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Diodes Incorporated 1N5236B-T
- Part No.:
- 1N5236B-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5236B-T.pdf
- Description:
- DIODE ZENER 7.5V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:9,504
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Product details
Overview
1N5236B-T from Diodes Incorporated is a 7.5V ±5% tolerance, 500mW glass-encapsulated Zener diode in DO-35 package, designed for precision voltage regulation and reference applications in low-power analog circuits, power supply feedback loops, and overvoltage protection. It delivers 6.0Ω Zener impedance at 20mA test current, 3.0µA maximum reverse leakage at 6.0V, and exhibits +0.058%/°C temperature coefficient.
For engineers reviewing the 1N5236B-T datasheet, 1N5236B-T pinout, 1N5236B-T application, or 1N5236B-T equivalent, this page provides verified electrical parameters, DO-35 terminal configuration, thermal derating guidance, RoHS-compliant lead finish details, and direct replacement options including MMSZ5236B.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 7.5V output across load and line variations. Its 300°C/W junction-to-ambient thermal resistance requires lead temperature control ≤75°C (9.5mm lead length) to sustain full 500mW dissipation.
The device uses epitaxial construction for high stability and low noise, with cathode band polarity marking and Sn96.5Ag3.5 solderable terminals compliant with MIL-STD-202 Method 208. It is rated for -65°C to +175°C operating and storage temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5V nominal, 7.13–7.88V range at 20mA - defines regulated output voltage tolerance under standard test conditions |
| Power Dissipation (PD) | 500mW - maximum continuous DC power handling at TL ≤75°C with 9.5mm leads |
| Zener Impedance (ZZT) | 6.0Ω at IZT = 20mA - indicates voltage regulation stiffness against current variation |
| Reverse Leakage (IR) | 3.0µA max at VR = 6.0V - ensures minimal quiescent current in standby or sensing circuits |
| Temp. Coefficient (TC) | +0.058%/°C - quantifies VZ drift per degree Celsius rise above 25°C |
| Forward Voltage (VF) | 1.1V at IF = 200mA - relevant for forward-biased protection or clamping use cases |
Pinout & Package
Package: DO-35 glass axial package with hermetic seal, cathode band marking, and 0.13g mass. Dimensions: A ≤25.4mm, B ≤4.00mm, C ≤0.60mm, D ≤2.00mm (all mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias regulation; used as ground reference in shunt regulator topologies |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with band; connected to higher-potential side; supplies regulated 7.5V to load when reverse biased |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass package | Ensures long-term parameter stability and moisture resistance in harsh environments |
| ±5% VZ tolerance | Enables tight voltage reference accuracy without external trimming in cost-sensitive designs |
| Lead-free Sn96.5Ag3.5 finish | Meets RoHS 2/3 compliance while maintaining solderability per MIL-STD-202 Method 208 |
| Low ZZK = 500Ω @ 0.25mA | Supports stable regulation even at very low bias currents typical in battery-powered monitoring circuits |
Applications
| Voltage Reference for ADC/DAC | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Provides stable 7.5V reference for 12-bit SAR ADC input scaling in industrial data acquisition modules. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise full-scale input range. Use Value: Enables <±0.5 LSB integral nonlinearity by minimizing VREF drift over temperature and time. |
Use Scenario: Protects 3.3V microcontroller GPIO pins from transient surges on 5V sensor bus lines. IC Role / Device Role / Timing Role: Fast-acting clamp limiting voltage to 7.5V before damage threshold. Use Value: Absorbs >100mJ transients without degradation, preserving signal integrity during ESD events. |
| Feedback Element in Linear Regulator | Threshold Detector in Power Sequencing |
Use Scenario: Sets output voltage of adjustable LDO via resistor divider tied to 7.5V Zener node. IC Role / Device Role / Timing Role: Precision voltage setpoint generator for error amplifier reference. Use Value: Achieves ±1% output regulation across 0–85°C ambient due to matched TC with divider resistors. |
Use Scenario: Triggers power-good signal when 12V rail rises above 7.5V during system startup. IC Role / Device Role / Timing Role: Analog threshold comparator using Zener as stable trip point. Use Value: Delivers 10ms response time with <10mV hysteresis, ensuring deterministic sequencing order. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5236B | Surface-mount SOD-123 package; same 7.5V ±5%, 500mW rating; ZZT = 6.0Ω; 3.0µA IR; +0.058%/°C TC | Replaces axial DO-35 in automated PCB assembly; requires re-layout for footprint and thermal relief | Select for new designs requiring RoHS-compliant SMT placement and reduced board space |
| 1N4734A | DO-41 package; 5.6V nominal; 1W power rating; ZZT = 5.0Ω at 45mA; different VZ and PD | Not a direct voltage match; usable only where 5.6V reference suffices and higher power margin is needed | Choose only if redesign allows 5.6V reference and thermal management for 1W dissipation |
Compared with 1N5236B-T, MMSZ5236B offers identical electrical performance in SMT form factor, while 1N4734A provides higher power but mismatched voltage - making MMSZ5236B the preferred drop-in upgrade path for legacy DO-35 layouts transitioning to SMT.
Availability
1N5236B-T is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and linear regulator feedback applications requiring stable component supply despite its obsolete status.
Supply support for 1N5236B-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 functions in cost-sensitive, low-power analog systems.
FAQ
Is 1N5236B-T still in production?
No, 1N5236B-T is officially obsolete per Diodes Incorporated's DS18006 Rev. 19 (September 2019). It has been superseded by MMSZ5236B for new designs. Aetrix Electronics maintains limited legacy stock for repair and continuity programs, with full traceability and date-code verification.
What is the maximum allowable junction temperature?
The absolute maximum junction temperature is +175°C, consistent with the device's operating temperature range. However, sustained operation above 125°C requires derating based on RθJA = 300°C/W and strict control of lead temperature ≤75°C at 9.5mm from case to avoid exceeding 500mW power limit.
Can 1N5236B-T be used in place of 1N4734A?
No - 1N5236B-T is a 7.5V Zener, while 1N4734A is a 5.6V device with different power rating (1W vs. 500mW), package (DO-35 vs. DO-41), and Zener impedance. Substitution would cause incorrect regulation voltage and potential thermal overload in circuits designed for 5.6V reference.
Does this part meet automotive AEC-Q200 requirements?
No - 1N5236B-T is not qualified to AEC-Q200. It lacks the stress testing, failure analysis, and qualification documentation required for automotive applications. For automotive-grade Zener references, consider Diodes' AZ series or ON Semiconductor's 1SMA59xx series.
1N5236B-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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 6 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
1N5236B-T FAQ
1.How can I place an order for 1N5236B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5236B-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 1N5236B-T reliable?
The price and inventory of 1N5236B-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5236B-T is usually 5 days.
3.What payment methods are accepted for 1N5236B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5236B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5236B-T?
1N5236B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5236B-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 1N5236B-T?
For technical support, including 1N5236B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5236B-T requirements.
6.How does Aetrix verify that 1N5236B-T is sourced from the original manufacturer or authorized distributors?
All 1N5236B-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 1N5236B-T meets industry standards.
7.What is the process for return or replacement of 1N5236B-T?
All 1N5236B-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N5236B-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 1N5236B-T part is unused and in its original packaging.
Return procedure for 1N5236B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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