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Microchip Technology 1N754C/TR
- Part No.:
- 1N754C/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N754C/TR.pdf
- Description:
- DIODE ZENER 6.8V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,940
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Product details
Overview
1N754C/TR from Microsemi is a 500 mW, 6.8 V ±2% tolerance silicon Zener diode in DO-35 glass axial 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 supply reference circuits.
For engineers reviewing the 1N754C/TR datasheet, 1N754C/TR pinout, 1N754C/TR application, or 1N754C/TR equivalent, key selection factors include Zener voltage tolerance (±2%), junction-to-lead thermal resistance (250 °C/W), RoHS-compliant commercial-grade plating, cathode band polarity marking, and tape-and-reel packaging (TR suffix).
Technical Context
This device operates as a reverse-biased voltage reference regulator with a nominal Zener voltage of 6.8 V at 40 mA test current (IZT), exhibiting low dynamic impedance (3 Ω) and positive temperature coefficient (+0.050 %/°C) above 6 V. It maintains stable regulation across –65 °C to +175 °C operating temperature range.
Its hermetically sealed DO-35 glass package features internal metallurgical bonding, tin-lead or RoHS-compliant matte-tin plating, and cathode identification via axial band. The TR suffix confirms EIA-296 tape-and-reel packaging for automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V at 40 mA - defines precise regulation point for reference design |
| Voltage Tolerance | ±2% - tighter than standard ±5%, enabling higher accuracy feedback loops |
| Power Dissipation | 500 mW at TL = 50 °C - supports robust thermal margin in leaded mounting |
| Dynamic Impedance (ZZT) | 3 Ω at IZT = 40 mA - ensures minimal output voltage variation under load transients |
| Temp Coefficient (αVZ) | +0.050 %/°C - predictable upward drift improves stability in warm environments |
| Max Reverse Current (IR) | 2 µA at VR = 4.0 V - low leakage preserves regulation integrity near knee voltage |
| Junction Temp Range | –65 °C to +175 °C - enables operation in extreme military/aerospace environments |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded 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 lower-potential node; forward conduction path when biased positively |
| Cathode | Banded end | Connected to higher-potential node during Zener regulation; defines reference output node |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/127 qualification | JANTX-level reliability verified for defense systems requiring extended lifetime and radiation hardness |
| Internal metallurgical bond | Enhances thermal cycling endurance and long-term parameter stability under mechanical stress |
| RoHS-compliant plating | Matte-tin termination meets environmental compliance without sacrificing solderability or shelf life |
| Low capacitance | Minimizes high-frequency coupling in noise-sensitive analog reference paths |
| ESD insensitivity | Non-sensitive per MIL-STD-750 method 1020 - eliminates need for external ESD protection in handling |
Applications
| Avionics Power Reference | Military Radio Bias Supply |
|---|---|
Use Scenario: Stable 6.8 V reference for ADC voltage reference and op-amp biasing in airborne navigation units. IC Role / Device Role / Timing Role: Zener regulator providing fixed reference voltage independent of input ripple or temperature drift. Use Value: ±2% tolerance and +0.050 %/°C TC ensure <±15 mV deviation over –55 °C to +125 °C operational range. | Use Scenario: Local bias rail generation for RF front-end amplifiers in handheld tactical radios. IC Role / Device Role / Timing Role: Voltage clamp and regulation element in discrete LDO pre-regulator stage. Use Value: 3 Ω dynamic impedance suppresses supply-induced AM modulation on RF stages. |
| Spacecraft Sensor Interface | Hardened Industrial PLC Input |
Use Scenario: Reference source for radiation-tolerant temperature sensor signal conditioning in satellite payloads. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference maintaining calibration integrity in total ionizing dose environments. Use Value: Inherent radiation hardness per MicroNote 050 enables >100 krad(Si) operation without parameter shift. | Use Scenario: Overvoltage protection and level-shifting element in 24 V DC input modules of factory automation controllers. IC Role / Device Role / Timing Role: Clamp diode limiting transient excursions while regulating steady-state bias. Use Value: 500 mW power rating and –65 °C to +175 °C range support continuous operation in uncooled enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N754A/TR | ±5% tolerance (vs. ±2% for 1N754C/TR); same VZ, ZZT, and package | Acceptable where reference accuracy <±340 mV is sufficient | Select 1N754A/TR for cost-sensitive commercial designs with relaxed tolerance budgets |
| MMSZ4689-TP | Surface-mount SOD-123 package; 6.8 V ±5%; 500 mW; 3 Ω ZT; RoHS only | Requires PCB redesign; lacks MIL qualification and extended temp range | Choose MMSZ4689-TP only for space-constrained, high-volume commercial boards without military requirements |
Compared with 1N754A/TR and MMSZ4689-TP, the 1N754C/TR uniquely delivers ±2% tolerance, JANTX qualification, and –65 °C to +175 °C operation in a through-hole DO-35 package - making it irreplaceable for high-reliability analog references where accuracy, ruggedness, and legacy compatibility are mandatory.
