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Nexperia USA Inc. BZV49-C75,115
- Part No.:
- BZV49-C75,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-243AA
- Datasheet:
-
BZV49-C75,115.pdf
- Description:
- DIODE ZENER 75V 1W SOT89
- Quantity:
- Payment:
- Shipping:
Inventory:2,585
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Product details
Overview
BZV49-C75,115 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 75 V at 2 mA test current, with ±5% tolerance, 95 Ω typical differential resistance, and −0.2 mV/K temperature coefficient. Used in overvoltage protection circuits for industrial power converters.
For engineers reviewing the BZV49-C75,115 datasheet, BZV49-C75,115 pinout, BZV49-C75,115 application, or BZV49-C75,115 equivalent, key selection criteria include reverse voltage stability under thermal drift, non-repetitive surge capability (52.5 A peak), junction-to-tie-point thermal resistance (15 K/W), and SOT89 package heat dissipation performance in compact PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled VZ = 70–79 V range at IZtest = 2 mA, exhibiting low dynamic impedance (95 Ω max) to maintain regulation under load transients. Its negative temperature coefficient (−0.2 mV/K typ.) enables predictable drift compensation in multi-diode reference strings.
The device supports pulsed operation up to 40 W non-repetitive peak reverse power (tp = 100 μs), enabled by robust thermal design: Rth(j-tp) = 15 K/W and Rth(j-a) = 125 K/W (on 2.5 cm² ceramic substrate). Junction temperature is rated to 150 °C, supporting operation in high-ambient industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 75 V - precise DC reference voltage at 2 mA test current |
| VZ range | 70–79 V - guaranteed regulation window under ±5% tolerance |
| rdif | 95 Ω max - low dynamic impedance ensures stable output under current variation |
| SZ | −0.2 mV/K typ. - predictable negative temperature drift for thermal compensation |
| Ptot | 1 W - continuous power handling on standard ceramic substrate |
| IZSM | 52.5 A - non-repetitive surge current capability (100 μs square wave) |
| Cd | 35 pF at 1 MHz / 0 V - minimal capacitive loading in high-frequency regulation paths |
Pinout & Package
Package: SOT89 (SC-62), plastic surface-mounted package with exposed collector pad for enhanced thermal conduction. Dimensions per JEDEC TO-243: 4.6 × 2.6 × 1.6 mm, 3-lead configuration optimized for power dissipation in space-constrained designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Primary anode connection; tied to cathode via internal Zener junction when reverse-biased |
| 2 | Cathode | Main cathode terminal; connected to regulated output node in shunt configuration |
| 3 | Anode | Second anode terminal - electrically identical to Pin 1; provides redundant mechanical anchoring and improved thermal path to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| E24 voltage grading | One of 37 standardized Zener voltages (2.4–75 V) enabling exact reference matching without trimming |
| Thermal tie-point pad | Exposed leadframe pad (Pin 3) reduces Rth(j-tp) to 15 K/W for reliable 1 W operation |
| Low leakage at VR | ≤0.05 μA at 57 V - ensures minimal quiescent current in battery-backed systems |
| Pulse survivability | Withstands 40 W non-repetitive surges (100 μs) - protects downstream circuitry during transient events |
Applications
| Industrial Power Supply Regulation | Overvoltage Clamp for Motor Drives |
|---|---|
Use Scenario: Stabilizing feedback reference in isolated 48–100 V DC-DC converters for PLC I/O modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 75 V threshold for error amplifier input. Use Value: Maintains ±1.5% output accuracy across −40 to +105 °C ambient due to predictable −0.2 mV/K drift. | Use Scenario: Clamping regenerative energy spikes on 72 V DC bus in brushed DC motor controllers. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 52.5 A surge pulses without degradation. Use Value: Limits bus voltage to ≤79 V during 100 μs inductive kick, preventing MOSFET avalanche failure. |
| Programmable Logic Controller Input Protection | Test Equipment Reference Source |
Use Scenario: Protecting 24/48/75 V digital input channels against ESD and field-wiring faults. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage front-end protection network. Use Value: Delivers <0.05 μA leakage at 57 V, preserving high-impedance sensing integrity. | Use Scenario: Generating stable 75 V reference for calibration of multimeter high-voltage ranges. IC Role / Device Role / Timing Role: Precision shunt reference with traceable ±5% tolerance and low rdif. Use Value: Enables <±0.3% absolute voltage accuracy after factory trim, supported by E24 binning. |
