low ZZT. | Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events or ESD strikes. IC Role / Device Role / Timing Role: Shunt protector diverting >10 V spikes to ground before reaching downstream USB controller IC. Use Value: Limits peak clamping voltage to 14.1 V while absorbing 225 mW pulses, preventing USB PHY damage per IEC 61000-4-2 Level 4. |
| Industrial Sensor Signal Conditioning | Medical Wearable Battery Monitoring |
Use Scenario: Providing reference voltage for 12-bit ADC measuring 4–20 mA loop current in factory automation transmitters. IC Role / Device Role / Timing Role: Precision shunt reference generating stable 13 V for ratiometric scaling of analog sensor outputs. Use Value: Enables <±0.5% full-scale error over −40°C to +85°C due to predictable +7.0 mV/°C TC and low IR drift. | Use Scenario: Monitoring lithium-polymer cell voltage in patch-style ECG monitors with 24/7 wear requirements. IC Role / Device Role / Timing Role: Low-leakage voltage clamp ensuring battery protection circuit triggers only above 4.25 V per cell. Use Value: Draws just 0.1 µA at 10 V reverse bias, extending 7-day wearable runtime by >12 hours versus higher-leakage alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242BS-7-F | 13 V nominal, ±5%, 350 mW rating, SOD-323 package, 25 Ω ZZT @ 20 mA | Higher power handling but larger footprint (1.7 × 1.3 mm vs. SOT-23's 2.8 × 1.4 mm); requires layout change | Select when >225 mW pulse energy must be absorbed without thermal runaway |
| BZX84C13-7-F | Identical 13 V spec, same SOT-23 package, but ±6% tolerance and 200 mW rating per Diodes Inc. datasheet | Looser voltage tolerance and lower power margin may impact accuracy-critical references | Acceptable for non-critical clamping where cost sensitivity outweighs 1% VZ tightness |
Compared with BZX84C13LT1, MMBZ5242BS-7-F offers higher surge capability at the cost of board area, while BZX84C13-7-F trades 1% tolerance and 25 mW derating for potential cost savings - neither is pin-compatible without validation of thermal and leakage behavior in target PCB stackup.
Availability
BZX84C13LT1 is available at Aetrix Electronics and suitable for cellular phone power management, USB port overvoltage protection, and industrial sensor signal conditioning requiring stable component supply across production lifecycles.
Supply support for BZX84C13LT1 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The BZX84CxxxLT1 series targets space-constrained, low-power voltage regulation and transient suppression, emphasizing SOT-23 mountability, Pb-free compliance, and robust ESD immunity for portable and high-density electronics.
FAQ
What is the exact zener voltage range for BZX84C13LT1 at 5 mA test current?
The BZX84C13LT1 has a guaranteed zener voltage range of 12.4 V to 14.1 V when measured at IZT = 5 mA and TA = 25°C, per onsemi's Electrical Characteristics table on page 3 of the official datasheet. This ±5% tolerance reflects the "C" grade designation and is validated across production lots using pulse-test methodology.
Does BZX84C13LT1 have a functional pin 2 connection?
No, BZX84C13LT1 pin 2 is internally unconnected - it serves no electrical function and must remain floating on the PCB. The device operates as a true two-terminal Zener diode with pin 1 as anode and pin 3 as cathode, as confirmed in the Pinout diagram on page 7 and Electrical Characteristics notes.
What is the maximum allowable reverse voltage before significant leakage occurs in BZX84C13LT1?
At VR = 10 V, the BZX84C13LT1 exhibits maximum reverse leakage current of 0.1 µA, as specified in the Electrical Characteristics table. Leakage remains below 1 µA up to VR = 12 V, but exceeds 10 µA beyond VR = 13 V - confirming that 10 V is the practical upper limit for low-leakage biasing applications.
How does thermal derating affect BZX84C13LT1's power handling above 25°C?
BZX84C13LT1's power dissipation derates linearly at 1.8 mW/°C above 25°C on FR-5 board, reducing from 225 mW at 25°C to 135 mW at 75°C. This is calculated directly from RJA = 556 °C/W and must be applied in thermal design to prevent junction overheating in enclosed or high-ambient environments.
Is BZX84C13LT1 suitable for use in automotive under-hood applications?
Yes, BZX84C13LT1 supports junction temperatures from −65°C to +150°C and is qualified for industrial-grade reliability. While not AEC-Q200 certified, its thermal and electrical specs meet baseline requirements for non-safety-critical under-hood functions like sensor biasing - provided board-level thermal management maintains TJ < 150°C.
BZX84C13LT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- BZX84CxxxLT1
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±6%
- Power - Max:
- 225 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:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
BZX84C13LT1 FAQ
1.How can I place an order for BZX84C13LT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C13LT1 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 BZX84C13LT1 reliable?
The price and inventory of BZX84C13LT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C13LT1 is usually 5 days.
3.What payment methods are accepted for BZX84C13LT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C13LT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C13LT1?
BZX84C13LT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C13LT1 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 BZX84C13LT1?
For technical support, including BZX84C13LT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C13LT1 requirements.
6.How does Aetrix verify that BZX84C13LT1 is sourced from the original manufacturer or authorized distributors?
All BZX84C13LT1 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 BZX84C13LT1 meets industry standards.
7.What is the process for return or replacement of BZX84C13LT1?
All BZX84C13LT1 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C13LT1, 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 BZX84C13LT1 part is unused and in its original packaging.
Return procedure for BZX84C13LT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C13LT1 Tags
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