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Nexperia USA Inc. BZX84J-B27,115
- Part No.:
- BZX84J-B27,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-B27,115.pdf
- Description:
- DIODE ZENER 27V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:1,185
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Product details
Overview
BZX84J-B27,115 from Nexperia is a 27 V ±2 % Zener voltage regulator diode in SOD323F (SC-90) package, rated for 550 mW total power dissipation and AEC-Q101 qualified for automotive use. It delivers stable reverse breakdown at 27 V with 73 pF capacitance, 250 Ω differential resistance at IZ = 2 mA, and operates across –55 °C to +150 °C ambient.
For engineers reviewing the BZX84J-B27,115 datasheet, BZX84J-B27,115 pinout, BZX84J-B27,115 application, or BZX84J-B27,115 equivalent, this device serves as a precision voltage reference and overvoltage clamp in compact automotive and industrial power rails where low-profile SMD placement and thermal robustness are critical.
Technical Context
This Zener diode operates in reverse-bias breakdown mode with a nominal Zener voltage of 27 V at 2 mA test current, exhibiting a positive temperature coefficient of +21.4 mV/K. Its low 73 pF junction capacitance minimizes high-frequency loading in feedback networks.
The device features non-repetitive peak reverse power dissipation of 40 W (100 µs square wave, Tj = 25 °C), and its 230 K/W junction-to-ambient thermal resistance reflects performance on standard FR4 PCB with 1 cm² cathode pad - enabling reliable operation under transient surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V nominal, ±2 % tolerance at IZ = 2 mA - ensures tight regulation in reference circuits |
| Differential Resistance (rdiff) | 250 Ω max at IZ = 2 mA - defines output impedance and load regulation sensitivity |
| Junction Capacitance (Cd) | 73 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in filtering applications |
| Total Power Dissipation (Ptot) | 550 mW at Tamb ≤ 25 °C - sets continuous DC power handling on standard FR4 layout |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 µs - supports ESD/surge clamping without degradation |
| Reverse Current (IR) | 0.05 µA max at VR = 22.7 V - guarantees low leakage below knee voltage |
| Operating Temperature | –55 °C to +150 °C - validated for under-hood automotive environments |
Pinout & Package
SOD323F (SC-90) surface-mount plastic package: 2-pin, ultra-small outline (2.3 × 1.35 × 0.95 mm), flat lead, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - reverse-bias anode connection point |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 |
| ±2 % Zener voltage tolerance | Enables tighter system-level voltage margining vs. ±5 % variants, reducing need for post-regulation trimming |
| Low 250 Ω dynamic impedance | Minimizes output voltage shift under varying load current - critical for stable feedback references |
| 73 pF junction capacitance | Preserves signal integrity in high-speed comparator inputs and fast transient detection circuits |
| 40 W non-repetitive surge rating | Clamps ISO 7637-2 pulse 1/2/5a transients without failure in 12 V vehicle systems |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 27 V supply rail for LIN transceivers and LED drivers in door modules. IC Role / Device Role / Timing Role: Zener shunt regulator providing stable bias for analog front-end ICs and gate drivers. Use Value: Maintains <±100 mV output deviation across –40 °C to +125 °C, meeting ASIL-B functional safety monitoring requirements. |
Use Scenario: Clamping amplifier input to prevent overvoltage damage from 4–20 mA loop transients. IC Role / Device Role / Timing Role: Fast-response voltage limiter protecting op-amp inputs during field wiring faults. Use Value: Limits fault voltage to ≤28.5 V within 100 ns, preserving amplifier integrity during 1 kV EFT bursts. |
| Power Supply Overvoltage Protection | Reference Voltage Source for ADC |
Use Scenario: Secondary overvoltage protection stage downstream of DC-DC converter in telecom power shelf. IC Role / Device Role / Timing Role: Standby shunt clamp activated only during regulator failure or feedback loss. Use Value: Absorbs up to 40 W surge energy without parametric shift, enabling fail-safe shutdown sequencing. |
Use Scenario: Providing 27 V reference for 16-bit SAR ADC used in battery cell voltage monitoring. IC Role / Device Role / Timing Role: Precision voltage source feeding ADC reference input via low-noise buffer. Use Value: Delivers <0.02 % long-term drift over 10-year life, supporting <±0.5 LSB measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27,115 | ±5 % tolerance, higher rdiff (300 Ω), same package and Ptot | Acceptable where system tolerances allow >±1.35 V variation at 27 V | Select for cost-sensitive industrial controls where calibration compensates for wider VZ spread |
| MMSZ5256B-7-F | 27 V ±5 %, SOD-123 package (larger footprint), 500 mW Ptot, no AEC-Q101 | Limited to commercial-temperature applications; requires larger PCB area | Choose when legacy board redesign prohibits SOD323F rework but needs identical VZ grading |
Compared with BZX84J-B27,115, the BZX84-C27,115 trades voltage precision for lower unit cost, while MMSZ5256B-7-F sacrifices automotive qualification and thermal efficiency for broader distributor availability - making the J-series optimal for new AEC-compliant designs demanding tight regulation in minimal space.
Availability
BZX84J-B27,115 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, power supply protection circuits, and precision reference subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84J-B27,115 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, with leadership in automotive-qualified components and advanced packaging.
The BZX84J series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh automotive and industrial environments.
FAQ
What is the maximum continuous forward current for BZX84J-B27,115?
The absolute maximum forward current is 250 mA per limiting values table. However, sustained forward conduction is not intended in normal Zener operation - it is specified only for surge testing and handling robustness. Continuous forward bias exceeds design intent and risks thermal runaway.
Can BZX84J-B27,115 be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients at higher currents and mismatched VZ tolerances cause current hogging. Parallel operation leads to thermal instability and premature failure. Use a single higher-rated device or active regulation instead.
Is the cathode marking consistent across all BZX84J-B27,115 reels?
Yes - per datasheet Figure 11 and Table 4, the cathode is always marked by a bar on the top surface adjacent to pin 1. This marking is laser-etched or molded into the SOD323F package and verified during AEC-Q101 qualification.
Does BZX84J-B27,115 require derating above 25 °C ambient?
Yes - linear derating applies above 25 °C: Ptot decreases by 4.4 mW/°C. At 100 °C ambient, maximum continuous power drops to 220 mW. Derating follows the 230 K/W Rth(j-a) value measured on FR4 with 1 cm² cathode pad.
BZX84J-B27,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 40 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
BZX84J-B27,115 FAQ
1.How can I place an order for BZX84J-B27,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-B27,115 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 BZX84J-B27,115 reliable?
The price and inventory of BZX84J-B27,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B27,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-B27,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B27,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-B27,115?
BZX84J-B27,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-B27,115 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 BZX84J-B27,115?
For technical support, including BZX84J-B27,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B27,115 requirements.
6.How does Aetrix verify that BZX84J-B27,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-B27,115 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 BZX84J-B27,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-B27,115?
All BZX84J-B27,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B27,115, 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 BZX84J-B27,115 part is unused and in its original packaging.
Return procedure for BZX84J-B27,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-B27,115 Tags
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