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onsemi 1N5234B_T50R
- Part No.:
- 1N5234B_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5234B_T50R.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:3,878
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Product details
Overview
1N5234B_T50R from ON Semiconductor is a 6.2 V ±5% silicon Zener diode in DO-35 glass package, rated for 500 mW power dissipation at 25°C, with 7.0 Ω dynamic impedance at 20 mA test current and 5.0 μA maximum reverse leakage at 4.0 V. It serves as a precision voltage reference or shunt regulator in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.
For engineers reviewing the 1N5234B_T50R datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, cathode identification, DO-35 mechanical dimensions, and direct alternatives with validated voltage tolerance and impedance differences.
Technical Context
This device operates in reverse-biased Zener breakdown mode with a nominal regulation voltage of 6.2 V at IZ = 20 mA. Its temperature coefficient is +0.045 %/°C, indicating positive drift with rising junction temperature - critical for stability in unregulated environments.
The 1N5234B_T50R features a hermetically sealed DO-35 glass package with axial leads, cathode identified by a single color band, and a maximum forward voltage of 1.2 V at 200 mA. It is not intended for surge suppression or high-current clamping due to its 500 mW PD limit and lack of transient-rated specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal, 5.89–6.51 V range at IZ = 20 mA - defines stable regulation point for reference design |
| Power Dissipation (PD) | 500 mW at TA = 25°C, derates 4.0 mW/°C above 50°C - limits continuous thermal load in PCB layout |
| Dynamic Impedance (ZZ) | 7.0 Ω max at IZ = 20 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | 5.0 μA max at VR = 4.0 V - affects quiescent current in high-impedance bias networks |
| Temperature Coefficient | +0.045 %/°C - quantifies VZ drift per degree Celsius, essential for temperature-sensitive references |
| Forward Voltage (VF) | 1.2 V max at IF = 200 mA - relevant only for forward-conduction use cases like polarity protection |
Pinout & Package
DO-35 glass axial-leaded package: hermetically sealed, 0.137 g mass, cathode identified by single color band near one lead end. Dimensions per JEDEC DO-204AH: body length 4.56 mm, body diameter 1.91 mm, lead diameter 0.46 mm, overall length ≥25.40 mm (T50).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Zener breakdown return path | Connected to lower-potential node in shunt regulation; must sink full load current when regulating |
| Cathode | Zener breakdown voltage reference node | Marked with color band; connected to regulated voltage rail; defines VZ relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage regulation | 6.2 V ±5% tolerance at 20 mA enables stable reference without trimming in cost-sensitive designs |
| Low dynamic impedance | 7.0 Ω max ensures <14 mV output shift per 2 mA load change - suitable for analog sensor biasing |
| Controlled temperature coefficient | +0.045 %/°C allows predictable VZ drift compensation in industrial temperature ranges (−65°C to +200°C) |
| Hermetic DO-35 packaging | JEDEC-compliant glass seal provides long-term reliability in humid or corrosive ambient conditions |
Applications
| Power Supply Feedback | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Regulating output voltage in linear regulators or optocoupler-based SMPS feedback paths. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise error signal to control IC. Use Value: 6.2 V nominal value matches common TL431-based feedback thresholds; ±5% tolerance avoids overdesign. |
Use Scenario: Generating clean reset pulse during brown-out or startup in 5 V microcontroller systems. IC Role / Device Role / Timing Role: Zener-clamped threshold detector feeding RC delay network to reset pin. Use Value: Low 5.0 μA leakage at 4.0 V minimizes RC discharge error; DO-35 footprint fits compact reset modules. |
| Analog Sensor Biasing | Overvoltage Clamp Protection |
Use Scenario: Providing stable excitation voltage to resistive bridge sensors (e.g., strain gauges) in instrumentation. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference source for ratiometric measurement. Use Value: +0.045 %/°C TC enables <±0.3% VZ shift across −40°C to +85°C operating range. |
Use Scenario: Clamping transient spikes on low-voltage signal lines (e.g., RS-232, I²C bus) before IC inputs. IC Role / Device Role / Timing Role: Passive shunt clamp limiting voltage to 6.2 V during ESD or inductive kick events. Use Value: 500 mW rating supports short-duration transients up to ~80 ms at 125 mA peak current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | 6.2 V ±5%, 1.0 W rating, DO-41 package, 5.0 Ω ZZ at 31 mA | Higher power handling but larger footprint; requires different thermal layout | Select when >500 mW continuous dissipation or higher surge energy is needed |
| BZX55C6V2 | 6.2 V ±5%, 500 mW, DO-35, 10 Ω ZZ at 5 mA, −0.05 %/°C TC | Lower test current (5 mA), higher impedance, negative TC - less stable at elevated temperatures | Prefer where lower bias current suffices and negative TC aligns with system drift compensation |
Compared with 1N5234B_T50R, the 1N4735A offers higher power margin but demands more board space, while the BZX55C6V2 trades lower test current compatibility for inferior thermal stability - making the 1N5234B_T50R optimal for precision 20 mA-regulated references in compact DO-35 layouts.
