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Diodes Incorporated BZX84C12S-7-F
- Part No.:
- BZX84C12S-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BZX84C12S-7-F.pdf
- Description:
- DIODE ZENER ARRAY 12V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:6,452
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Product details
Overview
BZX84C12S-7-F from Diodes Incorporated is a 12 V, 200 mW surface-mount Zener diode in SOT-363 package, rated for 5 mA test current with 11.4–12.7 V nominal zener voltage range, 25 Ω maximum zener impedance at IZT, and 0.1 µA maximum reverse leakage at 8.0 V, used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the BZX84C12S-7-F datasheet, BZX84C12S-7-F pinout, BZX84C12S-7-F application, or BZX84C12S-7-F equivalent, key selection criteria include zener voltage tolerance (±5%), thermal resistance (625 °C/W), ultra-small SOT-363 footprint, RoHS-compliant lead-free plating, and temperature coefficient (+6.0 to +10.0 mV/°C) for stable biasing in portable and space-constrained designs.
Technical Context
This dual-anode, single-cathode Zener diode operates in reverse breakdown mode with sharp knee characteristics at IZK = 1.0 mA and maintains regulation across -65 °C to +150 °C ambient range. Its planar die construction ensures repeatable breakdown voltage and low dynamic impedance.
The device uses alloy 42 leadframe with matte tin finish and meets J-STD-020D Level 1 moisture sensitivity. Power derating begins linearly above 25 °C ambient, reaching zero dissipation at 150 °C per the published derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V nominal, 11.4–12.7 V min/max at IZT = 5 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (PD) | 200 mW at TA = 25 °C - sets absolute max continuous DC power handling on FR4 board with recommended pad layout |
| Zener Impedance (ZZT) | 25 Ω max at IZT = 5 mA, f = 1 kHz - determines AC regulation stiffness and ripple rejection capability |
| Reverse Leakage (IR) | 0.1 µA max at VR = 8.0 V - ensures minimal quiescent current draw in high-impedance reference nodes |
| Temp. Coefficient (αVZ) | +6.0 to +10.0 mV/°C at IZT = 5 mA - quantifies voltage drift over temperature, critical for precision references |
| Thermal Resistance (RθJA) | 625 °C/W - links junction-to-ambient temperature rise to power dissipation; requires thermal-aware PCB layout |
Pinout & Package
Package: SOT-363 - ultra-small, 6-pin surface-mount plastic package with dual Zener configuration (two anodes, shared cathode), UL 94V-0 rated, 0.006 g weight, and moisture sensitivity Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (NC) | No Connect | Internally unconnected; must remain floating or grounded per layout guidelines |
| Pin 2 (C1) | Cathode 1 | Common cathode terminal for first Zener element; connects to regulated rail return |
| Pin 3 (A1) | Anode 1 | Anode of first Zener; reverse-biased to establish 12 V reference |
| Pin 4 (A2) | Anode 2 | Anode of second Zener (identical 12 V rating); enables dual-channel or redundancy use |
| Pin 5 (C2) | Cathode 2 | Shared cathode with Pin 2 - internal bond wire connection confirmed in Diodes Inc. schematic |
| Pin 6 (NC) | No Connect | Internally unconnected; no routing or soldering required |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Zener integration | Two independent 12 V Zener elements in one SOT-363 package - reduces board area vs. discrete dual-diode solutions |
| Low leakage performance | 0.1 µA max reverse current at 8.0 V - preserves battery life in always-on sensor bias networks |
| Stable tempco | +6.0 to +10.0 mV/°C - enables predictable voltage shift compensation in industrial temperature ranges |
| RoHS & Green compliant | Lead-free matte tin plating and halogen-free molding compound - meets IPC-J-STD-609A Class 1 requirements |
Applications
| Portable Battery Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in handheld medical devices with 3.3 V MCU ADC reference. IC Role / Device Role / Timing Role: Provides stable 12 V Zener reference for resistive divider scaling, enabling accurate 0–4.2 V cell measurement. Use Value: Tight 11.4–12.7 V tolerance and <0.1 µA leakage ensure minimal loading on high-impedance divider and long standby runtime. | Use Scenario: Biasing op-amp input stages in 4–20 mA loop transmitters operating at 85 °C ambient. IC Role / Device Role / Timing Role: Supplies temperature-stable reference voltage to precision current source circuitry. Use Value: +6.0 to +10.0 mV/°C tempco allows predictable calibration offset correction across full industrial temperature range. |
| USB-C Power Delivery Clamp | Automotive Body Control Module |
