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Microchip Technology 1N5236A
- Part No.:
- 1N5236A
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5236A.pdf
- Description:
- DIODE ZENER 7.5V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,177
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Product details
Overview
1N5236A from Microsemi is a 7.5 V, ±10% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current and 6.0 Ω dynamic impedance at IZK, operating from –65°C to +175°C. It serves as a precision voltage reference or shunt regulator in low-power analog circuits, power supply feedback paths, and overvoltage protection.
For engineers reviewing the 1N5236A datasheet, 1N5236A pinout, 1N5236A application, or 1N5236A equivalent, key selection criteria include its 7.5 V nominal Zener voltage, ±10% tolerance (A suffix), 6.0 Ω Zener impedance at 0.25 mA, temperature coefficient of +0.058 %/°C, and DO-35 mechanical compatibility with axial-leaded PCB mounting.
Technical Context
This discrete Zener diode operates in reverse breakdown mode with cathode band indicating polarity. Its regulation is defined at IZT = 20 mA and characterized down to IZK = 0.25 mA, where ZZK = 6.0 Ω ensures stable knee behavior. The device exhibits minimal capacitance (<2.5 pF typical per Figure 2) and inherent radiation hardness per MicroNote 050.
Thermal performance is specified with junction-to-lead resistance of 250 °C/W at 3/8″ lead length and junction-to-ambient resistance of 310 °C/W on FR4 board. Forward voltage is ≤1.5 V at 200 mA, confirming robust conduction capability outside regulation mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 7.5 V @ 20 mA - defines stable regulation point for reference or clamping |
| Zener Tolerance | ±10% (A suffix) - sets absolute voltage window: 6.75 V to 8.25 V at 25°C |
| Zener Impedance | 6.0 Ω @ IZK = 0.25 mA - ensures sharp knee and low AC impedance near regulation threshold |
| Power Dissipation | 500 mW at 25°C - limits continuous DC power; derates linearly above 50°C lead temp |
| Operating Temperature | –65°C to +175°C - supports aerospace, industrial, and under-hood automotive environments |
| Temperature Coefficient | +0.058 %/°C - quantifies voltage drift with ambient change; positive slope above ~5 V |
| Reverse Leakage | 30 μA @ VR = 6.0 V - confirms low off-state current in clamping applications |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-lead package with tin-lead or RoHS-compliant matte-tin plating. Cathode identified by single black band; banded end must be held positive relative to anode for Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; forms return path during Zener conduction |
| Cathode (banded end) | Regulated output node | Supplies stable 7.5 V when reverse-biased; carries full load current in shunt configuration |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xx series | Ensures industry-standard electrical and mechanical interchangeability across manufacturers |
| RoHS-compliant option (e3 suffix) | Enables compliance with environmental directives without sacrificing performance or reliability |
| Radiation-hardened construction | Inherent hardness per MicroNote 050 supports use in space-grade and high-reliability systems |
| ESD-insensitive design | Immunity to MIL-STD-750 Method 1020 eliminates need for handling precautions in assembly |
| Low capacitance (<2.5 pF) | Minimizes signal coupling and phase shift in RF-adjacent or high-speed feedback paths |
Applications
| Overvoltage Clamp in Sensor Signal Conditioning | Low-Power Voltage Reference for ADC Biasing |
|---|---|
Use Scenario: Protects 3.3 V or 5 V analog sensor outputs from transient surges exceeding rail voltage. IC Role / Device Role / Timing Role: Shunt clamp placed between signal line and ground, conducting only during overvoltage events. Use Value: Limits excursion to ≤7.5 V + diode forward drop, preventing damage to downstream op-amps or ADC inputs. | Use Scenario: Provides stable 7.5 V reference for biasing precision instrumentation amplifiers or setting ADC reference thresholds. IC Role / Device Role / Timing Role: Passive voltage source in low-current divider networks or buffered reference chains. Use Value: Delivers ±10% accuracy and +0.058 %/°C drift-sufficient for 10-bit systems without active compensation. |
| Feedback Regulation in Linear Power Supplies | ESD Protection in Industrial I/O Interfaces |
Use Scenario: Sets output voltage in adjustable linear regulators (e.g., LM317-based designs) via resistive divider. IC Role / Device Role / Timing Role: Precision Zener element in the upper leg of the feedback divider network. Use Value: Enables accurate 7.5 V output with minimal load regulation error due to low 6.0 Ω dynamic impedance. | Use Scenario: Safeguards RS-485 transceivers or PLC digital inputs against electrostatic discharge events. IC Role / Device Role / Timing Role: Low-capacitance shunt protector placed between data line and ground. Use Value: Clamps fast transients with <2.5 pF loading, preserving signal integrity while surviving >15 kV HBM per MIL-STD-750. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A (ON Semiconductor) | Same 7.5 V nominal, ±5% tolerance (B suffix), 1.0 W power rating, DO-41 package | Higher power dissipation enables higher current regulation but requires larger PCB footprint | Select when >500 mW headroom or legacy DO-41 layout compatibility is required |