Availability
1N5234B_T50R is available at Aetrix Electronics and suitable for power supply feedback, microcontroller reset circuits, analog sensor biasing, and overvoltage clamp protection requiring stable component supply and consistent DO-35 form factor.
Supply support for 1N5234B_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 (Semiconductor Components Industries, LLC) is a global supplier of energy-efficient semiconductor solutions, headquartered in Phoenix, Arizona, serving automotive, industrial, cloud power, and IoT markets.
The 1N52xxB series belongs to ON Semiconductor's legacy Zener diode product line designed for general-purpose voltage regulation and reference applications in cost-sensitive, low-power electronic systems.
FAQ
What is the Zener voltage tolerance of the 1N5234B_T50R?
The 1N5234B_T50R has a Zener voltage tolerance of ±5% at IZ = 20 mA, resulting in a guaranteed regulation range of 5.89 V to 6.51 V. This tolerance is specified per ON Semiconductor's 1N5221B–1N5263B Rev. 3 datasheet and applies strictly under thermal equilibrium conditions at 25°C ambient.
Does the 1N5234B_T50R have a specified maximum junction temperature?
Yes, the 1N5234B_T50R has an operating junction temperature range of −65°C to +200°C, as defined in the Absolute Maximum Ratings table. This wide range supports deployment in harsh environments, though practical operation is constrained by the 500 mW power limit and 4.0 mW/°C derating above 50°C ambient.
How is the cathode identified on the 1N5234B_T50R package?
The cathode of the 1N5234B_T50R is marked by a single color band located near one end of the DO-35 glass body. This band corresponds to the cathode terminal, which must be connected to the higher-potential node in Zener regulation configurations - consistent with JEDEC DO-204AH standard marking practice.
Can the 1N5234B_T50R be used in forward-biased applications?
Yes, the 1N5234B_T50R can conduct in forward bias with a maximum forward voltage of 1.2 V at 200 mA, per the datasheet. However, it is not optimized for rectification; its primary function is reverse-bias Zener regulation, and forward conduction should only be considered in dual-role circuits like polarity protection or logic-level clamping.
What is the storage temperature range for the 1N5234B_T50R?
The 1N5234B_T50R has a storage temperature range of −65°C to +200°C, matching its operating junction temperature limits. This specification ensures long-term reliability during non-operational storage, including reflow soldering pre-bake cycles and warehouse environments with extreme thermal exposure.
1N5234B_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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 4 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
1N5234B_T50R FAQ
1.How can I place an order for 1N5234B_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5234B_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 1N5234B_T50R reliable?
The price and inventory of 1N5234B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5234B_T50R is usually 5 days.
3.What payment methods are accepted for 1N5234B_T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5234B_T50R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5234B_T50R?
1N5234B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5234B_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 1N5234B_T50R?
For technical support, including 1N5234B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5234B_T50R requirements.
6.How does Aetrix verify that 1N5234B_T50R is sourced from the original manufacturer or authorized distributors?
All 1N5234B_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 1N5234B_T50R meets industry standards.
7.What is the process for return or replacement of 1N5234B_T50R?
All 1N5234B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N5234B_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 1N5234B_T50R part is unused and in its original packaging.
Return procedure for 1N5234B_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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