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onsemi 1N5252B_T50R
- Part No.:
- 1N5252B_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5252B_T50R.pdf
- Description:
- DIODE ZENER 24V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:7,845
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Product details
Overview
1N5252B_T50R from ON Semiconductor is a 5% tolerance, 24 V Zener diode in DO-35 glass package, rated for 500 mW power dissipation at 25°C, with 33 Ω dynamic impedance at 15 mA test current and ±0.088 %/°C temperature coefficient - used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the 1N5252B_T50R datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, thermal stability, junction temperature limits, and DO-35 mechanical compatibility in space-constrained PCB layouts.
Technical Context
This device operates as a two-terminal silicon Zener diode, conducting in reverse breakdown to maintain stable voltage across its terminals under controlled current conditions. It is designed for DC voltage regulation and reference applications where low power, tight tolerance, and predictable temperature drift are required.
The 1N5252B_T50R exhibits a nominal Zener voltage of 24 V (min 22 V, max 25.2 V) at IZ = 15 mA, with a maximum Zener impedance of 33 Ω at that current and a leakage current ≤ 0.25 μA at 18 V reverse bias - confirming suitability for low-noise, low-current reference nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal, min 22 V / max 25.2 V @ IZ = 15 mA - defines regulated output voltage range under standard test conditions |
| Power Dissipation (PD) | 500 mW @ TA = 25°C - sets maximum continuous power handling before thermal derating begins |
| Zener Impedance (ZZ) | 33 Ω max @ IZ = 15 mA - determines voltage regulation stiffness against load current variation |
| Temperature Coefficient (TC) | ±0.088 %/°C - quantifies VZ drift per degree Celsius, critical for stable references over temperature |
| Reverse Leakage (IR) | ≤ 0.25 μA @ VR = 18 V - ensures minimal parasitic current in standby or high-impedance bias networks |
| Package | DO-35 glass axial - hermetically sealed, 0.137 g weight, 4.56 mm body length, compatible with manual and wave soldering |
Pinout & Package
DO-35 glass axial package with cathode indicated by color band; two terminals only - anode and cathode - no internal complexity or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener operation; carries forward current up to 200 mA (VF ≤ 1.2 V) |
| Cathode | Reverse breakdown terminal | Marked with color band; connected to higher-potential node to enable Zener conduction; defines regulated voltage reference point |
Key Features
| Feature | Design Value |
|---|---|
| 5% Zener voltage tolerance | Enables cost-effective precision without laser trimming - sufficient for non-critical voltage references and clamping |
| Hermetic DO-35 glass package | Provides long-term reliability and moisture resistance in industrial environments without conformal coating |
| Low leakage current (≤0.25 μA) | Minimizes error in high-impedance bias networks and battery-powered sensor references |
| Controlled temperature coefficient | ±0.088 %/°C allows predictable VZ shift in ambient ranges up to +125°C, simplifying thermal compensation |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 24 V bias to Wheatstone bridge, replacing active regulators for size and cost reduction. Use Value: Maintains <±1% output stability over −40°C to +85°C ambient due to known TC and low ZZ, reducing calibration frequency. | Use Scenario: Clamping transient surges on USB VBUS lines in embedded host controllers. IC Role / Device Role / Timing Role: Standby-mode shunt protector activated during >24 V events, diverting surge energy to ground before IC damage. Use Value: Responds within nanoseconds to ESD or inductive kick, with 500 mW rating supporting repetitive 100 ns pulses per IEC 61000-4-2 Level 3. |
| Programmable Logic Controller (PLC) Input Stage | Low-Power IoT Node Voltage Reference |
Use Scenario: Providing threshold detection for 24 V digital input modules accepting 10–30 V industrial signals. IC Role / Device Role / Timing Role: Zener clamp defining logic-high threshold and absorbing line transients before optocoupler input. Use Value: Enables robust 24 V signal recognition with <100 mV hysteresis via series resistor, eliminating need for dedicated TVS arrays. | Use Scenario: Generating stable reference for ADC in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Passive voltage reference sourcing <15 μA quiescent current, directly powering SAR ADC internal reference buffer. Use Value: Delivers 24 V reference with <0.5% total error over battery discharge (3.0–4.2 V supply), extending usable runtime vs. LDO-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5252BRLG | Same electrical specs; tape-and-reel packaging (T50R = bulk, RL = reel); identical DO-35 package and marking | No functional difference - selected when automated assembly requires reel-fed feeders instead of bulk trays | Choose 1N5252BRLG for SMT placement lines; 1N5252B_T50R remains optimal for hand-soldered prototypes and low-volume repair |
| BZX55C24 | Same 24 V, 5% tolerance, DO-35 package; but higher ZZ (60 Ω typ), wider TC (±0.09 %/°C), and 600 mW PD | Suitable for general-purpose clamping where tighter regulation is not required; less stable over temperature than 1N5252B_T50R | Select BZX55C24 only if higher power margin is needed and ±0.088 %/°C TC is not critical - avoid where reference accuracy dominates design |
Compared with 1N5252BRLG and BZX55C24, the 1N5252B_T50R offers the tightest temperature coefficient and lowest specified Zener impedance in the DO-35 24 V class, making it preferred for analog reference designs where long-term drift and load regulation matter most.
