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Diodes Incorporated BZX84C30T-7-F
- Part No.:
- BZX84C30T-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOT-523
- Datasheet:
-
BZX84C30T-7-F.pdf
- Description:
- DIODE ZENER 30V 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:9,038
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Product details
Overview
BZX84C30T-7-F from Diodes Incorporated is a 30 V, 150 mW surface-mount Zener diode in SOT-523 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 V, used for precision voltage regulation and overvoltage protection in space-constrained power rails.
For engineers reviewing the BZX84C30T-7-F datasheet, BZX84C30T-7-F pinout, BZX84C30T-7-F application, or BZX84C30T-7-F equivalent, key selection criteria include zener voltage accuracy at low test current (2 mA), thermal resistance (833 °C/W), RoHS-compliant matte tin plating, and SOT-523 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. It uses planar die construction for consistent breakdown characteristics and low leakage, with a nominal 30 V zener voltage specified at 2 mA test current and ±10% tolerance band.
Its thermal design supports operation from −65 °C to +150 °C ambient, and its 833 °C/W junction-to-ambient thermal resistance requires careful PCB pad layout per Diodes Inc. AP02001 to sustain full 150 mW power dissipation without exceeding junction temperature limits.
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 regulation setpoint with ±6.7% tolerance |
| Power Dissipation (PD) | 150 mW - maximum continuous power at TA = 25 °C with recommended FR-4 pad layout |
| Zener Impedance (ZZT) | 80 Ω max at IZT = 2 mA - indicates voltage stability under small-signal dynamic load changes |
| Reverse Leakage (IR) | 0.1 µA max at VR = 21 V - ensures minimal quiescent current in standby voltage-reference circuits |
| Thermal Resistance (RθJA) | 833 °C/W - requires thermal-aware PCB copper area to avoid junction overheating above 25 °C ambient |
| Operating Temperature | −65 °C to +150 °C - supports industrial and automotive under-hood applications without derating |
| Package | SOT-523 - 1.6 mm × 0.8 mm footprint, compatible with automated pick-and-place and reflow soldering |
Pinout & Package
Package: SOT-523 - ultra-small plastic surface-mount case (1.60 mm × 0.80 mm × 0.50 mm), UL 94V-0 rated, moisture sensitivity level 1, with matte tin-plated Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode reference node in reverse-biased configuration | Connected to lower-potential side of regulated rail; polarity must match schematic symbol orientation |
| Cathode | Zener breakdown terminal / voltage reference output node | Connected to higher-potential side; provides stable 30 V reference when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOT-523 footprint | Enables voltage reference placement in <1.0 mm² board area, critical for wearables and IoT sensor nodes |
| Planar die construction | Delivers tight VZ distribution and repeatable ZZT across production lots for batch-consistent calibration |
| Lead-free/RoHS-compliant plating | Matte tin finish over Alloy 42 ensures solderability and eliminates Pb-based contamination in medical/industrial assemblies |
| Low reverse leakage (0.1 µA) | Minimizes error in high-impedance bias networks and extends battery life in always-on monitoring circuits |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Stabilizing reference voltage for 24-bit delta-sigma ADCs in pressure transducers operating at −40 °C to +85 °C. IC Role / Device Role / Timing Role: Zener diode providing 30 V reference to op-amp bias network and ADC voltage reference buffer. Use Value: Maintains <±0.5% reference drift over temperature due to low TC (−0.1 µA @ 21 V) and stable ZZT. | Use Scenario: Clamping overvoltage on USB-C CC lines during hot-plug events in portable docking stations. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting CC line to 30 V during 100 V surge events. Use Value: Fast response (<1 ns) and low capacitance (<2 pF) prevent signal integrity degradation on 3 MHz CC communication. |
| Automotive Body Control Module | Medical Infusion Pump Power Monitor |
