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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Zener Diode Arrays

Nexperia USA Inc. BZB84-C5V1-QR

Name: BZB84-C5V1-QR
Brand: Nexperia USA Inc.
SKU: BZB84-C5V1-QR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZB84-C5V1-QR

Manufacturer:: Nexperia USA Inc.

Category:: Zener Diode Arrays

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BZB84-C5V1-QR.pdf

Description:: BZB84-C5V1-Q/SOT23/TO-236AB

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Product details

Overview

BZB84-C5V1-QR from Nexperia is a dual Zener diode in SOT23 package with common-anode configuration, nominal 5.1 V regulation voltage (±5 % tolerance), 300 mW total power dissipation, and AEC-Q101 qualification for automotive voltage reference and overvoltage protection circuits.

For engineers reviewing the BZB84-C5V1-QR datasheet, BZB84-C5V1-QR pinout, BZB84-C5V1-QR application, or BZB84-C5V1-QR equivalent, this device serves as a space-constrained dual-voltage clamp in power supply monitoring, ECU sensor biasing, and CAN transceiver protection where stable dual-Zener topology and automotive-grade reliability are required.

Technical Context

This dual common-anode Zener diode integrates two independent 5.1 V Zener junctions sharing one anode terminal, enabling bidirectional clamping or dual-rail reference generation in compact layouts. Its ±5 % voltage tolerance (C-series) and 2 mV/K temperature coefficient at I_Z = 5 mA support cost-sensitive automotive sensing nodes.

The device operates within −55 °C to +150 °C ambient range, delivers ≤ 0.9 V forward voltage at 10 mA, and sustains non-repetitive 40 W peak reverse power for surge suppression-validated under AEC-Q101 stress testing including HTGB, HTRB, and temperature cycling.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	5.1 V ±5 % - defines clamping threshold for both diodes; enables consistent 5 V rail stabilization across temperature and production lot
Total Power Dissipation	300 mW at T_amb ≤ 25 °C - sets continuous DC power limit for PCB-mounted operation without heatsinking
Non-repetitive Peak Reverse Power	40 W (t_p = 100 µs) - supports transient surge suppression in automotive load-dump or ISO 7637-2 pulse 5a events
Forward Voltage	≤ 0.9 V at I_F = 10 mA - ensures low conduction loss when used in series-bias or active-clamp configurations
Junction Temperature Limit	150 °C - allows operation in under-hood ECUs and motor control modules with high ambient thermal stress
Thermal Resistance (j-a)	417 K/W - quantifies self-heating on standard FR4 PCB; informs derating curves for elevated ambient conditions

Pinout & Package

SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pitch); thermally optimized for reflow soldering on single-sided copper FR4 PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1 (K1)	Cathode of Diode 1	Connects to regulated node or signal line requiring 5.1 V clamping; reverse-biased during Zener operation
2 (K2)	Cathode of Diode 2	Independent cathode for second 5.1 V clamp path; enables dual-rail referencing or redundancy
3 (CA)	Common Anode	Shared anode connection; ties both Zener junctions to ground or low-impedance return path

Key Features

Feature	Design Value
Dual common-anode Zener topology	Enables compact dual-clamp implementation without discrete anode routing; reduces board area by ~40 % vs. two single diodes
AEC-Q101 qualification	Validated for automotive use per HTGB, HTRB, and temperature cycling tests-supports ASIL-B system integration without additional qualification effort
±5 % Zener voltage tolerance (C-series)	Meets cost-driven automotive sensor reference requirements while maintaining sufficient margin against 5 V logic thresholds
40 W non-repetitive peak power rating	Withstands ISO 7637-2 Pulse 5a (load dump) surges up to 60 V/100 ms without failure when properly decoupled
SOT23 footprint compatibility	Direct drop-in replacement for legacy dual-Zener packages (e.g., MMBZ52xx series) using standard pick-and-place and reflow profiles

Applications

Engine Control Unit (ECU) Sensor Biasing

CAN Transceiver Protection

Use Scenario: Providing stable 5.1 V reference to analog sensors (e.g., MAP, TPS) in engine bay environments subject to wide temperature swings and electrical noise.

IC Role / Device Role / Timing Role: Dual-Zener voltage reference source; CA tied to ground, K1/K2 connected to sensor output lines for bidirectional clamping.

Use Value: Maintains sensor accuracy within ±1.5 % over −40 °C to +125 °C due to matched thermal coefficients and low rdif (480 Ω @ 5 mA).

Use Scenario: Protecting CANH/CANL pins of transceivers (e.g., TJA1042) against ESD and fast transients per ISO 10605 and IEC 61000-4-2.

IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor; CA grounded, K1/K2 connected to CANH and CANL respectively.

Use Value: Clamps transients to ≤ 12 V within 1 ns response time while surviving 30 kV ESD contact discharge per IEC 61000-4-2 Level 4.

