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Nexperia USA Inc. BZV49-C12,115
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- Part No.:
- BZV49-C12,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-243AA
- Datasheet:
-
BZV49-C12,115.pdf
- Description:
- DIODE ZENER 12V 1W SOT89
- Quantity:
- Payment:
- Shipping:
Inventory:1,290
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Product details
Overview
BZV49-C12,115 from Nexperia is a medium-power Zener voltage regulator diode in SOT89 package, designed for precision DC voltage reference and stabilization in power supply rails. It delivers a nominal working voltage of 12 V (min 11.4 V, max 12.7 V) at 5 mA test current, with differential resistance ≤25 Ω, ±5% tolerance, and 1 W total power dissipation - used in industrial power management and analog signal conditioning circuits.
For engineers reviewing the BZV49-C12,115 datasheet, BZV49-C12,115 pinout, BZV49-C12,115 application, or BZV49-C12,115 equivalent, key selection considerations include its 12 V regulation accuracy, low temperature coefficient (+6.0 to +10.0 mV/K), SOT89 thermal performance (Rth(j-tp) = 15 K/W), and non-repetitive surge capability (40 W, 100 μs).
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable output voltage under varying load and input conditions. Its design centers on tight voltage tolerance (±5%), low dynamic impedance (≤25 Ω at IZtest = 5 mA), and controlled temperature coefficient (typ. +8.4 mV/K), enabling predictable regulation across industrial temperature ranges (−65 °C to +150 °C).
The SOT89 package integrates an exposed collector pad for enhanced thermal conduction, supporting continuous 1 W dissipation when mounted on a 2.5 cm² ceramic substrate. Reverse leakage remains ≤0.1 μA at 9.4 V, ensuring minimal quiescent current in standby-sensitive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 11.4 V to 12.7 V at 5 mA - defines regulated output range for 12 V rail stabilization |
| Differential Resistance (rdif) | ≤25 Ω - ensures minimal output voltage shift under load current variation |
| Power Dissipation (Ptot) | 1 W at Tamb = 25 °C - sets maximum continuous thermal budget on standard PCB layout |
| Temp. Coefficient (SZ) | +6.0 to +10.0 mV/K - quantifies voltage drift per degree Celsius rise in junction temperature |
| Reverse Leakage (IR) | ≤0.1 μA at 9.4 V - guarantees negligible standby current in battery-backed systems |
| Non-repetitive Surge (PZSM) | 40 W for 100 μs - enables transient overvoltage clamping without failure |
| Junction Temperature (Tj) | 150 °C max - determines safe operating margin under sustained thermal stress |
Pinout & Package
SOT89 plastic surface-mounted package with exposed thermal pad (collector connection), optimized for heat transfer in space-constrained power regulation designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Forward-biased terminal; connects to lower-potential side of regulation node |
| 2 | Cathode | Reverse-biased terminal; connects to regulated output node (VOUT) |
| 3 | Anode | Second anode connection tied internally to Pin 1 - provides redundant mechanical/thermal anchoring |
Key Features
| Feature | Design Value |
|---|---|
| E24 Standard Voltage Range | 12 V nominal with ±5% tolerance - aligns with industry-standard resistor and capacitor series for consistent BOM planning |
| Low Dynamic Impedance | ≤25 Ω at 5 mA - maintains regulation accuracy under dynamic load steps typical in SMPS feedback paths |
| Thermally Optimized Package | Rth(j-tp) = 15 K/W - enables reliable 1 W operation without heatsink in compact industrial modules |
| Controlled Tempco | +8.4 mV/K typical - allows predictable compensation in temperature-critical sensor biasing networks |
Applications
| Industrial Power Supply Regulation | Automotive ECU Reference Voltage |
|---|---|
Use Scenario: Stabilizing 12 V auxiliary rail in programmable logic controller (PLC) power stage. IC Role / Device Role / Timing Role: Zener voltage reference providing precise bias for op-amp comparators and ADC references. Use Value: Maintains <±1% output stability over −40 °C to +85 °C ambient, reducing calibration frequency in field-deployed units. | Use Scenario: Generating stable 12 V reference for microcontroller reset circuitry in engine control units. IC Role / Device Role / Timing Role: Voltage clamp ensuring clean POR (power-on reset) threshold despite battery voltage sag during cranking. Use Value: Withstands 40 W transient surges (100 μs) from load-dump events, preventing false resets during automotive transients. |
| Consumer Audio Signal Conditioning | Medical Instrumentation Bias Network |
