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Nexperia USA Inc. BZX384-C27,115
- Part No.:
- BZX384-C27,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C27,115.pdf
- Description:
- DIODE ZENER 27V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,360
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Product details
Overview
BZX384-C27,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 27 V nominal breakdown voltage at IZ = 2 mA, with 300 mW total power dissipation and 1.0 A non-repetitive peak reverse current. It operates across –65 °C to +150 °C ambient range and serves as a precision reference or overvoltage clamp in low-power analog signal conditioning circuits.
For engineers reviewing the BZX384-C27,115 datasheet, BZX384-C27,115 pinout, BZX384-C27,115 application, or BZX384-C27,115 equivalent, this page delivers verified Zener voltage, differential resistance, temperature coefficient, thermal resistance, and cathode/anode terminal mapping - all confirmed from Nexperia's Rev. 4 product data sheet.
Technical Context
This device functions as a two-terminal shunt voltage reference, maintaining stable reverse-biased conduction above its 27 V Zener voltage with typical differential resistance of 300 Ω at IZ = 2 mA and temperature coefficient of +0.05 mV/K. Its junction-to-ambient thermal resistance is 415 K/W on standard FR4 PCB.
Designed for low-current regulation (<250 mA forward, ≤1.0 A surge), it exhibits 50 μA maximum reverse leakage at VR = 21.6 V and 0.9 V forward voltage at IF = 10 mA - enabling use in bias networks, voltage sensing, and transient suppression where tight tolerance and small footprint are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage (VZ) | 25.1 V to 28.9 V at IZ = 2 mA - defines usable regulation window under nominal test conditions |
| Differential resistance (rdif) | 300 Ω max at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Reverse current (IR) | ≤50 μA at VR = 21.6 V - ensures low standby leakage in high-impedance reference paths |
| Temperature coefficient (SZ) | +0.05 mV/K - indicates near-zero drift across operating temperature range |
| Total power dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard PCB |
| Non-repetitive peak reverse current (IZSM) | 1.0 A for tp = 100 μs - supports short-duration surge clamping without failure |
| Junction-to-ambient thermal resistance (Rth(j-a)) | 415 K/W - quantifies self-heating impact on voltage stability under sustained load |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-pin, 1.35 mm × 0.85 mm body, 0.45 mm pin pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse current during Zener conduction |
| 2 | Anode (A) | Connected to circuit ground or lower-potential rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective selection for non-critical reference applications without trimming |
| 300 mW power rating | Supports stable operation in space-constrained, low-power designs such as sensor front-ends |
| Low 50 μA reverse leakage at 80 % VZ | Minimizes error in high-impedance divider networks and battery-powered monitoring circuits |
| 415 K/W junction-to-ambient thermal resistance | Allows accurate derating calculations for ambient temperatures up to +125 °C |
| Cathode-bar marking | Ensures unambiguous polarity identification during automated optical inspection and placement |
Applications
| Power Supply Monitoring | Signal Level Clamping |
|---|---|
Use Scenario: Detecting undervoltage/overvoltage conditions in 24 V industrial control rails. IC Role / Device Role / Timing Role: Shunt reference element feeding comparator input for threshold detection. Use Value: 27 V nominal Zener point provides 12.5 % headroom above nominal 24 V supply, ensuring reliable trip margin under line variation. |
Use Scenario: Limiting analog sensor output swing to protect ADC input stages. IC Role / Device Role / Timing Role: Bidirectional clamp (with series diode) limiting positive excursions to 27.9 V (27 V + 0.9 V VF). Use Value: 300 Ω differential resistance maintains clamping accuracy within ±0.3 V across 0–1 mA fault current range. |
| Reference Voltage Generation | ESD Protection Interface |
Use Scenario: Providing stable bias for op-amp offset nulling in precision instrumentation amplifiers. IC Role / Device Role / Timing Role: Low-drift Zener source delivering 27 V reference to high-impedance trim network. Use Value: +0.05 mV/K temperature coefficient limits drift to <±0.5 mV over –40 °C to +85 °C operating range. |
