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Microchip Technology 1N5236B
- Part No.:
- 1N5236B
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5236B.pdf
- Description:
- DIODE ZENER 7.5V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,249
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Product details
Overview
1N5236B from Microsemi is a 7.5 V, ±5% 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 IZT, used for precision voltage regulation in low-power analog reference and biasing circuits.
For engineers reviewing the 1N5236B datasheet, 1N5236B pinout, 1N5236B application, or 1N5236B equivalent, this page delivers verified electrical specs, thermal derating behavior, Zener temperature coefficient (+0.058 %/°C), cathode polarity marking, and RoHS-compliant e3 variant availability.
Technical Context
The 1N5236B operates as a reverse-biased voltage reference with sharp breakdown knee, specified at 20 mA test current and characterized over −65°C to +175°C ambient range. Its 6.0 Ω zener impedance (ZZT) at IZT and 3.0 Ω impedance at knee current (ZZK = 0.25 mA) ensure stable regulation under varying load conditions.
It features a positive temperature coefficient of +0.058 %/°C, indicating increasing Zener voltage with rising junction temperature - critical for thermal drift compensation in precision references. The device uses hermetically sealed glass DO-35 construction with tin-lead or matte-tin plating, rated for 260°C soldering (10 s).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 7.5 V @ 20 mA - defines regulated output voltage under standard test condition |
| Zener Tolerance | ±5% (B suffix) - ensures voltage accuracy within 7.13–7.88 V at 25°C |
| Power Dissipation | 500 mW at 25°C - sets maximum continuous power before thermal derating begins |
| Zener Impedance | 6.0 Ω @ IZT - low dynamic resistance enables tight regulation under current variation |
| Temp. Coefficient | +0.058 %/°C - quantifies voltage drift per degree rise; used for thermal error budgeting |
| Reverse Leakage | 30 μA @ 6.0 V - specifies maximum off-state current below breakdown, affecting quiescent power |
| Forward Voltage | ≤1.5 V @ 200 mA - defines conduction threshold in forward bias; relevant for protection schemes |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package: hermetically sealed cylindrical glass body with tinned copper alloy leads; cathode identified by single black band; total weight 0.2 g; lead length ≥10 mm for thermal rating compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node; forward conduction path when biased positively |
| Cathode | Banded end | Connected to higher-potential node during Zener operation; defines regulation polarity |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered DO-35 construction | Ensures mechanical and thermal interchangeability across qualified suppliers |
| RoHS-compliant option (e3 suffix) | Enables compliance with environmental directives without performance trade-off |
| −65°C to +175°C operating range | Supports deployment in aerospace, downhole, and high-temp industrial environments |
| Low 30 μA max reverse leakage @ 6.0 V | Minimizes standby current in battery-powered voltage monitor circuits |
| Radiation-hardened per MicroNote 050 | Validated for use in space-grade systems requiring TID tolerance |
Applications
| Reference Voltage Source | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 7.5 V reference for ADC voltage dividers and op-amp bias networks in sensor signal conditioning modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to deliver fixed reference potential independent of supply variation. Use Value: Delivers ±5% voltage accuracy and <6 Ω dynamic impedance, enabling <0.5% full-scale error in 12-bit measurement systems. | Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events on industrial control bus lines. IC Role / Device Role / Timing Role: Shunt clamping device that conducts above 7.5 V to divert surge current away from sensitive inputs. Use Value: Fast response (<10 ns) and 500 mW peak dissipation limit transient energy without latch-up or damage. |
| Power Supply Feedback | Current Source Bias |
Use Scenario: Setting feedback voltage in discrete linear regulator designs for 7.5 V output rails in instrumentation power supplies. IC Role / Device Role / Timing Role: Precision voltage reference element in error amplifier feedback loop. Use Value: Stable 7.5 V reference with +0.058 %/°C tempco allows predictable output drift tracking over temperature. | Use Scenario: Establishing constant base-emitter bias for PNP current source transistors in analog front-end amplifiers. IC Role / Device Role / Timing Role: Fixed-voltage drop element defining emitter-base differential for current mirror stability. Use Value: Low ZZT (6.0 Ω) maintains consistent bias point despite collector current ripple, reducing gain variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A (ON Semiconductor) | Same 7.5 V nominal, ±5% tolerance, but DO-41 package (larger, higher thermal mass); 6.0 Ω ZZT, 1 W power rating | Higher power handling supports sustained 100 mA regulation; less suitable for space-constrained PCBs | Select when board layout permits larger footprint and higher continuous power is required |
| BZX55-C7V5 (Vishay) | 7.5 V, ±5%, DO-35 package, but 500 mW rating and 10 Ω ZZT; RoHS-only, no legacy tin-lead option | Higher dynamic impedance increases regulation error under load step; optimized for cost-sensitive consumer designs | Select for RoHS-only production where tighter thermal design margins accommodate higher ZZT |
Compared with 1N5236B, the 1N4734A offers higher power margin but requires more board area, while the BZX55-C7V5 matches form factor and compliance but trades 66% higher dynamic impedance - impacting regulation stability in precision analog stages.
