My Inquiry
My Account
Diodes Incorporated BZX84C33Q-13-F
- Part No.:
- BZX84C33Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C33Q-13-F.pdf
- Description:
- DIODE ZENER 33V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,373
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84C33Q-13-F from Diodes Incorporated is an automotive-grade 33 V, 2 mA Zener diode in SOT23 package, rated for 350 mW power dissipation at TA = +25°C with 325 Ω maximum Zener impedance at test current, used for precision voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZX84C33Q-13-F datasheet, BZX84C33Q-13-F pinout, BZX84C33Q-13-F application, or BZX84C33Q-13-F equivalent, key selection criteria include Zener voltage tolerance (±3.0 V), temperature coefficient (−3.5 mV/°C), reverse leakage (≤0.1 µA at 27.4 V), and AEC-Q101 qualification for automotive electronics.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 33 V at 2.0 mA test current, exhibiting a typical temperature coefficient of −3.5 mV/°C and maximum Zener impedance of 325 Ω at IZT. Its planar die construction ensures stable voltage reference performance under transient conditions.
The device is optimized for surface-mount automated assembly on FR-4 PCBs, with thermal resistance RθJA of 357 °C/W when terminals are held at ambient temperature, enabling reliable operation across −65°C to +150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V nominal, 31.0–35.0 V range at 2.0 mA - defines precise clamping threshold for voltage-sensitive circuits |
| Power Dissipation (PD) | 350 mW - maximum continuous power handling at ambient temperature, limiting usable current in regulation applications |
| Zener Impedance (ZZT) | 325 Ω max at 2.0 mA - determines voltage regulation stability under varying load currents |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 27.4 V - ensures minimal quiescent current in standby or high-impedance sensing nodes |
| Temperature Coefficient | −3.5 mV/°C - quantifies voltage drift with temperature, critical for accuracy in automotive environments |
| Package | SOT23 - compact 3-pin surface-mount outline enabling high-density PCB layout and reflow compatibility |
Pinout & Package
Package: SOT23 - molded plastic case, UL 94V-0 flammability rating, 0.008 g weight, matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to circuit ground or lower potential node during Zener operation |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage rail; reverse-biased to maintain 33 V reference |
| No Connection (Pin 3) | Internal die attach pad | Electrically isolated; serves mechanical anchoring only, not functional in circuit |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive reliability including temperature cycling, HTRB, and ESD testing per stress requirements |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), compliant with RoHS 3 (2015/863/EU) |
| Planar die construction | Enables tight Zener voltage distribution and improved long-term stability versus diffused-junction alternatives |
| Low leakage at rated VR | 0.1 µA max at 27.4 V enables use in battery-powered sensor biasing without significant drain |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for microcontroller ADC input scaling in door module ECUs. IC Role / Device Role / Timing Role: Zener diode provides stable 33 V reference to divide battery voltage for accurate 0–5 V ADC range mapping. Use Value: AEC-Q101 qualification ensures consistent regulation across −40°C to +125°C ambient, minimizing calibration drift. |
Use Scenario: Overvoltage clamp protecting 24 V industrial transducer output stage. IC Role / Device Role / Timing Role: Shunts transient surges above 33 V to ground, preventing damage to downstream op-amp inputs. Use Value: 325 Ω Zener impedance limits clamping voltage overshoot during fast 100 ns transients. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Secondary-side voltage sensing in isolated flyback converter feedback loop. IC Role / Device Role / Timing Role: Sets reference point for optocoupler-driven error amplifier, regulating output within ±3%. Use Value: Tight 31.0–35.0 V Zener tolerance directly translates to output voltage accuracy budget. |
Use Scenario: Precision bias network for photodiode amplifier in portable blood oximeter. IC Role / Device Role / Timing Role: Supplies stable 33 V supply rail to high-gain transimpedance amplifier stages. Use Value: −3.5 mV/°C tempco allows predictable offset correction in firmware calibration routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5257ET1G | 33 V nominal, 500 mW PD, 100 Ω ZZT @ 20 mA - higher power, lower impedance, non-automotive grade | Lacks AEC-Q101 qualification; suitable for commercial power supplies but not automotive ECUs | Select when higher surge energy handling and tighter regulation under load are required, and automotive qualification is unnecessary |
| BZX84-C33-7-F | Identical electrical specs, same SOT23 package, but standard (non-automotive) qualification and 3,000/reel tape-and-reel packaging | Not AEC-Q101 qualified; intended for consumer/industrial use where automotive reliability is not mandated | Choose for cost-sensitive non-automotive designs requiring identical Zener behavior and smaller order quantities |
Compared with MMSZ5257ET1G and BZX84-C33-7-F, BZX84C33Q-13-F uniquely combines AEC-Q101 compliance, 10,000/reel packaging, and guaranteed −3.5 mV/°C temperature coefficient - making it the only option qualified for safety-critical automotive voltage reference roles.
Availability
BZX84C33Q-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, consumer power adapter feedback loops, and medical diagnostic equipment requiring stable component supply with full traceability and lifecycle support.
Supply support for BZX84C33Q-13-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
This device belongs to the BZX84C series of automotive-qualified Zener diodes, designed specifically for voltage regulation and transient suppression in harsh-environment electronic control units where AEC-Q101 reliability and tight parametric consistency are mandatory.
FAQ
What is the Zener test current for BZX84C33Q-13-F?
The Zener voltage is specified at a test current (IZT) of 2.0 mA, as confirmed in the Electrical Characteristics table of DS18001 Rev. 33-2. This current establishes the operating point for measuring nominal 33 V breakdown and associated parameters like ZZT and temperature coefficient.
Is BZX84C33Q-13-F compatible with lead-free reflow soldering?
Yes - the device uses matte tin finish annealed over Alloy 42 leadframe and is fully RoHS 3 compliant. It meets MIL-STD-202 Method 208 for solderability and is qualified for standard Pb-free reflow profiles up to 260°C peak temperature.
How does the Q suffix differ from standard BZX84C33 parts?
The "Q" denotes AEC-Q101 qualification, meaning this variant undergoes additional stress testing (HTGB, HTRB, TCT, ESD) per automotive standards. Electrically identical to non-Q versions, it carries full automotive traceability and lot-level reliability data.
What is the maximum reverse voltage before breakdown?
The rated Zener voltage is 33 V nominal, with a guaranteed minimum of 31.0 V and maximum of 35.0 V at 2.0 mA. Below 27.4 V (VR), reverse leakage remains ≤0.1 µA - confirming no significant conduction occurs until near the specified breakdown range.
BZX84C33Q-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±6.06%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 23.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C33Q-13-F FAQ
1.How can I place an order for BZX84C33Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C33Q-13-F 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 BZX84C33Q-13-F reliable?
The price and inventory of BZX84C33Q-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C33Q-13-F is usually 5 days.
3.What payment methods are accepted for BZX84C33Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C33Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C33Q-13-F?
BZX84C33Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C33Q-13-F 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 BZX84C33Q-13-F?
For technical support, including BZX84C33Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C33Q-13-F requirements.
6.How does Aetrix verify that BZX84C33Q-13-F is sourced from the original manufacturer or authorized distributors?
All BZX84C33Q-13-F 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 BZX84C33Q-13-F meets industry standards.
7.What is the process for return or replacement of BZX84C33Q-13-F?
All BZX84C33Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C33Q-13-F, 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 BZX84C33Q-13-F part is unused and in its original packaging.
Return procedure for BZX84C33Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C33Q-13-F 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
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
