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Nexperia USA Inc. BZB84-C15-QR
- Part No.:
- BZB84-C15-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C15-QR.pdf
- Description:
- BZB84-C15-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,869
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Product details
Overview
BZB84-C15-QR from Nexperia is a dual common-anode Zener diode in SOT23 package, rated for 15 V nominal working voltage (±5 % tolerance), 300 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation. It provides stable reference and overvoltage protection in compact space-constrained designs such as engine control units and body electronics.
For engineers reviewing the BZB84-C15-QR datasheet, BZB84-C15-QR pinout, BZB84-C15-QR application, or BZB84-C15-QR equivalent, key selection criteria include its dual-Zener topology with shared anode, ±5 % voltage tolerance, 75 Ω typical differential resistance at 5 mA, 9.2–13.0 mV/K temperature coefficient range, and non-repetitive surge capability up to 40 W.
Technical Context
This dual-Zener device integrates two independent 15 V Zener junctions sharing a common anode terminal, enabling bidirectional clamping or dual-rail reference generation from a single footprint. Its construction supports operation across −55 °C to +150 °C ambient, with thermal resistance of 417 K/W (junction-to-ambient) on standard FR4 PCB.
The device exhibits low reverse leakage (<0.05 μA at VR = 11.4 V), 75 Ω typical dynamic impedance at IZ = 5 mA, and a temperature coefficient of +9.2 to +13.0 mV/K - indicating positive drift optimized for mid-voltage stabilization where thermal compensation is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 15 V ±5 % - defines precise clamping threshold for 12 V system rails under load and temperature variation. |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB with single-sided copper. |
| Differential Resistance | 75 Ω max at IZ = 5 mA - determines output impedance and regulation error under varying load current. |
| Non-repetitive Peak Power | 40 W for tp = 100 μs - enables transient overvoltage suppression (e.g., ISO 7637-2 pulse 1/2a) without failure. |
| Reverse Leakage Current | ≤0.05 μA at VR = 11.4 V - ensures minimal quiescent current draw in always-on automotive modules. |
| Temperature Coefficient | +9.2 to +13.0 mV/K - quantifies voltage drift per degree rise, critical for high-accuracy reference stability. |
| Junction Temperature Limit | 150 °C - defines absolute thermal ceiling for reliability in under-hood environments. |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, three terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node or signal line requiring 15 V clamping; reverse-biased during Zener operation. |
| 2 (K2) | Cathode of Diode 2 | Independent cathode for second 15 V Zener path - enables dual-rail referencing or redundancy. |
| 3 (CA) | Common Anode | Shared anode connection; ties both Zener junctions to ground or negative rail in standard configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode Zener topology | Enables compact dual-voltage reference or bidirectional clamping without discrete pairing or layout duplication. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD robustness - eliminates requalification effort. |
| ±5 % voltage tolerance (C-series) | Cost-optimized precision for non-critical regulation tasks while maintaining compatibility with E24 standard voltages. |
| 40 W non-repetitive surge rating | Withstands automotive transients (e.g., load dump, inductive kick) without degradation when properly heatsinked. |
| SOT23 footprint compatibility | Direct drop-in replacement for legacy dual-Zener SOT23 devices; supports automated placement and reflow. |
Applications
| Engine Control Unit (ECU) Sensor Reference | Body Control Module (BCM) Power Rail Clamp |
|---|---|
Use Scenario: Providing stable 15 V reference for analog sensor signal conditioning circuits in engine management systems. IC Role / Device Role / Timing Role: Dual-Zener voltage reference source with common-anode configuration supplying bias to op-amps and ADC front-ends. Use Value: Maintains <±1 % reference accuracy over −40 °C to +125 °C due to matched thermal drift and low dynamic impedance. |
Use Scenario: Clamping 12 V battery-derived supply rails against load-dump transients in door module power distribution. IC Role / Device Role / Timing Role: Bidirectional overvoltage protector using both cathodes referenced to CA, absorbing energy during ISO 7637-2 Pulse 5a. Use Value: Limits rail voltage to ≤17.5 V during 40 W surges, preventing damage to downstream LDOs and microcontrollers. |
| Infotainment System Audio Bias Supply | ADAS Camera Module Voltage Stabilizer |
Use Scenario: Generating clean, low-noise bias voltage for audio amplifier stages in head-unit power management. IC Role / Device Role / Timing Role: Low-capacitance (75 pF) dual-Zener providing ripple-suppressed reference for Class AB amplifier bias networks. Use Value: Delivers <100 μVpp noise contribution and <0.5 % regulation error across 1–10 mA load range. |
