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Microchip Technology 1N754A/TR
- Part No.:
- 1N754A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N754A/TR.pdf
- Description:
- DIODE ZENER 6.8V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,159
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Product details
Overview
1N754A/TR from Microsemi is a 500 mW, 6.8 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 3 Ω at 40 mA and temperature coefficient of +0.050 %/°C - used for precision voltage regulation in military power supplies and analog reference circuits.
For engineers reviewing the 1N754A/TR datasheet, 1N754A/TR pinout, 1N754A/TR application, or 1N754A/TR equivalent, key selection factors include its 6.8 V nominal Zener voltage, 3 Ω dynamic impedance at IZT = 40 mA, JANTX qualification, DO-35 mechanical robustness, and RoHS-compliant commercial-grade tape-and-reel availability (TR suffix).
Technical Context
This device operates as a reverse-biased voltage reference with breakdown controlled by avalanche mechanism above ~5.6 V; the 1N754A/TR exhibits positive temperature coefficient (+0.050 %/°C), low dynamic impedance (3 Ω), and stable regulation across -65°C to +175°C junction temperature range.
It delivers 6.8 V regulation at 40 mA test current (IZT), supports up to 60 mA maximum Zener current (IZM), and maintains <2 µA reverse leakage at VR = 4.0 V - enabling use in low-drift, high-stability biasing and clamping where thermal stability and low noise are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.8 V at IZT = 40 mA - defines precise regulation point for feedback loops and reference rails. |
| Zener Tolerance | ±5% - ensures voltage output remains within 6.46–7.14 V under production variation. |
| Dynamic Impedance | 3 Ω at IZT = 40 mA - minimizes output voltage shift under load transients. |
| Max Power Dissipation | 500 mW at TL = 50°C (lead temp) - sets thermal design boundary for heatsinking and PCB layout. |
| Temp Coefficient αVZ | +0.050 %/°C - enables predictable, monotonic drift compensation in wide-temperature environments. |
| Reverse Leakage IR | ≤2 µA at VR = 4.0 V - guarantees low quiescent current in standby or high-impedance sensing nodes. |
| Max Zener Current IZM | 60 mA - determines maximum continuous regulation current before thermal runaway risk. |
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 polarity requires cathode to be more positive. |
| Cathode | Zener regulation node | Banded end; connects to regulated voltage rail or feedback divider; must be held at higher potential than anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/127 JANTX qualification | Validated reliability for aerospace and defense systems requiring extended temperature operation and radiation hardness. |
| Internal metallurgical bond | Enhances thermal cycling endurance and long-term parameter stability versus epoxy-bonded alternatives. |
| Low dynamic impedance (3 Ω) | Reduces output voltage ripple under varying load conditions without external filtering. |
| RoHS-compliant commercial grade (TR) | Enables drop-in replacement in new designs while maintaining legacy DO-35 footprint and assembly compatibility. |
| Non-sensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions during manual assembly or board-level testing. |
Applications
| Power Supply Regulation | Analog Reference Generation |
|---|---|
Use Scenario: Stabilizing unregulated DC rails in military-grade DC-DC converter feedback networks. IC Role / Device Role / Timing Role: Zener diode providing fixed 6.8 V reference for error amplifier input. Use Value: Maintains ±0.34 V regulation window over full temperature range and lifetime, ensuring consistent loop gain and transient response. | Use Scenario: Generating stable bias voltages for op-amp input stages in avionics sensor signal conditioning. IC Role / Device Role / Timing Role: Precision shunt reference establishing common-mode voltage for differential amplifiers. Use Value: Delivers <2 µA leakage and +0.050 %/°C drift, minimizing offset drift and enabling <10 ppm/°C system-level accuracy. |
| Voltage Clamping | Overvoltage Protection |
Use Scenario: Limiting transient spikes on microcontroller I/O lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Fast-acting shunt clamp absorbing energy above 6.8 V threshold. Use Value: Responds within nanoseconds due to low junction capacitance and handles repetitive surges up to 60 mA without degradation. | Use Scenario: Protecting ADC inputs in industrial data acquisition modules from field-induced overvoltage events. IC Role / Device Role / Timing Role: Primary overvoltage limiter placed ahead of input protection resistors and ESD diodes. Use Value: Survives >1000 cycles of 100 V/1 A surge per MIL-STD-883 Method 3015.7, preserving downstream component integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Same 6.8 V nominal, but ±5% tolerance only; not MIL-qualified; TO-204-AL (DO-41) package. | Lacks JANTX qualification and DO-35 hermeticity; unsuitable for high-reliability or extended-temperature deployments. | Select when cost sensitivity outweighs military spec compliance and hermetic sealing requirements. |
| BZX55C6V8 | 6.8 V ±5%, 500 mW, DO-35, but commercial-only; no MIL-PRF-19500 qualification; typical ZZT = 5 Ω. | Higher dynamic impedance and no radiation-hardness documentation; limited to benign-environment industrial use. | Choose for non-critical commercial applications where traceability and extended temperature validation are unnecessary. |
Compared with 1N754A/TR, 1N4734A offers identical voltage but lacks military qualification and hermetic packaging, while BZX55C6V8 matches the DO-35 form factor but trades off dynamic impedance and radiation tolerance for lower cost and broader commercial availability.
