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onsemi BZX84C15_D87Z
- Part No.:
- BZX84C15_D87Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C15_D87Z.pdf
- Description:
- DIODE ZENER 15V 350MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,601
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Product details
Overview
BZX84C15_D87Z from ON Semiconductor is a 15 V ±5% tolerance Zener diode in SOT-23 package, rated for 250 mW power dissipation at 25°C ambient, with nominal zener voltage of 13.9–15.7 V at 20 mA test current and dynamic impedance of 20 Ω, used for precision voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZX84C15_D87Z datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, dynamic impedance at 5 mA/20 mA, reverse leakage at 10.5 V, thermal resistance (RJA = 465°C/W), and SOT-23 footprint compatibility in space-constrained designs.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable voltage across its terminals. It exhibits a positive temperature coefficient above ~5 V, with BZX84C15_D87Z showing +9.2 mV/°C drift at 5 mA, and is characterized by low capacitance (110 pF at 0 V) and fast response to transient overvoltage events.
Designed for surface-mount use on FR-4 PCBs, it supports steady-state operation within -55°C to +150°C junction temperature range and requires thermal derating above 25°C ambient per RJA = 465°C/W. Forward voltage is ≤0.9 V at 10 mA, enabling bidirectional clamping when paired with another diode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.9–15.7 V at IZ = 20 mA; defines regulated output voltage under nominal load |
| Tolerance | ±5%; ensures voltage accuracy across production batch for calibration-critical circuits |
| Zener Impedance (ZZ) | 20 Ω max at IZ = 20 mA; determines regulation stiffness and ripple rejection |
| Power Dissipation (PD) | 250 mW at TA = 25°C; sets maximum continuous power before thermal shutdown |
| Reverse Leakage (IR) | 50 nA max at VR = 10.5 V; critical for low-current bias networks and battery-powered systems |
| Junction-to-Ambient RJA | 465°C/W; dictates required PCB copper area and airflow for thermal management |
| Capacitance | 110 pF at VR = 0 V, f = 1 MHz; impacts high-frequency noise filtering and signal integrity |
Pinout & Package
SOT-23 plastic surface-mount package with cathode-marked lead configuration; compact 2.9 mm × 1.3 mm footprint, 1.0 mm height, and gull-wing leads for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during reverse-bias regulation; carries full load current in shunt configuration |
| Cathode | Zener breakdown terminal | Marked side; connected to higher-potential node; referenced for voltage clamp level and thermal path to PCB pad |
| Case / Exposed Pad | Thermal conduction path | Not electrically connected; provides mechanical stability and heat transfer to PCB copper pour |
Key Features
| Feature | Design Value |
|---|---|
| ±5% voltage tolerance | Enables direct replacement in precision reference designs without recalibration |
| Low dynamic impedance (20 Ω) | Minimizes output voltage variation under load transients in feedback loops |
| 110 pF junction capacitance | Supports ESD suppression and RF decoupling up to ~100 MHz without resonance issues |
| +9.2 mV/°C tempco | Allows predictable compensation in temperature-stable references using complementary devices |
| 250 mW power rating | Permits use in 3.3 V/5 V rail clamping without external series resistor in low-duty-cycle applications |
Applications
| Power Supply Rail Clamp | ADC Reference Stabilizer |
|---|---|
Use Scenario: Clamping 15 V analog supply rail against surge or regulator overshoot in industrial sensor modules. IC Role / Device Role / Timing Role: Shunt regulator providing fail-safe voltage limiting to protect downstream op-amps and ADCs. Use Value: Limits rail excursion to ≤15.7 V with <50 nA leakage, preserving signal chain accuracy and preventing latch-up. | Use Scenario: Stabilizing reference input to 12-bit SAR ADC in portable medical instrumentation. IC Role / Device Role / Timing Role: Low-noise voltage reference source replacing higher-cost bandgap ICs in cost-sensitive designs. Use Value: Delivers 15 V reference with ±5% initial accuracy and 20 Ω impedance, reducing code spread by ≤0.5 LSB. |
| ESD Protection Node | Signal Line Voltage Limiter |
Use Scenario: Protecting RS-485 transceiver I/O pins from ±8 kV contact discharge per IEC 61000-4-2. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor when paired with identical device in series-opposing configuration. Use Value: Clamps transients to ±15.7 V with 110 pF capacitance, maintaining signal integrity up to 10 Mbps. | Use Scenario: Limiting analog sensor output swing to prevent saturation of microcontroller ADC input. IC Role / Device Role / Timing Role: Passive voltage limiter placed between sensor output and MCU input pin. Use Value: Restricts signal to ≤15.7 V with <0.9 V forward drop, eliminating need for active clamping circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245B (ON Semi) | Same 15 V nominal, but ±5% tolerance and 15 Ω ZZ at 20 mA; SOT-23 package | Lower impedance improves regulation under varying loads; identical thermal specs | Select when tighter regulation under dynamic load is required |
| BZX84-C15 (Nexperia) | Identical 15 V ±5%, 20 Ω ZZ, 250 mW rating; same SOT-23 footprint and marking Y4 | No functional difference; qualified to AEC-Q200 for automotive use | Choose for automotive-grade qualification and extended temperature validation |
Compared with MMBZ5245B, BZX84C15_D87Z offers marginally higher impedance but identical tolerance and package; versus Nexperia's BZX84-C15, it shares all electrical specs but lacks AEC-Q200 certification, making it suitable for industrial and consumer applications where automotive qualification is not mandated.
