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Nexperia USA Inc. BZB84-C11-QR
- Part No.:
- BZB84-C11-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C11-QR.pdf
- Description:
- BZB84-C11-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,273
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Product details
Overview
BZB84-C11-QR from Nexperia is a dual Zener diode in SOT23 package with common-anode configuration, rated for 11 V nominal Zener voltage (±5 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation. It provides stable reference and overvoltage protection in compact space-constrained circuits such as body control modules and sensor signal conditioning.
For engineers reviewing the BZB84-C11-QR datasheet, BZB84-C11-QR pinout, BZB84-C11-QR application, or BZB84-C11-QR equivalent, key selection criteria include its dual-common-anode topology, 11 V ±5 % Zener tolerance, 85 mA non-repetitive peak reverse current, thermal resistance of 100 K/W to solder point, and automotive-grade reliability per AEC-Q101.
Technical Context
This dual Zener diode integrates two independent Zener elements sharing a common anode terminal (Pin 3), enabling bidirectional voltage clamping or dual-rail reference generation from a single SMT footprint. Its design supports simultaneous regulation of two separate nodes at identical or asymmetric voltages within the 2.4–75 V E24 range.
Each diode operates with specified differential resistance (≤150 Ω at IZ = 5 mA), temperature coefficient (5.4–9.0 mV/K at 11 V), and low reverse leakage (≤0.1 μA at VR = 8.8 V), ensuring stable regulation across automotive ambient temperatures (−55 °C to +150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 10.4–11.6 V at IZ = 5 mA; ensures precise 11 V regulation with ±5 % tolerance for supply rail monitoring |
| Total Power Dissipation | 300 mW at Tamb ≤ 25 °C; defines maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Reverse Current | 2.5 A at tp = 100 μs; supports transient surge suppression without device failure |
| Differential Resistance | ≤150 Ω at IZ = 5 mA; limits output voltage variation under load changes in reference applications |
| Reverse Leakage Current | ≤0.1 μA at VR = 8.8 V; minimizes standby power loss in battery-sensitive automotive systems |
| Thermal Resistance j-sp | 100 K/W; enables accurate junction temperature estimation using solder-point temperature in thermal design |
| AEC-Q101 Qualified | Validated for automotive use including temperature cycling, HTRB, and ESD testing per stress test standard |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, 3-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node requiring 11 V clamping; polarity must match cathode-to-load orientation |
| 2 (K2) | Cathode of Diode 2 | Enables independent clamping of second circuit node; allows dual-rail or redundancy configurations |
| 3 (CA) | Common Anode | Shared return path for both Zeners; ties to system ground or negative rail in most implementations |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Reduces PCB area by 50 % vs. two discrete SOT23 Zeners while maintaining independent cathode routing |
| ±5 % Zener tolerance (C-series) | Meets cost-optimized automotive subsystem requirements where tight voltage accuracy is secondary to robustness |
| AEC-Q101 qualification | Guarantees operation over −55 °C to +150 °C junction temperature with validated reliability for 15+ year vehicle life |
| Low thermal resistance (100 K/W j-sp) | Supports thermal-aware layout with direct copper pour under pins 1 and 2 for enhanced heat extraction |
| Non-repetitive 40 W surge rating | Withstands ISO 7637-2 pulse 1/2a/5a transients without derating when used with appropriate series impedance |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 12 V supply rails feeding microcontroller I/O and CAN transceiver biasing in door module electronics. IC Role / Device Role / Timing Role: Dual Zener provides redundant 11 V reference for ADC reference buffer and overvoltage clamp for LIN bus interface. Use Value: Eliminates need for two separate Zeners and reduces bill-of-materials count while maintaining fault-tolerant voltage supervision. |
Use Scenario: Stabilizing excitation voltage for strain-gauge bridges in factory-floor pressure transmitters operating from unregulated 24 V DC supplies. IC Role / Device Role / Timing Role: One Zener regulates bridge excitation; the other clamps amplifier input during ESD events on analog front-end traces. Use Value: Achieves <10 ppm/°C effective reference stability via matched thermal tracking of dual die in shared package. |
| Automotive Infotainment Power Sequencing | Consumer Appliance Motor Driver Protection |
Use Scenario: Controlling power-up sequence of display backlight IC and audio codec by generating clean enable signals from noisy 12 V battery line. IC Role / Device Role / Timing Role: Dual Zener creates hysteresis window for brown-out detection and provides soft-start threshold for LDO control logic. Use Value: Enables deterministic power sequencing without external comparators or RC timing networks. |
