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Diodes Incorporated 1N5233B-T
- Part No.:
- 1N5233B-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5233B-T.pdf
- Description:
- DIODE ZENER 6V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:4,728
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Product details
Overview
1N5233B-T from Diodes Incorporated is a 6.0 V, ±5% tolerance, 500 mW glass-encapsulated Zener diode in DO-35 package, designed for precision voltage regulation and reference in low-power analog circuits, power supply feedback loops, and overvoltage protection. It delivers 7.0 Ω dynamic impedance at 20 mA test current, operates from –65°C to +175°C, and features hermetic glass sealing with Sn96.5Ag3.5 solderable terminals.
For engineers reviewing the 1N5233B-T datasheet, 1N5233B-T pinout, 1N5233B-T application, or 1N5233B-T equivalent, key selection criteria include Zener voltage accuracy (5.70–6.30 V), thermal stability (±0.038 %/°C TC), low leakage (<5 µA @ 4.8 V), DO-35 mechanical compatibility, and RoHS-compliant lead-free finish.
Technical Context
This discrete Zener diode functions as a two-terminal voltage reference by operating in reverse breakdown with controlled avalanche characteristics. Its 6.0 V nominal Zener voltage is stabilized via epitaxial silicon construction and calibrated during DC testing at thermal equilibrium with 9.5 mm lead length.
The device exhibits a positive temperature coefficient of +0.038 %/°C above 5.6 V, enabling predictable drift compensation in temperature-sensitive references. Its 300 °C/W junction-to-ambient thermal resistance requires derating above 75°C ambient unless heatsinking is applied per MIL-STD-202 guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 6.0 V nominal, 5.70–6.30 V range at 20 mA - defines stable regulation point for feedback or clamping |
| Power Dissipation | 500 mW - supports continuous operation in low-current bias networks without forced cooling |
| Zener Impedance | 7.0 Ω at IZT = 20 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage | <5.0 µA at VR = 4.8 V - guarantees low quiescent current in high-impedance reference paths |
| Temp Coefficient | +0.038 %/°C - enables predictable voltage drift for compensated reference designs |
| Operating Temp | –65°C to +175°C - suitable for automotive under-hood and industrial control environments |
| Package | DO-35 glass case - provides hermetic sealing and compatibility with legacy through-hole reflow profiles |
Pinout & Package
DO-35 glass axial package with cathode band marking; leads are Sn96.5Ag3.5 solderable per MIL-STD-202 Method 208. Polarity is unambiguous: banded end is cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulator configuration |
| Cathode | Reverse-biased Zener terminal / regulated output node | Connected to input voltage source and load; maintains stable 6.0 V relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass Encapsulation | Prevents moisture ingress and long-term parameter drift in humid or harsh environments |
| ±5% Zener Tolerance | Enables use in cost-sensitive applications where tight voltage matching is not required |
| RoHS-Compliant Finish | Sn96.5Ag3.5 termination meets EU Directive 2015/863/EU without exemptions for lead content |
| High Thermal Stability | –65°C to +175°C operating range supports engine control units and industrial PLCs |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-derived auxiliary supplies. IC Role / Device Role / Timing Role: Shunt reference providing precise 6.0 V feedback to optocoupler or TL431 control loop. Use Value: Maintains ±1% output regulation across line/load variations due to low 7.0 Ω Zz and stable TC. | Use Scenario: Protecting microcontroller I/O pins from transient surges on 5 V logic rails. IC Role / Device Role / Timing Role: Reverse-biased clamp limiting voltage to 6.3 V max during ESD or inductive kick events. Use Value: Limits peak stress to safe levels while drawing <5 µA standby current to avoid loading the rail. |
| Voltage Reference | Current Source Bias |
Use Scenario: Setting bias points in analog sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Providing stable 6.0 V reference for op-amp offset trimming or ADC reference scaling. Use Value: Delivers <10 ppm/°C effective drift over –40°C to +85°C when used with series resistor compensation. | Use Scenario: Generating constant current for LED bias or transistor base drive. IC Role / Device Role / Timing Role: Acting as voltage-controlled current sink in conjunction with emitter resistor. Use Value: Enables 1% current accuracy with 500 mW dissipation margin at 20 mA Zener current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5233B | SMD SOD-123 package; same 6.0 V, ±5%, 500 mW rating; 10 Ω Zz at 20 mA | Requires PCB redesign for surface-mount assembly; higher Zz reduces regulation precision | Select for space-constrained boards where DO-35 footprint is unavailable |
| 1N4735A | DO-41 package; 6.2 V nominal; 1.0 W power rating; 5.0 Ω Zz at 41 mA | Higher power handling but larger footprint and different voltage; not drop-in compatible | Select when 6.2 V is acceptable and higher surge capability is needed |
Compared with MMSZ5233B and 1N4735A, the 1N5233B-T offers optimal balance of legacy DO-35 compatibility, 6.0 V accuracy, and low-impedance regulation-making it preferred for repair, legacy replacement, and low-power through-hole designs where thermal budget is constrained to 500 mW.
Availability
1N5233B-T is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamping, and voltage reference applications requiring stable component supply and long-term obsolescence management.
Supply support for 1N5233B-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The 1N52xxB series belongs to Diodes' legacy Zener diode product line, engineered specifically for general-purpose voltage regulation and reference in cost-sensitive, high-reliability through-hole applications.
FAQ
What is the maximum reverse voltage the 1N5233B-T can withstand before breakdown?
The 1N5233B-T is rated for a nominal Zener voltage of 6.0 V with a tolerance of ±5%, meaning breakdown occurs between 5.70 V and 6.30 V at 20 mA test current. It is not specified for sustained operation above 6.30 V in reverse bias without exceeding power limits or risking parametric shift.
Can the 1N5233B-T be used in surface-mount assemblies?
No - the 1N5233B-T uses a DO-35 glass axial package with radial leads intended for through-hole mounting. For surface-mount equivalents, consider the MMSZ5233B in SOD-123 package, which shares identical electrical specs but requires PCB layout changes.
Is the 1N5233B-T still in active production?
No - Diodes Incorporated has marked the 1N5233B-T as obsolete and recommends migration to the MMSZ5233B for new designs. However, Aetrix Electronics maintains limited legacy stock and supports continuity for repair and maintenance programs.
How does the +0.038 %/°C temperature coefficient affect circuit performance?
The positive temperature coefficient means the Zener voltage increases by approximately 2.28 mV/°C across its 6.0 V nominal value. In precision references, this drift must be compensated using series resistors or matched TC components to achieve sub-100 ppm/°C stability over temperature.
1N5233B-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N5233B-T FAQ
1.How can I place an order for 1N5233B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5233B-T 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 1N5233B-T reliable?
The price and inventory of 1N5233B-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5233B-T is usually 5 days.
3.What payment methods are accepted for 1N5233B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5233B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5233B-T?
1N5233B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5233B-T 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 1N5233B-T?
For technical support, including 1N5233B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5233B-T requirements.
6.How does Aetrix verify that 1N5233B-T is sourced from the original manufacturer or authorized distributors?
All 1N5233B-T 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 1N5233B-T meets industry standards.
7.What is the process for return or replacement of 1N5233B-T?
All 1N5233B-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N5233B-T, 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 1N5233B-T part is unused and in its original packaging.
Return procedure for 1N5233B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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