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Diodes Incorporated BZX84C30S-7
- Part No.:
- BZX84C30S-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BZX84C30S-7.pdf
- Description:
- DIODE ZENER ARRAY 30V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:6,989
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Product details
Overview
BZX84C30S-7 from Diodes Incorporated is a dual 200 mW surface-mount Zener diode with nominal zener voltage 30 V (28.0–32.0 V at 2 mA), 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 compact power management circuits.
For engineers reviewing the BZX84C30S-7 datasheet, BZX84C30S-7 pinout, BZX84C30S-7 application, or BZX84C30S-7 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (625 °C/W), SOT-363 package footprint, low leakage at rated VR, and compatibility with automated SMT assembly under J-STD-020D Level 1 moisture sensitivity.
Technical Context
This dual-element Zener diode integrates two independent 30 V zener junctions in a single SOT-363 package, sharing no internal connection-each anode/cathode pair operates as a discrete clamp. It uses planar die construction for stable breakdown characteristics and low temperature coefficient (24.4 to 29.4 mV/°C).
Rated for operation from –65 °C to +150 °C, it delivers regulated reference voltage under reverse bias with 2 mA test current, supporting low-power analog sensing, supply rail clamping, and signal-level voltage stabilization where space-constrained PCB layout is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30 V nominal, 28.0–32.0 V range at IZT = 2 mA - defines precise clamping threshold for 3.3 V/5 V/12 V system rails |
| Power Dissipation (PD) | 200 mW at TA = 25 °C - limits continuous dissipation without heatsinking on FR4 board |
| Zener Impedance (ZZT) | 80 Ω max at IZT = 2 mA - determines regulation stiffness under dynamic load transients |
| Reverse Leakage (IR) | 0.1 µA max at VR = 21.0 V - ensures minimal quiescent current in standby voltage-reference circuits |
| Thermal Resistance (RθJA) | 625 °C/W - dictates junction temperature rise per mW dissipated on standard pad layout |
| Temp Coefficient (αVZ) | +24.4 to +29.4 mV/°C - quantifies positive drift of VZ with ambient temperature increase |
Pinout & Package
Package: SOT-363 (SC-70-6), ultra-small surface-mount plastic case with UL 94V-0 flammability rating, 0.006 g mass, and lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NC (Pin 1) | No Connect | Unbonded terminal - must remain unconnected to avoid parasitic coupling or ESD path disruption |
| C1 (Pin 2) | Cathode of Diode 1 | Reverse-biased terminal for first 30 V zener element - connects to regulated node |
| A1 (Pin 3) | Anode of Diode 1 | Forward reference terminal for Diode 1 - ties to ground or lower-potential rail |
| A2 (Pin 4) | Anode of Diode 2 | Independent anode for second 30 V zener - enables dual-rail or redundancy use |
| C2 (Pin 5) | Cathode of Diode 2 | Second regulated output node - electrically isolated from C1/A1 pair |
| NC (Pin 6) | No Connect | Unbonded terminal - no internal connection; floating per mechanical design |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent Zener elements | Two fully isolated 30 V zener junctions in one SOT-363 - saves board area vs. two discrete SOD-323 devices |
| Planar die construction | Ensures repeatable breakdown voltage and low parametric drift across production lots |
| Lead-free & RoHS compliant | Meets global environmental regulations with matte tin finish and halogen-free molding compound (Date Code UO+) |
| J-STD-020D Level 1 moisture sensitivity | Allows unlimited floor life before reflow - eliminates baking requirement in SMT line |
Applications
| Power Supply Clamp | Reference Voltage Generator |
|---|---|
Use Scenario: Clamping transient overvoltage on 24 V industrial control input lines subject to inductive kickback. IC Role / Device Role / Timing Role: Standalone voltage clamp protecting downstream MCU GPIO or analog front-end. Use Value: Limits peak voltage to ≤32 V with <0.1 µA leakage at 21 V - prevents latch-up while drawing negligible standby current. | Use Scenario: Providing stable 30 V reference for ADC biasing in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Precision shunt reference replacing higher-cost bandgap ICs in low-current (<2 mA) applications. Use Value: Delivers ±3.3% VZ tolerance and +27 mV/°C tempco - sufficient for 10-bit accuracy over 0–70 °C. |
| ESD Protection Network | Dual-Rail Voltage Monitoring |
