My Inquiry
My Account
Nexperia USA Inc. BZX84J-C33,115
- Part No.:
- BZX84J-C33,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-C33,115.pdf
- Description:
- DIODE ZENER 33V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:3,771
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84J-C33,115 from Nexperia is a 33 V ±5 % Zener voltage regulator diode in SOD323F (SC-90) package, rated for 550 mW total power dissipation and 150 °C junction temperature, with low differential resistance (60 Ω at IZ = 2 mA) and AEC-Q101 qualification for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX84J-C33,115 datasheet, BZX84J-C33,115 pinout, BZX84J-C33,115 application, or BZX84J-C33,115 equivalent, this device serves as a precision shunt regulator in low-power supply rails, ESD-clamped signal lines, and biasing networks where stable 33 V reference and robust surge handling (up to 0.9 A non-repetitive peak reverse current) are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 33 V reference across its terminals under regulated current conditions (IZ = 2 mA), with a temperature coefficient of +12.6 mV/K enabling predictable drift compensation in thermal-varying environments. Its low 60 Ω differential resistance ensures minimal voltage variation under load changes.
The device supports pulsed surge immunity up to 40 W (tp = 100 μs, square wave) and exhibits 0.05 μA reverse leakage at 25.1 V, meeting stringent requirements for automotive-grade voltage clamping and reference stability in engine control units and body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V nominal, ±5 % tolerance - defines precise clamping threshold for overvoltage protection and reference generation |
| Total Power Dissipation (Ptot) | 550 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdiff) | 60 Ω at IZ = 2 mA - determines output impedance and regulation sensitivity to current variation |
| Non-repetitive Peak Reverse Current (IZSM) | 0.9 A at tp = 100 μs - enables transient surge suppression without failure in automotive load-dump events |
| Reverse Leakage Current (IR) | 0.05 μA at VR = 25.1 V - ensures negligible standby current in high-impedance bias networks |
| Thermal Resistance (Rth(j-a)) | 230 K/W - quantifies junction-to-ambient heat transfer efficiency on single-sided FR4 board |
| Operating Junction Temperature | −55 °C to +150 °C - supports deployment in under-hood automotive environments and industrial controls |
Pinout & Package
SOD323F (SC-90) surface-mount plastic package: 2-terminal, ultra-small footprint (2.3 mm × 1.35 mm × 0.95 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation for reverse-bias operation |
| 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 applications including engine management and ADAS sensor interfaces |
| Low differential resistance | 60 Ω at 2 mA - improves regulation accuracy in feedback loops and reference dividers |
| Wide operating temperature range | −55 °C to +150 °C - eliminates derating concerns in extreme ambient conditions |
| Pulsed surge capability | 40 W non-repetitive peak power (tp = 100 μs) - withstands ISO 7637-2 load-dump transients |
| Small outline package | SOD323F footprint - enables high-density PCB layouts in space-constrained modules |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing 33 V reference for analog-to-digital converter (ADC) biasing in engine knock detection circuitry. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 33 V node for precision ADC input scaling. Use Value: Enables ±0.5 % measurement accuracy over −40 °C to +125 °C ambient due to low rdiff and AEC-Q101 thermal stability. |
Use Scenario: Clamping 33 V supply rail against ESD and switching transients in 4–20 mA loop-powered pressure transmitter. IC Role / Device Role / Timing Role: Overvoltage protector limiting rail excursion during field-wiring faults or lightning-induced surges. Use Value: Absorbs 40 W transient energy without degradation, preserving downstream op-amp and DAC integrity per IEC 61000-4-2 Level 4. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Providing stable 33 V reference for optocoupler-based feedback in isolated AC/DC flyback converters. IC Role / Device Role / Timing Role: Precision Zener element setting secondary-side regulation threshold in closed-loop control. Use Value: Maintains ±5 % output voltage tolerance across line/load variations due to tight VZ tolerance and low temperature drift. |
Use Scenario: Generating calibrated 33 V bias for photodiode transimpedance amplifier in portable ultrasound front-end. IC Role / Device Role / Timing Role: Low-noise voltage reference establishing fixed gain-setting point for analog signal chain. Use Value: Delivers <0.1 μA leakage and 60 Ω dynamic impedance, minimizing offset drift and gain error in critical diagnostic measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C33,115 | Same 33 V ±5 % rating but lacks AEC-Q101 qualification and has higher rdiff (75 Ω) | Not suitable for automotive under-hood use; acceptable for commercial-grade power supplies | Select when cost sensitivity outweighs automotive reliability requirements |
| MMSZ5261B-TP | 33 V ±5 %, SOD-123 package, Ptot = 500 mW, rdiff = 70 Ω, no AEC-Q101 | Larger footprint and lower surge rating (30 W) limit use in compact, high-surge automotive nodes | Choose only if SOD-123 board layout is already standardized and thermal margin permits |
Compared with BZX84-C33,115 and MMSZ5261B-TP, the BZX84J-C33,115 delivers superior automotive compliance, tighter thermal performance (150 °C Tj), and higher surge resilience-making it the sole option for safety-critical 33 V reference in ECU and ADAS subsystems.
Availability
BZX84J-C33,115 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and medical diagnostic equipment manufacturing requiring stable component supply and full traceability.
Supply support for BZX84J-C33,115 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 automotive power systems and industrial control modules.
FAQ
What is the maximum continuous forward current for BZX84J-C33,115?
The absolute maximum forward current is 250 mA per limiting values table. However, forward conduction is not its intended operating mode; the device is designed for reverse-bias Zener regulation. Sustained forward current above 100 mA risks thermal overstress due to VF ≈ 1.1 V at that level, exceeding safe power dissipation limits on standard PCBs.
Can BZX84J-C33,115 replace BZX84-C33 in an existing design?
Yes, electrically and physically-both share identical SOD323F package, 33 V ±5 % rating, and pinout. The BZX84J-C33,115 adds AEC-Q101 qualification and improved thermal resistance (230 K/W vs. 250 K/W typical), making it a drop-in upgrade for automotive applications without layout changes.
What is the reverse leakage current at 25 V for this part?
At VR = 25.1 V and Tj = 25 °C, the maximum reverse leakage current is 0.05 μA, as specified in Table 9. This ultra-low leakage ensures minimal loading on high-impedance reference nodes and preserves accuracy in precision analog circuits.
Does this Zener diode require external current limiting in series?
Yes-like all Zener diodes, BZX84J-C33,115 requires a series current-limiting resistor to set IZ within 1–10 mA for optimal regulation. Without it, excessive current causes thermal runaway; the resistor value is calculated using (VIN − 33 V)/IZ, where IZ is selected based on desired rdiff and power margin.
BZX84J-C33,115 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):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.1 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-C33,115 FAQ
1.How can I place an order for BZX84J-C33,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-C33,115 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-C33,115 reliable?
The price and inventory of BZX84J-C33,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-C33,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-C33,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-C33,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-C33,115?
BZX84J-C33,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-C33,115 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-C33,115?
For technical support, including BZX84J-C33,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-C33,115 requirements.
6.How does Aetrix verify that BZX84J-C33,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-C33,115 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-C33,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-C33,115?
All BZX84J-C33,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-C33,115, 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-C33,115 part is unused and in its original packaging.
Return procedure for BZX84J-C33,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-C33,115 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…
