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onsemi 1N4752A_T50R
- Part No.:
- 1N4752A_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4752A_T50R.pdf
- Description:
- DIODE ZENER 33V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:6,074
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Product details
Overview
1N4752A_T50R from ON Semiconductor is a 33 V, 1.0 W axial-leaded Zener diode in DO-41 glass package, rated for ±5% tolerance, 7.5 Ω dynamic impedance at 33 mA test current, and operating from –65°C to +200°C. It provides stable voltage reference in power supply regulation and overvoltage protection circuits.
For engineers reviewing the 1N4752A_T50R datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage accuracy, thermal derating (6.67 mW/°C above 50°C), peak reverse surge capability (135 mA non-repetitive), leakage current ≤5 µA at 25.1 V, and DO-41 mechanical compatibility with through-hole PCB layouts.
Technical Context
This discrete Zener diode operates in reverse breakdown mode to maintain a stable 33 V reference across load variations. Its 1.0 W power rating is valid only at lead temperature ≤50°C with 3/8″ lead length, and it exhibits 7.5 Ω dynamic impedance (ZZ) at 33 mA test current (IZ), ensuring low voltage deviation under regulated current conditions.
The device supports high-temperature operation up to +200°C junction/storage temperature and features 5% voltage tolerance, 0.25 mA knee test current (IZK), and 135 mA non-repetitive peak reverse surge current (IZSM) per 8.3 ms square wave pulse-critical for transient suppression in DC power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V nominal, min 31.35 V / max 34.65 V at 33 mA - defines stable regulation point under specified bias |
| Power Dissipation (PD) | 1.0 W @ TL ≤ 50°C, 3/8″ leads - sets maximum continuous thermal load before derating |
| Zener Impedance (ZZ) | 7.5 Ω @ IZ = 33 mA - determines output voltage variation under load current changes |
| Leakage Current (IR) | ≤5 µA @ VR = 25.1 V - ensures minimal standby power loss below breakdown threshold |
| Operating Temperature | –65°C to +200°C - enables use in automotive under-hood, industrial, and aerospace environments |
| Surge Current (IZSM) | 135 mA (non-repetitive, 8.3 ms) - withstands short-duration transients without degradation |
| Tolerance | ±5% - specifies allowable initial voltage deviation for precision reference applications |
Pinout & Package
DO-41 glass axial package with cathode band marking; two-terminal device requiring no orientation-specific PCB footprint beyond standard through-hole diode layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reverse-biased reference input | Connected to lower-potential node in Zener configuration; carries full load current during regulation |
| Cathode | Reverse-biased output terminal / voltage reference node | Provides stable 33 V output relative to anode; marked by color band on DO-41 body |
Key Features
| Feature | Design Value |
|---|---|
| Stable Zener voltage reference | 33 V ±5% maintained at 33 mA, enabling predictable regulation in feedback loops |
| High surge current capability | 135 mA non-repetitive peak reverse current supports transient immunity in power rails |
| Wide temperature range | –65°C to +200°C operation allows deployment in extreme ambient conditions |
| Low dynamic impedance | 7.5 Ω at 33 mA minimizes output voltage shift under varying load currents |
| Standard DO-41 packaging | Axial glass case with cathode band ensures compatibility with legacy through-hole assembly processes |
Applications
| Power Supply Regulation | Overvoltage Protection |
|---|---|
Use Scenario: Regulating unregulated DC outputs in linear power supplies and LDO pre-regulators. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, clamping output to 33 V via series resistor. Use Value: Provides cost-effective, passive regulation where ±5% accuracy and 1 W dissipation meet system requirements. | Use Scenario: Protecting downstream ICs from voltage spikes on 24 V industrial control bus lines. IC Role / Device Role / Timing Role: Shunt clamp activated during overvoltage events exceeding 33 V threshold. Use Value: Absorbs 135 mA surge pulses (8.3 ms) without failure, preventing latch-up or damage to sensitive logic. |
| Voltage Reference for ADCs | Field Instrumentation Calibration |
Use Scenario: Supplying reference voltage to 12-bit analog-to-digital converters in data acquisition modules. IC Role / Device Role / Timing Role: Stable 33 V source scaled down via precision resistor divider to generate 2.5 V or 5 V reference. Use Value: ±5% tolerance and low ZZ enable sub-0.1% reference drift over temperature when combined with trimming. | Use Scenario: Calibrating 4–20 mA loop-powered sensors in oil & gas transmitter housings. IC Role / Device Role / Timing Role: Zener establishes known voltage node for sensor excitation and signal conditioning circuitry. Use Value: –65°C to +200°C rating supports operation inside high-temp process enclosures without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4752A | Same electrical specs, identical DO-41 package, no T50R suffix - standard tape-and-reel variant differs only in packaging format | No functional difference; T50R denotes 500-piece tape-and-reel packaging vs. bulk or ammo pack | Select 1N4752A_T50R for automated SMT-compatible through-hole placement; choose 1N4752A for manual or bulk assembly |
| BZX55C33 | 33 V, ±5%, DO-35 package, 500 mW rating - smaller size, lower power, higher ZZ (100 Ω typical) | Limited to lower-power references; unsuitable for >500 mW continuous dissipation or high-surge scenarios | Choose BZX55C33 only when board space is constrained and thermal load remains <0.5 W |
Compared with 1N4752A_T50R, the base 1N4752A offers identical performance in different packaging, while BZX55C33 trades power handling and surge robustness for compactness-making the T50R variant optimal for production-scale 1 W regulation with automated assembly support.
