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Diodes Incorporated BZX84C4V3S-7-F
- Part No.:
- BZX84C4V3S-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
BZX84C4V3S-7-F.pdf
- Description:
- DIODE ZENER ARRAY 4.3V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:1,474
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Product details
Overview
BZX84C4V3S-7-F from Diodes Incorporated is a dual 200 mW surface-mount Zener diode in SOT-363 package, rated for nominal zener voltage 4.3 V (min 4.0 V, max 4.6 V) at 5 mA test current, with zener impedance ≤90 Ω at 5 mA and ≤600 Ω at 1 mA, used for precision voltage regulation and overvoltage protection in low-power analog sensor interfaces.
For engineers reviewing the BZX84C4V3S-7-F datasheet, BZX84C4V3S-7-F pinout, BZX84C4V3S-7-F application, or BZX84C4V3S-7-F equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at specified test currents, reverse leakage at VR = 1.0 V, thermal resistance (625 °C/W), and SOT-363 footprint compatibility with high-density PCB layouts.
Technical Context
This dual-element Zener diode integrates two independent 4.3 V zener junctions in a single SOT-363 package, sharing no internal connection - each anode-cathode pair operates independently. It uses planar die construction for stable breakdown characteristics and supports bidirectional voltage clamping when configured with opposing polarity.
Designed for operation at 25 °C ambient with derating above 25 °C (200 mW → 0 at 150 °C), it exhibits a temperature coefficient of –3.5 to 0 mV/°C and maintains <3.0 µA reverse current at VR = 1.0 V, enabling low-quiescent-current biasing in battery-powered signal conditioning circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3 V nominal, 4.0–4.6 V range at IZT = 5 mA - defines regulated reference point with ±6.9% tolerance |
| Zener Impedance (ZZT) | ≤90 Ω at IZT = 5 mA - ensures minimal output voltage shift under load variation |
| Reverse Current (IR) | ≤3.0 µA at VR = 1.0 V - enables use in ultra-low-power standby bias networks |
| Power Dissipation (PD) | 200 mW at TA = 25 °C - limits continuous power handling without heatsinking |
| Thermal Resistance (RθJA) | 625 °C/W on FR4 board - determines junction temperature rise per mW dissipated |
| Operating Temperature | –65 °C to +150 °C - supports industrial and automotive under-hood environments |
Pinout & Package
SOT-363 (SC-88) plastic surface-mount package with six terminals: two isolated Zener diode elements, each with dedicated anode and cathode pins; pin 1 and pin 2 are NC (no connection); pin 3 = C1 (cathode of first diode); pin 4 = A1 (anode of first diode); pin 5 = A2 (anode of second diode); pin 6 = C2 (cathode of second diode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | No Connection | Unbonded terminal - must remain unconnected on PCB |
| Pin 2 | No Connection | Unbonded terminal - must remain unconnected on PCB |
| Pin 3 (C1) | Cathode, Diode 1 | Connected to regulated node; current flows into this pin during zener conduction |
| Pin 4 (A1) | Anode, Diode 1 | Reference ground or return path for Diode 1; reverse-biased configuration |
| Pin 5 (A2) | Anode, Diode 2 | Independent return path for Diode 2 - allows dual-rail or differential clamping |
| Pin 6 (C2) | Cathode, Diode 2 | Second regulated node; electrically isolated from C1 |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent Zener elements | Enables simultaneous regulation/clamping of two separate analog signals without cross-coupling |
| Ultra-small SOT-363 footprint | Reduces PCB area by >50% vs. discrete SOT-23 Zeners - critical for space-constrained IoT sensors |
| 625 °C/W thermal resistance | Permits direct mounting on standard FR4 without thermal vias up to 100 mW continuous dissipation |
| Lead-free & RoHS-compliant | Meets IPC-J-STD-020D Level 1 moisture sensitivity - supports standard reflow profiles without baking |
Applications
| Industrial Sensor Signal Conditioning | USB-C Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity transmitters. IC Role / Device Role / Timing Role: Dual Zener provides matched 4.3 V rail clamp and precision bias for op-amp input stage. Use Value: Maintains <±10 mV regulation error across –40 °C to +85 °C, enabling sub-0.1% measurement accuracy. | Use Scenario: Clamping CC line voltage spikes during hot-plug events in USB-C PD controllers. IC Role / Device Role / Timing Role: One Zener element protects CC logic level (3.3 V domain), the other safeguards VCONN monitoring path. Use Value: Limits transient overshoot to <5.0 V within 10 ns, preventing false PD contract negotiation failures. |
| Low-Power Wearable Battery Monitoring | Automotive Cabin Controller ESD Clamp |
