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Nexperia USA Inc. BZX84-B15,215
- Part No.:
- BZX84-B15,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-B15,215.pdf
- Description:
- DIODE ZENER 15V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:41,864
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Product details
Overview
BZX84-B15,215 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 15 V nominal breakdown voltage at 5 mA test current, 250 mW total power dissipation, and 75 Ω maximum differential resistance - used for precision low-power voltage reference and overvoltage protection in power supply feedback loops and sensor biasing circuits.
For engineers reviewing the BZX84-B15,215 datasheet, BZX84-B15,215 pinout, BZX84-B15,215 application, or BZX84-B15,215 equivalent, key selection considerations include its 15 V Zener voltage tolerance (±2 %), thermal resistance (330 K/W junction-to-solder-point), non-repetitive peak reverse power capability (40 W), and SOT23-compatible footprint for space-constrained PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across a load by conducting reverse current when input exceeds its 15 V Zener threshold. Its temperature coefficient of +9.2 mV/K at 5 mA enables predictable drift compensation in mid-voltage reference designs.
The diode exhibits 0.7 μA maximum reverse leakage at 12 V and 200 Ω typical dynamic impedance at 1 mA, supporting stable regulation under light-load conditions. Its 150 °C maximum junction temperature and FR4 PCB-mount thermal profile (Rth(j-a) = 500 K/W) define safe operating boundaries for continuous and pulsed operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.7 V to 15.3 V at IZ = 5 mA - defines tight ±2 % regulation window for stable reference generation |
| Differential Resistance (rdif) | ≤75 Ω at IZ = 5 mA - ensures minimal output voltage shift under varying load current |
| Reverse Leakage (IR) | ≤0.7 μA at VR = 12 V - guarantees low quiescent current in standby or high-impedance bias networks |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous DC power handling in standard mounting |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - supports transient surge suppression without failure |
| Junction Temperature (Tj) | −55 °C to +150 °C - enables operation in industrial ambient environments with thermal margin |
| Thermal Resistance (Rth(j-sp)) | 330 K/W - quantifies heat transfer efficiency from junction to cathode solder point for thermal design |
Pinout & Package
Package: SOT23 (TO-236AB), 3-lead surface-mount plastic package with standard footprint per Figure 12 (reflow) and Figure 13 (wave soldering); dimensions: 2.9 mm × 1.3 mm × 1.0 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener configuration |
| 2 | Not Connected (n.c.) | Internally unconnected lead; must remain floating - no PCB trace or pad required |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and serves as primary heat path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants (BZX84-C15), reducing need for post-regulation trimming |
| Low differential resistance (≤75 Ω) | Maintains <±10 mV output variation across 1–10 mA load current range in feedback applications |
| High non-repetitive surge rating (40 W) | Withstands ESD and line transients without degradation when used in clamp configurations |
| SOT23 footprint compatibility | Supports automated placement and reflow on high-density boards with industry-standard land pattern |
| 150 °C max junction temperature | Allows reliable operation in enclosed enclosures or near heat-generating components |
Applications
| Power Supply Feedback Reference | Sensor Biasing Network |
|---|---|
|
Use Scenario: Stabilizing output voltage in adjustable linear regulators (e.g., LM317) via resistor divider feedback. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 15 V threshold for error amplifier comparison. Use Value: ±2 % tolerance ensures output accuracy within ±0.3 V over temperature, eliminating calibration steps. |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or bridge sensors. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing higher-cost IC references in analog front-ends. Use Value: 0.7 μA leakage minimizes measurement error in high-impedance sensor interfaces. |
| Overvoltage Clamp Protection | Microcontroller I/O Level Translation |
|
Use Scenario: Protecting ADC inputs or communication lines from transient overvoltage events. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting surge energy before downstream circuit damage. Use Value: 40 W non-repetitive peak power rating absorbs 100 μs surges up to 15 V × 2.67 A without failure. |
Use Scenario: Translating 3.3 V logic signals to 15 V interface levels for legacy industrial modules. IC Role / Device Role / Timing Role: Passive level-shifter using Zener forward conduction (VF ≤ 0.9 V) and reverse clamping. Use Value: Dual-mode operation (forward + reverse) enables bidirectional signal conditioning with single component. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5245BS-7-F | 15 V ±5 % tolerance; 225 mW Ptot; 100 Ω rdif | Higher voltage drift and lower surge rating reduce stability in precision feedback paths | Acceptable where cost sensitivity outweighs regulation accuracy requirements |
| Vishay BZX84-C15-TP | 15 V ±5 % tolerance; same SOT23 package; 250 mW Ptot | Looser tolerance increases output variation; higher leakage (≤5 μA at 12 V) | Preferred only for non-critical clamping where tighter tolerance is unnecessary |
Compared with BZX84-B15,215, the MMBZ5245BS-7-F offers lower cost but sacrifices 3× higher dynamic impedance and reduced thermal robustness, while the BZX84-C15-TP trades ±2 % precision for broader availability - making the BZX84-B15,215 optimal for designs requiring stable 15 V reference with minimal board area.
Availability
BZX84-B15,215 is available at Aetrix Electronics and suitable for power supply feedback reference, sensor biasing networks, overvoltage clamp protection, and microcontroller I/O level translation requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX84-B15,215 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 industrial-grade components.
The BZX84 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for low-power voltage reference and transient protection in space-constrained consumer, industrial, and computing applications.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX84-B15,215 has a maximum continuous forward current (IF) of 200 mA, but as a Zener regulator it operates in reverse bias. Its steady-state reverse current is limited by power dissipation: at 15 V, maximum DC reverse current is 16.7 mA (250 mW ÷ 15 V), assuming ambient temperature ≤25 °C and proper PCB thermal design.
Can this part replace a BZX84-A15 in a precision reference circuit?
No - the BZX84-A15 offers ±1 % tolerance (14.85–15.15 V), while the BZX84-B15,215 provides ±2 % (14.7–15.3 V). In precision references where output accuracy is critical, the wider tolerance introduces up to 0.6 V additional uncertainty, potentially exceeding system error budgets.
Is Pin 2 electrically functional or a mechanical dummy lead?
Pin 2 is explicitly marked "n.c." (not connected) in the official Nexperia datasheet and internal construction. It is a mechanical dummy lead with no internal bond wire or silicon connection - must remain unconnected on PCB to avoid unintended parasitic coupling or thermal stress.
How does temperature affect its Zener voltage in real-world operation?
At IZ = 5 mA, the BZX84-B15,215 has a temperature coefficient of +9.2 mV/K. Over a −40 °C to +125 °C ambient range, this results in approximately ±1.5 V total drift - a design consideration for wide-temperature applications, mitigated by using it in temperature-compensated circuits or with low-tempco bias networks.
BZX84-B15,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 250 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:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-B15,215 FAQ
1.How can I place an order for BZX84-B15,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-B15,215 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 BZX84-B15,215 reliable?
The price and inventory of BZX84-B15,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B15,215 is usually 5 days.
3.What payment methods are accepted for BZX84-B15,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B15,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-B15,215?
BZX84-B15,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-B15,215 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 BZX84-B15,215?
For technical support, including BZX84-B15,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B15,215 requirements.
6.How does Aetrix verify that BZX84-B15,215 is sourced from the original manufacturer or authorized distributors?
All BZX84-B15,215 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 BZX84-B15,215 meets industry standards.
7.What is the process for return or replacement of BZX84-B15,215?
All BZX84-B15,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B15,215, 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 BZX84-B15,215 part is unused and in its original packaging.
Return procedure for BZX84-B15,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-B15,215 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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