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Microchip Technology 1N753D
- Part No.:
- 1N753D
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N753D.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,936
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Product details
Overview
1N753D from Microsemi is a 500 mW, 6.2 V ±1% tolerance silicon Zener diode in DO-35 glass axial package, qualified to JANTXV level per MIL-PRF-19500/127, with dynamic impedance of 3 Ω at 20 mA, reverse current ≤5 µA at 3.5 V, and temperature coefficient of +0.045 %/°C - used for precision voltage reference and regulation in military power supplies and analog sensor biasing circuits.
For engineers reviewing the 1N753D datasheet, 1N753D pinout, 1N753D application, or 1N753D equivalent, key selection criteria include its tight 1% Zener voltage tolerance, hermetically sealed DO-35 package, JANTXV qualification, low dynamic impedance, and stable positive temperature coefficient above 5.6 V - critical for high-reliability analog references and regulated power rails.
Technical Context
The 1N753D operates as a reverse-biased voltage reference diode with metallurgically bonded junction, delivering stable 6.2 V regulation across -65°C to +175°C. Its 3 Ω dynamic impedance at IZT = 20 mA ensures minimal output voltage variation under load transients.
It features a positive temperature coefficient (+0.045 %/°C), making it suitable for temperature-compensated reference designs when paired with negative-TC components. Rated for 500 mW at 50°C lead temperature, it derates linearly to zero at 175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.2 V at 20 mA test current - defines precise regulation point for reference and clamp circuits |
| Zener Tolerance | ±1% - enables high-accuracy voltage setting without post-calibration |
| Dynamic Impedance | 3 Ω at 20 mA - ensures <15 mV output shift for ±50 mA load change |
| Max Reverse Current | ≤5 µA at 3.5 V - guarantees low leakage in high-impedance bias networks |
| Temp Coefficient αVZ | +0.045 %/°C - supports predictable drift compensation in wide-temperature systems |
| Power Dissipation | 500 mW at 50°C lead temp - sets thermal design margin for through-hole PCB mounting |
| Junction-to-Lead RθJL | 250 °C/W - informs heatsinking requirements when leads serve as thermal path |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Banded end | Connected to regulated voltage node; must be held positive relative to anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| JANTXV qualification | MIL-PRF-19500/127 certified for aerospace and defense systems requiring extended reliability screening |
| Metallurgical bond | Eliminates wire-bond failure modes, enhancing long-term stability under thermal cycling |
| Low capacitance | Typical <2 pF - preserves high-frequency signal integrity in RF bias and timing circuits |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for space-qualified analog subsystems |
Applications
| Avionics Power Reference | Military Sensor Biasing |
|---|---|
Use Scenario: Stable 6.2 V reference for ADC voltage reference inputs in flight control computers. IC Role / Device Role / Timing Role: Precision shunt voltage reference providing temperature-stable excitation for analog front-end circuitry. Use Value: ±1% tolerance and +0.045 %/°C TC enable <±0.5% total error over -55°C to +125°C operating range. | Use Scenario: Biasing network for piezoresistive pressure transducers in armored vehicle telemetry systems. IC Role / Device Role / Timing Role: Low-leakage (≤5 µA @ 3.5 V) Zener clamp establishing fixed common-mode voltage. Use Value: Hermetic DO-35 package and JANTXV qualification ensure operation in high-vibration, wide-temperature environments. |
| Secure Comms Regulator | Tactical Radio LDO Pre-regulation |
Use Scenario: Voltage regulation for cryptographic module power rails in TEMPEST-certified radios. IC Role / Device Role / Timing Role: Shunt regulator maintaining clean 6.2 V supply despite input ripple and EMI. Use Value: 3 Ω dynamic impedance suppresses >90% of 100 kHz–1 MHz noise on unregulated DC inputs. | Use Scenario: Pre-regulation stage feeding low-dropout regulators in handheld tactical radios. IC Role / Device Role / Timing Role: Primary voltage clamp limiting input to downstream LDO under transient overvoltage events. Use Value: 500 mW power rating and 250 °C/W junction-to-lead thermal resistance allow robust surge handling without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N753A | ±5% Zener tolerance vs. 1N753D's ±1%; same DO-35 package and JANTXV qualification | Lower accuracy reference; acceptable where calibration or trimming is available | Select 1N753A only if system-level calibration compensates for initial voltage error |
| SMZ6.2A | Surface-mount SOD-123 package; ±5% tolerance; commercial-grade only; no MIL qualification | Not suitable for military/aerospace use; limited to industrial PCBs with reflow assembly | Choose SMZ6.2A only for cost-sensitive, non-military designs with automated SMT production |
Compared with 1N753A and SMZ6.2A, the 1N753D uniquely delivers 1% tolerance, JANTXV qualification, and hermetic DO-35 packaging - essential for uncalibrated, high-reliability analog references where long-term stability and environmental resilience are mandatory.