Use Scenario: Overvoltage clamping on USB-C VBUS line during hot-plug transients. IC Role / Device Role / Timing Role: Acts as fast-acting shunt regulator to limit VBUS to ≤12.7 V during surge events. Use Value: 200 mW rating and 25 Ω ZZT enable effective energy absorption without thermal runaway in short-duration spikes. | Use Scenario: Voltage reference for microcontroller reset supervisor in 12 V automotive subsystems. IC Role / Device Role / Timing Role: Delivers clean, noise-immune 12 V reference to POR (power-on reset) comparator input. Use Value: Dual-Zener structure provides redundancy; SOT-363 footprint supports automated placement in dense BCM PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242BS-7-F | Same 12 V nominal, but single-Zener SOT-363; 100 mW rating; 30 Ω ZZT | Limited to single-channel use; lower power margin for transient clamping | Select when only one Zener is needed and board space is less constrained than thermal budget |
| BZX84C12LT1G | Same 12 V spec, but SOT-23 package; 350 mW rating; 20 Ω ZZT; higher thermal mass | Larger footprint; better heat dissipation but incompatible with ultra-dense layouts | Select when higher power handling is required and dual-Zener functionality is not needed |
Compared with MMBZ5242BS-7-F and BZX84C12LT1G, BZX84C12S-7-F uniquely delivers dual 12 V Zeners in the smallest possible footprint while maintaining 200 mW rating and tight voltage tolerance-ideal for space-limited dual-reference or redundancy designs.
Availability
BZX84C12S-7-F is available at Aetrix Electronics and suitable for portable battery monitoring, industrial sensor signal conditioning, USB-C power delivery clamp, and automotive body control module applications requiring stable component supply and consistent parametric performance across production batches.
Supply support for BZX84C12S-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, manufacturing, and sales operations across Asia, Europe, and North America.
The BZX84C series belongs to Diodes' precision Zener diode product line, engineered specifically for compact, low-power voltage reference and regulation in consumer, industrial, and automotive electronics where size, reliability, and RoHS compliance are critical.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The BZX84C12S-7-F has a nominal zener voltage of 12 V with a guaranteed range of 11.4 V to 12.7 V at 5 mA test current. Breakdown occurs sharply within this range; operation below 11.4 V remains in high-impedance reverse blocking mode with ≤0.1 µA leakage at 8.0 V.
Can this device be used in parallel for higher power handling?
No - due to inherent unit-to-unit zener voltage variation (±5%), paralleling multiple BZX84C12S-7-F units causes current hogging and thermal instability. For higher power, select a single higher-rated Zener such as BZX84C12LT1G (350 mW, SOT-23).
Is the SOT-363 package compatible with standard reflow profiles?
Yes - the SOT-363 package is qualified for lead-free reflow per J-STD-020D Level 1, with peak temperature up to 260 °C. Diodes Inc. specifies ramp rates and time-above-liquidus consistent with IPC-7095 guidelines for small-outline packages.
Does the dual-Zener configuration share a common cathode internally?
Yes - per the official Diodes Inc. schematic and top-view marking diagram, Pins 2 (C1) and 5 (C2) are internally bonded to the same cathode node, forming a dual-anode, single-cathode structure ideal for matched reference generation or redundancy without external wiring.
BZX84C12S-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-F FAQ
1.How can I place an order for BZX84C12S-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C12S-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 BZX84C12S-7-F reliable?
The price and inventory of BZX84C12S-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 BZX84C12S-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C12S-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C12S-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C12S-7-F?
BZX84C12S-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C12S-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 BZX84C12S-7-F?
For technical support, including BZX84C12S-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C12S-7-F requirements.
6.How does Aetrix verify that BZX84C12S-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C12S-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 BZX84C12S-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C12S-7-F?
All BZX84C12S-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C12S-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 BZX84C12S-7-F part is unused and in its original packaging.
Return procedure for BZX84C12S-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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Diodes Incorporated
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