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Nexperia USA Inc. BZB84-B12,215
- Part No.:
- BZB84-B12,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B12,215.pdf
- Description:
- DIODE ZENER ARRAY 12V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,776
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Product details
Overview
BZB84-B12,215 from Nexperia is a dual common-anode Zener diode in SOT23 package, rated for 12 V nominal Zener voltage (11.8–12.2 V), ±2 % tolerance, 300 mW total power dissipation, and AEC-Q101 qualified for automotive use. It provides bidirectional voltage regulation in compact surface-mount designs such as power rail clamping and overvoltage protection in engine control units.
For engineers reviewing the BZB84-B12,215 datasheet, BZB84-B12,215 pinout, BZB84-B12,215 application, or BZB84-B12,215 equivalent, this page delivers verified Zener voltage, differential resistance, thermal resistance, non-repetitive surge capability, and dual-diode configuration details essential for circuit protection and precision reference design.
Technical Context
This dual Zener diode integrates two independent 12 V Zener elements sharing a common anode (Pin 3), enabling symmetrical clamping of positive and negative transients across a single node. Its 150 Ω typical differential resistance at IZ = 5 mA ensures stable regulation under moderate load variation.
Designed for automotive-grade reliability, it supports non-repetitive peak reverse power dissipation up to 40 W (100 µs square wave, Tj = 25 °C) and operates across −55 °C to +150 °C ambient, with junction-to-ambient thermal resistance of 417 K/W on FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.8 V to 12.2 V at IZ = 5 mA - defines precise clamping threshold for 12 V rail protection |
| Differential Resistance (rdif) | 150 Ω max at IZ = 5 mA - determines regulation stiffness and output impedance under dynamic load |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets continuous thermal limit for steady-state operation on standard PCB |
| Non-repetitive Peak Reverse Current (IZSM) | 2.5 A at tp = 100 µs - quantifies transient surge handling capacity without damage |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - establishes forward conduction drop for bidirectional clamp behavior |
| Temperature Coefficient (SZ) | +6.0 mV/K typical - indicates positive drift of VZ with junction temperature, critical for high-temp stability |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 417 K/W - defines thermal bottleneck for power derating above 25 °C ambient |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-pin, small outline, lead pitch 0.95 mm, body size 2.9 × 1.3 × 1.0 mm, suitable for automated placement and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Provides Zener breakdown path from Pin 1 to common anode (Pin 3); used for negative-going transient suppression |
| 2 | Cathode (Diode 2) | Provides second Zener breakdown path from Pin 2 to common anode (Pin 3); enables symmetrical bidirectional clamping |
| 3 | Common Anode | Shared anode connection for both Zener diodes; serves as reference node tied to system ground or supply rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode configuration | Enables single-node bidirectional voltage clamping without external wiring-reduces board space and component count |
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics, ensuring reliability under temperature cycling and humidity stress |
| ±2 % Zener voltage tolerance (B-series) | Guarantees tight regulation window (11.8–12.2 V) for precision reference and protection circuits requiring minimal margin |
| 40 W non-repetitive peak reverse power | Supports robust ESD and load-dump transient suppression per ISO 7637-2 Pulse 5a without external TVS stacking |
| 150 °C maximum junction temperature | Permits operation in under-hood environments where ambient exceeds 105 °C, with appropriate PCB copper area |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive CAN Transceiver Voltage Clamp |
|---|---|
|
Use Scenario: Clamps 12 V battery rail against load dump spikes (up to 40 V) and alternator overshoot in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Dual Zener acts as primary overvoltage limiter before LDO regulators and microcontroller power inputs. Use Value: Prevents regulator latch-up and MCU brownout by limiting rail excursion to ≤12.2 V during 100 µs surges, leveraging 40 W peak power rating. |
Use Scenario: Protects CANH/CANL bus lines from ESD events and inductive kickback in vehicle networking nodes. IC Role / Device Role / Timing Role: Placed between CANH and CANL with common anode grounded, providing symmetric ±12 V clamping. Use Value: Maintains bus signal integrity below ISO 11898-2 thresholds using matched 12 V Zeners, avoiding false dominant/recessive state errors. |
| Industrial Sensor Signal Conditioning | Consumer Power Adapter Feedback Regulation |
|
Use Scenario: Stabilizes excitation voltage for bridge-based pressure/temperature sensors in harsh factory environments. IC Role / Device Role / Timing Role: Supplies low-drift 12 V reference to sensor Wheatstone bridge via series resistor, with Zener shunt regulation. Use Value: Achieves <±0.5 % output stability over −40 °C to +85 °C due to +6.0 mV/K temperature coefficient and low rdif. |
