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onsemi MZP4750ARL
- Part No.:
- MZP4750ARL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
MZP4750ARL.pdf
- Description:
- DIODE ZENER 27V 3W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,640
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Product details
Overview
MZP4750ARL from onsemi is a 3 W axial-lead Zener diode with nominal Zener voltage of 27 V, ±5% tolerance, 9.5 Ω maximum Zener impedance at 35 mA test current, and 0.25 μA maximum reverse leakage at 20.6 V, used for precision voltage regulation in power supply feedback, overvoltage protection, and reference circuits.
For engineers reviewing the MZP4750ARL datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DO−41 package dimensions, thermal derating curves, surge capability (98 W @ 1 ms), and direct alternatives for stable voltage reference design.
Technical Context
The MZP4750ARL operates as a silicon-oxide passivated junction Zener regulator optimized for steady-state and transient voltage clamping. Its 3 W power rating at TL = 75°C with 24 mW/°C derating above that temperature enables robust operation in ambient temperatures up to +50°C at 1 W dissipation.
It features Class 3 ESD immunity (>16 kV HBM), 98 W non-repetitive surge capability per JEDEC standards, and guaranteed limits on six electrical parameters including VZ, ZZT, ZZK, IR, VR, and IF - all validated under controlled lead-temperature measurement conditions (TL = 30°C ±1°C, 3/8″ from body).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.65–28.35 V @ IZT = 35 mA; ensures stable regulation within ±5% tolerance across production lots |
| Zener Impedance (ZZT) | ≤9.5 Ω @ IZT = 35 mA; low dynamic resistance minimizes output voltage variation under load changes |
| Reverse Leakage (IR) | ≤0.25 μA @ VR = 20.6 V; guarantees minimal standby current in high-impedance reference paths |
| Surge Power Rating | 98 W @ 1 ms pulse; supports transient overvoltage suppression without degradation |
| ESD Rating | Class 3 (>16 kV) per Human Body Model; withstands handling and board-level ESD events |
| Package | DO−41 (Case 59), axial-lead plastic; industry-standard footprint compatible with manual and automated through-hole assembly |
| Operating Temperature | −65°C to +200°C junction range; suitable for automotive under-hood and industrial environments |
Pinout & Package
Package: DO−41 (Case 59), axial-lead, void-free thermosetting plastic with corrosion-resistant leads and cathode polarity band. Lead temperature limit: 230°C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode bias reference | Connected to lower-potential node; defines forward voltage drop (VF ≤ 1.5 V @ 200 mA) |
| Cathode | Zener breakdown terminal / regulation output node | Marked by band; carries regulated reverse current; must be held at higher potential than anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables stable long-term Zener voltage drift performance and enhanced reliability vs. non-passivated devices |
| Surmetic 30 construction | Provides superior surge endurance and thermal stability compared to standard DO−41 Zeners |
| Pb-free packaging option | Meets RoHS compliance requirements without sacrificing electrical or thermal performance |
| Guaranteed six-parameter limits | Reduces incoming inspection burden and improves BOM predictability in high-volume manufacturing |
Applications
| Switch-Mode Power Supply Feedback | Industrial Overvoltage Clamp |
|---|---|
Use Scenario: Used in optocoupler-coupled feedback loop of isolated DC/DC converters to regulate output voltage. IC Role / Device Role / Timing Role: Zener reference element setting precise error amplifier threshold; replaces TL431 in cost-sensitive designs where 27 V reference is required. Use Value: Tight ±5% VZ tolerance and low ZZT ensure <±1% output regulation accuracy across line/load/temperature. | Use Scenario: Placed across motor driver bus rails to clamp transients exceeding 27 V during inductive kickback. IC Role / Device Role / Timing Role: Passive overvoltage protection device absorbing energy during short-duration surges (e.g., 98 W @ 1 ms). Use Value: High surge rating prevents failure during repetitive switching events in 24 V industrial control systems. |
| Programmable Reference Source | Automotive Battery Monitor |
Use Scenario: Paired with resistor dividers to generate stable 27 V reference for ADC input scaling in programmable power supplies. IC Role / Device Role / Timing Role: Precision voltage reference node; leverages low IR (≤0.25 μA) to minimize divider current error. Use Value: Enables 16-bit ADC resolution retention by limiting reference error contribution to <0.001% full-scale. | Use Scenario: Monitoring 24 V battery rail in commercial vehicles; triggers warning when voltage exceeds 27 V during alternator overcharge. IC Role / Device Role / Timing Role: Analog comparator reference input; operates continuously across −40°C to +125°C ambient. Use Value: Extended TJ range (−65°C to +200°C) ensures functional integrity in under-hood environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A | Same 27 V nominal VZ, ±5%, but rated at 1 W; ZZT = 10 Ω @ 35 mA; no Class 3 ESD rating | Limited to low-power regulation; unsuitable for surge-prone or high-reliability industrial use | Select MZP4750ARL when 3 W dissipation, 98 W surge, or >16 kV ESD immunity is required |
| BZX85C27 | 27 V Zener, 1.3 W rating, ZZT = 15 Ω @ 35 mA; TO-204AA (DO-41) package; no published surge rating | Lower power and impedance performance; not qualified for extended temperature or high-surge environments | Choose MZP4750ARL for applications demanding guaranteed 3 W continuous operation and JEDEC-compliant surge capability |
Compared with 1N4750A and BZX85C27, the MZP4750ARL delivers triple the power rating, superior surge immunity, and tighter process control across six electrical parameters - making it the preferred choice for mission-critical voltage reference and clamping in industrial and automotive systems.
