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Nexperia USA Inc. BZB84-C30-QR
- Part No.:
- BZB84-C30-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-C30-QR.pdf
- Description:
- BZB84-C30-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,985
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Product details
Overview
BZB84-C30-QR from Nexperia is a dual common-anode Zener diode in SOT23 package, providing precise 30 V voltage regulation with ±5 % tolerance for automotive power rail stabilization and overvoltage protection. It delivers 300 mW total power dissipation, supports 200 mA forward current per diode, and features non-repetitive peak reverse power handling up to 40 W at 100 µs pulse width.
For engineers reviewing the BZB84-C30-QR datasheet, BZB84-C30-QR pinout, BZB84-C30-QR application, or BZB84-C30-QR equivalent, key selection criteria include its AEC-Q101 qualification, dual-diode common-anode topology for compact dual-rail clamping, temperature coefficient of +21 mV/K at IZ = 2 mA, and differential resistance of 300 Ω at IZ = 2 mA.
Technical Context
This dual-Zener device integrates two independent Zener diodes sharing a common anode terminal (Pin 3), enabling simultaneous regulation or clamping of two separate voltage nodes referenced to a shared ground or supply rail. Its construction uses silicon planar epitaxial technology optimized for stable breakdown characteristics across −55 °C to +150 °C ambient range.
The device operates under two distinct Zener test conditions: 2 mA for 30 V nominal types (per Table 9), with typical reverse current <0.05 µA at 27 V and capacitance of 50 pF at 0 V. Thermal resistance from junction to solder point is 100 K/W, supporting reliable operation on standard FR4 PCBs with tin-plated copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 30 V ±5 % - defines regulated output voltage under 2 mA test current; actual working range 28.0–32.0 V. |
| Total Power Dissipation | 300 mW - maximum continuous power at Tamb ≤ 25 °C on standard FR4 PCB; derates linearly above 25 °C. |
| Non-repetitive Peak Reverse Power | 40 W - surge capability for 100 µs square-wave pulses; enables transient overvoltage suppression in automotive load-dump events. |
| Differential Resistance | 300 Ω - dynamic impedance at IZ = 2 mA; determines regulation accuracy under varying load currents. |
| Temperature Coefficient | +21 mV/K - positive drift rate at IZ = 2 mA; ensures predictable voltage shift across operating temperature range. |
| Reverse Current | <0.05 µA at VR = 27 V - low leakage below breakdown, critical for battery-backed circuits and low-power standby modes. |
| Forward Voltage | 0.9 V max at IF = 10 mA - enables use as low-drop rectifier or clamp in forward-biased configurations. |
Pinout & Package
SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch) with gull-wing leads and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K1) | Cathode of Diode 1 | Connects to regulated node or signal line requiring 30 V clamping; reverse-biased during Zener operation. |
| 2 (K2) | Cathode of Diode 2 | Independent cathode for second 30 V regulation path; enables dual-rail protection without discrete components. |
| 3 (CA) | Common Anode | Shared anode connection; ties both diodes to system ground or reference potential-critical for dual-clamp topology. |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode configuration | Reduces board space by 50 % vs. two discrete SOT23 Zeners; eliminates routing complexity for paired voltage rails. |
| AEC-Q101 qualified | Validated for automotive underhood environments including thermal cycling, humidity, and mechanical shock per JESD22 standards. |
| ±5 % voltage tolerance (C-series) | Meets cost-sensitive industrial and automotive auxiliary systems where tight regulation is secondary to reliability and footprint. |
| 40 W non-repetitive surge rating | Withstands ISO 7637-2 Pulse 1/2a/5a transients without degradation-enables direct integration into ECU power inputs. |
| 150 °C maximum junction temperature | Supports operation in high-temperature zones (e.g., near engine control units) without thermal shutdown or parameter drift. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Clamping 12 V and 24 V sensor supply lines against load dump and jump-start surges. IC Role / Device Role / Timing Role: Dual-rail Zener clamp protecting ADC front-end and microcontroller I/O pins from >40 V transients. Use Value: Eliminates need for two separate Zeners and associated PCB area; maintains <100 ns response time due to low diode capacitance (50 pF). |
Use Scenario: Protecting 4–20 mA current loop receivers from field-wiring induced voltage spikes. IC Role / Device Role / Timing Role: Common-anode shunt regulator stabilizing reference voltage while sinking fault current during overvoltage events. Use Value: Enables single-device dual-threshold clamping (e.g., 30 V on signal line, 30 V on supply rail), reducing BOM count by one component. |
| Automotive Infotainment Power Sequencing | Medical Sensor Signal Conditioning |
|