Use Scenario: Secondary ESD clamp on USB 2.0 data lines where primary TVS is oversized. IC Role / Device Role / Timing Role: Low-capacitance (≈15 pF) secondary clamp absorbing residual surges after main TVS conduction. Use Value: Adds <10 pF parasitic capacitance at 1 V bias - preserves signal integrity up to 480 Mbps without eye diagram degradation. | Use Scenario: Independent monitoring of dual 30 V auxiliary supplies in telecom power shelves. IC Role / Device Role / Timing Role: Two-channel zener reference enabling simultaneous fault detection on redundant rails. Use Value: Enables differential comparison via comparator inputs - detects rail imbalance >±2 V with single-component footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5262BS-7-F | Single 30 V Zener, SOT-363, 200 mW, 100 Ω ZZT, 0.1 µA IR at 21 V | Single-element only - requires two units for dual-rail use | Select when only one regulated node is needed and board area allows duplication |
| BZX84C30LT1G | Single 30 V Zener, SOT-23, 350 mW, 80 Ω ZZT, 0.1 µA IR at 21 V | Higher power rating but larger footprint and no dual-element integration | Prefer for higher-power clamping where thermal margin is critical and dual functionality is unnecessary |
Compared with MMBZ5262BS-7-F and BZX84C30LT1G, BZX84C30S-7 uniquely provides two isolated 30 V zeners in one SOT-363 - reducing component count by 50% in dual-rail designs while maintaining identical electrical specs per element and full RoHS compliance.
Availability
BZX84C30S-7 is available at Aetrix Electronics and suitable for industrial control systems, portable instrumentation, telecom power monitoring, and automotive body electronics requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84C30S-7 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, manufacturing, and sales operations across Asia, Europe, and North America.
The BZX84C series belongs to Diodes' precision Zener diode product line, engineered for high-reliability voltage regulation and clamping in space-constrained, cost-sensitive applications across consumer, industrial, and communications markets.
FAQ
What is the maximum reverse voltage (VR) at which BZX84C30S-7 guarantees ≤0.1 µA leakage?
The datasheet specifies 0.1 µA maximum reverse current (IR) at VR = 21.0 V. This is the highest reverse voltage at which that leakage threshold is guaranteed - exceeding 21.0 V increases leakage exponentially as the device approaches breakdown.
Can BZX84C30S-7 be used in place of a single 30 V Zener diode like BZX84C30LT1G?
Yes - either cathode/anode pair (C1/A1 or C2/A2) functions identically to a single 30 V Zener. However, the unused NC pins must remain unconnected, and thermal derating applies to total package dissipation (200 mW shared across both elements if used simultaneously).
Is the SOT-363 package of BZX84C30S-7 compatible with standard SMT reflow profiles?
Yes - its J-STD-020D Level 1 moisture sensitivity rating means it can be stored indefinitely at ambient conditions and processed using standard Pb-free reflow profiles (peak 260 °C) without prebaking or special handling.
Does BZX84C30S-7 have a specified zener voltage temperature coefficient at 25 °C?
Yes - the datasheet lists +24.4 to +29.4 mV/°C at IZT = 5 mA. For the 2 mA test condition used in this variant's spec table, the coefficient remains within that range, reflecting positive VZ drift with rising temperature.
BZX84C30S-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Configuration:
- 2 Independent
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±6%
- 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 ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
BZX84C30S-7 FAQ
1.How can I place an order for BZX84C30S-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C30S-7 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 BZX84C30S-7 reliable?
The price and inventory of BZX84C30S-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C30S-7 is usually 5 days.
3.What payment methods are accepted for BZX84C30S-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C30S-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C30S-7?
BZX84C30S-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C30S-7 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 BZX84C30S-7?
For technical support, including BZX84C30S-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C30S-7 requirements.
6.How does Aetrix verify that BZX84C30S-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C30S-7 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 BZX84C30S-7 meets industry standards.
7.What is the process for return or replacement of BZX84C30S-7?
All BZX84C30S-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C30S-7, 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 BZX84C30S-7 part is unused and in its original packaging.
Return procedure for BZX84C30S-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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