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Microchip Technology 1N756
- Part No.:
- 1N756
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N756.pdf
- Description:
- DIODE ZENER 8.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,669
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Product details
Overview
1N756 from Microsemi is a 500 mW, 8.2 V ±5% silicon Zener diode in DO-35 (DO-204AH) glass axial-leaded package, qualified to JANTXV level per MIL-PRF-19500/127, with dynamic impedance of 5 Ω at 50 mA and temperature coefficient of +0.062 %/°C - used for precision voltage regulation in military power supplies and analog reference circuits.
For engineers reviewing the 1N756 datasheet, 1N756 pinout, 1N756 application, or 1N756 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (250 °C/W junction-to-lead), reverse leakage (≤1 µA at 6.0 V), power derating behavior above 50 °C, and RoHS compliance status for commercial-grade variants.
Technical Context
The 1N756 operates as a two-terminal shunt voltage regulator, conducting in reverse breakdown at nominal 8.2 V with tight regulation maintained across 50 mA test current and ambient temperatures from –65 °C to +175 °C. Its metallurgically bonded junction ensures stable long-term Zener voltage and radiation hardness per MicroNote 050.
It exhibits low dynamic impedance (5 Ω at IZT = 50 mA), minimal capacitance, and ESD insensitivity per MIL-STD-750 Method 1020. The cathode band denotes polarity, requiring the banded end to be biased positive relative to the anode for regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 8.2 V ±5% at IZT = 50 mA - defines regulated output voltage under standard test conditions |
| Power Dissipation | 500 mW at TL = 50 °C, derates linearly to zero at 175 °C - sets maximum continuous thermal load on lead-mounted layout |
| Dynamic Impedance ZZT | 5 Ω at IZT = 50 mA - determines output voltage stability against load current variation |
| Reverse Leakage IR | ≤1 µA at VR = 6.0 V - ensures low quiescent current in standby regulation mode |
| Temp. Coefficient αVZ | +0.062 %/°C - quantifies voltage drift over temperature; positive slope above 6 V |
| Junction-to-Lead RθJL | 250 °C/W @ 0.375″ lead length - critical for thermal design when leads serve as heatsinks |
| Forward Voltage VF | 1.1 V @ IF = 200 mA - relevant for forward-bias protection or dual-mode circuit use |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with tin-lead or RoHS-compliant matte-tin plating; cathode identified by single black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-bias operation | Connected to system ground or lower-potential rail during Zener regulation |
| Cathode | Regulated output node | Banded end; connected to supply rail being stabilized; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/127 qualification | JANTXV-level reliability and screening for aerospace/military systems requiring extended lifetime and failure-rate control |
| Metallurgical bond construction | Enables inherent radiation hardness and long-term parameter stability under thermal cycling |
| Low dynamic impedance | 5 Ω at 50 mA enables <10 mV output variation for ±10 mA load shifts - suitable for precision references |
| ESD immunity | Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in board-level handling |
| RoHS-compliant option | e3 suffix available for commercial-grade versions - supports environmental compliance without performance trade-off |
Applications
| Avionics Power Conditioning | Military Radio Reference Supply |
|---|---|
Use Scenario: Stabilizing +12 V rail in airborne transceiver modules exposed to wide thermal swings and vibration. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias for RF amplifier stages and PLL VCO tuning lines. Use Value: Maintains ≤±0.5% output variation from –55 °C to +125 °C due to +0.062 %/°C TC and low ZZT. | Use Scenario: Generating precise 8.2 V reference for analog-to-digital converter front-end in manpack radios. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference replacing active ICs where size, BOM count, and radiation tolerance are critical. Use Value: Eliminates startup delay and supply sequencing issues while meeting MIL-STD-810G shock/vibe requirements via hermetic DO-35 package. |
| Industrial Sensor Excitation | Test Equipment Calibration Standard |
Use Scenario: Biasing bridge-based pressure sensors in oilfield downhole tools operating at 150 °C ambient. IC Role / Device Role / Timing Role: High-temperature-stable excitation source ensuring consistent sensor gain and offset over full mission life. Use Value: Operates continuously at 150 °C junction temperature with verified parameter stability per MIL-PRF-19500/127 JANTXV screening. | Use Scenario: Serving as traceable 8.2 V reference in portable multimeter calibration fixtures. IC Role / Device Role / Timing Role: Primary voltage standard in metrology-grade equipment requiring low drift and known TC. Use Value: Enables ±0.05% absolute accuracy after initial calibration due to tight 5% VZ tolerance and <1 µA IR at 6 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N756AUR-1 | Same electrical specs; MELF DO-213AA surface-mount package instead of axial DO-35 | Requires SMT reflow process; unsuitable for through-hole prototyping or high-vibration mechanical retention | Select for automated PCB assembly where board space and thermal mass constraints favor MELF geometry |
| MMBZ5238BS | 8.2 V ±5%, SOT-23 package, 200 mW rating, higher ZZT (15 Ω), commercial-only qualification | Lacks MIL-spec screening and high-temp capability; not rated beyond +150 °C | Select for cost-sensitive consumer electronics where JANTXV reliability and 175 °C operation are unnecessary |
Compared with 1N756, the 1N756AUR-1 offers identical regulation performance in a surface-mount form factor ideal for high-density layouts, while the MMBZ5238BS provides a lower-cost commercial alternative with reduced power and temperature capability - choice depends on qualification level, mounting method, and thermal environment.
