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Nexperia USA Inc. BZB84-C24-QR
- Part No.:
- BZB84-C24-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C24-QR.pdf
- Description:
- BZB84-C24-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,856
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Product details
Overview
BZB84-C24-QR from Nexperia is a dual Zener diode in SOT23 package with common-anode configuration, rated for 24 V nominal Zener voltage (±5 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation. It provides precise dual-voltage reference and overvoltage clamping in compact space-constrained designs such as engine control units and body electronics.
For engineers reviewing the BZB84-C24-QR datasheet, BZB84-C24-QR pinout, BZB84-C24-QR application, or BZB84-C24-QR equivalent, this page delivers verified electrical parameters, automotive-grade thermal performance, dual-diode functional mapping, and real-world use context for robust circuit protection and reference design.
Technical Context
This dual Zener diode integrates two independent Zener elements sharing a common anode terminal, enabling simultaneous regulation or clamping at identical or asymmetric voltages when paired with external components. Its ±5 % voltage tolerance (C-series) and low temperature coefficient (±0.05 mV/K typical at IZ = 5 mA) support stable reference generation across automotive ambient ranges (−55 °C to +150 °C).
The device sustains non-repetitive peak reverse power up to 40 W (100 µs square wave) and operates with ≤ 0.9 V forward voltage at 10 mA, ensuring fast transient response and low conduction loss during forward-biased conditions. Thermal resistance from junction to solder point is 100 K/W, facilitating reliable heat transfer in FR4 PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.8 V to 25.6 V at IZ = 5 mA - defines clamping threshold with ±5 % tolerance for predictable overvoltage protection. |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB. |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for 100 µs pulse - enables surge suppression of short-duration transients like load dump spikes. |
| Differential Resistance (rdif) | 250 Ω max at IZ = 5 mA - determines regulation stiffness; lower values improve voltage stability under varying load current. |
| Reverse Current (IR) | ≤ 0.05 µA at VR = 17.3 V - ensures minimal leakage below breakdown, critical for low-power standby circuits. |
| Junction Temperature (Tj) | 150 °C maximum - supports operation in under-hood automotive environments without derating at full power. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm, 1.9 mm pitch); thermally optimized for reflow/wave soldering per Nexperia footprint guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node for first Zener path; reverse-biased during clamping. |
| 2 (K2) | Cathode of Diode 2 | Independent cathode for second Zener element; enables dual-rail or redundancy schemes. |
| 3 (CA) | Common Anode | Shared anode connection; ties both Zeners to ground or reference potential in single-point return layout. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener with common anode | Enables compact dual-voltage reference or bidirectional clamping without discrete pairing or extra routing. |
| AEC-Q101 qualified | Validated for automotive applications including powertrain and chassis systems with zero early-life failure requirements. |
| ±5 % Zener voltage tolerance (C-series) | Provides cost-optimized precision for non-critical regulation where tighter tolerance is unnecessary. |
| Low thermal resistance (Rth(j-sp) = 100 K/W) | Supports sustained 300 mW dissipation with minimal junction-to-solder-point temperature rise on standard PCBs. |
| Non-repetitive 40 W surge rating | Withstands ISO 7637-2 Pulse 1/2a/5a transients without degradation when used with appropriate series impedance. |
Applications
| Engine Control Unit (ECU) Sensor Reference | Body Control Module (BCM) Power Rail Clamp |
|---|---|
Use Scenario: Providing stable 24 V reference for analog sensor signal conditioning in diesel ECU subsystems. IC Role / Device Role / Timing Role: Dual Zener acts as precision shunt reference and transient suppressor for 5 V/3.3 V LDO input rails. Use Value: Maintains ADC accuracy within ±0.5 % over −40 °C to +125 °C ambient due to matched temperature coefficient and low rdif. |
Use Scenario: Clamping 12 V/24 V battery-supplied microcontroller I/O lines against load-dump-induced surges. IC Role / Device Role / Timing Role: Common-anode dual Zener routes surge current from two I/O pins to shared ground plane simultaneously. Use Value: Limits voltage excursion to ≤25.6 V during 40 W/100 µs transients, preventing latch-up in 3.3 V logic interfaces. |
| Automotive Infotainment Power Sequencing | ADAS Camera Module Voltage Stabilization |