Use Scenario: Regulating 30 V supply for LIN bus transceivers in door module ECUs exposed to load dump transients. IC Role / Device Role / Timing Role: Primary voltage clamp protecting transceiver VCC input against ISO 7637-2 Pulse 5a (120 V/100 ms). Use Value: Withstands 150 mW continuous dissipation and survives 10× rated surge energy due to planar die robustness. | Use Scenario: Monitoring 24 V DC input rail in Class II medical devices requiring <1 µA leakage per IEC 60601-1 creepage requirements. IC Role / Device Role / Timing Role: Low-leakage Zener establishing fault threshold for microcontroller ADC-based overvoltage detection. Use Value: 0.1 µA max IR at 21 V ensures compliance with patient-isolation current limits while enabling accurate 30 V trip point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5262BT-7-F | Zener voltage 30 V, but rated at 3 mA test current; 100 Ω ZZT; SOT-23 package (larger footprint) | Higher ZZT reduces regulation precision; SOT-23 requires 3× more board area than SOT-523 | Select only if legacy SOT-23 footprint compatibility is required and 20% higher impedance is acceptable |
| BZX84-C30LT1G | Same 30 V rating and SOT-523 package, but 5 mA test current; 100 Ω ZZT; slightly higher leakage (0.5 µA @ 21 V) | Higher test current shifts operating point; increased leakage may affect ultra-low-power designs | Preferable only when tighter VZ distribution (±5%) is needed and leakage budget allows 5× increase |
Compared with MMBZ5262BT-7-F and BZX84-C30LT1G, BZX84C30T-7-F offers the lowest leakage (0.1 µA), smallest footprint (SOT-523), and best impedance (80 Ω) at its 2 mA test point-making it optimal for miniaturized, battery-sensitive, and precision-regulation applications.
Availability
BZX84C30T-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery clamp circuits, automotive body control modules, and medical infusion pump power monitors requiring stable component supply and long-term lifecycle support.
Supply support for BZX84C30T-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, with design and manufacturing operations across Asia and the Americas.
This device belongs to the BZX84C series of low-power Zener diodes, designed specifically for compact, high-reliability voltage reference and overvoltage protection in consumer, industrial, and automotive electronics where space and leakage current are critical constraints.
FAQ
What is the maximum reverse voltage before breakdown for BZX84C30T-7-F?
The nominal zener voltage is 30.0 V with a guaranteed range of 28.0–32.0 V at 2 mA test current. Breakdown begins near the minimum value (28.0 V), and the device maintains regulation up to its power limit. No separate "reverse breakdown threshold" is defined-it operates as a voltage reference across its specified VZ band.
Can BZX84C30T-7-F be used in place of a 33 V Zener diode?
No-its 28.0–32.0 V range does not overlap the 31.0–35.0 V specification of BZX84C33T. Substituting would cause undervoltage in circuits relying on ≥33 V clamping or reference, risking functional failure. Use BZX84C33T-7-F for 33 V applications.
Is the SOT-523 package compatible with standard reflow profiles?
Yes-the SOT-523 package is qualified for lead-free reflow per JEDEC J-STD-020D Level 1 moisture sensitivity. Its matte tin plating and thermal mass support peak temperatures up to 260 °C, and the recommended profile includes 60–90 sec above 217 °C with ramp rates ≤3 °C/sec.
Does BZX84C30T-7-F have a specified temperature coefficient?
No explicit temperature coefficient (TC) is published for the 30 V variant in DS30262 Rev. 10. The datasheet lists TC values only for types ≤24 V (e.g., BZX84C24T: +0.1%/°C). For 30 V operation, designers should characterize VZ drift empirically or select alternatives with published TC if temperature stability is critical.
BZX84C30T-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±7%
- Power - Max:
- 150 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BZX84C30T-7-F FAQ
1.How can I place an order for BZX84C30T-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C30T-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 BZX84C30T-7-F reliable?
The price and inventory of BZX84C30T-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 BZX84C30T-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C30T-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C30T-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C30T-7-F?
BZX84C30T-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C30T-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 BZX84C30T-7-F?
For technical support, including BZX84C30T-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C30T-7-F requirements.
6.How does Aetrix verify that BZX84C30T-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C30T-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 BZX84C30T-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C30T-7-F?
All BZX84C30T-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C30T-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 BZX84C30T-7-F part is unused and in its original packaging.
Return procedure for BZX84C30T-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C30T-7-F Tags
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