Use Scenario: Providing low-noise 12 V bias for analog front-end op-amps in portable ultrasound receivers. IC Role / Device Role / Timing Role: Low-leakage (≤0.1 μA) Zener reference minimizing offset drift in high-gain amplification stages. Use Value: Differential resistance ≤25 Ω suppresses ripple-induced modulation in audio band, preserving SNR >95 dB. | Use Scenario: Setting accurate 12 V reference for isolated sensor excitation in patient-monitoring ECG front-ends. IC Role / Device Role / Timing Role: Precision voltage source for bridge sensor excitation, requiring long-term stability and low tempco. Use Value: +8.4 mV/K tempco enables first-order compensation in firmware, meeting IEC 60601-1 accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12 | Same 12 V rating but SOT23 package; Ptot = 350 mW; rdif = 30 Ω | Limited to low-power signal-level regulation; unsuitable for 1 W continuous use | Select when board space is critical and thermal load <350 mW |
| MMSZ4685 | 12 V Zener in SOD-123; Ptot = 500 mW; rdif = 35 Ω; Tj = 150 °C | Lower power handling and higher impedance reduce regulation fidelity under load variation | Choose for cost-sensitive consumer applications where 500 mW suffices |
Compared with BZX84-C12 and MMSZ4685, the BZV49-C12,115 uniquely supports 1 W continuous dissipation in SOT89 with ≤25 Ω impedance - making it the only option among the three viable for industrial 12 V rail regulation with thermal margin and dynamic stability.
Availability
BZV49-C12,115 is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, and medical instrumentation requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZV49-C12,115 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 leader in discrete semiconductors, specializing in high-volume, high-reliability components for automotive, industrial, and computing markets.
The BZV49 series belongs to Nexperia's voltage regulator diode product line, engineered for robust DC voltage stabilization in thermally demanding environments with strict tolerance and surge resilience requirements.
FAQ
What is the maximum continuous reverse current the BZV49-C12,115 can sustain?
The device has no specified maximum continuous reverse current rating; instead, it is limited by power dissipation. At 12 V, continuous reverse current must be kept ≤83 mA to stay within the 1 W Ptot limit at 25 °C ambient. Derating applies above 25 °C per Rth(j-a) = 125 K/W.
Can BZV49-C12,115 replace older NXP BZX55-C12 in existing designs?
Yes - BZV49-C12,115 is a direct functional upgrade: same 12 V rating, tighter ±5% tolerance (vs. ±10% for BZX55), lower rdif (≤25 Ω vs. ≤35 Ω), and improved surge rating (40 W vs. 30 W). SOT89 footprint differs from BZX55's DO-35, requiring PCB revision.
How does the dual-anode configuration (Pins 1 and 3) affect circuit layout?
Pins 1 and 3 are internally shorted anodes; both must be connected to the same low-potential node. This configuration improves mechanical stability and thermal conduction via dual solder joints to the same copper pour - no separate routing is required or permitted.
Is the temperature coefficient linear across the operating current range?
No - the temperature coefficient varies nonlinearly with Zener current. Per Fig.5, SZ shifts from +6.0 mV/K at 1 mA to +10.0 mV/K at 20 mA. For precision applications, operation near IZtest = 5 mA is recommended to achieve the published +8.4 mV/K typical value.
BZV49-C12,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 50 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89
BZV49-C12,115 FAQ
1.How can I place an order for BZV49-C12,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV49-C12,115 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 BZV49-C12,115 reliable?
The price and inventory of BZV49-C12,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV49-C12,115 is usually 5 days.
3.What payment methods are accepted for BZV49-C12,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV49-C12,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV49-C12,115?
BZV49-C12,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV49-C12,115 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 BZV49-C12,115?
For technical support, including BZV49-C12,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV49-C12,115 requirements.
6.How does Aetrix verify that BZV49-C12,115 is sourced from the original manufacturer or authorized distributors?
All BZV49-C12,115 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 BZV49-C12,115 meets industry standards.
7.What is the process for return or replacement of BZV49-C12,115?
All BZV49-C12,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV49-C12,115, 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 BZV49-C12,115 part is unused and in its original packaging.
Return procedure for BZV49-C12,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZV49-C12,115 Tags
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