My Inquiry
My Account
Nexperia USA Inc. BZX84J-B20,115
- Part No.:
- BZX84J-B20,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-B20,115.pdf
- Description:
- DIODE ZENER 20V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:1,920
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84J-B20,115 from Nexperia is a 20 V ±2 % tolerance Zener voltage regulator diode in SOD323F (SC-90) surface-mount package, rated for 550 mW total power dissipation and 40 W non-repetitive peak reverse power at 100 µs pulse width, used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the BZX84J-B20,115 datasheet, BZX84J-B20,115 pinout, BZX84J-B20,115 application, or BZX84J-B20,115 equivalent, key selection criteria include Zener voltage tolerance (±2 %), differential resistance (≤14 Ω at IZ = 5 mA), AEC-Q101 qualification, thermal resistance (230 K/W junction-to-ambient), and SC-90 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 20 V regulation across load and line variations, with low differential resistance (14 Ω typical) ensuring minimal voltage deviation under dynamic current changes. Its temperature coefficient of +14.4 mV/K at IZ = 5 mA enables predictable drift compensation in temperature-sensitive circuits.
Designed per IEC 60134 absolute maximum ratings, it sustains 250 mA forward current and withstands 150 °C junction temperature, while its 0.05 µA reverse leakage at VR = 15 V supports low-power standby regulation in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.6 V to 20.4 V at IZ = 5 mA - tight ±2 % tolerance ensures accurate reference in feedback loops |
| Differential Resistance (rdiff) | ≤14 Ω at IZ = 5 mA - low impedance maintains regulation stability under varying load currents |
| Total Power Dissipation (Ptot) | 550 mW at Tamb ≤ 25 °C - defines continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 µs - supports transient surge suppression in automotive load-dump events |
| Reverse Leakage Current (IR) | 0.05 µA max at VR = 15 V - enables ultra-low quiescent current in always-on monitoring circuits |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - limits conduction loss when used in series-clamp configurations |
| Thermal Resistance (Rth(j-a)) | 230 K/W - determines junction temperature rise under steady-state power, critical for reliability derating |
Pinout & Package
SOD323F (SC-90) plastic surface-mount package: 2-pin, flat lead, 2.3 mm × 1.35 mm body, 0.65 mm pitch, 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 for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| ±2 % Zener voltage tolerance | Enables tighter closed-loop control without external trimming in voltage reference and sensing circuits |
| Low differential resistance (14 Ω) | Reduces output voltage variation under ±10 mA load current shifts, improving regulation accuracy |
| 230 K/W junction-to-ambient thermal resistance | Allows 550 mW operation on standard single-sided FR4 without heatsinking in ambient ≤25 °C |
| 0.05 µA reverse leakage at 15 V | Minimizes standby current draw in always-on automotive modules such as CAN transceiver bias networks |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Reference Supply |
|---|---|
Use Scenario: Monitoring 24 V battery rail in engine control unit to detect undervoltage/overvoltage faults. IC Role / Device Role / Timing Role: Zener diode provides stable 20 V reference for comparator input against which battery voltage is scaled and compared. Use Value: ±2 % tolerance ensures fault detection thresholds remain within ±0.4 V across production units, meeting ISO 16750-2 requirements. |
Use Scenario: Generating precise 20 V bias for analog front-end of 4–20 mA industrial current loop transmitter. IC Role / Device Role / Timing Role: Functions as shunt regulator to stabilize op-amp supply rail independent of loop current variations. Use Value: 14 Ω differential resistance limits output voltage shift to <0.14 V over 10 mA load change, preserving ADC full-scale accuracy. |
| USB-C PD Adapter Overvoltage Clamp | Medical Battery Management Reference |
Use Scenario: Clamping transient surges on 20 V output rail of USB-C Power Delivery adapter during hot-plug events. IC Role / Device Role / Timing Role: Absorbs 40 W non-repetitive pulses (100 µs) to protect downstream DC-DC controllers from voltage spikes. Use Value: 40 W PZSM rating matches IEC 61000-4-5 Level 4 surge test requirements for AC/DC adapters. |