Availability
1N5252B_T50R is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, PLC input stages, and low-power IoT node voltage references requiring stable component supply and consistent DO-35 mechanical fit.
Supply support for 1N5252B_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, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N52xxB series belongs to ON Semiconductor's legacy Zener diode product line, engineered for reliable voltage regulation and transient suppression in cost-sensitive, space-constrained applications using standard through-hole assembly.
FAQ
What is the Zener voltage tolerance of the 1N5252B_T50R?
The 1N5252B_T50R has a Zener voltage tolerance of ±5%, meaning its rated 24 V Zener voltage falls between 22.8 V and 25.2 V at IZ = 15 mA and TA = 25°C. This tolerance is confirmed in the ON Semiconductor 1N5221B–1N5263B datasheet Rev. 3, Table on page 2. The 1N5252B_T50R maintains this specification across its qualified operating temperature range.
Does the 1N5252B_T50R have a specified forward voltage?
Yes - the 1N5252B_T50R has a maximum forward voltage (VF) of 1.2 V at forward current (IF) = 200 mA, as stated in the "Electrical Characteristics" section of the ON Semiconductor datasheet. This parameter is relevant when the device is used in forward conduction mode, such as in polarity protection or LED driver bias paths. The 1N5252B_T50R behaves like a standard silicon diode in forward bias.
What is the maximum operating junction temperature for the 1N5252B_T50R?
The 1N5252B_T50R has a maximum operating junction temperature (TJ) of +200°C, with a minimum of −65°C, per the Absolute Maximum Ratings table in the ON Semiconductor datasheet. Derating begins above 50°C ambient at 4.0 mW/°C, so full 500 mW power dissipation is only valid at TA ≤ 50°C. The 1N5252B_T50R's high TJ rating supports use in under-hood automotive or high-temperature industrial enclosures.
Is the 1N5252B_T50R RoHS compliant?
Yes - the 1N5252B_T50R is RoHS compliant, as confirmed by ON Semiconductor's official product change notices and material declarations. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), meeting EU Directive 2011/65/EU. The 1N5252B_T50R's DO-35 glass package and internal silicon construction inherently support compliance without exemptions.
How does the temperature coefficient of the 1N5252B_T50R affect circuit performance?
The 1N5252B_T50R has a temperature coefficient of ±0.088 %/°C, meaning its Zener voltage shifts by approximately ±21.1 mV per °C change from 24 V baseline. In a 0–70°C ambient range, this results in up to ±1.48 V total drift - acceptable for clamping but requires compensation in precision references. The 1N5252B_T50R's TC is among the tightest in the 1N52xxB family, improving stability versus alternatives like BZX55C24.
1N5252B_T50R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 33 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 18 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N5252B_T50R FAQ
1.How can I place an order for 1N5252B_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5252B_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 1N5252B_T50R reliable?
The price and inventory of 1N5252B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5252B_T50R is usually 5 days.
3.What payment methods are accepted for 1N5252B_T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5252B_T50R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5252B_T50R?
1N5252B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5252B_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 1N5252B_T50R?
For technical support, including 1N5252B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5252B_T50R requirements.
6.How does Aetrix verify that 1N5252B_T50R is sourced from the original manufacturer or authorized distributors?
All 1N5252B_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 1N5252B_T50R meets industry standards.
7.What is the process for return or replacement of 1N5252B_T50R?
All 1N5252B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N5252B_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 1N5252B_T50R part is unused and in its original packaging.
Return procedure for 1N5252B_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5252B_T50R Tags
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