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Nexperia USA Inc. BZV49-C9V1,115
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- Part No.:
- BZV49-C9V1,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-243AA
- Datasheet:
-
BZV49-C9V1,115.pdf
- Description:
- DIODE ZENER 9.1V 1W SOT89
- Quantity:
- Payment:
- Shipping:
Inventory:1,121
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Product details
Overview
BZV49-C9V1 from Nexperia is a medium-power Zener voltage regulator diode in SOT89 package, designed for precision DC voltage reference and regulation at nominal 9.1 V with ±5% tolerance, 6 Ω typical differential resistance, and 5.5 mV/K temperature coefficient at 5 mA test current. It delivers stable regulation in power supply feedback paths, overvoltage protection circuits, and analog reference nodes.
For engineers reviewing the BZV49-C9V1 datasheet, BZV49-C9V1 pinout, BZV49-C9V1 application, or BZV49-C9V1 equivalent, key selection criteria include Zener voltage accuracy at 5 mA, thermal resistance (15 K/W junction-to-tie-point), non-repetitive peak reverse power capability (40 W), and SOT89 thermal pad layout compatibility.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 8.5–9.6 V at 5 mA test current. Its low differential resistance (6–15 Ω) ensures minimal output voltage variation under load changes, while its positive temperature coefficient (+3.8 to +7.0 mV/K) supports predictable drift behavior across −65 °C to +150 °C operating range.
The device uses a silicon planar epitaxial construction optimized for stable regulation under continuous 1 W dissipation (at Tamb = 25 °C on ceramic substrate) and transient 40 W surges (100 μs square wave). The SOT89 package integrates an exposed collector pad for enhanced thermal conduction, critical for maintaining junction temperature below 150 °C in compact power designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 8.5–9.6 V at IZtest = 5 mA - defines regulated output level with ±5% tolerance for feedback loop stability |
| Differential Resistance rdif | 6–15 Ω at IZtest = 5 mA - determines output impedance and load regulation error |
| Temperature Coefficient SZ | +3.8 to +7.0 mV/K at IZtest = 5 mA - quantifies voltage drift per degree Celsius in thermal management planning |
| Total Power Dissipation Ptot | 1 W at Tamb = 25 °C on 2.5 cm² ceramic substrate - sets maximum continuous thermal budget |
| Non-repetitive Peak Power PZSM | 40 W for tp = 100 μs - enables surge suppression in transient overvoltage events |
| Junction-to-Tie-Point Rth(j-tp) | 15 K/W - defines thermal path efficiency from die to PCB copper pad |
| Reverse Current IR | ≤0.5 μA at VR = 7.0 V - ensures low leakage in high-impedance reference nodes |
Pinout & Package
SOT89 plastic surface-mounted package with exposed collector pad for thermal conduction; 3 leads, 2.5 cm² ceramic mounting area recommended.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node in reverse-biased configuration; forms cathode-anode voltage drop defining regulation point |
| 2 | Cathode | Connected to regulated output node; carries full Zener current during operation; tied to PCB thermal pad |
| 3 | Anode | Second anode terminal electrically connected to Pin 1; provides mechanical stability and dual thermal path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance (E24 range) | Enables direct replacement across 37 standard values without recalibration in cost-sensitive consumer power supplies |
| 1 W continuous power rating | Supports regulation in 5–12 V auxiliary rails without external heatsinking in space-constrained SMD layouts |
| Low 6 Ω typical differential resistance | Reduces output voltage deviation to <15 mV per 90 mA load step, improving ADC reference stability |
| SOT89 thermal pad design | Enables 15 K/W junction-to-tie-point thermal resistance, allowing >800 mW sustained dissipation on 1 oz copper |
| Non-repetitive 40 W surge rating | Withstands IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) without degradation when used with series current limiting |
Applications
| Power Supply Feedback Regulation | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating 9.1 V output in isolated flyback converter secondary-side feedback loop. IC Role / Device Role / Timing Role: Zener diode provides precise voltage reference to optocoupler LED drive circuit, closing control loop. Use Value: ±5% VZ tolerance and 6 Ω rdif ensure <±1.2% output voltage accuracy across line/load/temperature. | Use Scenario: Clamping 12 V rail against transients in automotive body control module. IC Role / Device Role / Timing Role: Shunts excess energy to ground during load dump events exceeding 13.2 V. Use Value: 40 W non-repetitive peak power rating absorbs 100 μs surges without parametric shift or failure. |
| Analog Reference Voltage Source | Microcontroller Reset Circuit |