Use Scenario: Sets feedback threshold in secondary-side optocoupler-based regulation for 12 V AC/DC adapters. IC Role / Device Role / Timing Role: Zener diode in TL431-like shunt regulator topology, defining precise 12 V output setpoint. Use Value: Enables ±2 % output accuracy across line/load variations, meeting Energy Star Level VI standby requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242B (ON Semiconductor) | Single Zener, 12 V, ±5 %, SOT23 - lacks dual configuration and AEC-Q101 qualification | Requires two devices for bidirectional clamping; not validated for automotive temperature/humidity stress | Select only for cost-sensitive non-automotive consumer applications where dual-diode integration is unnecessary |
| BZX84-C12 (Nexperia) | Single Zener, 12 V, ±5 %, SOT23 - same package but no common-anode dual structure | Cannot provide symmetrical clamping; needs discrete pairing and layout coordination for bidirectional function | Choose when board space allows separate cathode routing and ±5 % tolerance suffices for non-critical rails |
Compared with MMBZ5242B and BZX84-C12, BZB84-B12,215 uniquely delivers integrated dual-clamp functionality, tighter ±2 % tolerance, and automotive qualification-reducing component count, validation effort, and thermal footprint in safety-critical 12 V systems.
Availability
BZB84-B12,215 is available at Aetrix Electronics and suitable for automotive ECU protection, CAN bus clamping, industrial sensor excitation, and consumer power adapter regulation requiring stable component supply and long-term lifecycle support.
Supply support for BZB84-B12,215 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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZB84 series belongs to Nexperia's automotive Zener portfolio, engineered specifically for bidirectional transient suppression and precision voltage reference in demanding vehicular environments.
FAQ
What is the maximum continuous reverse current for BZB84-B12,215 at 25 °C ambient?
The device does not specify a maximum continuous reverse current; instead, its DC operation is limited by total power dissipation of 300 mW. At nominal 12 V Zener voltage, this corresponds to a maximum continuous Zener current of 25 mA (300 mW ÷ 12 V), assuming negligible forward drop and uniform power sharing between diodes.
Can BZB84-B12,215 replace a single 12 V Zener diode in a unidirectional clamp?
Yes-it can be used as a unidirectional clamp by connecting only Pin 1 (or Pin 2) and Pin 3, leaving the unused cathode floating. However, doing so forfeits the dual-diode advantage and occupies the same PCB area as a dedicated single-Zener SOT23 part like BZX84-C12.
How does the +6.0 mV/K temperature coefficient affect regulation accuracy at 125 °C junction temperature?
From 25 °C to 125 °C, ΔT = 100 K, so VZ increases by approximately +0.6 V (6.0 mV/K × 100 K). With nominal VZ = 12.0 V, the regulated voltage shifts to ~12.6 V-within the 11.8–12.2 V room-temperature spec only if derated; actual high-temp operation must account for this +5 % drift.
Is the SOT23 package of BZB84-B12,215 compatible with standard reflow profiles for lead-free assembly?
Yes-the device is qualified for Pb-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C. The recommended reflow profile uses ramp rates ≤3 °C/s, preheat 150–200 °C, soak 180–200 °C for 60–120 s, and time above liquidus (217 °C) of 40–80 s, matching IPC-7095 guidelines for SOT23 packages.
BZB84-B12,215 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):
- 12 V
- Tolerance:
- ±2%
- Power - Max:
- 300 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:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZB84-B12,215 FAQ
1.How can I place an order for BZB84-B12,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B12,215 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-B12,215 reliable?
The price and inventory of BZB84-B12,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-B12,215 is usually 5 days.
3.What payment methods are accepted for BZB84-B12,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B12,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B12,215?
BZB84-B12,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B12,215 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-B12,215?
For technical support, including BZB84-B12,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B12,215 requirements.
6.How does Aetrix verify that BZB84-B12,215 is sourced from the original manufacturer or authorized distributors?
All BZB84-B12,215 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-B12,215 meets industry standards.
7.What is the process for return or replacement of BZB84-B12,215?
All BZB84-B12,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B12,215, 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-B12,215 part is unused and in its original packaging.
Return procedure for BZB84-B12,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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