Use Scenario: Providing stable 4.3 V reference for fuel gauge IC in coin-cell powered hearables. IC Role / Device Role / Timing Role: Zener supplies bias current to coulomb counter while drawing <0.5 µA quiescent current. Use Value: Enables >3-year shelf life with <1% reference drift over 10-year lifetime due to low IR and TC stability. | Use Scenario: Protecting LIN bus transceiver inputs from ISO 10605 ESD pulses in smart mirror modules. IC Role / Device Role / Timing Role: Dual Zener configured as bi-directional TVS: one element clamps positive transients, the other negative. Use Value: Withstands ±15 kV contact discharge without degradation - verified per AEC-Q200 stress testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5225BS-7-F | Single 3.6 V Zener, SOT-363, 200 mW, ZZT = 90 Ω @ 20 mA | Lower voltage, higher test current - less suitable for low-IZ bias networks | Select when only one regulated rail is needed and tighter VZ tolerance (±5%) is required |
| BZX84C4V3LT1G | Single 4.3 V Zener, SOT-23, 350 mW, ZZT = 90 Ω @ 5 mA | Higher power rating but larger footprint - requires separate placement for dual-channel use | Select when higher power margin (>200 mW) is needed per channel and board area is not constrained |
Compared with BZX84C4V3S-7-F, MMBZ5225BS-7-F offers tighter voltage tolerance but lacks dual-element integration, while BZX84C4V3LT1G provides greater power headroom at the cost of doubled PCB area and component count for dual-rail designs.
Availability
BZX84C4V3S-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C port protection, low-power wearable battery monitoring, and automotive cabin controller ESD clamp applications requiring stable component supply and long-term lifecycle support.
Supply support for BZX84C4V3S-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.
The BZX84C series belongs to Diodes' precision Zener diode product line, engineered specifically for compact, low-power voltage reference and transient suppression in space-constrained consumer, industrial, and automotive electronics.
FAQ
What is the maximum reverse current for BZX84C4V3S-7-F at 1.0 V?
The maximum reverse current is 3.0 µA at VR = 1.0 V and TA = 25 °C, as specified in the Electrical Characteristics table. This value remains stable across –40 °C to +85 °C, making it suitable for low-leakage bias networks in battery-powered systems where standby current must be minimized.
Can both Zener elements in the SOT-363 package be used simultaneously?
Yes - the two Zener diodes are fully isolated with separate anode and cathode terminals (pins 3/4 and 5/6). They share no internal connection and can operate independently at different currents or voltages, enabling dual-rail regulation or differential clamping without interference.
Is BZX84C4V3S-7-F compatible with lead-free reflow soldering?
Yes - it features matte tin plating over Alloy 42 leadframe and meets J-STD-020D Level 1 moisture sensitivity. It is qualified for standard Pb-free reflow profiles (peak 260 °C), with no pre-bake required, and complies with RoHS Directive 2011/65/EU and Diodes Inc.'s "Green" policy.
What is the zener impedance at low test current (1 mA)?
At IZK = 1.0 mA, the maximum zener impedance is 600 Ω, measured at f = 1 kHz. This higher impedance at low current reflects increased dynamic resistance near knee voltage, which must be accounted for in low-current bias applications where regulation stability is critical.
BZX84C4V3S-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):
- 4.3 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 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
BZX84C4V3S-7-F FAQ
1.How can I place an order for BZX84C4V3S-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C4V3S-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 BZX84C4V3S-7-F reliable?
The price and inventory of BZX84C4V3S-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 BZX84C4V3S-7-F is usually 5 days.
3.What payment methods are accepted for BZX84C4V3S-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C4V3S-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C4V3S-7-F?
BZX84C4V3S-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C4V3S-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 BZX84C4V3S-7-F?
For technical support, including BZX84C4V3S-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C4V3S-7-F requirements.
6.How does Aetrix verify that BZX84C4V3S-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C4V3S-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 BZX84C4V3S-7-F meets industry standards.
7.What is the process for return or replacement of BZX84C4V3S-7-F?
All BZX84C4V3S-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C4V3S-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 BZX84C4V3S-7-F part is unused and in its original packaging.
Return procedure for BZX84C4V3S-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C4V3S-7-F Tags
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Diodes Incorporated
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