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Diodes Incorporated BZX84C30W-7-F
- Part No.:
- BZX84C30W-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84C30W-7-F.pdf
- Description:
- DIODE ZENER 30V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,760
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Product details
Overview
BZX84C30W-7-F from Diodes Incorporated is a 30 V, 200 mW surface-mount Zener diode in SOT-323 package, rated for 2 mA test current with 28.0–32.0 V zener voltage tolerance, 80 Ω maximum zener impedance at 2 mA, and 0.1 µA maximum reverse leakage at 21.0 V, used for precision voltage regulation and overvoltage protection in low-power analog sensor interfaces.
For engineers reviewing the BZX84C30W-7-F datasheet, BZX84C30W-7-F pinout, BZX84C30W-7-F application, or BZX84C30W-7-F equivalent, key selection criteria include zener voltage tolerance (±6.7%), thermal resistance (625 K/W), junction temperature range (−65 to +125 °C), RoHS-compliant matte tin plating, and ultra-small SOT-323 footprint for space-constrained PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and supply conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOT-323 package enables high-density placement on FR4 boards with recommended pad layout per AP02001.
It exhibits a positive temperature coefficient of +24.4 to +29.4 mV/°C at 5 mA, enabling predictable drift compensation in temperature-sensitive references. The device is characterized at 25 °C with short-duration pulse testing to minimize self-heating effects during measurement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30.0 V nominal, 28.0–32.0 V range at IZT = 2 mA - defines stable regulation point for biasing or clamping |
| Power Dissipation (PD) | 200 mW at TA = 25 °C - limits continuous power handling on standard FR4 layout |
| Zener Impedance (ZZT) | 80 Ω max at IZT = 2 mA - determines output voltage stability under dynamic load changes |
| Reverse Leakage (IR) | 0.1 µA max at VR = 21.0 V - ensures minimal quiescent current in standby circuits |
| Thermal Resistance (RθJA) | 625 K/W - requires thermal-aware layout to avoid derating above 25 °C ambient |
| Operating Temperature | −65 to +125 °C - supports industrial and automotive under-hood environments |
Pinout & Package
Package: SOT-323 - ultra-small plastic surface-mount case (2.0 × 1.25 × 0.9 mm), UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin finish over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode reference ground | Connected to lower-potential node; reverse-biased operation places cathode at regulated voltage |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 30 V reference when reverse-biased above breakdown threshold |
| Case | Non-electrical mechanical interface | No internal connection; serves only as thermal and mechanical anchor on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and repeatable breakdown behavior across production lots |
| Green molding compound | Halogen-free, Sb2O3-free encapsulation compliant with environmental directives post-2006 |
| Ultra-small SOT-323 footprint | Enables placement in <1.5 mm² board area - ideal for wearables and IoT sensor nodes |
| Lead-free / RoHS-compliant plating | Matte tin annealed finish meets JEDEC J-STD-020D solderability and reflow requirements |
Applications
| Industrial Sensor Signal Conditioning | USB-C Port Overvoltage Clamp |
|---|---|
Use Scenario: Regulating reference voltage for 12-bit ADC front-end in temperature transmitters. IC Role / Device Role / Timing Role: Zener diode provides stable 30 V rail for op-amp biasing and ADC reference scaling. Use Value: ±6.7% VZ tolerance and 80 Ω ZZT ensure <0.5 LSB error contribution at full-scale input. | Use Scenario: Clamping transient surges on USB-C CC lines during hot-plug events. IC Role / Device Role / Timing Role: Fast-acting shunt protector limiting voltage to 32 V peak during ESD or inductive kick. Use Value: 0.1 µA leakage at 21 V prevents false detection; 200 mW rating absorbs 100 ns, 30 A pulses per IEC 61000-4-2 Level 4. |
| Low-Power Battery Monitor Reference | Automotive Cabin Controller Voltage Supervisor |
Use Scenario: Generating precise threshold for lithium-ion battery undervoltage lockout at 3.0 V system level. IC Role / Device Role / Timing Role: Zener-based divider sets comparator trip point with temperature-compensated drift. Use Value: +24.4 to +29.4 mV/°C TC allows predictable upward drift, simplifying compensation in firmware. | Use Scenario: Monitoring 24 V supply rail in HVAC control module for brownout detection. IC Role / Device Role / Timing Role: Shunt regulator establishes clean 30 V reference for supervisor IC input. Use Value: −65 to +125 °C operating range ensures reliability across vehicle cabin thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5260BLT1G | 30 V nominal, 225 mW PD, 100 Ω ZZT @ 3.3 mA, SOT-23 package | Larger footprint (2.9 × 1.3 mm), higher thermal resistance (714 K/W) | Preferred where higher power margin is needed but board space permits SOT-23 |
| BZX384-C30,115 | 30 V nominal, 300 mW PD, 80 Ω ZZT @ 5 mA, SOD-323 package (same outline as SOT-323) | Higher power rating and identical footprint; slightly tighter VZ tolerance (±5%) | Drop-in replacement when 300 mW derating headroom is required without layout change |
Compared with BZX84C30W-7-F, MMBZ5260BLT1G offers higher power but larger size and looser impedance, while BZX384-C30,115 matches footprint and improves power margin and tolerance - making it optimal for thermal-limited designs needing extended reliability.
Availability
BZX84C30W-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C port overvoltage clamp, and low-power battery monitor reference requiring stable component supply across long-life product cycles.
Supply support for BZX84C30W-7-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 industrial, computing, consumer, and communications markets with high-reliability components.
The BZX84 series belongs to Diodes' general-purpose Zener diode product line, designed specifically for cost-sensitive, space-constrained voltage regulation and protection in consumer and industrial electronics.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX84C30W-7-F has a nominal zener voltage of 30.0 V with a guaranteed range of 28.0–32.0 V at 2 mA test current. It begins controlled reverse breakdown within this band and is not rated for sustained operation above 32.0 V without exceeding its 200 mW power limit or risking thermal runaway.
Does this part meet automotive AEC-Q200 requirements?
No - BZX84C30W-7-F is not AEC-Q200 qualified. It is specified for industrial and commercial applications with operating temperature from −65 to +125 °C, but lacks the stress testing, failure analysis, and qualification documentation required for automotive use.
Can this Zener be used in series to achieve higher reference voltages?
Yes - multiple BZX84C30W-7-F units may be connected in series to generate higher reference voltages (e.g., two in series ≈ 60 V), but total power dissipation must remain within 200 mW per device, and voltage matching between units should be verified to avoid uneven current sharing.
Is the SOT-323 package compatible with standard reflow profiles?
Yes - the SOT-323 package uses lead-free matte tin plating and is rated for JEDEC J-STD-020D Level 1 moisture sensitivity. It supports standard Pb-free reflow profiles with peak temperatures up to 260 °C and is compatible with automated pick-and-place equipment.
BZX84C30W-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±6.67%
- Power - Max:
- 200 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 ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84C30W-7-F FAQ
1.How can I place an order for BZX84C30W-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C30W-7-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 BZX84C30W-7-F reliable?
The price and inventory of BZX84C30W-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C30W-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C30W-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C30W-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C30W-7-F?
BZX84C30W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C30W-7-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 BZX84C30W-7-F?
For technical support, including BZX84C30W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C30W-7-F requirements.
6.How does Aetrix verify that BZX84C30W-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C30W-7-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 BZX84C30W-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C30W-7-F?
All BZX84C30W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C30W-7-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 BZX84C30W-7-F part is unused and in its original packaging.
Return procedure for BZX84C30W-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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