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Nexperia USA Inc. BZB84-C75-QR
- Part No.:
- BZB84-C75-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C75-QR.pdf
- Description:
- BZB84-C75-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,837
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Product details
Overview
BZB84-C75-QR from Nexperia is a dual common-anode Zener diode in SOT23 package, rated for 75 V nominal working voltage (±5 % tolerance), 300 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation. It provides precise dual-voltage clamping in compact space-constrained designs such as ECU power rail protection and sensor biasing.
For engineers reviewing the BZB84-C75-QR datasheet, BZB84-C75-QR pinout, BZB84-C75-QR application, or BZB84-C75-QR equivalent, key selection criteria include its dual-Zener topology with shared anode, 75 V Zener voltage tolerance, non-repetitive surge capability up to 40 W, and automotive-grade reliability under -55 °C to +150 °C ambient conditions.
Technical Context
This device integrates two independent Zener diodes sharing a common anode terminal (Pin 3), enabling bidirectional voltage regulation or dual-rail clamping from a single footprint. Each diode operates at 75 V nominal Zener voltage with ±5 % tolerance (C-series) and exhibits 500 Ω typical differential resistance at IZ = 2 mA.
It supports transient suppression per IEC 61000-4-5 with 40 W non-repetitive peak reverse power (tp = 100 µs), and maintains stable regulation across -55 °C to +150 °C junction temperature, validated per AEC-Q101 stress testing including HTGB, HTRB, and temperature cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 75 V nominal, ±5 % tolerance - ensures predictable clamping threshold for overvoltage protection in 12 V/24 V automotive systems. |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines continuous thermal limit on standard FR4 PCB with single-sided copper. |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W (tp = 100 µs) - enables robust handling of short-duration transients like load dump or ISO 7637-2 pulse 5a. |
| Differential Resistance (rdif) | 500 Ω max at IZ = 2 mA - determines regulation stiffness and output voltage deviation under varying load current. |
| Reverse Current (IR) | 0.05 µA max at VR = 57 V - confirms low leakage below knee voltage, critical for low-power sensor reference stability. |
| Thermal Resistance (Rth(j-a)) | 417 K/W - quantifies junction-to-ambient heat transfer efficiency on standard PCB, guiding derating above 25 °C ambient. |
| Operating Temperature | -55 °C to +150 °C - validated for under-hood automotive environments including engine control modules and body controllers. |
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 with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 (Cathode, Diode 1) | Connects to regulated node 1; reverse-biased during Zener operation to clamp at 75 V relative to common anode. |
| 2 | K2 (Cathode, Diode 2) | Connects to regulated node 2; enables independent clamping of second rail or bidirectional protection path. |
| 3 | CA (Common Anode) | Shared anode reference point; ties both diodes to system ground or common bias rail for dual-rail symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode Zener topology | Enables compact dual-voltage regulation or symmetrical bidirectional clamping without discrete component duplication. |
| AEC-Q101 qualification | Validated for automotive use including HTGB (1000 h @ 150 °C), HTRB (1000 h @ 125 °C, 1.1×VRWM), and mechanical shock/vibration. |
| 75 V Zener voltage with ±5 % tolerance | Meets ISO 16750-2 load-dump immunity requirements for 24 V systems while allowing margin for temperature drift. |
| 40 W non-repetitive surge rating | Supports compliance with ISO 7637-2 Pulse 5a (load dump) without external TVS augmentation in cost-sensitive ECUs. |
| SOT23 footprint compatibility | Direct replacement for legacy single-Zener SOT23 parts; allows dual-rail protection upgrade without PCB redesign. |
Applications
| Automotive Engine Control Unit (ECU) Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 5 V and 3.3 V microcontroller supply rails from load dump transients in 24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Dual-Zener clamping device providing simultaneous overvoltage limiting on two independent regulated outputs referenced to common ground. Use Value: Eliminates need for two separate SOT23 Zeners, reducing BOM count by 1 part and PCB area by 30 % while maintaining AEC-Q101 compliance. |
Use Scenario: Stabilizing reference voltage for analog front-end circuits in industrial pressure/temperature transmitters operating in harsh 4–20 mA loop environments. IC Role / Device Role / Timing Role: Precision voltage reference shunt regulator establishing stable bias points for op-amp input stages and ADC reference dividers. Use Value: ±5 % VZ tolerance and <0.05 µA leakage at 57 V ensure <0.1 % reference drift over temperature, meeting SIL-2 functional safety signal integrity requirements. |
| Automotive Body Control Module (BCM) CAN Transceiver Biasing | Consumer Appliance Motor Drive Gate Protection |
Use Scenario: Providing isolated 5 V and 3.3 V bias rails for high-speed CAN FD transceivers in door module electronics exposed to battery voltage fluctuations. IC Role / Device Role / Timing Role: Dual-rail Zener regulator supplying clean, noise-immune supply to CAN PHY and controller logic sections. Use Value: Common-anode architecture ensures matched thermal drift between rails, minimizing inter-rail offset and preserving CAN common-mode rejection ratio (CMRR) > 30 dB. |
