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Nexperia USA Inc. BZB84-B39,215
- Part No.:
- BZB84-B39,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B39,215.pdf
- Description:
- DIODE ZENER ARRAY 39V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,988
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Product details
Overview
BZB84-B39,215 from Nexperia is a dual common-anode Zener diode in SOT23 (TO-236AB) package, rated for 39 V nominal Zener voltage (±2 % tolerance), 300 mW total power dissipation, and 40 W non-repetitive peak reverse power. It serves precision voltage regulation and overvoltage protection in automotive power rails and industrial sensor interfaces.
For engineers reviewing the BZB84-B39,215 datasheet, BZB84-B39,215 pinout, BZB84-B39,215 application, or BZB84-B39,215 equivalent, this page delivers verified Zener voltage, differential resistance, thermal resistance, AEC-Q101 qualification status, and dual-diode terminal mapping - all confirmed from Nexperia's official 2009 product data sheet.
Technical Context
This dual Zener diode integrates two independent 39 V Zener elements sharing a common anode (Pin 3), enabling bidirectional clamping or complementary reference generation. Each diode supports 5 mA test current with 38.2–39.8 V working voltage range and 350 Ω typical differential resistance at IZ = 2 mA.
It operates across −55 °C to +150 °C ambient, features AEC-Q101 qualification for automotive use, and delivers 0.70 A non-repetitive peak reverse current under 100 µs square-wave surge conditions at Tj = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 38.2 V to 39.8 V at IZ = 2 mA - defines precise clamping threshold for 39 V rail protection |
| Differential Resistance (rdif) | 350 Ω max at IZ = 2 mA - determines voltage deviation under load current changes |
| 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 tp = 100 µs - enables transient surge suppression without device failure |
| Thermal Resistance (Rth(j-a)) | 417 K/W - quantifies junction-to-ambient temperature rise per watt in free air |
| Reverse Current (IR) | 0.05 µA max at VR = 30.4 V - ensures low leakage in high-impedance bias networks |
| Junction Temperature (Tj) | 150 °C max - defines upper thermal limit for reliable long-term operation |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount 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) | Connects to regulated node for first Zener path; reverse-biased during clamping |
| 2 | Cathode (Diode 2) | Enables second independent clamping path; allows bidirectional voltage limiting |
| 3 | Common Anode | Shared anode connection; ties both Zeners to ground or reference potential |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode configuration | Enables symmetrical bidirectional clamping or dual-rail referencing from single footprint |
| ±2 % Zener voltage tolerance (B-grade) | Ensures tight regulation accuracy without post-production trimming in safety-critical circuits |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress-test requirements |
| 300 mW total power rating | Supports continuous regulation in space-constrained SMT designs without heatsinking |
| 417 K/W junction-to-ambient thermal resistance | Allows thermal modeling on standard FR4 PCBs with single-sided copper |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Clamping transients on 36 V battery-supplied ECUs during load dump events. IC Role / Device Role / Timing Role: Dual-Zener acts as bidirectional overvoltage clamp referenced to chassis ground. Use Value: Withstands 40 W surge pulses and maintains 39 V clamping threshold within ±2 %, preventing downstream IC damage. |
Use Scenario: Providing stable 39 V reference for analog front-end amplifiers in 4–20 mA loop transmitters. IC Role / Device Role / Timing Role: Functions as precision shunt reference with low dynamic impedance (350 Ω). Use Value: Delivers <0.05 µA leakage at 30.4 V, minimizing error in high-impedance feedback networks. |
| Programmable Logic Controller (PLC) Input Protection | Telecom Line Interface Surge Suppression |
|
Use Scenario: Protecting 24 V digital input channels against ESD and inductive switching spikes. IC Role / Device Role / Timing Role: Common-anode dual Zener routes positive and negative transients to ground simultaneously. Use Value: Achieves fast response (<100 ns) and 0.7 A peak current handling without derating at 125 °C ambient. |