Use Scenario: Ensuring clean power-up sequencing between main SoC and display driver ICs in head-unit designs. IC Role / Device Role / Timing Role: Dual Zener providing matched 30 V reference for reset supervisor and voltage monitor comparators. Use Value: Matched temperature coefficients (+21 mV/K) minimize tracking error between dual rails, improving sequencing accuracy over −40 °C to +105 °C. |
Use Scenario: Stabilizing excitation voltage for precision strain-gauge bridges in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-leakage (<0.05 µA) Zener regulating bridge bias to maintain <0.01 % full-scale error in millivolt-level measurements. Use Value: Ultra-low IR ensures minimal current draw from battery-powered systems, extending operational life without compromising measurement fidelity. |
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 MMBZ5262B | Single 30 V Zener (SOT23); no dual-diode topology; ±5 % tolerance; 500 mW Ptot. | Requires two devices for dual-rail use; higher total footprint and assembly cost. | Select when only one regulated rail is needed or when higher power margin (>300 mW) is required per diode. |
| Vishay BZX84-C30-TP | Single 30 V Zener (SOT23); ±5 %; 300 mW; not AEC-Q101 qualified; 200 °C max Tj. | Lacks automotive qualification; unsuitable for under-hood deployment or safety-critical modules. | Select for cost-sensitive consumer or industrial applications where AEC-Q101 compliance is not mandated. |
Compared with MMBZ5262B and BZX84-C30-TP, BZB84-C30-QR uniquely delivers dual 30 V regulation in one AEC-Q101-qualified SOT23 package-reducing component count, PCB area, and qualification effort for automotive dual-rail systems.
Availability
BZB84-C30-QR is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical sensor subsystems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for BZB84-C30-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-C30-QR belongs to the BZB84-Q series of AEC-Q101-qualified dual Zener diodes, engineered specifically for space-constrained automotive voltage regulation and transient suppression where dual-rail clamping is required.
FAQ
What is the maximum continuous reverse current this device can sustain at 30 V?
The BZB84-C30-QR is rated for 200 mA forward current per diode but is not specified for continuous reverse conduction. At nominal 30 V Zener voltage, it sustains regulated operation at IZ = 2 mA (typical test condition); sustained reverse current beyond 5 mA requires thermal derating per its 300 mW Ptot limit and 417 K/W junction-to-ambient thermal resistance.
Can this device be used in parallel to increase power handling?
No-parallel connection of Zener diodes is not recommended due to mismatched breakdown voltages and thermal runaway risk. The BZB84-C30-QR's 40 W non-repetitive peak rating is designed for short-duration transients, not steady-state power sharing; use external current-limiting resistors or dedicated TVS arrays for higher energy handling.
Does the common anode configuration support independent biasing of each cathode?
Yes-Pins 1 (K1) and 2 (K2) operate as fully independent cathodes referenced to the common anode (Pin 3). Each diode regulates or clamps its respective node when reverse-biased, enabling true dual-channel functionality without electrical crosstalk or shared current paths beyond the anode connection.
How does the +21 mV/K temperature coefficient affect precision voltage references?
The +21 mV/K coefficient means the Zener voltage increases by 21 mV per Kelvin rise in junction temperature. Over a 100 °C range (−40 °C to +60 °C ambient), this introduces ~2.1 V drift-making it unsuitable for metrology-grade references but acceptable for robust power rail supervision where absolute accuracy is secondary to reliability and surge immunity.
BZB84-C30-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):
- 30 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21 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-C30-QR FAQ
1.How can I place an order for BZB84-C30-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-C30-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-C30-QR reliable?
The price and inventory of BZB84-C30-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-C30-QR is usually 5 days.
3.What payment methods are accepted for BZB84-C30-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-C30-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-C30-QR?
BZB84-C30-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-C30-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-C30-QR?
For technical support, including BZB84-C30-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-C30-QR requirements.
6.How does Aetrix verify that BZB84-C30-QR is sourced from the original manufacturer or authorized distributors?
All BZB84-C30-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-C30-QR meets industry standards.
7.What is the process for return or replacement of BZB84-C30-QR?
All BZB84-C30-QR units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-C30-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-C30-QR part is unused and in its original packaging.
Return procedure for BZB84-C30-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZB84-C30-QR Tags
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MMBZ18VALT1G
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AZ23C18-7-F
Diodes Incorporated
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