Use Scenario: Enabling controlled power-up sequencing between 5 V core and 1.8 V I/O rails using Zener-triggered enable signals. IC Role / Device Role / Timing Role: One Zener leg biases a P-channel MOSFET gate; second leg monitors auxiliary rail integrity. Use Value: Achieves <5 µs response to rail faults via low-capacitance (55 pF) structure, avoiding false resets during cold cranking. |
Use Scenario: Stabilizing 2.8 V image sensor analog supply in rear-view camera modules exposed to thermal cycling. IC Role / Device Role / Timing Role: Dual Zener regulates reference for internal DAC while absorbing ESD events on analog output lines. Use Value: Delivers <10 ppm/°C drift over −40 °C to +105 °C, preserving color fidelity and reducing post-processing calibration overhead. |
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 MMBZ5242BS | Single Zener (12 V), SOT-363 package, ±5 % tolerance, 200 mW rating | Lacks dual-element integration; requires two devices for equivalent functionality | Select only when board space allows discrete duplication and thermal management is less constrained. |
| Vishay BZX84-C24-TP | Single Zener (24 V), SOT-23, ±5 %, 300 mW, no AEC-Q101 qualification | Not automotive-qualified; higher differential resistance (300 Ω vs. 250 Ω max) | Acceptable for industrial or consumer applications where AEC-Q101 compliance and tighter rdif are not required. |
Compared with MMBZ5242BS and BZX84-C24-TP, BZB84-C24-QR uniquely combines dual-Zener topology, AEC-Q101 validation, and lower dynamic impedance in a single SOT23 footprint-reducing component count, improving surge coordination, and guaranteeing automotive reliability without design compromise.
Availability
BZB84-C24-QR is available at Aetrix Electronics and suitable for automotive power management, sensor interface conditioning, and ESD-protected I/O line clamping requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZB84-C24-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 high-volume, high-reliability essential semiconductors for automotive, industrial, and computing markets, with leadership in logic, discretes, and MOSFETs.
BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio designed specifically for automotive voltage regulation, clamping, and reference functions where space, thermal performance, and qualification rigor are mandatory.
FAQ
What is the maximum continuous reverse current for BZB84-C24-QR at 24 V?
The device does not specify a maximum continuous reverse current at exactly 24 V; instead, its Zener test condition is IZ = 5 mA, where VZ is guaranteed between 22.8 V and 25.6 V. At VR = 17.3 V, reverse current is limited to ≤0.05 µA - confirming sharp knee behavior well below nominal voltage.
Can BZB84-C24-QR be used in parallel for higher power handling?
No - parallel connection of Zener diodes is not recommended due to mismatched VZ and rdif, causing current hogging and thermal runaway. For higher power, use external series resistors or dedicated TVS arrays; the device's 40 W surge rating applies only to single-pulse conditions.
How does the common-anode configuration affect PCB layout?
The common-anode (CA) pin must connect to the lowest-potential node (e.g., ground or system return), while K1 and K2 route independently to separate regulated nodes. This avoids ground loops and ensures symmetrical surge current paths - critical for EMC performance in automotive harnesses.
Is marking code 'PE%' unique to BZB84-C24-QR?
Yes - according to Nexperia's marking table, 'PE%' is the exclusive top-side laser mark for BZB84-C24-QR across all production lots, enabling unambiguous identification during automated optical inspection and traceability audits in Tier-1 manufacturing lines.
BZB84-C24-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):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 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-C24-QR FAQ
1.How can I place an order for BZB84-C24-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C24-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-C24-QR reliable?
The price and inventory of BZB84-C24-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-C24-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C24-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C24-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C24-QR?
BZB84-C24-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C24-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-C24-QR?
For technical support, including BZB84-C24-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C24-QR requirements.
6.How does Aetrix verify that BZB84-C24-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C24-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-C24-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C24-QR?
All BZB84-C24-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C24-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-C24-QR part is unused and in its original packaging.
Return procedure for BZB84-C24-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C24-QR Tags
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