Use Scenario: Stabilizing 15 V imaging sensor supply in rear-view camera modules exposed to wide ambient swings. IC Role / Device Role / Timing Role: Precision voltage regulator maintaining constant forward current for LED illumination drivers and sensor biasing. Use Value: Ensures consistent image sensor gain and white balance calibration by holding reference within ±0.2 V from −40 °C to +105 °C. |
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 |
|---|---|---|---|
| ON Semiconductor MMBZ5245BS | Single 15 V Zener in SOT23; no dual-cathode topology; 500 mW Ptot; ±5 % tolerance. | Requires two devices for dual-rail use; higher power but larger board area and BOM count. | Select when higher continuous power (>300 mW) is needed and dual-cathode integration is unnecessary. |
| Vishay SMBZ5245-E3/52 | Single 15 V Zener in SOD-123; 500 mW Ptot; ±5 %; no common-anode dual configuration. | Larger footprint; unsuitable for space-constrained dual-reference layouts; lacks AEC-Q101 certification. | Choose only for non-automotive industrial applications where SOD-123 mounting is preferred and qualification is not required. |
Compared with MMBZ5245BS and SMBZ5245-E3/52, BZB84-C15-QR uniquely delivers dual 15 V references in one AEC-Q101-qualified SOT23 device - reducing component count, PCB area, and qualification overhead in automotive ECUs and ADAS modules.
Availability
BZB84-C15-QR is available at Aetrix Electronics and suitable for automotive power management, sensor reference design, and transient protection applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 compliance.
Supply support for BZB84-C15-QR 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 essential efficiency-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, and consumer markets.
BZB84-C15-QR belongs to the BZB84-Q series of dual Zener diodes engineered specifically for AEC-Q101-compliant automotive voltage regulation and transient suppression in space-constrained SMT designs.
FAQ
What is the maximum continuous reverse current this device can handle?
The BZB84-C15-QR has a maximum continuous forward current of 200 mA per diode, but Zener operation relies on controlled reverse current. At 15 V nominal voltage and 300 mW total dissipation, the practical continuous Zener current is limited to 20 mA (300 mW ÷ 15 V), assuming both diodes share power equally in common-anode configuration.
Can this part be used in a series configuration to achieve higher clamping voltage?
No - the BZB84-C15-QR features a fixed dual-cathode/common-anode structure; its internal diodes are not isolated. Connecting multiple units in series is electrically invalid and risks unbalanced voltage division, thermal runaway, or premature failure due to mismatched Zener characteristics.
Is the marking code 'UW%' confirmed for BZB84-C15-QR?
Yes, Table 4 of the Nexperia datasheet explicitly lists BZB84-C15-Q with marking code 'UW%', verified across production lots. This laser-marked identifier appears on the top surface of the SOT23 package and is used for traceability and authenticity verification during incoming inspection.
How does the temperature coefficient affect regulation accuracy over automotive temperature ranges?
With a specified +9.2 to +13.0 mV/K coefficient, the BZB84-C15-QR's Zener voltage increases ~1.2 V from −40 °C to +125 °C. When used with a low-impedance source and proper thermal coupling, this predictable drift allows system-level compensation in closed-loop regulators or acceptable tolerance in open-loop biasing.
BZB84-C15-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZB84-Q
- 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):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZB84-C15-QR FAQ
1.How can I place an order for BZB84-C15-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C15-QR 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-C15-QR reliable?
The price and inventory of BZB84-C15-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-C15-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C15-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C15-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C15-QR?
BZB84-C15-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C15-QR 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-C15-QR?
For technical support, including BZB84-C15-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C15-QR requirements.
6.How does Aetrix verify that BZB84-C15-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C15-QR 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-C15-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C15-QR?
All BZB84-C15-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C15-QR, 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-C15-QR part is unused and in its original packaging.
Return procedure for BZB84-C15-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C15-QR Tags
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Diodes Incorporated
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