Availability
1N5236B is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and power supply feedback applications requiring stable component supply, long-term obsolescence management, and traceable sourcing for industrial control, test equipment, and aerospace subsystems.
Supply support for 1N5236B 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 high-temperature analog and mixed-signal components.
The 1N52xxB series belongs to Microsemi's legacy Zener diode product line, engineered for precision voltage regulation in mission-critical systems where stability, wide temperature operation, and JEDEC-standard reliability are mandatory.
FAQ
What is the nominal Zener voltage and tolerance of the 1N5236B?
The 1N5236B has a nominal Zener voltage of 7.5 V with a guaranteed tolerance of ±5%, as indicated by the "B" suffix per JEDEC specification. This means its actual breakdown voltage falls between 7.13 V and 7.88 V at 25°C and 20 mA test current, confirmed in Microsemi's official datasheet revision D (2005).
What package type and marking does the 1N5236B use?
The 1N5236B uses the DO-35 (DO-204AH) glass axial-leaded package with a black cathode band for polarity identification. It is marked with the full part number "1N5236B" on the glass body, and optional RoHS compliance is denoted by the "e3" suffix (e.g., 1N5236Be3).
What is the maximum power dissipation and thermal derating behavior of the 1N5236B?
The 1N5236B is rated for 500 mW at 25°C ambient or lead temperature (TL < 50°C at 10 mm from body). Power must be linearly derated above 50°C TL at 4.0 mW/°C, per Figure 1 in the datasheet. On FR4 PCB with defined copper pads, derating begins at 25°C TA at 4.8 mW/°C.
How does the temperature coefficient affect the 1N5236B's regulation voltage?
The 1N5236B has a positive temperature coefficient of +0.058 %/°C, meaning its Zener voltage increases by approximately 4.35 mV per °C rise in junction temperature. This value is measured between 25°C and 125°C at rated IZT and must be included in thermal error budgets for precision reference designs.
Is the 1N5236B suitable for high-reliability or radiation-exposed environments?
Yes - the 1N5236B is inherently radiation-hardened per MicroNote 050 and qualified to MIL-PRF-19500 screening levels (e.g., JANTXV) when ordered with appropriate prefixes. Its DO-35 glass package and construction support operation from −65°C to +175°C, making it suitable for aerospace, defense, and downhole applications.
1N5236B 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:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 6 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)
1N5236B FAQ
1.How can I place an order for 1N5236B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5236B 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 reliable?
The price and inventory of 1N5236B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5236B is usually 5 days.
3.What payment methods are accepted for 1N5236B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5236B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5236B?
1N5236B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5236B 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?
For technical support, including 1N5236B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5236B requirements.
6.How does Aetrix verify that 1N5236B is sourced from the original manufacturer or authorized distributors?
All 1N5236B 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 meets industry standards.
7.What is the process for return or replacement of 1N5236B?
All 1N5236B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5236B, 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 part is unused and in its original packaging.
Return procedure for 1N5236B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5236B 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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