Availability
1N753D is available at Aetrix Electronics and suitable for avionics power reference, military sensor biasing, secure comms regulation, and tactical radio LDO pre-regulation requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N753D 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) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and military-qualified analog and mixed-signal components.
The 1N753D belongs to Microsemi's legacy MIL-PRF-19500/127 qualified Zener diode family, designed specifically for precision voltage regulation in defense, aerospace, and critical infrastructure systems where long-term parametric stability and environmental survivability are non-negotiable.
FAQ
What is the Zener voltage tolerance of the 1N753D?
The 1N753D has a nominal Zener voltage of 6.2 V with a guaranteed tolerance of ±1% at 20 mA test current. This tight tolerance is achieved via post-process screening and is specified in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0288 datasheet. The 1N753D achieves this accuracy without external trimming, making it suitable for high-precision analog references where calibration is impractical.
Is the 1N753D qualified for military applications?
Yes, the 1N753D is qualified to JANTXV level per MIL-PRF-19500/127, including rigorous screening for temperature cycling, mechanical shock, vibration, and hermeticity. Its DO-35 glass package and metallurgical bond meet the reliability requirements for airborne, missile, and naval systems. The 1N753D's qualification status is explicitly documented in the "Qualified Levels" section of the T4-LDS-0288 datasheet.
What is the maximum power dissipation of the 1N753D?
The 1N753D is rated for 500 mW average power dissipation at a lead temperature (TL) of +50°C, with linear derating to zero at +175°C. When mounted on a PCB, its rated power drops to 400 mW at +55°C ambient, per Figure 2 in the datasheet. This thermal profile directly impacts heatsink design and board layout - the 1N753D's 250 °C/W RθJL means 125°C junction rise occurs at just 500 mW with ideal lead conduction.
Does the 1N753D have a positive or negative temperature coefficient?
The 1N753D exhibits a positive temperature coefficient of +0.045 %/°C at 25°C, confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0288 datasheet. This behavior is typical for Zener diodes above 5.6 V and enables predictable voltage drift compensation in reference circuits. Unlike lower-voltage Zeners, the 1N753D's output increases with temperature - a key factor in designing thermally stable analog subsystems.
What package type does the 1N753D use?
The 1N753D uses the DO-35 (DO-204AH) hermetically sealed axial-lead glass package, with cathode identified by a colored band. Its dimensions - body diameter 1.40–2.29 mm, body length 3.05–5.08 mm, and lead length 25.4–38.1 mm - are fully specified in the Package Dimensions table on page 6 of the datasheet. This package supports manual or wave soldering and meets MIL-STD-750 method 2026 solderability requirements.
1N753D 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):
- 6.2 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 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)
1N753D FAQ
1.How can I place an order for 1N753D through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N753D 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 1N753D reliable?
The price and inventory of 1N753D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N753D is usually 5 days.
3.What payment methods are accepted for 1N753D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N753D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N753D?
1N753D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N753D 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 1N753D?
For technical support, including 1N753D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N753D requirements.
6.How does Aetrix verify that 1N753D is sourced from the original manufacturer or authorized distributors?
All 1N753D 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 1N753D meets industry standards.
7.What is the process for return or replacement of 1N753D?
All 1N753D units undergo pre-shipment inspection (PSI). If there is an issue with 1N753D, 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 1N753D part is unused and in its original packaging.
Return procedure for 1N753D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N753D Tags
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