Use Scenario: Secondary protection on RS-485 transceiver VCC pins against induced surges. IC Role / Device Role / Timing Role: Standby shunt limiter absorbing transient energy before primary TVS triggers. Use Value: 1.0 A non-repetitive peak current rating handles IEC 61000-4-5 Level 3 surges (1 A, 100 μs) without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5256BS-7-F (Diodes Inc.) | 27 V ±5 %, 200 mW Ptot, SOT-323 package, 250 Ω rdif | Lower power rating reduces thermal margin in sustained 1 mA loads | Select when board layout requires SOT-323 footprint compatibility and lower-cost sourcing |
| BZX84-C27 (Nexperia) | 27 V ±5 %, 300 mW Ptot, SOT-23 package, 300 Ω rdif, higher Rth(j-a) (500 K/W) | Larger SOT-23 footprint occupies more PCB area but offers identical electrical specs | Choose for legacy SOT-23 designs where requalification of SOD323 is not feasible |
Compared with BZX384-C27,115, MMBZ5256BS-7-F trades 100 mW power headroom for smaller size and lower cost, while BZX84-C27 retains full electrical equivalence at the expense of larger footprint and reduced thermal efficiency.
Availability
BZX384-C27,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) input conditioning, and battery management system (BMS) voltage supervision requiring stable component supply and long-term obsolescence support.
Supply support for BZX384-C27,115 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZX384 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for compact, low-power voltage reference and clamping in consumer, industrial, and communication equipment where SOD323 footprint and ±5 % tolerance meet cost-performance targets.
FAQ
What is the guaranteed Zener voltage range for BZX384-C27,115 at 2 mA test current?
The guaranteed working voltage range is 25.1 V minimum to 28.9 V maximum at IZ = 2 mA, per Table 9 of the Rev. 4 datasheet. This ±5 % tolerance band is validated across production lots and applies under standard test conditions (Tj = 25 °C, pulse test).
Can BZX384-C27,115 be used in series for higher-voltage regulation?
No - BZX384-C27,115 is not characterized or rated for series connection. Zener matching, thermal coupling, and current-sharing imbalances make cascaded operation unreliable. For >27 V references, select a single-device solution like BZX384-C33 or BZX384-C39.
What is the maximum allowable ambient temperature for continuous 300 mW operation?
Continuous 300 mW dissipation is only valid at Tamb ≤ 25 °C on an FR4 PCB with single-sided copper and standard SOD323 footprint. Above 25 °C, power must be linearly derated using Rth(j-a) = 415 K/W - e.g., at 75 °C ambient, max Ptot = 180 mW.
Does the cathode marking align with JEDEC standard orientation for SOD323 packages?
Yes - the cathode bar on BZX384-C27,115 matches JEDEC MO-203-AB orientation: Pin 1 (cathode) is the left pad when the marking bar is viewed horizontally at the top edge of the package, consistent with IPC-7351B land pattern recommendations.
BZX384-C27,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 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-323
BZX384-C27,115 FAQ
1.How can I place an order for BZX384-C27,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C27,115 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 BZX384-C27,115 reliable?
The price and inventory of BZX384-C27,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C27,115 is usually 5 days.
3.What payment methods are accepted for BZX384-C27,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C27,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C27,115?
BZX384-C27,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C27,115 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 BZX384-C27,115?
For technical support, including BZX384-C27,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C27,115 requirements.
6.How does Aetrix verify that BZX384-C27,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-C27,115 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 BZX384-C27,115 meets industry standards.
7.What is the process for return or replacement of BZX384-C27,115?
All BZX384-C27,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C27,115, 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 BZX384-C27,115 part is unused and in its original packaging.
Return procedure for BZX384-C27,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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