Availability
1N4752A_T50R is available at Aetrix Electronics and suitable for power supply regulation, overvoltage protection, and voltage reference applications requiring stable component supply, consistent DO-41 mechanical fit, and traceable ON Semiconductor sourcing.
Supply support for 1N4752A_T50R 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The 1N47xxA series was designed specifically for general-purpose Zener voltage regulation and reference applications, emphasizing reliability, wide temperature operation, and compatibility with standard through-hole manufacturing processes.
FAQ
What is the Zener voltage tolerance of the 1N4752A_T50R?
The 1N4752A_T50R has a Zener voltage tolerance of ±5%, meaning its nominal 33 V breakdown voltage falls between 31.35 V and 34.65 V when measured at 33 mA test current and 25°C. This tolerance is guaranteed across the full operating temperature range and applies to every unit shipped, supporting predictable design margins in voltage reference and regulation circuits using the 1N4752A_T50R.
Can the 1N4752A_T50R be used in surface-mount designs?
No-the 1N4752A_T50R uses a DO-41 axial glass package with 0.25 mm diameter leads intended for through-hole mounting. It is not compatible with standard SMT reflow or wave soldering processes. For surface-mount equivalents, consider SOD-123 or SOD-323 packaged Zeners like MMBZ5252B, but note these differ in power rating, impedance, and thermal behavior versus the 1N4752A_T50R.
What is the maximum non-repetitive peak reverse current for the 1N4752A_T50R?
The 1N4752A_T50R supports a non-repetitive peak reverse current (IZSM) of 135 mA per 8.3 ms square wave pulse, as defined in the ON Semiconductor datasheet. This rating reflects its ability to absorb transient energy without permanent degradation, making the 1N4752A_T50R suitable for basic overvoltage clamping in DC power distribution networks where surge duration and repetition rate are limited.
How does thermal derating affect the 1N4752A_T50R's power dissipation?
The 1N4752A_T50R is rated for 1.0 W only when lead temperature (TL) is ≤50°C with 3/8″ lead length; above that, power must be reduced by 6.67 mW per °C. At 100°C TL, maximum dissipation drops to 667 mW. Proper heatsinking or PCB copper area is required to maintain safe junction temperatures, especially in enclosed or high-ambient environments where the 1N4752A_T50R operates continuously near its thermal limit.
Is the 1N4752A_T50R RoHS compliant and halogen-free?
Yes-the 1N4752A_T50R meets RoHS Directive 2011/65/EU requirements and is manufactured as a halogen-free device per ON Semiconductor's product compliance documentation. The DO-41 glass package contains no lead in solderable terminations, and material declarations confirm absence of brominated flame retardants and chlorine-based compounds, satisfying environmental compliance for industrial and consumer electronics using the 1N4752A_T50R.
1N4752A_T50R 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):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 25.1 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
1N4752A_T50R FAQ
1.How can I place an order for 1N4752A_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4752A_T50R 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 1N4752A_T50R reliable?
The price and inventory of 1N4752A_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4752A_T50R is usually 5 days.
3.What payment methods are accepted for 1N4752A_T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4752A_T50R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4752A_T50R?
1N4752A_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4752A_T50R 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 1N4752A_T50R?
For technical support, including 1N4752A_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4752A_T50R requirements.
6.How does Aetrix verify that 1N4752A_T50R is sourced from the original manufacturer or authorized distributors?
All 1N4752A_T50R 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 1N4752A_T50R meets industry standards.
7.What is the process for return or replacement of 1N4752A_T50R?
All 1N4752A_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N4752A_T50R, 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 1N4752A_T50R part is unused and in its original packaging.
Return procedure for 1N4752A_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4752A_T50R Tags
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