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Nexperia USA Inc. BZB84-B47,215
- Part No.:
- BZB84-B47,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B47,215.pdf
- Description:
- DIODE ZENER ARRAY 47V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,502
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Product details
Overview
BZB84-B47,215 from Nexperia is a dual common-anode Zener diode in SOT23 package, rated for 47 V nominal Zener voltage (±2 % tolerance), 300 mW total power dissipation, and 40 W non-repetitive peak reverse power. It serves voltage regulation and overvoltage protection in automotive power rails and industrial sensor interfaces.
For engineers reviewing the BZB84-B47,215 datasheet, BZB84-B47,215 pinout, BZB84-B47,215 application, or BZB84-B47,215 equivalent, this page delivers verified Zener voltage, differential resistance, thermal resistance, AEC-Q101 qualification status, and dual-diode configuration details essential for ESD-tolerant clamping and precision reference design.
Technical Context
This dual Zener diode integrates two independent 47 V Zener elements sharing a common anode (Pin 3), enabling symmetrical bidirectional clamping or independent regulation paths. Its ±2 % VZ tolerance and 375 Ω typical differential resistance at IZ = 2 mA support stable reference generation under varying load conditions.
Designed for surface-mount reliability, it features AEC-Q101 qualification, 150 °C maximum junction temperature, and FR4 PCB thermal performance with Rth(j-a) = 417 K/W. The device operates across −55 °C to +150 °C ambient, with reverse current ≤0.05 µA at VR = 37.6 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 46.1 V to 47.9 V at IZ = 2 mA - tight tolerance enables accurate voltage clamping in safety-critical automotive circuits |
| Differential Resistance (rdif) | 375 Ω max at IZ = 2 mA - low dynamic impedance ensures minimal output voltage shift during transient load changes |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines continuous DC power handling before thermal derating begins |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs - supports surge immunity against ISO 7637-2 pulse 1/2a/5a in 12 V vehicle systems |
| Reverse Current (IR) | ≤0.05 µA at VR = 37.6 V - ultra-low leakage preserves battery life in always-on automotive modules |
| Thermal Resistance (Rth(j-a)) | 417 K/W - quantifies junction-to-ambient heat transfer on standard FR4 PCB, critical for thermal margin calculation |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package: 3-pin, small outline, lead pitch 0.95 mm, body size 2.9 × 1.3 × 1.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Provides Zener breakdown path for first diode; connects to regulated node or clamp target |
| 2 | Cathode (Diode 2) | Independent cathode for second Zener; enables dual-rail clamping or redundancy |
| 3 | Common Anode | Shared anode terminal; ties both diodes to system ground or reference potential |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode topology | Enables compact bidirectional voltage clamping without external wiring-reduces PCB area by ~40% vs. discrete dual-Zener solutions |
| ±2 % Zener voltage tolerance (B-series) | Ensures predictable clamping threshold across production lots-critical for compliance with ISO 16750-2 overvoltage categories |
| AEC-Q101 qualification | Validated for automotive under-hood and infotainment applications with full stress test reporting (HTGB, H3TRB, TC) |
| 40 W non-repetitive surge capability | Withstands 100 µs transients up to 40 W-meets requirements for load-dump suppression in 12 V systems |
| Low 0.05 µA reverse leakage at 80 % VZ | Minimizes standby current in always-on ECUs-extends battery runtime in key-off scenarios |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 12 V supply rail against ISO 7637-2 Pulse 5a (load dump) transients in body control modules. IC Role / Device Role / Timing Role: Dual-Zener clamping element referenced to chassis ground, absorbing surge energy via common-anode configuration. Use Value: Limits rail voltage to ≤52 V during 100 µs surges, preventing damage to downstream 48 V tolerant CAN transceivers and microcontrollers. |
Use Scenario: Stabilizing excitation voltage for 4–20 mA current-loop pressure sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Precision Zener reference source providing 47 V bias to op-amp-based current driver circuitry. Use Value: Maintains <±0.5 % output stability over −40 °C to +85 °C due to low temperature coefficient (32.9 mV/K) and tight VZ tolerance. |
| USB-C Port Overvoltage Clamp | Medical Instrument Reference Divider |
Use Scenario: Bidirectional overvoltage protection on USB-C CC lines exposed to accidental 24 V adapter misconnection. IC Role / Device Role / Timing Role: Common-anode dual Zener configured as back-to-back clamp between CC and ground. Use Value: Activates at ±47 V, limiting CC line excursion to safe levels (<±50 V) within 10 ns-preserving USB PD controller integrity. |