Use Scenario: Providing stable 20 V reference for coulomb counting circuitry in portable medical infusion pump battery pack. IC Role / Device Role / Timing Role: Supplies low-drift reference to precision current-sense amplifier during long-term battery discharge cycles. Use Value: +14.4 mV/K temperature coefficient allows predictable calibration offset correction across –20 °C to +70 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C20,115 | ±5 % tolerance (19.0–21.0 V), higher rdiff (≤22 Ω), same package and Ptot | Acceptable where cost sensitivity outweighs regulation accuracy; unsuitable for closed-loop feedback | Select for non-critical biasing where ±5 % VZ meets system margin |
| MMSZ5248B-7-F | ±5 % tolerance, 500 mW Ptot, SOD-123 package (larger footprint), 300 mW derated at 75 °C | Requires PCB redesign due to different land pattern; lower thermal performance in confined spaces | Choose only if legacy SOD-123 layout exists and AEC-Q101 is not required |
Compared with BZX84J-B20,115, the BZX84-C20,115 trades tighter voltage control for lower cost, while MMSZ5248B-7-F sacrifices automotive qualification and thermal efficiency for broader distributor availability-neither offers the combined AEC-Q101 compliance, ±2 % tolerance, and SC-90 thermal performance of the original.
Availability
BZX84J-B20,115 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, USB-C PD adapter protection, and medical battery management systems requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX84J-B20,115 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on automotive, industrial, and mobile applications.
The BZX84J series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation in harsh automotive environments and space-constrained industrial PCBs.
FAQ
What is the maximum continuous reverse current (IZ) for stable 20 V regulation?
The BZX84J-B20,115 is characterized at IZ = 5 mA for nominal VZ specification, with recommended operating range from 1 mA to 20 mA. At 20 mA, voltage remains within 19.6–20.4 V with <0.2 V deviation due to rdiff = 14 Ω, supporting stable regulation in active bias networks without thermal runaway.
How does the +14.4 mV/K temperature coefficient affect long-term accuracy in automotive under-hood applications?
The positive temperature coefficient causes VZ to increase by 14.4 mV per °C rise above 25 °C. Over a –40 °C to +125 °C range, this results in ±1.08 V drift, which must be compensated in precision references via external circuitry or calibration-but remains predictable and monotonic for fault-monitoring thresholds.
Can BZX84J-B20,115 replace BZX84-C20 in an existing design without layout changes?
Yes-both share identical SOD323F (SC-90) package, pinout, and solder footprint. However, the ±2 % tolerance of BZX84J-B20,115 improves regulation accuracy by 1.5× versus ±5 % of BZX84-C20, enabling tighter system-level voltage margins without PCB revision.
Is the 40 W non-repetitive peak power rating validated for automotive load-dump waveforms per ISO 7637-2?
Yes-the 40 W rating is specified at tp = 100 µs, square-wave pulse, Tj = 25 °C prior to surge, matching the time constant of ISO 7637-2 Pulse 5a (load dump). Actual clamping capability depends on series impedance, but the device survives defined surge energy without parametric shift or failure.
BZX84J-B20,115 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):
- 20 V
- Tolerance:
- ±2%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 14 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-B20,115 FAQ
1.How can I place an order for BZX84J-B20,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-B20,115 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-B20,115 reliable?
The price and inventory of BZX84J-B20,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B20,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-B20,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B20,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-B20,115?
BZX84J-B20,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-B20,115 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-B20,115?
For technical support, including BZX84J-B20,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B20,115 requirements.
6.How does Aetrix verify that BZX84J-B20,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-B20,115 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-B20,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-B20,115?
All BZX84J-B20,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B20,115, 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-B20,115 part is unused and in its original packaging.
Return procedure for BZX84J-B20,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-B20,115 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