Use Scenario: Front-end surge protection for RS-485 transceivers operating on 3.3 V/5 V supplies with 39 V isolation margin. IC Role / Device Role / Timing Role: Provides low-capacitance (45 pF) clamping between data lines and ground. Use Value: Maintains signal integrity with <45 pF capacitance while meeting IEC 61000-4-5 Level 3 surge immunity. |
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 |
|---|---|---|---|
| MMBZ5240BS-7-F | Single Zener (12 V), SOT-363, ±5 % tolerance, 200 mW Ptot | Lacks dual configuration and AEC-Q101 qualification; lower power and voltage rating | Select only for non-automotive, single-rail 12 V clamping where footprint and cost outweigh performance needs |
| BZX84-C39 | Single Zener (39 V), SOT-23, ±5 % tolerance, 300 mW Ptot, no dual element | Provides same voltage but no bidirectional capability; not AEC-Q101 qualified | Use when only unidirectional clamping is required and automotive qualification is unnecessary |
Compared with BZB84-B39,215, MMBZ5240BS-7-F offers lower cost but sacrifices dual functionality and automotive reliability, while BZX84-C39 matches voltage and power but lacks common-anode architecture and AEC-Q101 validation - making BZB84-B39,215 uniquely suited for space-constrained, safety-compliant bidirectional regulation.
Availability
BZB84-B39,215 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, PLC input protection, and telecom line interface designs requiring stable component supply and AEC-Q101 compliance.
Supply support for BZB84-B39,215 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZB84 series targets automotive-grade voltage regulation and transient protection, designed specifically for robustness in harsh environments with AEC-Q101 qualification and extended temperature operation.
FAQ
What is the Zener voltage tolerance for BZB84-B39,215?
The "B" in BZB84-B39 denotes ±2 % Zener voltage tolerance. At 2 mA test current, the device delivers 38.2 V to 39.8 V, verified per Nexperia's 2009 datasheet Table 9. This tighter tolerance supports precision regulation where ±5 % parts would introduce unacceptable error margins.
Can BZB84-B39,215 replace a single Zener diode in a circuit?
Yes - either cathode (Pin 1 or Pin 2) can be used independently with the common anode (Pin 3) grounded, effectively functioning as a standard 39 V Zener. However, doing so leaves one diode unused and does not leverage its dual-clamp advantage in bidirectional protection schemes.
Is thermal derating required above 25 °C ambient?
Yes - total power dissipation must be linearly reduced above 25 °C using the 417 K/W junction-to-ambient thermal resistance. For example, at 85 °C ambient, maximum allowable Ptot drops to approximately 175 mW to maintain Tj ≤ 150 °C, per datasheet Section 7 and Table 6.
Does BZB84-B39,215 support reflow soldering?
Yes - it is qualified for standard lead-free reflow profiles per JEDEC J-STD-020. The SOT23 package uses tin-plated leads compatible with peak temperatures up to 260 °C, and Nexperia provides dedicated reflow footprints in Figure 8 of the datasheet for optimal thermal and mechanical reliability.
BZB84-B39,215 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):
- 39 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 130 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 27.3 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-B39,215 FAQ
1.How can I place an order for BZB84-B39,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B39,215 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-B39,215 reliable?
The price and inventory of BZB84-B39,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-B39,215 is usually 5 days.
3.What payment methods are accepted for BZB84-B39,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B39,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B39,215?
BZB84-B39,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B39,215 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-B39,215?
For technical support, including BZB84-B39,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B39,215 requirements.
6.How does Aetrix verify that BZB84-B39,215 is sourced from the original manufacturer or authorized distributors?
All BZB84-B39,215 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-B39,215 meets industry standards.
7.What is the process for return or replacement of BZB84-B39,215?
All BZB84-B39,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B39,215, 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-B39,215 part is unused and in its original packaging.
Return procedure for BZB84-B39,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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