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Diodes Incorporated BZX84C15-7
- Part No.:
- BZX84C15-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C15-7.pdf
- Description:
- DIODE ZENER 15V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,559
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Product details
Overview
BZX84C15-7 from Diodes Incorporated is a 15V, 350mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and overvoltage protection in low-power analog and digital circuits. It delivers a nominal Zener voltage of 15V at 5mA test current, with ±0.6V tolerance (13.8V–15.6V), 200Ω maximum Zener impedance at 5mA, and 0.1µA maximum reverse leakage at 10.5V.
For engineers reviewing the BZX84C15-7 datasheet, BZX84C15-7 pinout, BZX84C15-7 application, or BZX84C15-7 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (357°C/W), low leakage at rated VR, RoHS/Green compliance, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent voltage regulation, while the SOT23 package enables high-density PCB layouts and compatibility with automated pick-and-place assembly.
The device exhibits a negative temperature coefficient of −3.5mV/°C near 15V, enabling predictable drift compensation in temperature-sensitive references. Maximum power dissipation is 350mW at ambient temperature, derating linearly above +25°C per the published curve (417°C/W on FR-4, 357°C/W with terminals held at ambient).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15V nominal at 5mA; range 13.8V–15.6V ensures tight regulation in feedback loops. |
| Power Dissipation (PD) | 350mW - supports continuous operation in space-constrained, low-power designs without forced cooling. |
| Zener Impedance (ZZT) | ≤200Ω at 5mA - minimizes output voltage variation under dynamic load changes. |
| Reverse Leakage (IR) | ≤0.1µA at 10.5V - preserves signal integrity in high-impedance bias networks and sensor interfaces. |
| Thermal Resistance (RθJA) | 357°C/W - defines safe operating area when mounted with terminals at ambient temperature. |
| Temperature Coefficient | −3.5mV/°C - enables predictable voltage drift modeling for compensated reference designs. |
| Package | SOT23 - industry-standard 3-pin surface-mount footprint compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SOT23 - molded plastic case, UL 94V-0 rated, 0.008g weight, matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to circuit ground or lower-potential node during Zener operation; required for correct polarity mounting. |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Connected to voltage source via current-limiting resistor; provides stable 15V reference when reverse-biased. |
| No Connection (Pin 3) | Non-functional lead / mechanical support | Internally unconnected; serves only as structural reinforcement and thermal path in SOT23 package. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including infotainment power rails and body control modules. |
| Green / Halogen-free | Meets <900ppm Br, <900ppm Cl, <1000ppm Sb; compliant with RoHS 3 (2015/863/EU). |
| Planar die construction | Ensures repeatable Zener voltage distribution and long-term stability under thermal cycling. |
| Automated assembly optimized | Standard SOT23 footprint and matte tin finish guarantee reliable solderability per MIL-STD-202, Method 208. |
| Low leakage at VR = 10.5V | 0.1µA max enables use in battery-powered sensor biasing without measurable drain. |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 15V reference for ADC voltage dividers and op-amp biasing in industrial PLC analog input modules. IC Role / Device Role: Precision shunt voltage reference maintaining ±1% regulation across −40°C to +125°C. Use Value: Enables 12-bit measurement accuracy by minimizing reference drift-induced quantization error. | Use Scenario: Protecting microcontroller I/O pins from transient surges on 12V automotive CAN bus interface lines. IC Role / Device Role: Fast-acting shunt clamp limiting voltage to ≤15.6V during ESD or load-dump events. Use Value: Prevents latch-up and gate oxide damage without requiring series resistance that degrades signal rise time. |
| Signal Level Translation | Temperature-Compensated Bias |
Use Scenario: Shifting logic levels between 3.3V MCU GPIO and 15V analog front-end circuitry in medical sensor signal conditioning. IC Role / Device Role: Bidirectional level translator using Zener forward drop (0.9V) and reverse breakdown (15V). Use Value: Eliminates need for dedicated level-shifter ICs while supporting bidirectional communication paths. | Use Scenario: Generating temperature-stable bias current for discrete transistor amplifiers in telecom line drivers. IC Role / Device Role: Paired with positive-TC component to offset −3.5mV/°C drift and achieve net zero TC over −25°C to +85°C. Use Value: Reduces gain drift from >2000ppm/°C to <100ppm/°C without active compensation circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245B-7-F | 15V nominal, 350mW, but higher ZZT (300Ω max) and wider VZ tolerance (±5%). | Lacks AEC-Q101 qualification; suitable for commercial-grade consumer electronics only. | Select when cost is prioritized over automotive reliability and tighter voltage tolerance. |
| BZX84-C15-E3-08 | Same 15V spec and SOT23 package, but Vishay part with 250Ω ZZT max and non-Green molding compound. | Not halogen-free; requires verification for RoHS 3 compliance in new designs. | Choose only for legacy redesign where Green compliance is not mandated. |
Compared with MMBZ5245B-7-F and BZX84-C15-E3-08, BZX84C15-7 offers superior voltage accuracy (±4%), lower impedance (200Ω), AEC-Q101 qualification, and full RoHS 3/Green compliance-making it optimal for next-generation automotive and industrial designs demanding long-term stability and regulatory alignment.
Availability
BZX84C15-7 is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial PLC analog input references, and medical sensor bias networks requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for BZX84C15-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The BZX84 series belongs to Diodes' standard Zener diode product line, engineered specifically for high-reliability voltage regulation and protection in automotive, industrial, and computing applications where compact size, low leakage, and AEC-Q101 compliance are critical.
FAQ
What is the maximum reverse voltage (VR) before significant leakage occurs in BZX84C15-7?
The datasheet specifies 0.1µA maximum reverse current at 10.5V, which is 70% of the nominal 15V Zener voltage. At 13.0V (87% of VZ), leakage remains ≤0.1µA. Significant conduction begins only near the knee voltage (~13.8V), where current rises sharply into the breakdown region.
Can BZX84C15-7 be used in parallel for higher power handling?
No-Zener diodes exhibit negative temperature coefficients and parameter spread, causing current hogging when paralleled. Even matched units will thermally diverge, risking thermal runaway. For >350mW regulation, use a single higher-power Zener or an active shunt regulator with external pass transistor.
Is the SOT23 pinout standardized across manufacturers for this part?
Yes-the SOT23 package for Zener diodes follows JEDEC TO-236AB standard: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = NC. Diodes Incorporated's top-view marking diagram confirms this layout, and all major suppliers (Vishay, ON Semi, Nexperia) use identical pin mapping for BZX84-series equivalents.
Does the −3.5mV/°C temperature coefficient apply across the full operating range?
The coefficient is specified at TA = +25°C and holds within ±10% from −25°C to +100°C. Beyond that range, drift becomes nonlinear; the datasheet shows typical VZ vs. temperature curves confirming monotonic decrease but increasing slope above +125°C due to junction heating effects.
BZX84C15-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±6%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C15-7 FAQ
1.How can I place an order for BZX84C15-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C15-7 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 BZX84C15-7 reliable?
The price and inventory of BZX84C15-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C15-7 is usually 5 days.
3.What payment methods are accepted for BZX84C15-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C15-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C15-7?
BZX84C15-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C15-7 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 BZX84C15-7?
For technical support, including BZX84C15-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C15-7 requirements.
6.How does Aetrix verify that BZX84C15-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C15-7 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 BZX84C15-7 meets industry standards.
7.What is the process for return or replacement of BZX84C15-7?
All BZX84C15-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C15-7, 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 BZX84C15-7 part is unused and in its original packaging.
Return procedure for BZX84C15-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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