Use Scenario: Generating stable mid-rail reference for isolated ADC front-end in portable ECG monitors. IC Role / Device Role / Timing Role: Low-leakage Zener (≤0.05 µA) supplying bias to resistive divider network feeding instrumentation amplifier. Use Value: Enables <1 µV drift over 1000-hour operation due to negligible IR-induced error and AEC-Q101 process consistency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZB84-C47,215 | ±5 % VZ tolerance (vs. ±2 %); identical package, power rating, and surge capability | Acceptable where cost sensitivity outweighs precision-e.g., non-safety-critical consumer power supplies | Select when tighter VZ spec is unnecessary and BOM cost reduction is prioritized |
| MMBZ5270BS-7-F | Single Zener (47 V, ±5 %), SOT363 package, 200 mW Ptot, no AEC-Q101 qualification | Limited to non-automotive use; lacks dual-diode symmetry and automotive reliability validation | Choose only for space-constrained non-automotive designs where dual functionality is not required |
Compared with BZB84-C47,215, the BZB84-B47,215 offers superior voltage accuracy for closed-loop regulation; versus MMBZ5270BS-7-F, it provides dual-diode integration and automotive qualification-making it the sole option for AEC-compliant bidirectional clamping.
Availability
BZB84-B47,215 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, USB-C protection, and medical instrument reference circuits requiring stable component supply and long-term lifecycle assurance.
Supply support for BZB84-B47,215 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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BZB84 series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh automotive and industrial environments.
FAQ
What is the maximum allowable junction temperature for BZB84-B47,215?
The absolute maximum junction temperature is 150 °C, as defined in the Limiting Values table. Operation above this temperature risks permanent parametric shift or catastrophic failure. Derating begins at Tamb > 25 °C per the thermal resistance curve (Rth(j-a) = 417 K/W), requiring careful PCB copper area allocation for heatsinking in high-temperature enclosures.
How does the dual common-anode configuration affect circuit layout?
The shared anode (Pin 3) must connect directly to the system reference plane-typically ground or a stable bias rail-while Cathodes 1 and 2 route independently to protected nodes. This eliminates need for external anode tie traces, reducing parasitic inductance and improving high-frequency surge response. Layout best practice is symmetric trace routing from each cathode to its respective clamp point.
Is BZB84-B47,215 suitable for bidirectional TVS applications?
No-it is a Zener diode, not a TVS. While it clamps in reverse bias (Zener mode) and conducts forward at ~0.9 V, its 40 W surge rating applies only to unidirectional 100 µs pulses per diode, not the bidirectional 8/20 µs waveforms defined in IEC 61000-4-5. For true bidirectional TVS duty, dedicated avalanche-rated devices like PESD5V0S1BA should be used.
What marking code identifies BZB84-B47,215 on the device body?
The top-side marking is "RD*", where "RD" denotes the BZB84-B47 type and "*" indicates manufacturing location (e.g., "−" = Hong Kong, "p" = Hong Kong, "t" = Malaysia, "W" = China). This matches Table 4 in the Nexperia datasheet and is laser-etched on the SOT23 package for traceability.
BZB84-B47,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- 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):
- 47 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZB84-B47,215 FAQ
1.How can I place an order for BZB84-B47,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B47,215 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-B47,215 reliable?
The price and inventory of BZB84-B47,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-B47,215 is usually 5 days.
3.What payment methods are accepted for BZB84-B47,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B47,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B47,215?
BZB84-B47,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B47,215 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-B47,215?
For technical support, including BZB84-B47,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B47,215 requirements.
6.How does Aetrix verify that BZB84-B47,215 is sourced from the original manufacturer or authorized distributors?
All BZB84-B47,215 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-B47,215 meets industry standards.
7.What is the process for return or replacement of BZB84-B47,215?
All BZB84-B47,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B47,215, 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-B47,215 part is unused and in its original packaging.
Return procedure for BZB84-B47,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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