Use Scenario: Clamping gate-source voltage of N-channel MOSFETs in BLDC motor inverters subjected to inductive switching spikes during commutation. IC Role / Device Role / Timing Role: Fast-response voltage limiter preventing gate oxide breakdown by clamping VGS to safe levels during dV/dt events. Use Value: 40 W surge rating absorbs 100 µs spikes up to 100 V without degradation, extending MOSFET lifetime beyond 100,000 cycles in white-goods applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5270BS | Single Zener, 75 V, ±5 %, SOT23 - lacks dual-cathode topology and common-anode integration. | Requires two devices for dual-rail use; increases layout complexity and thermal coupling uncertainty. | Select when only single-rail clamping is needed or when ON Semi's qualification documentation is mandated. |
| Vishay SMBZ5270-E3/52 | Single Zener, 75 V, ±5 %, SOD-123 - larger footprint (3.7 mm × 1.6 mm), higher Rth(j-a) (300 K/W), no dual-diode integration. | Not suitable for space-constrained dual-rail designs; limited surge capability (25 W PZSM). | Prefer for high-reliability industrial power supplies where SOD-123 mechanical robustness outweighs density requirements. |
Compared with MMBZ5270BS and SMBZ5270-E3/52, BZB84-C75-QR uniquely delivers dual 75 V Zener regulation in one SOT23 device, reducing component count by 50 % and improving thermal tracking between rails-critical for automotive ECU voltage monitoring accuracy.
Availability
BZB84-C75-QR is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, and consumer appliance motor drive protection requiring stable component supply with AEC-Q101 traceability and full production lifecycle support.
Supply support for BZB84-C75-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-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation and transient suppression where space, reliability, and thermal performance are critical.
FAQ
What is the maximum continuous reverse current for BZB84-C75-QR at 75 V?
The device is not rated for continuous conduction at 75 V; it operates in Zener breakdown mode only under controlled current. Maximum DC reverse current is limited by Ptot = 300 mW, yielding IZ ≤ 4 mA at VZ = 75 V. Exceeding this risks thermal runaway due to positive temperature coefficient above 6 V.
Can BZB84-C75-QR replace two separate 75 V Zeners in a design?
Yes-it integrates two 75 V Zener diodes with a shared anode (Pin 3), allowing direct substitution for dual-SOT23 layouts. Pin 1 and Pin 2 serve as independent cathodes, enabling simultaneous regulation of two nodes while maintaining thermal coupling and footprint reduction.
Is the 40 W surge rating applicable to both diodes simultaneously?
No-the 40 W non-repetitive peak reverse power (PZSM) applies per diode. When both diodes conduct simultaneously under surge, total device dissipation must remain within 300 mW steady-state limit; surge energy must be allocated to one diode at a time per application circuit design.
How does the ±5 % tolerance affect voltage regulation accuracy in automotive systems?
At 75 V nominal, ±5 % means VZ ranges from 71.25 V to 78.75 V. This aligns with ISO 16750-2 load-dump test limits (up to 110 V for 24 V systems), ensuring clamping occurs before downstream IC damage while accommodating manufacturing variation and temperature drift (SZ = +0.05 mV/K typical).
BZB84-C75-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):
- 75 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 255 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 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-C75-QR FAQ
1.How can I place an order for BZB84-C75-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C75-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-C75-QR reliable?
The price and inventory of BZB84-C75-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-C75-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C75-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C75-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C75-QR?
BZB84-C75-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C75-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-C75-QR?
For technical support, including BZB84-C75-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C75-QR requirements.
6.How does Aetrix verify that BZB84-C75-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C75-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-C75-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C75-QR?
All BZB84-C75-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C75-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-C75-QR part is unused and in its original packaging.
Return procedure for BZB84-C75-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C75-QR Tags
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MMBZ18VALT1G
onsemi
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AZ23C18-7-F
Diodes Incorporated
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MMBZ6V2ALT1G
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MMBZ5V6ALT1G
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MMBZ6V8ALT1G
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MMBZ5V6ALT3G
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MMBZ33VALT1G
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MMBZ9V1ALT1G
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MMBZ20VALT1G
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SZMMBZ27VALT1G
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MMBZ15VALT1G
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MMBZ12VALT1G
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