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Diodes Incorporated BZX84C12S-7
- Part No.:
- BZX84C12S-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BZX84C12S-7.pdf
- Description:
- DIODE ZENER ARRAY 12V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:9,736
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Product details
Overview
BZX84C12S-7 from Diodes Incorporated is a 12 V, 200 mW surface-mount Zener diode in SOT-363 package, with nominal zener voltage 12 V (min 11.4 V, max 12.7 V at 5 mA), zener impedance 25 Ω at 5 mA, and reverse current ≤0.1 µA at 8 V, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZX84C12S-7 datasheet, BZX84C12S-7 pinout, BZX84C12S-7 application, or BZX84C12S-7 equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at test current, power derating above 25°C, thermal resistance (625 °C/W), and SOT-363 footprint compatibility with high-density PCB layouts.
Technical Context
This dual-anode, single-cathode Zener diode operates in reverse breakdown to maintain stable voltage across load variations and supply fluctuations. It features planar die construction for consistent parametric performance and low leakage (≤0.1 µA at VR = 8 V).
Designed for DC voltage clamping and reference generation, it delivers 12 V regulation with ±5% tolerance (11.4–12.7 V), temperature coefficient +6.0 to +10.0 mV/°C, and supports operation from –65°C to +150°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V nominal, 11.4–12.7 V range at IZT = 5 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (PD) | 200 mW at TA = 25°C - maximum continuous power before thermal derating begins |
| Zener Impedance (ZZT) | 25 Ω at IZT = 5 mA - indicates voltage stability under small-signal current variation |
| Reverse Current (IR) | ≤0.1 µA at VR = 8 V - ensures minimal leakage in standby or high-impedance bias networks |
| Thermal Resistance (RθJA) | 625 °C/W - determines junction temperature rise per mW dissipated on FR4 board with recommended pad layout |
| Temperature Coefficient | +6.0 to +10.0 mV/°C at IZT = 5 mA - quantifies voltage drift with ambient temperature change |
| Package | SOT-363 - ultra-small 6-pin surface-mount outline (2.2 mm × 1.3 mm × 0.9 mm) with dual anode configuration |
Pinout & Package
SOT-363 package with six terminals: two anodes (A1, A2), two cathodes (C1, C2), and two no-connect (NC) pins. The device integrates two independent Zener diodes sharing a common cathode structure per datasheet schematic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NC | No Connect | Unbonded terminal; must remain unconnected on PCB to avoid parasitic coupling |
| C1 | Cathode (Diode 1) | Common cathode connection for first Zener element; ties to system ground or reference node |
| A1 | Anode (Diode 1) | Input node for first Zener; reverse-biased to regulate voltage between A1 and C1 |
| A2 | Anode (Diode 2) | Input node for second Zener; enables dual-voltage reference or redundancy in compact layout |
| C2 | Cathode (Diode 2) | Shared or isolated cathode path depending on board routing; matches C1 electrically per internal schematic |
| NC | No Connect | Unbonded terminal; no internal connection; floating per mechanical drawing |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener configuration | Two independent 12 V Zener elements in one SOT-363 package - reduces component count and board area in dual-rail or backup reference designs |
| Low leakage current | ≤0.1 µA at 8 V reverse bias - preserves battery life and signal integrity in low-current sensor biasing and precision ADC references |
| Planar die construction | Consistent breakdown characteristics and tight VZ distribution - improves batch-to-batch repeatability in production calibration |
| RoHS-compliant & "Green" | Lead-free matte tin plating and halogen-free molding compound - meets IPC-J-STD-609A and EU RoHS Directive 2011/65/EU requirements |
| High-temperature operation | Rated from –65°C to +150°C - supports automotive under-hood, industrial control, and outdoor equipment applications |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode providing 12 V reference to op-amp bias network and ADC reference divider. Use Value: Maintains <±1% output stability over –40°C to +85°C due to predictable +6.0 to +10.0 mV/°C TC and low 25 Ω ZZT. | Use Scenario: Generating precise 12 V auxiliary rail for USB PD controller logic and level-shifting circuitry. IC Role / Device Role / Timing Role: Voltage clamp regulating VCONN monitor path and CC line termination reference. Use Value: Delivers stable 12 V with ≤0.1 µA leakage, minimizing quiescent current draw during UFP/Sink standby states. |
| Automotive Body Control Module (BCM) | IoT Edge Node Voltage Monitoring |