Availability
1N754C/TR is available at Aetrix Electronics and suitable for avionics power reference, military radio bias supply, and spacecraft sensor interface applications requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N754C/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 1N754C/TR belongs to Microsemi's legacy MIL-PRF-19500/127 qualified Zener diode family, engineered specifically for precision voltage regulation in defense, space, and critical infrastructure systems.
FAQ
What is the Zener voltage and test current for the 1N754C/TR?
The 1N754C/TR has a nominal Zener voltage of 6.8 V measured at a test current (IZT) of 40 mA. This value is guaranteed within ±2% tolerance at 25 °C, and the device maintains regulation stability across its full operating temperature range of –65 °C to +175 °C. The 1N754C/TR datasheet specifies this condition explicitly in the Electrical Characteristics table on page 3.
Is the 1N754C/TR RoHS compliant?
Yes, the 1N754C/TR is RoHS compliant, as confirmed by the "e3" RoHS designation in its nomenclature and stated in the Features section of the datasheet. Its matte-tin plating meets RoHS requirements and is solderable per MIL-STD-750 method 2026. Note that RoHS compliance applies only to the commercial-grade version - JANTX variants retain tin-lead plating.
What does the "C" in 1N754C/TR signify?
The "C" in 1N754C/TR denotes ±2% Zener voltage tolerance, per Microsemi's part nomenclature guide. The "TR" suffix indicates EIA-296 tape-and-reel packaging for automated placement. Together, 1N754C/TR identifies a 6.8 V, ±2%, RoHS-compliant, tape-and-reel packaged Zener diode in DO-35 package - distinct from 1N754A/TR (±5%) and 1N754D/TR (±1%).
What is the maximum power dissipation of the 1N754C/TR and how does it derate?
The 1N754C/TR has an average rated power dissipation of 500 mW at lead temperature (TL) = 50 °C with 0.375 inch lead length. It linearly derates to zero at 175 °C, per Figure 1. When mounted on a PCB, it derates from 400 mW starting at 55 °C ambient (TA), also reaching zero at 175 °C per Figure 2 - critical for thermal design in enclosed military enclosures.
How is polarity marked on the 1N754C/TR and what is its correct biasing configuration?
The 1N754C/TR uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode (non-banded end) for Zener regulation. This reverse-bias configuration allows the device to conduct and regulate at 6.8 V. Forward voltage is specified as 1.1 V at 200 mA - confirming standard silicon diode behavior in forward conduction.
1N754C/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:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 5 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)
1N754C/TR FAQ
1.How can I place an order for 1N754C/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N754C/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 1N754C/TR reliable?
The price and inventory of 1N754C/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N754C/TR is usually 5 days.
3.What payment methods are accepted for 1N754C/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N754C/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N754C/TR?
1N754C/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N754C/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 1N754C/TR?
For technical support, including 1N754C/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N754C/TR requirements.
6.How does Aetrix verify that 1N754C/TR is sourced from the original manufacturer or authorized distributors?
All 1N754C/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 1N754C/TR meets industry standards.
7.What is the process for return or replacement of 1N754C/TR?
All 1N754C/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N754C/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 1N754C/TR part is unused and in its original packaging.
Return procedure for 1N754C/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N754C/TR Tags
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