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NXP Semiconductors BZX284-C68,115
- Part No.:
- BZX284-C68,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-C68,115.pdf
- Description:
- DIODE ZENER 68V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:3,254
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Product details
Overview
BZX284-C68,115 from NXP Semiconductors is a ±5% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 68 V nominal working voltage at IZtest = 2 mA, 400 mW total power dissipation, and 75 Ω typical differential resistance. It serves as a precision low-power voltage reference in power supply feedback paths, overvoltage protection circuits, and analog signal conditioning stages.
For engineers reviewing the BZX284-C68,115 datasheet, BZX284-C68,115 pinout, BZX284-C68,115 application, or BZX284-C68,115 equivalent, this part supports stable regulation in space-constrained industrial sensor interfaces, automotive body electronics, and battery-powered instrumentation where tight voltage tolerance and low leakage (<50 nA at 0.7×VZnom) are critical.
Technical Context
The BZX284-C68,115 operates as a reverse-biased Zener diode with a nominal breakdown voltage of 68 V, specified at 2 mA test current and 25 °C junction temperature. Its thermal resistance (Rth j-a) is 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB, limiting continuous power handling to 400 mW at ambient temperatures up to +75 °C.
It exhibits a positive temperature coefficient of +55 mV/K (typical) at 2 mA, enabling predictable drift compensation in multi-diode reference strings. Reverse leakage remains ≤50 nA at VR = 47.6 V (0.7×68 V), supporting high-impedance bias networks in precision op-amp circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 68 V at IZtest = 2 mA - defines regulated output level in shunt regulator topologies |
| Tolerance | ±5% - allows design margining for 64.6 V to 71.4 V operation across production lots |
| Differential Resistance (rdiff) | 75 Ω (typical) at 2 mA - determines load regulation error under varying current conditions |
| Reverse Leakage Current (IR) | ≤50 nA at VR = 47.6 V - ensures minimal error current in high-gain feedback networks |
| Total Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - sets maximum continuous power before thermal derating applies |
| Package | SOD110 ceramic SMD - 2.1 × 1.4 × 1.6 mm footprint ideal for dense PCB layouts |
| Junction Temperature Range | −65 °C to +150 °C - supports operation in extended-temperature industrial environments |
Pinout & Package
SOD110 is a two-terminal surface-mount ceramic package with cathode marked by a band on one end. The device has no active pins-only an anode and cathode terminal, with polarity critical for correct Zener operation in reverse bias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point in forward bias; connected to lower potential in Zener mode | Must be held at lower voltage than cathode to maintain reverse bias and enable regulation |
| Cathode (banded end) | Current exit point in forward bias; connected to higher potential in Zener mode | Terminal where regulated voltage is referenced; marking aligns with PCB silkscreen polarity |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD110 ceramic package | Enables placement in <1.6 mm height-constrained modules such as smart sensors and wearables |
| ±5% voltage tolerance (C-series) | Reduces BOM complexity vs. tighter-tolerance variants while maintaining stability in non-critical references |
| 400 mW power rating | Supports >10 mA regulation current at 68 V without external heatsinking on standard FR4 |
| ≤50 nA reverse leakage at 0.7×VZ | Minimizes offset errors in high-impedance op-amp reference inputs and comparator thresholds |
| Positive tempco (+55 mV/K) | Allows pairing with negative-tempco components (e.g., transistors) to achieve near-zero drift references |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Voltage Clamp |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 16-bit ADCs in pressure/temperature transmitters operating from 24 V DC rails. IC Role / Device Role / Timing Role: Zener shunt regulator providing 68 V rail clamp and local 5 V reference via resistor divider. Use Value: 75 Ω rdiff limits reference drift to <0.5 LSB across 0–10 mA load variation, preserving measurement accuracy. |
Use Scenario: Protecting LIN bus interface ICs from load-dump transients up to 60 V in door module ECUs. IC Role / Device Role / Timing Role: Overvoltage clamp placed between LIN line and ground, conducting only above 68 V threshold. Use Value: 50 nA leakage at 47.6 V prevents false triggering during normal 12 V operation while clamping fast 100 μs surges. |
| Programmable Logic Controller (PLC) Input Protection | Portable Medical Instrument Power Supervision |
|
Use Scenario: Safeguarding 24 V digital input channels against field-wiring faults and ESD events. IC Role / Device Role / Timing Role: Primary Zener clamp in series with TVS diode, absorbing sustained overvoltages beyond TVS capability. Use Value: 400 mW rating enables handling of 100 ms overvoltage events at 68 V without degradation, extending system uptime. |
Use Scenario: Monitoring lithium-ion battery pack voltage (max 58.8 V) in handheld diagnostic devices with low-quiescent-current design. IC Role / Device Role / Timing Role: Precision voltage threshold detector feeding comparator input for battery undervoltage lockout. Use Value: ±5% tolerance ensures reliable trip point at 64.6–71.4 V, covering full cell stack range while allowing margin for aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-C68 | Same SOD123 package (2.7 × 1.6 mm), 68 V ±5%, but 500 mW rating and 100 Ω rdiff | Higher power handling suits higher-current clamps; larger footprint requires PCB redesign | Select when >400 mW surge energy must be absorbed without thermal shutdown |
| Vishay PLZ68 | SOD123 package, 68 V ±5%, 500 mW, 90 Ω rdiff, AEC-Q200 qualified | Qualified for automotive use; not suitable for cost-sensitive industrial designs without qualification requirements | Choose for automotive-grade programs requiring PPAP documentation and stress-test compliance |
Compared with BZX284-C68,115, the BZT52-C68 offers higher power margin at the cost of larger board area, while the PLZ68 adds automotive qualification but increases procurement lead time and unit cost-making the BZX284-C68,115 optimal for space-limited industrial applications needing proven reliability without certification overhead.
