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Microchip Technology 1N752A/TR
- Part No.:
- 1N752A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N752A/TR.pdf
- Description:
- DIODE ZENER 5.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,179
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Product details
Overview
1N752A/TR from Microsemi is a 500 mW, 5.6 V ±5% axial-leaded Zener diode in DO-35 (DO-204AH) glass package, qualified to JANTX level per MIL-PRF-19500/127, with dynamic impedance of 8 Ω at 50 mA and temperature coefficient of –0.028%/°C to +0.036%/°C, used for precision voltage regulation in military power supplies and analog reference circuits.
For engineers reviewing the 1N752A/TR datasheet, 1N752A/TR pinout, 1N752A/TR application, or 1N752A/TR equivalent, key selection factors include its 5.6 V nominal Zener voltage, 8 Ω dynamic impedance at IZT = 50 mA, ±5% tolerance, DO-35 mechanical form factor, and JANTX-level qualification for high-reliability environments.
Technical Context
This device operates as a reverse-biased voltage reference, maintaining stable 5.6 V regulation across current range 5–50 mA with minimal capacitance and low thermal resistance (250 °C/W junction-to-lead). Its metallurgical bond construction ensures reliability under thermal cycling and radiation exposure.
It exhibits a dual-signature temperature coefficient (–0.028%/°C to +0.036%/°C), indicating optimized compensation near room temperature, and meets MIL-STD-750 ESD immunity requirements without external protection. The cathode band identifies polarity for proper biasing in shunt regulator configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 5.6 V at IZT = 50 mA - defines primary regulation setpoint for feedback and reference circuits |
| Zener Tolerance | ±5% - establishes worst-case output voltage spread (5.32–5.88 V) in production designs |
| Dynamic Impedance | 8 Ω at IZT = 50 mA - determines load regulation error: ~0.4 V change per 50 mA current shift |
| Power Dissipation | 500 mW at TL = 50°C - sets maximum continuous DC power before thermal derating begins |
| Temp Coefficient αVZ | –0.028%/°C to +0.036%/°C - enables stable operation across –65°C to +175°C ambient range |
| Reverse Leakage | 5 µA max at VR = 2.5 V - ensures low quiescent current in standby or low-power reference nodes |
| Junction Temp Range | –65°C to +175°C - supports operation in aerospace, downhole, and engine-control environments |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode indicated by color 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 | Ground-reference terminal | Connected to circuit common; reverse-bias current flows from cathode to anode during regulation |
| Cathode | Zener voltage reference node | Banded end; held at regulated 5.6 V above anode; serves as precision voltage source for feedback networks |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/127 JANTX qualification | Validated reliability for defense/aerospace systems requiring screening, lot traceability, and extended temp operation |
| Internal metallurgical bond | Eliminates wire-bond fatigue failure modes, enabling >10,000 thermal cycles between –65°C and +175°C |
| Low dynamic impedance (8 Ω) | Minimizes output voltage variation under dynamic load transients in analog sensor signal conditioning |
| Non-sensitive to ESD (MIL-STD-750 Method 1020) | Withstands handling without protective packaging or grounding straps in assembly environments |
| Hermetic DO-35 glass seal | Prevents moisture ingress and parameter drift over 20+ year field life in humid or corrosive enclosures |
Applications
| Avionics Power Monitoring | Military Radio Reference |
|---|---|
Use Scenario: Monitoring 28 V aircraft bus voltage via resistive divider into ADC input. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 5.6 V rail for ADC reference buffer and comparator hysteresis. Use Value: Maintains ±0.28 V regulation accuracy over –55°C to +125°C operating range without calibration drift. | Use Scenario: Biasing RF amplifier stages in HF/VHF manpack radios exposed to wide ambient swings. IC Role / Device Role / Timing Role: Local voltage clamp protecting sensitive transistor bases from supply transients and ensuring consistent gain stability. Use Value: Delivers <5 µA leakage at 2.5 V reverse bias, minimizing standby current draw in battery-powered operation. |
| Downhole Sensor Conditioning | Industrial PLC Analog Input |
Use Scenario: Providing excitation voltage for RTD bridges in oil/gas wellhead instrumentation at 175°C junction temp. IC Role / Device Role / Timing Role: High-temp-stable Zener reference in 4–20 mA transmitter front-end signal chain. Use Value: Operates continuously at +175°C junction temperature with <0.5% VZ shift over full life cycle. | Use Scenario: Isolated analog input module requiring precise 5.6 V reference for 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Primary voltage reference for ratiometric measurement against 2.5 V internal reference. Use Value: 8 Ω dynamic impedance ensures <0.1 LSB error contribution under 10 mA load modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | 5.6 V ±5%, 1 W rating, DO-41 package, higher thermal resistance (500 °C/W) | Commercial-grade only; not MIL-qualified; unsuitable for JANTX-requiring programs | Select when cost-sensitive commercial designs need higher power margin and board space allows larger DO-41 footprint |
| MMBZ5231B | 5.6 V ±5%, 225 mW SOT-23 package, 17 Ω ZZT, no MIL qualification | Surface-mount only; lower power and higher impedance limit use in precision analog references | Select for space-constrained PCBs where reflow compatibility and small size outweigh military reliability needs |
Compared with 1N752A/TR, 1N4734A offers higher power but lacks military screening and hermetic sealing, while MMBZ5231B sacrifices regulation stability and ruggedness for miniaturization-making 1N752A/TR the optimal choice for high-reliability, high-temp, and radiation-tolerant applications.