Use Scenario: Generating stable 9.1 V reference for 12-bit SAR ADC in industrial sensor interface. IC Role / Device Role / Timing Role: Supplies bias voltage to ADC reference input, rejecting supply ripple via low rdif. Use Value: 6 Ω differential resistance limits reference error to <0.5 LSB under 1 mA load variation. | Use Scenario: Holding microcontroller reset pin low until 9.1 V rail stabilizes during power-up. IC Role / Device Role / Timing Role: Acts as threshold detector in RC-based reset timing network. Use Value: +5.5 mV/K temperature coefficient allows predictable release timing across −40 °C to +85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4702T1G | 500 mW rating, SOD-123 package, 9.1 V ±5%, rdif = 10 Ω | Limited to lower-power applications; no thermal pad; higher Rth(j-a) = 500 K/W | Select when board space is constrained and power dissipation remains <300 mW |
| BZX84-C9V1 | 350 mW rating, SOT-23 package, 9.1 V ±5%, rdif = 15 Ω | Not suitable for >200 mW continuous use; lacks thermal pad; Rth(j-tp) not specified | Choose only for signal-level clamping or ultra-low-cost consumer designs |
Compared with MMSZ4702T1G and BZX84-C9V1, BZV49-C9V1 offers 2.8× higher continuous power handling and 33× lower thermal resistance, making it the sole option for 1 W regulation in thermally demanding industrial power supplies.
Availability
BZV49-C9V1 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, sensor signal conditioning, and embedded system reset circuits requiring stable component supply and long-term lifecycle support.
Supply support for BZV49-C9V1 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, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, and consumer markets with high-volume, high-reliability components.
The BZV49 series belongs to Nexperia's voltage regulator diode product line, engineered for stable DC voltage reference and overvoltage protection in space-constrained, thermally demanding applications where SOT89 thermal performance is critical.
FAQ
What is the maximum continuous forward current for BZV49-C9V1?
The BZV49-C9V1 is a Zener diode intended for reverse-bias operation; its continuous forward current rating is 250 mA at 25 °C ambient. Forward conduction is not its functional mode-designs must ensure it operates in reverse breakdown for regulation. Exceeding 250 mA in forward bias risks thermal runaway and permanent damage.
How does the SOT89 package improve thermal performance over SOT-23?
The SOT89 package features an exposed collector pad that provides direct thermal conduction to the PCB copper, achieving 15 K/W junction-to-tie-point resistance-over 30× better than typical SOT-23 devices. This allows BZV49-C9V1 to sustain 1 W continuously where SOT-23 Zeners (e.g., BZX84-C9V1) are limited to 350 mW without derating.
Can BZV49-C9V1 be used in place of a 9.1 V TL431 shunt regulator?
No-BZV49-C9V1 is a passive two-terminal Zener diode with fixed 9.1 V breakdown, while TL431 is an active three-terminal programmable shunt regulator with adjustable output (2.5–36 V), lower dynamic impedance (~0.2 Ω), and built-in error amplifier. BZV49-C9V1 lacks feedback control and cannot replace TL431 in precision closed-loop regulation.
What is the reverse leakage current at 7.0 V for BZV49-C9V1?
At VR = 7.0 V and Tj = 25 °C, the reverse leakage current (IR) is guaranteed ≤0.5 μA. This low leakage preserves accuracy in high-impedance reference networks and minimizes quiescent current in battery-powered reset circuits.
BZV49-C9V1,115 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):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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-C9V1,115 FAQ
1.How can I place an order for BZV49-C9V1,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV49-C9V1,115 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-C9V1,115 reliable?
The price and inventory of BZV49-C9V1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV49-C9V1,115 is usually 5 days.
3.What payment methods are accepted for BZV49-C9V1,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV49-C9V1,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV49-C9V1,115?
BZV49-C9V1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV49-C9V1,115 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-C9V1,115?
For technical support, including BZV49-C9V1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV49-C9V1,115 requirements.
6.How does Aetrix verify that BZV49-C9V1,115 is sourced from the original manufacturer or authorized distributors?
All BZV49-C9V1,115 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-C9V1,115 meets industry standards.
7.What is the process for return or replacement of BZV49-C9V1,115?
All BZV49-C9V1,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV49-C9V1,115, 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-C9V1,115 part is unused and in its original packaging.
Return procedure for BZV49-C9V1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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