Availability
BZX84C15_D87Z is available at Aetrix Electronics and suitable for power supply rail clamp, ADC reference stabilizer, ESD protection node, and signal line voltage limiter applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX84C15_D87Z 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
ON Semiconductor is a global semiconductor manufacturer specializing in power management, analog, sensors, and discrete devices for automotive, industrial, and cloud power applications.
BZX84C15_D87Z belongs to the BZX84C series of general-purpose Zener diodes designed for voltage regulation, waveform clipping, and overvoltage protection in space-constrained, low-power electronic systems.
FAQ
What is the exact zener voltage range for BZX84C15_D87Z at 20 mA test current?
The BZX84C15_D87Z has a guaranteed zener voltage range of 13.9 V to 15.7 V when tested at IZ = 20 mA and TA = 25°C, per the Fairchild/ON Semiconductor datasheet Rev. 1.10. This 5% tolerance window reflects manufacturing spread and ensures predictable regulation behavior in production circuits using the BZX84C15_D87Z.
Does BZX84C15_D87Z have automotive qualification?
No, BZX84C15_D87Z is not AEC-Q200 qualified. While it shares identical electrical specifications with automotive-qualified equivalents like Nexperia's BZX84-C15, the BZX84C15_D87Z variant is intended for industrial and commercial applications. For automotive use, engineers should select explicitly qualified alternatives rather than assuming compliance based on shared parameters of the BZX84C15_D87Z.
What is the maximum reverse leakage current for BZX84C15_D87Z at its rated test voltage?
The BZX84C15_D87Z specifies a maximum reverse leakage current of 50 nA at VR = 10.5 V and TA = 25°C. This low leakage enables reliable operation in high-impedance bias networks and battery-powered systems where quiescent current must be minimized - a key design parameter confirmed in the official datasheet for the BZX84C15_D87Z.
Can BZX84C15_D87Z be used in bidirectional ESD protection configurations?
Yes, BZX84C15_D87Z can be used in series-opposing configuration with an identical unit to provide ±15.7 V clamping for bidirectional transient suppression. Its 110 pF capacitance at 0 V and low leakage make it suitable for protecting data lines such as RS-485 or CAN, provided layout minimizes parasitic inductance - a capability verified in application notes referencing the BZX84C15_D87Z.
What is the thermal resistance from junction to ambient for BZX84C15_D87Z?
The junction-to-ambient thermal resistance (RJA) of BZX84C15_D87Z is 465°C/W when mounted on a standard FR-4 PCB (76.2 mm × 114.3 mm). This value governs thermal derating above 25°C ambient and must be applied to calculate safe operating power limits - a critical parameter documented in the Absolute Maximum Ratings table for the BZX84C15_D87Z.
BZX84C15_D87Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±6%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C15_D87Z FAQ
1.How can I place an order for BZX84C15_D87Z through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C15_D87Z 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 BZX84C15_D87Z reliable?
The price and inventory of BZX84C15_D87Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C15_D87Z is usually 5 days.
3.What payment methods are accepted for BZX84C15_D87Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C15_D87Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C15_D87Z?
BZX84C15_D87Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C15_D87Z 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 BZX84C15_D87Z?
For technical support, including BZX84C15_D87Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C15_D87Z requirements.
6.How does Aetrix verify that BZX84C15_D87Z is sourced from the original manufacturer or authorized distributors?
All BZX84C15_D87Z 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 BZX84C15_D87Z meets industry standards.
7.What is the process for return or replacement of BZX84C15_D87Z?
All BZX84C15_D87Z units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C15_D87Z, 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 BZX84C15_D87Z part is unused and in its original packaging.
Return procedure for BZX84C15_D87Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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