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-C75 | Same VZ (75 V), but SOT23 package; lower Ptot = 300 mW; rdif = 120 Ω max | Limited to low-power signal-level references; unsuitable for >100 mA regulation or surge clamping | Select when board space is critical and thermal load is <300 mW. |
| 1N4744A | Through-hole DO-41; VZ = 14 V (not 75 V); incompatible voltage grade | Not functionally equivalent - different nominal Zener voltage and package form factor | Not recommended as direct alternative; requires redesign of reference network. |
Compared with BZX84-C75 and 1N4744A, the BZV49-C75,115 uniquely combines 75 V regulation, 1 W continuous dissipation, SOT89 thermal performance, and E24 binning - making it the only suitable choice for industrial-grade 75 V shunt references requiring surge resilience and long-term stability.
Availability
BZV49-C75,115 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive protection circuits, and programmable logic controller input conditioning requiring stable component supply and long-lifecycle support.
Supply support for BZV49-C75,115 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, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.
The BZV49 series belongs to Nexperia's voltage regulator diode product line, engineered for high-reliability DC voltage reference and overvoltage protection in space- and thermally-constrained industrial power systems.
FAQ
What is the maximum continuous reverse power this diode can handle?
The BZV49-C75,115 has a total power dissipation rating of 1 W at Tamb = 25 °C on a 2.5 cm² ceramic substrate. Derating is required above 25 °C ambient, following the Rth(j-a) = 125 K/W thermal resistance curve. At 70 °C ambient, maximum continuous power drops to approximately 0.6 W.
Does this Zener diode have a specified forward voltage?
Yes - the forward voltage VF is specified as ≤1 V at IF = 50 mA. This value is relevant for polarity-check circuits or dual-use configurations where the device may conduct forward during fault conditions, ensuring predictable clamping behavior.
Can BZV49-C75,115 be used in parallel for higher current handling?
No - Zener diodes must not be paralleled without individual ballasting resistors due to VZ tolerance (±5%) and mismatched temperature coefficients. Even with matched units, thermal runaway risk remains high. For higher current, use a single higher-power device or active regulation.
What is the meaning of the "75Y" marking code on the device body?
The marking code "75Y" identifies the BZV49-C75 variant per Nexperia's standard coding: "75" denotes the nominal Zener voltage (75 V), and "Y" indicates the ±5% tolerance grade within the E24 series. This matches the official ordering table in the datasheet.
BZV49-C75,115 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):
- 75 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 255 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 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-C75,115 FAQ
1.How can I place an order for BZV49-C75,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV49-C75,115 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-C75,115 reliable?
The price and inventory of BZV49-C75,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV49-C75,115 is usually 5 days.
3.What payment methods are accepted for BZV49-C75,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV49-C75,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV49-C75,115?
BZV49-C75,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV49-C75,115 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-C75,115?
For technical support, including BZV49-C75,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV49-C75,115 requirements.
6.How does Aetrix verify that BZV49-C75,115 is sourced from the original manufacturer or authorized distributors?
All BZV49-C75,115 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-C75,115 meets industry standards.
7.What is the process for return or replacement of BZV49-C75,115?
All BZV49-C75,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV49-C75,115, 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-C75,115 part is unused and in its original packaging.
Return procedure for BZV49-C75,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZV49-C75,115 Tags
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