Availability
1N756 is available at Aetrix Electronics and suitable for avionics power conditioning, military radio reference supply, and industrial sensor excitation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N756 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 Corporation (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N756 belongs to Microsemi's legacy MIL-qualified Zener diode family engineered for voltage regulation in harsh-environment systems where radiation tolerance, thermal stability, and long-term parametric consistency are mandatory.
FAQ
What is the Zener voltage tolerance for 1N756?
The 1N756 has a nominal Zener voltage of 8.2 V with a tolerance of ±5%, as indicated by the "A" suffix in its nomenclature per MIL-PRF-19500/127. This tolerance applies at IZT = 50 mA and TJ = 25 °C. Tighter tolerances (±2% or ±1%) are available under different part number suffixes but are not applicable to the standard 1N756 designation.
Is 1N756 suitable for high-temperature operation?
Yes, the 1N756 is rated for operation from –65 °C to +175 °C junction temperature and is qualified to JANTXV level per MIL-PRF-19500/127. Its metallurgically bonded construction and verified thermal resistance (250 °C/W junction-to-lead) enable reliable function in downhole, avionics, and engine-control environments where sustained high-temperature exposure occurs.
Does 1N756 have RoHS-compliant variants?
Yes, RoHS-compliant versions of 1N756 are available with the "e3" suffix (e.g., 1N756A-1e3), but only for commercial-grade units. Military-qualified variants (JAN/JANTX/JANTXV) retain tin-lead plating per specification requirements and are not RoHS compliant. The e3 marking appears in the part nomenclature and confirms annealed matte-tin plating per MIL-STD-750.
What is the maximum reverse leakage current for 1N756?
The maximum reverse leakage current (IR) for 1N756 is 1 µA when measured at VR = 6.0 V and TJ = 25 °C. This low leakage supports efficient operation in low-power reference and biasing applications, especially where standby current budget is constrained - such as in battery-backed instrumentation or remote sensor nodes.
How does the temperature coefficient affect 1N756's regulation accuracy?
The 1N756 has a positive temperature coefficient of +0.062 %/°C, meaning its Zener voltage increases by approximately 5.1 mV per °C rise above 25 °C. This predictable drift allows system designers to compensate in firmware or analog circuitry, and makes the 1N756 particularly suitable for applications where monotonic, well-characterized voltage shift is preferable to unpredictable variation.
1N756 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):
- 8.2 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N756 FAQ
1.How can I place an order for 1N756 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N756 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 1N756 reliable?
The price and inventory of 1N756 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N756 is usually 5 days.
3.What payment methods are accepted for 1N756?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N756 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N756?
1N756 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N756 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 1N756?
For technical support, including 1N756 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N756 requirements.
6.How does Aetrix verify that 1N756 is sourced from the original manufacturer or authorized distributors?
All 1N756 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 1N756 meets industry standards.
7.What is the process for return or replacement of 1N756?
All 1N756 units undergo pre-shipment inspection (PSI). If there is an issue with 1N756, 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 1N756 part is unused and in its original packaging.
Return procedure for 1N756:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N756 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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