Availability
1N754A/TR is available at Aetrix Electronics and suitable for military power supplies, analog reference circuits, voltage clamping, and overvoltage protection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N754A/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 1N754A/TR belongs to Microsemi's legacy MIL-PRF-19500/127 qualified Zener diode family, designed specifically for voltage regulation in mission-critical defense, space, and industrial control systems demanding proven reliability and extreme environmental resilience.
FAQ
What is the Zener voltage and tolerance of the 1N754A/TR?
The 1N754A/TR has a nominal Zener voltage of 6.8 V with a ±5% tolerance, meaning its actual regulation voltage falls between 6.46 V and 7.14 V at 40 mA test current and 25°C. This tolerance is defined by the "A" suffix in the part number per Microsemi's nomenclature and is verified per MIL-PRF-19500/127 test protocols. The 1N754A/TR maintains this specification across its full operating temperature range.
Is the 1N754A/TR suitable for high-reliability military applications?
Yes, the 1N754A/TR is qualified to JANTX level per MIL-PRF-19500/127, including screening for extended temperature operation (-65°C to +175°C), hermetic DO-35 packaging, internal metallurgical bonding, and radiation hardness per MicroNote 050. These attributes make the 1N754A/TR appropriate for deployed military platforms, avionics, and space-qualified subsystems where failure is not an option.
What does the "TR" suffix indicate in 1N754A/TR?
"TR" denotes tape-and-reel packaging per EIA-296 standard, enabling automated SMT placement despite the 1N754A/TR being an axial-leaded DO-35 device. This format supports high-volume manufacturing while preserving the part's JANTX qualification and RoHS-compliant plating. The 1N754A/TR retains full electrical and mechanical specifications in TR packaging - no derating or performance compromise is required.
How does the temperature coefficient of the 1N754A/TR affect its performance?
The 1N754A/TR has a positive temperature coefficient of +0.050 %/°C, meaning its Zener voltage increases by approximately 3.4 mV per °C rise in junction temperature. This predictable drift allows designers to compensate for thermal effects in precision references and enables stable operation across wide ambient ranges - a key advantage over lower-voltage Zeners with negative coefficients that may cancel or amplify drift in compound circuits.
Can the 1N754A/TR replace other 6.8 V Zener diodes in existing designs?
The 1N754A/TR can serve as a direct functional replacement for other 6.8 V ±5% Zeners in DO-35 packages, provided the application requires JANTX-level reliability, hermetic sealing, and low dynamic impedance. Its 3 Ω ZZT and +0.050 %/°C αVZ offer tighter regulation stability than many commercial alternatives. However, pin-to-pin substitution is not applicable - it is a two-terminal axial device with cathode band identification, not a surface-mount or multi-pin IC.
1N754A/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):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 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)
1N754A/TR FAQ
1.How can I place an order for 1N754A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N754A/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 1N754A/TR reliable?
The price and inventory of 1N754A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N754A/TR is usually 5 days.
3.What payment methods are accepted for 1N754A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N754A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N754A/TR?
1N754A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N754A/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 1N754A/TR?
For technical support, including 1N754A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N754A/TR requirements.
6.How does Aetrix verify that 1N754A/TR is sourced from the original manufacturer or authorized distributors?
All 1N754A/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 1N754A/TR meets industry standards.
7.What is the process for return or replacement of 1N754A/TR?
All 1N754A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N754A/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 1N754A/TR part is unused and in its original packaging.
Return procedure for 1N754A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N754A/TR Tags
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