Use Scenario: Protecting gate drivers in washing machine BLDC motor inverters from voltage spikes induced by inductive kickback during PWM switching. IC Role / Device Role / Timing Role: One Zener clamps high-side driver supply; the other protects low-side bootstrap capacitor charging path. Use Value: Prevents driver latch-up and MOSFET shoot-through by limiting transient overvoltage to <13.2 V on both rails simultaneously. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5242BS | Single Zener (6.2 V), SOT363, no common-anode topology; 200 mW Ptot, ±5 % tolerance | Requires two devices for dual-rail use; lacks integrated thermal coupling between diodes | Select when only one regulated rail is needed and board space permits discrete placement |
| Vishay SMBZ5242-E3/52 | Single Zener (6.2 V), DO-214AA package; 500 mW Ptot, ±5 %, higher surge capability (100 W) | Larger footprint; unsuitable for dense automotive PCBs but preferred for high-energy industrial transients | Choose for legacy through-hole designs or where >40 W surge margin is mandatory |
Compared with BZB84-C11-QR, MMBZ5242BS requires duplication for dual functionality and offers no thermal coupling benefit, while SMBZ5242-E3/52 trades miniaturization for higher surge capacity-making BZB84-C11-QR optimal for space-constrained, AEC-Q101–compliant dual-rail regulation.
Availability
BZB84-C11-QR is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, infotainment power sequencing, and consumer appliance motor driver protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZB84-C11-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 technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
BZB84-C11-QR belongs to the AEC-Q101–qualified BZB84-Q series of dual Zener diodes, engineered specifically for automotive voltage regulation and transient protection where space, reliability, and thermal performance are critical.
FAQ
What is the maximum continuous forward current for BZB84-C11-QR?
The absolute maximum forward current per diode is 200 mA, as defined in the limiting values table. However, sustained operation above 100 mA is not recommended due to thermal constraints-junction temperature must remain below 150 °C, and total device power dissipation is capped at 300 mW at 25 °C ambient.
Can BZB84-C11-QR be used for bidirectional TVS protection?
No-BZB84-C11-QR is a Zener diode, not a TVS device. It lacks the low dynamic impedance and fast response (<1 ns) required for ESD or lightning surge suppression. Its 100 µs surge rating applies only to non-repetitive transients and does not meet IEC 61000-4-2 or -4-5 standards for TVS applications.
How does the common-anode configuration affect PCB layout?
The common-anode (Pin 3) must be routed to a low-impedance ground or negative rail, while Cathode 1 (Pin 1) and Cathode 2 (Pin 2) connect independently to their respective regulated nodes. Thermal vias under Pins 1 and 2 improve heat transfer; avoid splitting the common-anode copper pour to prevent ground bounce between channels.
Is marking code UT% unique to BZB84-C11-QR?
Yes-UT% is the official marking code for BZB84-C11-QR per Nexperia's data sheet Table 4. It appears as laser-etched alphanumeric code on the top surface of the SOT23 package and distinguishes this 11 V ±5 % dual Zener from all other variants in the BZB84-Q series, including BZB84-B11-Q (UT% is not used for B-series parts).
BZB84-C11-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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-C11-QR FAQ
1.How can I place an order for BZB84-C11-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C11-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-C11-QR reliable?
The price and inventory of BZB84-C11-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-C11-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C11-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C11-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C11-QR?
BZB84-C11-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C11-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-C11-QR?
For technical support, including BZB84-C11-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C11-QR requirements.
6.How does Aetrix verify that BZB84-C11-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C11-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-C11-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C11-QR?
All BZB84-C11-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C11-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-C11-QR part is unused and in its original packaging.
Return procedure for BZB84-C11-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C11-QR Tags
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