My Inquiry
My Account
Diodes Incorporated BZX84C30Q-13-F
- Part No.:
- BZX84C30Q-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C30Q-13-F.pdf
- Description:
- DIODE ZENER 30V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:7,853
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84C30Q-13-F from Diodes Incorporated is a 30 V, 2 mA nominal Zener voltage regulator diode in SOT23 package, rated for 350 mW power dissipation at ambient temperature, with 80 Ω maximum Zener impedance at 2 mA test current and ±0.1 µA maximum reverse leakage at 24.4 V, used for precision voltage reference and overvoltage clamping in automotive power management circuits.
For engineers reviewing the BZX84C30Q-13-F datasheet, BZX84C30Q-13-F pinout, BZX84C30Q-13-F application, or BZX84C30Q-13-F equivalent, key selection criteria include Zener voltage tolerance (28.0–32.0 V), thermal resistance (357 °C/W), AEC-Q101 qualification, green molding compound compliance, and SOT23 terminal configuration for high-reliability PCB-level regulation.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 30 V regulation point at 2 mA test current, exhibiting a negative temperature coefficient of −2.0 mV/°C and total capacitance of ~10 pF at 1 V reverse bias. Its planar die construction ensures stable voltage regulation under transient load conditions.
The device is qualified to AEC-Q101 standards, confirming suitability for automotive applications requiring −65 °C to +150 °C operating temperature range, moisture sensitivity level 1, and lead-free matte tin plating compatible with standard reflow profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30 V nominal, 28.0–32.0 V min/max at 2 mA - defines precise clamping threshold for 24 V rail protection |
| Power Dissipation (PD) | 350 mW at ambient temperature - supports continuous regulation without forced cooling in compact layouts |
| Zener Impedance (ZZT) | 80 Ω max at 2 mA - ensures low dynamic resistance for stable reference under varying load currents |
| Reverse Leakage (IR) | 0.1 µA max at 24.4 V - guarantees minimal standby current in always-on automotive subsystems |
| Thermal Resistance (RθJA) | 357 °C/W - enables thermal design margin when mounted on FR-4 with standard pad layout |
| Temperature Coefficient | −2.0 mV/°C - allows predictable drift compensation in temperature-critical sensor supply rails |
Pinout & Package
Package: SOT23 - surface-mount plastic case with matte tin-plated Alloy 42 leadframe, UL 94V-0 flammability rating, 0.008 g weight, and polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during Zener operation; forms return path for regulation current |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage node; sustains reverse bias to maintain 30 V reference |
| NC / Heat Sink (Pin 3) | Non-connected / thermal relief | No internal connection; serves as mechanical anchor and minor thermal path via copper pad |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) per Diodes Inc. definition |
| SOT23 footprint compatibility | Standardized 2.4 mm × 1.3 mm outline with 0.95 mm pitch - supports automated pick-and-place |
| Low leakage at rated VR | 0.1 µA max at 81% of VZ - minimizes quiescent power loss in battery-backed modules |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 30 V reference for microcontroller ADC input in BCM power distribution unit. IC Role / Device Role / Timing Role: Voltage reference diode providing stable 30 V rail for analog front-end scaling. Use Value: Maintains ±1.0 V regulation accuracy across −40 °C to +125 °C, enabling consistent sensor measurement resolution. |
Use Scenario: Clamping transient overvoltage on 24 V industrial I/O line exposed to inductive switching noise. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting peak excursion to 32 V. Use Value: Absorbs 350 mW surge energy without degradation, protecting downstream RS-485 transceivers. |
| Automotive Infotainment Power Sequencing | Medical Diagnostic Equipment Reference |
Use Scenario: Providing clean 30 V bias for audio amplifier stage startup sequencing in head unit. IC Role / Device Role / Timing Role: Precision Zener establishing enable threshold for DC-DC converter soft-start circuit. Use Value: Ensures repeatable turn-on timing with <0.5% VZ variation across production lots. |
Use Scenario: Generating stable 30 V reference for photodiode transimpedance amplifier in portable X-ray detector. IC Role / Device Role / Timing Role: Low-noise voltage reference source minimizing baseline drift in analog signal chain. Use Value: Delivers <10 pF junction capacitance and −2.0 mV/°C TC, reducing gain error in high-impedance feedback paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5256ET1G | 30 V nominal, 500 mW PD, 30 Ω ZZT at 20 mA, SOD-123 package | Higher power handling but larger footprint; not AEC-Q101 qualified | Select when higher surge energy absorption is required and automotive qualification is not mandatory |
| BZX84-C30-7-F | Identical electrical specs, same SOT23 package, but 3,000-piece tape-and-reel vs. 10,000-piece | No functional difference; differs only in packaging quantity and standard (non-automotive) compliance | Select for prototyping or low-volume production where smaller reel size reduces inventory overhead |
Compared with MMSZ5256ET1G, BZX84C30Q-13-F offers automotive qualification and tighter Zener tolerance at lower power, while BZX84-C30-7-F provides identical performance in smaller reels-making the Q-13-F variant optimal for high-volume AEC-compliant production.
Availability
BZX84C30Q-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, infotainment power sequencing, and medical diagnostic reference circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84C30Q-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 California, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The BZX84 series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for robust voltage regulation and transient suppression in harsh-environment vehicle electronics.
FAQ
What is the maximum reverse voltage (VR) before significant leakage occurs?
The BZX84C30Q-13-F exhibits ≤0.1 µA reverse current at 24.4 V, which is 81% of its nominal Zener voltage. At 27 V (90% of VZ), leakage remains below 1 µA per datasheet Figure 2, confirming reliable blocking behavior well below breakdown threshold.
Is this part suitable for use in a 12 V automotive system?
Yes - the 30 V Zener voltage provides ample margin above 12 V system peaks (typically ≤16 V during load dump). Its AEC-Q101 qualification, −65 °C to +150 °C operating range, and 350 mW dissipation make it appropriate for under-hood and cabin-mounted 12 V subsystems.
How does the "Q" suffix affect specifications?
The "Q" denotes AEC-Q101 qualification and green (halogen/antimony-free) molding compound. Electrical parameters, thermal ratings, and package dimensions are identical to non-Q variants - only reliability testing and material composition differ.
Can this diode replace a BZX84C33 in a 3.3 V logic interface?
No - the BZX84C30Q-13-F is a 30 V Zener and cannot regulate or clamp at 3.3 V. Using it in place of a 3.3 V Zener would result in no conduction until ~28 V, leaving the circuit unprotected. Always match nominal Zener voltage to the target regulation level.
BZX84C30Q-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):
- 30 V
- Tolerance:
- ±6.67%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 21 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
BZX84C30Q-13-F FAQ
1.How can I place an order for BZX84C30Q-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C30Q-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 BZX84C30Q-13-F reliable?
The price and inventory of BZX84C30Q-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 BZX84C30Q-13-F is usually 5 days.
3.What payment methods are accepted for BZX84C30Q-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C30Q-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C30Q-13-F?
BZX84C30Q-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C30Q-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 BZX84C30Q-13-F?
For technical support, including BZX84C30Q-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C30Q-13-F requirements.
6.How does Aetrix verify that BZX84C30Q-13-F is sourced from the original manufacturer or authorized distributors?
All BZX84C30Q-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 BZX84C30Q-13-F meets industry standards.
7.What is the process for return or replacement of BZX84C30Q-13-F?
All BZX84C30Q-13-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C30Q-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 BZX84C30Q-13-F part is unused and in its original packaging.
Return procedure for BZX84C30Q-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C30Q-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…