Availability
BZX284-C68,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and portable medical instrumentation requiring stable component supply with consistent parametric performance across manufacturing lots.
Supply support for BZX284-C68,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The BZX284 series was designed for low-power, high-stability voltage reference and overvoltage protection in space-constrained SMD applications-emphasizing ceramic package reliability, tight parametric control, and wide operating temperature support.
FAQ
What is the Zener voltage tolerance of the BZX284-C68,115?
The BZX284-C68,115 has a ±5% tolerance on its nominal 68 V Zener voltage, meaning the actual breakdown voltage falls between 64.6 V and 71.4 V at 2 mA test current and 25 °C. This tolerance is confirmed in Table 2 of the NXP datasheet and applies across the full operating temperature range. The 'C' in the part number explicitly denotes the ±5% series, distinguishing it from the tighter ±2% 'B' variants.
What package type does the BZX284-C68,115 use?
The BZX284-C68,115 uses the SOD110 ceramic surface-mount package-a very small rectangular outline measuring 2.10 × 1.40 × 1.60 mm with a cathode band marking. This package is defined in the NXP package outline drawing (issue date 97-04-14) and differs from plastic SOD-123 or SOD-323 packages in thermal performance and moisture resistance. The SOD110 footprint is essential for accurate PCB layout and reflow profile setup.
What is the maximum reverse leakage current for the BZX284-C68,115?
The BZX284-C68,115 has a maximum reverse leakage current of 50 nA at VR = 47.6 V (0.7 × 68 V), as specified in the Electrical Characteristics table for types BZX284-B/C27 to B/C75. This value is measured at 25 °C and reflects the diode's ability to remain effectively open-circuit below its regulation threshold-critical for minimizing error in high-impedance reference circuits.
Can the BZX284-C68,115 be used in automotive applications?
The BZX284-C68,115 meets industrial temperature requirements (−65 °C to +150 °C junction) and is widely deployed in automotive body electronics such as door modules and lighting controllers. However, it is not AEC-Q200 qualified. For production automotive programs requiring formal qualification, alternatives like Vishay PLZ68 should be considered-while the BZX284-C68,115 remains suitable for prototyping, aftermarket, or non-safety-critical functions.
What is the thermal resistance from junction to ambient for the BZX284-C68,115?
The thermal resistance from junction to ambient (Rth j-a) for the BZX284-C68,115 is 315 K/W when mounted on a standard 11 × 25 × 1.6 mm FR4 PCB, per the Thermal Characteristics table in the NXP datasheet. This value determines the allowable power dissipation at elevated ambient temperatures-for example, at 75 °C ambient, the maximum safe continuous power drops to approximately 250 mW to maintain Tj ≤ 150 °C.
BZX284-C68,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 68 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 160 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 47.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-110
BZX284-C68,115 FAQ
1.How can I place an order for BZX284-C68,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-C68,115 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 BZX284-C68,115 reliable?
The price and inventory of BZX284-C68,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-C68,115 is usually 5 days.
3.What payment methods are accepted for BZX284-C68,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-C68,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-C68,115?
BZX284-C68,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-C68,115 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 BZX284-C68,115?
For technical support, including BZX284-C68,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-C68,115 requirements.
6.How does Aetrix verify that BZX284-C68,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-C68,115 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 BZX284-C68,115 meets industry standards.
7.What is the process for return or replacement of BZX284-C68,115?
All BZX284-C68,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-C68,115, 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 BZX284-C68,115 part is unused and in its original packaging.
Return procedure for BZX284-C68,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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