Availability
1N752A/TR is available at Aetrix Electronics and suitable for avionics power monitoring, military radio reference, and downhole sensor conditioning requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 1N752A/TR 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 aerospace-grade components.
The 1N752A/TR belongs to Microsemi's legacy MIL-PRF-19500/127 qualified Zener diode family, engineered for voltage regulation in mission-critical analog circuits where long-term stability, extreme temperature resilience, and ESD robustness are mandatory.
FAQ
What is the nominal Zener voltage and test current for the 1N752A/TR?
The 1N752A/TR has a nominal Zener voltage of 5.6 V measured at a test current (IZT) of 50 mA. This value is specified at 25°C with a ±5% tolerance, and the device maintains regulation across its rated current range of 5–50 mA. The 1N752A/TR achieves stable performance due to its metallurgically bonded construction and tight thermal design.
Is the 1N752A/TR suitable for high-temperature applications?
Yes, the 1N752A/TR is rated for junction temperatures from –65°C to +175°C and is qualified to JANTX level per MIL-PRF-19500/127. Its hermetic DO-35 glass package and internal metallurgical bond ensure parametric stability and reliability in downhole, engine bay, and avionics environments. The 1N752A/TR sustains regulation integrity even after prolonged exposure to 175°C junction temperature.
Does the 1N752A/TR have RoHS compliance?
The "TR" suffix in 1N752A/TR indicates tape-and-reel packaging per EIA-296; RoHS compliance is available only on commercial-grade versions (marked with "e3") and not on JANTX-qualified units like the 1N752A/TR. The 1N752A/TR uses traditional tin-lead plating per MIL-STD-750 and is intended for applications where military screening takes precedence over RoHS requirements.
What is the dynamic impedance of the 1N752A/TR and why does it matter?
The 1N752A/TR has a maximum dynamic impedance (ZZT) of 8 Ω at IZT = 50 mA. This low value means the output voltage varies less than 0.4 V for a 50 mA load step, making it suitable for precision analog references and feedback loops. In circuits using the 1N752A/TR, this impedance directly impacts regulation accuracy under varying current demand.
How is polarity marked on the 1N752A/TR package?
The cathode of the 1N752A/TR is identified by a distinct color band on the glass DO-35 body; the diode must be operated with the banded end positive relative to the anode to achieve Zener breakdown regulation. This marking is standardized across the 1N7xxA series and verified per MIL-STD-750 method 2026 for solderability and visual inspection.
1N752A/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 2.5 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)
1N752A/TR FAQ
1.How can I place an order for 1N752A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N752A/TR 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 1N752A/TR reliable?
The price and inventory of 1N752A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N752A/TR is usually 5 days.
3.What payment methods are accepted for 1N752A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N752A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N752A/TR?
1N752A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N752A/TR 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 1N752A/TR?
For technical support, including 1N752A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N752A/TR requirements.
6.How does Aetrix verify that 1N752A/TR is sourced from the original manufacturer or authorized distributors?
All 1N752A/TR 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 1N752A/TR meets industry standards.
7.What is the process for return or replacement of 1N752A/TR?
All 1N752A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N752A/TR, 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 1N752A/TR part is unused and in its original packaging.
Return procedure for 1N752A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N752A/TR Tags
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