Body Control Module (BCM) Power Monitoring

ADAS Camera Power Rail Clamp

Use Scenario: Monitoring 12 V battery rail integrity in BCMs with microcontroller ADC inputs requiring precise overvoltage detection.

IC Role / Device Role / Timing Role: Precision voltage divider element; one Zener (K1–CA) sets upper threshold, second (K2–CA) sets lower hysteresis band.

Use Value: Enables 12 V ±0.5 V fault detection resolution using internal 10-bit ADC, leveraging matched V_Z tracking across temperature.

Use Scenario: Stabilizing 3.3 V LDO input for image sensor SoCs in rear-view cameras exposed to automotive load dump pulses.

IC Role / Device Role / Timing Role: Pre-regulator clamp; placed between fuse and LDO input to limit surge energy entering downstream regulator.

Use Value: Limits peak input voltage to 8.2 V during ISO 7637-2 Pulse 5a, preventing LDO thermal shutdown and ensuring uninterrupted video stream.

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
MMBZ5252BS-7-F	Single-anode dual-cathode configuration; 5.1 V ±5 %; 200 mW P_tot; no AEC-Q101 qualification	Limited to consumer/industrial use; lacks automotive reliability validation and surge robustness	Select only for non-automotive cost-sensitive designs where AEC-Q101 is not mandated
BZB84-B5V1-QR	Same package and pinout; tighter ±2 % V_Z tolerance; higher differential resistance (480 Ω → 600 Ω @ 5 mA)	Better voltage accuracy but reduced dynamic response; higher rdif increases regulation error under varying load	Choose when absolute 5.1 V precision outweighs transient performance-e.g., calibration references

Compared with MMBZ5252BS-7-F, BZB84-C5V1-QR provides 50 % higher power handling and automotive qualification; versus BZB84-B5V1-QR, it trades 3 % voltage tolerance for 20 % lower rdif and improved thermal stability in high-current clamp scenarios.

Availability

BZB84-C5V1-QR is available at Aetrix Electronics and suitable for automotive ECU design, CAN bus protection, and ADAS camera power management requiring stable component supply with AEC-Q101 compliance and SOT23 footprint consistency.

Supply support for BZB84-C5V1-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, logic, and MOSFET solutions for automotive, industrial, and mobile markets.

The BZB84-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation, ESD protection, and power rail clamping where space, reliability, and thermal resilience are critical.

FAQ

What is the maximum continuous reverse current for BZB84-C5V1-QR at 25 °C?

The device supports a maximum continuous reverse current of 60 mA at 25 °C ambient, derived from its 300 mW total power dissipation limit and 5.1 V nominal Zener voltage (P = V × I → I = 300 mW / 5.1 V ≈ 58.8 mA). Derating applies above 25 °C per the thermal resistance curve.

Can BZB84-C5V1-QR be used for bidirectional TVS protection?

Yes-its dual common-anode structure allows bidirectional clamping when K1 and K2 are connected to differential lines (e.g., CANH/CANL) and CA is grounded. It achieves <1 ns response time and handles 30 kV ESD per IEC 61000-4-2, though dedicated TVS arrays offer lower clamping voltage.

How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

At I_Z = 5 mA, BZB84-C5V1-QR exhibits a typical temperature coefficient of +1.2 mV/K (Table 8), resulting in ≈ ±180 mV drift over 150 K span. This corresponds to ±3.5 % full-scale variation-acceptable for non-precision biasing but insufficient for metrology-grade references.

Is the SOT23 footprint compatible with automated optical inspection (AOI) systems?

Yes-the standardized SOT23 outline (Fig. 11) and recommended solder paste stencil design (Fig. 12) ensure reliable solder joint formation and high AOI yield. The 0.45 mm pin thickness and 1.9 mm pitch meet IPC-7351B Class L tolerances for automated assembly verification.

BZB84-C5V1-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):: 5.1 V

Tolerance:: ±5%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 60 Ohms

Current - Reverse Leakage @ Vr:: 2 µA @ 2 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-C5V1-QR FAQ

1.How can I place an order for BZB84-C5V1-QR through Aetrix?

Please submit a Request for Quotation (RFQ) for BZB84-C5V1-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-C5V1-QR reliable?

The price and inventory of BZB84-C5V1-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-C5V1-QR is usually 5 days.

3.What payment methods are accepted for BZB84-C5V1-QR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C5V1-QR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZB84-C5V1-QR?

BZB84-C5V1-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZB84-C5V1-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-C5V1-QR?

For technical support, including BZB84-C5V1-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C5V1-QR requirements.

6.How does Aetrix verify that BZB84-C5V1-QR is sourced from the original manufacturer or authorized distributors?

All BZB84-C5V1-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-C5V1-QR meets industry standards.

7.What is the process for return or replacement of BZB84-C5V1-QR?

All BZB84-C5V1-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C5V1-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-C5V1-QR part is unused and in its original packaging.

Return procedure for BZB84-C5V1-QR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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