| BZX55-C7V5 (Vishay) | 7.5 V nominal, ±5% tolerance, 500 mW, DO-35 package, tighter 5% tolerance (C suffix) | Lower Zener impedance (5 Ω typical) and improved tempco consistency across batch | Select when tighter initial tolerance and lower dynamic impedance are prioritized over A-suffix cost advantage |
Compared with 1N5236A, the 1N4734A offers higher power margin in DO-41 form factor, while BZX55-C7V5 delivers tighter 5% tolerance and marginally lower impedance in identical DO-35 packaging-enabling direct substitution where tighter spec compliance is critical.
Availability
1N5236A is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and linear regulator feedback applications requiring stable component supply across aerospace, industrial control, and test equipment programs.
Supply support for 1N5236A 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and timing solutions for aerospace, defense, and industrial markets.
The 1N52xx series was designed specifically for general-purpose, low-power Zener regulation in harsh-environment applications where extended temperature range, ESD immunity, and long-term stability are essential.
FAQ
What is the nominal Zener voltage and tolerance of the 1N5236A?
The 1N5236A has a nominal Zener voltage of 7.5 V at 20 mA test current with a tolerance of ±10%, indicated by the "A" suffix. This means its actual breakdown voltage falls between 6.75 V and 8.25 V at 25°C under specified test conditions. The 1N5236A is not rated for tighter tolerances-those require C (±2%) or D (±1%) suffix variants.
What package type and polarity marking does the 1N5236A use?
The 1N5236A uses the DO-35 (DO-204AH) glass axial-lead package with a black cathode band marking the cathode terminal. The banded end must be held positive relative to the unbanded (anode) end for proper Zener regulation. This polarity is critical-reverse connection will forward-bias the diode and prevent regulation.
How does the 1N5236A perform under elevated temperature conditions?
The 1N5236A operates from –65°C to +175°C and exhibits a positive temperature coefficient of +0.058 %/°C, meaning its Zener voltage increases with rising temperature. At 125°C, the voltage shift is approximately +5.8 mV/°C × 100°C = +0.58 V above its 25°C value-well within predictable bounds for compensated designs.
Can the 1N5236A be used in surface-mount designs?
No-the 1N5236A is strictly an axial-leaded DO-35 device and is not surface-mount compatible. For SMT equivalents, Microsemi offers the MLL5236A in DO-213AA (MELF) package. Substituting 1N5236A into an SMT footprint would require mechanical adaptation and is not recommended for production use.
What is the maximum reverse leakage current specification for the 1N5236A?
The 1N5236A specifies a maximum reverse leakage current (IR) of 30 μA at VR = 6.0 V, measured at 25°C. This low leakage ensures minimal quiescent current draw in standby or high-impedance reference configurations, supporting battery-powered and energy-efficient system designs using the 1N5236A.
1N5236A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 5.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5236A FAQ
1.How can I place an order for 1N5236A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5236A 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 1N5236A reliable?
The price and inventory of 1N5236A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5236A is usually 5 days.
3.What payment methods are accepted for 1N5236A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5236A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5236A?
1N5236A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5236A 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 1N5236A?
For technical support, including 1N5236A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5236A requirements.
6.How does Aetrix verify that 1N5236A is sourced from the original manufacturer or authorized distributors?
All 1N5236A 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 1N5236A meets industry standards.
7.What is the process for return or replacement of 1N5236A?
All 1N5236A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5236A, 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 1N5236A part is unused and in its original packaging.
Return procedure for 1N5236A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5236A Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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