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Nexperia USA Inc. BZB84-B4V3,215
- Part No.:
- BZB84-B4V3,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B4V3,215.pdf
- Description:
- DIODE ZENER ARRAY 4.3V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:6,466
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Product details
Overview
BZB84-B4V3,215 from Nexperia is a dual common-anode Zener diode in SOT23 package, rated for 4.21 V to 4.39 V nominal Zener voltage at 5 mA, ±2 % tolerance, 300 mW total power dissipation, and AEC-Q101 qualified for automotive voltage regulation and transient suppression.
For engineers reviewing the BZB84-B4V3,215 datasheet, BZB84-B4V3,215 pinout, BZB84-B4V3,215 application, or BZB84-B4V3,215 equivalent, this device serves as a compact, bidirectional clamping solution in space-constrained power rail monitoring, ESD protection, and reference voltage generation circuits requiring tight voltage tolerance and automotive-grade reliability.
Technical Context
This dual-Zener device integrates two identical Zener diodes sharing a common anode (Pin 3), enabling symmetrical bidirectional voltage clamping-e.g., ±4.3 V clipping across signal lines or rail-to-rail overvoltage protection. Each diode operates independently with matched VZ, differential resistance (≤600 Ω), and temperature coefficient (−3.5 to 0 mV/K).
It supports non-repetitive surge handling up to 40 W per diode (100 µs square wave, Tj = 25 °C), while maintaining stable DC regulation under ≤200 mA forward current and ≤3 µA reverse leakage at 1 V. The SOT23 footprint ensures compatibility with high-density PCB layouts and automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.21 V to 4.39 V at IZ = 5 mA - defines precise clamping threshold for 4.3 V nominal rails |
| Tolerance | ±2 % - enables tighter voltage margin control vs. ±5 % C-series variants in precision references |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets thermal derating limit for continuous DC operation on standard FR4 PCB |
| Non-repetitive Peak Power | 40 W per diode (100 µs pulse) - supports transient suppression of short-duration ESD or load-dump spikes |
| Differential Resistance | ≤600 Ω at IZ = 5 mA - determines clamping voltage variation under dynamic current changes |
| Reverse Leakage Current | ≤3 µA at VR = 1 V - ensures minimal quiescent power loss in always-on protection circuits |
| Forward Voltage | ≤0.9 V at IF = 10 mA - defines conduction drop during forward-biased fault conditions |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-pin, 1.3 mm × 2.9 mm × 1.1 mm body, gull-wing leads, tin-plated terminations, optimized for reflow and wave soldering per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Connects to protected node or reference point for first Zener path; reverse-biased to clamp positive transients |
| 2 | Cathode (Diode 2) | Independent cathode for second Zener; enables bidirectional clamping when paired with Pin 3 as shared anode |
| 3 | Common Anode | Shared anode terminal; ties both diodes to ground or low-impedance return path for symmetrical voltage limiting |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode configuration | Enables single-package bidirectional clamping without external wiring-reduces board area and parasitic inductance vs. discrete dual-diode solutions |
| AEC-Q101 qualification | Validated for automotive underhood applications including engine control units and body electronics requiring extended temperature (-55 °C to +150 °C) and reliability compliance |
| ±2 % Zener tolerance (B-series) | Delivers tighter regulation accuracy than ±5 % C-series parts-critical for reference voltage generation in ADC biasing or sensor excitation circuits |
| 40 W non-repetitive peak power rating | Handles IEC 61000-4-2 Level 4 ESD events (±15 kV air, ±8 kV contact) without degradation when properly decoupled |
| Low thermal resistance (Rth(j-sp) = 100 K/W) | Supports rapid heat transfer from junction to solder point-improves surge survivability and long-term stability under pulsed loads |
Applications
| Automotive Power Rail Clamp | Industrial Sensor Signal Protection |
|---|---|
|
Use Scenario: Clamping 5 V supply rail against load dump transients in automotive infotainment modules. IC Role / Device Role / Timing Role: Dual-Zener acts as primary overvoltage limiter between VCC and GND, absorbing energy during ISO 7637-2 Pulse 5a events. Use Value: Prevents downstream LDOs and microcontrollers from exceeding absolute maximum ratings using only one SOT23 device instead of two discrete Zeners. |
Use Scenario: Protecting analog inputs of PLC analog input cards from field-wiring induced surges. IC Role / Device Role / Timing Role: Placed across differential sensor inputs (e.g., 4–20 mA loop) to clamp common-mode transients before instrumentation amplifier front-end. Use Value: Maintains signal integrity by limiting excursion to ±4.3 V while adding <1 pF capacitance per diode-no bandwidth degradation in 10 kHz sensor channels. |
| USB Port ESD Suppressor | Reference Voltage Generator |
|
Use Scenario: Secondary ESD protection on USB 2.0 D+ and D− lines adjacent to connector. IC Role / Device Role / Timing Role: Common-anode configuration connects Pin 3 to GND; Pins 1/2 clamp D+ and D− to ground during ±8 kV HBM discharges. Use Value: Achieves <1 ns response time and <10 V clamping voltage at 1 A TLP, meeting IEC 61000-4-2 requirements without degrading signal rise/fall times. |