Availability
MZP4750ARL is available at Aetrix Electronics and suitable for switch-mode power supply feedback, industrial overvoltage clamp, and automotive battery monitor applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for MZP4750ARL 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MZP4750ARL belongs to the MZP47xxA Series of 3 W Surmetic 30 Zener regulators, engineered for high-reliability voltage reference and transient suppression in harsh environments where thermal stability and surge resilience are critical.
FAQ
What is the Zener voltage tolerance for MZP4750ARL?
The MZP4750ARL has a standard Zener voltage tolerance of ±5% around its nominal value of 27 V, yielding a guaranteed range of 25.65 V to 28.35 V at IZT = 35 mA and lead temperature TL = 30°C ±1°C. This tolerance is fully tested and guaranteed per onsemi's production screening, ensuring consistent performance across batches without additional binning.
Does MZP4750ARL support Pb-free assembly processes?
Yes, MZP4750ARL is available in Pb-free packaging compliant with RoHS Directive 2011/65/EU. The device uses lead-free solderable terminations and meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for standard reflow profiles. All electrical and thermal specifications apply identically to both standard and Pb-free versions of MZP4750ARL.
What is the maximum non-repetitive surge power rating for MZP4750ARL?
The MZP4750ARL is rated for 98 W non-repetitive surge power at 1 ms pulse width, per JEDEC standards for rectangular waveform pulses. This rating reflects actual device capability validated in Figure 3 of the official datasheet and is independent of steady-state thermal limits - enabling reliable transient suppression in motor drives and power converters.
How does the thermal derating of MZP4750ARL work above 75°C lead temperature?
MZP4750ARL derates linearly at 24 mW/°C above a lead temperature (TL) of 75°C, with maximum steady-state power dissipation dropping from 3 W at TL = 75°C to zero at TL = 187.5°C. Derating is based on measured junction-to-lead thermal resistance and applies regardless of ambient temperature, making lead temperature monitoring essential for high-reliability designs.
Is MZP4750ARL suitable for use as a voltage reference in precision analog circuits?
Yes, MZP4750ARL is suitable for precision analog reference applications due to its low reverse leakage (≤0.25 μA @ 20.6 V), tight ±5% VZ tolerance, and low ZZT (≤9.5 Ω). However, designers must account for its positive temperature coefficient (~+3.5 mV/°C near 27 V) and use thermal stabilization techniques - such as heat sinking or temperature-compensated biasing - to maintain reference accuracy.
MZP4750ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 3 W
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 20.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
MZP4750ARL FAQ
1.How can I place an order for MZP4750ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for MZP4750ARL 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 MZP4750ARL reliable?
The price and inventory of MZP4750ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MZP4750ARL is usually 5 days.
3.What payment methods are accepted for MZP4750ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MZP4750ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MZP4750ARL?
MZP4750ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MZP4750ARL 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 MZP4750ARL?
For technical support, including MZP4750ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MZP4750ARL requirements.
6.How does Aetrix verify that MZP4750ARL is sourced from the original manufacturer or authorized distributors?
All MZP4750ARL 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 MZP4750ARL meets industry standards.
7.What is the process for return or replacement of MZP4750ARL?
All MZP4750ARL units undergo pre-shipment inspection (PSI). If there is an issue with MZP4750ARL, 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 MZP4750ARL part is unused and in its original packaging.
Return procedure for MZP4750ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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