Use Scenario: Overvoltage protection and reference for LIN bus transceiver supply monitoring circuit. IC Role / Device Role / Timing Role: Dual-Zener structure enables redundant 12 V sensing across two independent LIN channels. Use Value: SOT-363 footprint allows dual-channel monitoring in <3 mm² PCB area while meeting AEC-Q200 stress test requirements. | Use Scenario: Battery voltage supervision in coin-cell-powered environmental sensors with ultra-low sleep current. IC Role / Device Role / Timing Role: Zener-based comparator threshold generator for low-battery alert at 12 V system rail. Use Value: Enables reliable wake-up trigger at 11.4–12.7 V window with sub-100 nA total leakage contribution to sleep-mode budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242BS-7-F | 12 V, 225 mW, SOT-363, ZZT = 30 Ω @ 20 mA - higher test current, higher impedance, wider VZ tolerance (±5%) | Optimized for higher-current regulation; less stable at low IZ (<5 mA) | Select when operating near 20 mA and board layout permits same SOT-363 footprint |
| BZX84C12LT1G | 12 V, 300 mW, SOT-23, single Zener - higher power rating but larger footprint and no dual-diode integration | Single-element design requires two devices for dual-rail use; lacks space-saving dual configuration | Choose when higher power margin (>200 mW) is required and dual functionality is not needed |
Compared with MMBZ5242BS-7-F and BZX84C12LT1G, BZX84C12S-7 offers tighter low-current regulation (25 Ω @ 5 mA), dual-diode integration in SOT-363, and lower leakage-making it optimal for space-constrained, low-power reference and clamping where dual functionality matters.
Availability
BZX84C12S-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery reference design, and automotive body control modules requiring stable component supply and long-term obsolescence management.
Supply support for BZX84C12S-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 BZX84 series belongs to Diodes' precision Zener diode product line, engineered for stable voltage reference and clamping in space-constrained, low-power applications including portable electronics, automotive subsystems, and industrial instrumentation.
FAQ
What is the maximum reverse voltage (VR) this diode can withstand without breakdown?
The BZX84C12S-7 is rated for reverse breakdown at 12 V nominal, with specified reverse current ≤0.1 µA at VR = 8 V. Its absolute maximum non-breakdown reverse voltage is not defined; operation above 11.4 V initiates controlled Zener conduction. For safe non-conducting operation, keep reverse bias below 11.4 V in design margins.
Does this part support AEC-Q200 qualification for automotive use?
No - BZX84C12S-7 is not AEC-Q200 qualified. While it operates from –65°C to +150°C and uses RoHS-compliant materials, Diodes Incorporated does not list it in their AEC-Q200 stress-tested portfolio. For automotive-grade Zeners, consider the AZ series (e.g., AZBZX84C12S-7).
How does the dual-diode configuration affect PCB layout and thermal performance?
The dual configuration shares thermal mass within the SOT-363 package, so simultaneous conduction in both diodes increases junction temperature faster than single-diode operation. Layout must follow Diodes' recommended pad dimensions (DS30108 Page 4) and avoid copper flooding under the package to maintain RθJA = 625 °C/W. Pin assignment allows independent routing of A1/C1 and A2/C2 paths.
Can this Zener be used in AC signal clipping applications?
Yes - its 200 mW rating and fast response support low-frequency AC clipping (≤1 MHz). However, capacitance is not characterized in the datasheet for BZX84C12S-7 specifically; typical values for 12 V Zeners in this family are ~10–15 pF at 1 V reverse bias (per Fig. 4), limiting use to audio and sub-MHz signal paths where capacitive loading is acceptable.
BZX84C12S-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):
- 12 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
BZX84C12S-7 FAQ
1.How can I place an order for BZX84C12S-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C12S-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 BZX84C12S-7 reliable?
The price and inventory of BZX84C12S-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C12S-7 is usually 5 days.
3.What payment methods are accepted for BZX84C12S-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C12S-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C12S-7?
BZX84C12S-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C12S-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 BZX84C12S-7?
For technical support, including BZX84C12S-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C12S-7 requirements.
6.How does Aetrix verify that BZX84C12S-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C12S-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 BZX84C12S-7 meets industry standards.
7.What is the process for return or replacement of BZX84C12S-7?
All BZX84C12S-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C12S-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 BZX84C12S-7 part is unused and in its original packaging.
Return procedure for BZX84C12S-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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