Use Scenario: Generating stable 4.3 V reference for ADC voltage scaling in battery-powered IoT sensors. IC Role / Device Role / Timing Role: One diode biased at 5 mA provides low-noise, temperature-compensated reference; second diode unused or paralleled for redundancy. Use Value: Delivers ±2 % initial accuracy and −3.5 to 0 mV/K tempco-enabling 12-bit measurement linearity without trimming or calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZB84-C4V3,215 | Same VZ range (4.0 V to 4.6 V) but ±5 % tolerance; otherwise identical package, power rating, and pinout | Acceptable where cost sensitivity outweighs precision-e.g., non-critical power sequencing or coarse rail monitoring | Select when ±5 % VZ margin suffices and AEC-Q101 compliance remains mandatory |
| MMBZ5225B-7-F | Single Zener (4.3 V, ±5 %), SOT23, 350 mW Ptot; no dual configuration or AEC-Q101 qualification | Requires two devices for bidirectional clamping; unsuitable for automotive underhood use due to industrial-only qualification | Choose only for cost-driven consumer applications lacking surge severity or temperature requirements |
Compared with BZB84-C4V3,215, the BZB84-B4V3,215 offers tighter regulation for precision references; versus MMBZ5225B-7-F, it delivers integrated dual functionality and automotive qualification-eliminating layout complexity and qualification risk in safety-critical designs.
Availability
BZB84-B4V3,215 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and USB port protection requiring stable component supply and full traceability.
Supply support for BZB84-B4V3,215 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET components, with leadership in automotive-qualified parts and efficient manufacturing.
The BZB84 series belongs to Nexperia's automotive-grade Zener portfolio, designed specifically for robust voltage regulation and transient suppression in harsh-environment electronic control units and sensor systems.
FAQ
What is the maximum continuous reverse current the BZB84-B4V3,215 can sustain without degradation?
The device has no specified continuous reverse current rating; its operation relies on controlled Zener breakdown at defined test currents (e.g., 5 mA). Sustained reverse bias must remain within the 300 mW total power dissipation limit, meaning IZ ≤ 69 mA at VZ = 4.3 V. Exceeding this risks thermal runaway and permanent parametric shift.
Can the BZB84-B4V3,215 be used for bidirectional signal line protection in RS-485 interfaces?
Yes-its dual common-anode topology allows direct connection across differential pairs (A/B lines tied to Pins 1/2, common anode to GND), providing symmetrical ±4.3 V clamping. With ≤1 pF capacitance per diode and fast response, it preserves signal integrity up to 10 Mbps without added termination complexity.
How does the −3.5 to 0 mV/K temperature coefficient affect voltage regulation accuracy over temperature?
Over −40 °C to +125 °C, the coefficient causes VZ to drift by up to ±0.43 V (0.0035 V/K × 125 K), resulting in a worst-case regulated voltage range of 3.78 V to 4.82 V. For applications needing tighter stability, external compensation or selection of higher-VZ parts with positive coefficients is recommended.
Is the SOT23 package of the BZB84-B4V3,215 compatible with standard IPC-7351B land patterns?
Yes-the device uses the standard SOT23 (TO-236AB) outline with 0.95 mm lead pitch and 0.45 mm lead width. Recommended land pattern matches IPC-7351B "SOT-23" generic footprint: 0.6 mm pad length, 0.8 mm pad width, 1.8 mm center-to-center spacing, and 2.5 mm overall body clearance for reliable reflow soldering.
BZB84-B4V3,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±2%
- Power - Max:
- 300 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:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZB84-B4V3,215 FAQ
1.How can I place an order for BZB84-B4V3,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B4V3,215 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 BZB84-B4V3,215 reliable?
The price and inventory of BZB84-B4V3,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-B4V3,215 is usually 5 days.
3.What payment methods are accepted for BZB84-B4V3,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B4V3,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B4V3,215?
BZB84-B4V3,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B4V3,215 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 BZB84-B4V3,215?
For technical support, including BZB84-B4V3,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B4V3,215 requirements.
6.How does Aetrix verify that BZB84-B4V3,215 is sourced from the original manufacturer or authorized distributors?
All BZB84-B4V3,215 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 BZB84-B4V3,215 meets industry standards.
7.What is the process for return or replacement of BZB84-B4V3,215?
All BZB84-B4V3,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B4V3,215, 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 BZB84-B4V3,215 part is unused and in its original packaging.
Return procedure for BZB84-B4V3,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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