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Microchip Technology 1N754C-1
- Part No.:
- 1N754C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N754C-1.pdf
- Description:
- DIODE ZENER 6.8V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,929
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Product details
Overview
1N754C-1 from Microsemi is a 500 mW, 6.8 V ±2% tolerance silicon Zener diode in DO-35 (DO-204AH) glass axial-leaded 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 1N754C-1 datasheet, 1N754C-1 pinout, 1N754C-1 application, or 1N754C-1 equivalent, key selection criteria include Zener voltage tolerance (±2%), junction-to-lead thermal resistance (250 °C/W), maximum reverse current (2 µA at 4.0 V), RoHS compliance status, and JANTX qualification level for high-reliability environments.
Technical Context
The 1N754C-1 operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across varying load currents and temperatures via controlled reverse breakdown. Its metallurgically bonded junction ensures low noise, minimal capacitance, and radiation hardness per MicroNote 050.
It exhibits a positive temperature coefficient (+0.050 %/°C) above 5.6 V, enabling predictable drift compensation in reference designs. Rated for -65 °C to +175 °C operation, it supports derated power dissipation (400 mW at 55 °C on PCB, 500 mW at 50 °C lead temperature) with solderability per MIL-STD-750 method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.8 V ±2% at IZT = 40 mA - defines nominal regulation point with tight tolerance for stable reference generation |
| Zener Impedance ZZT | 3 Ω at IZT = 40 mA - low dynamic impedance minimizes output voltage variation under load transients |
| Max Reverse Current IR | 2 µA at VR = 4.0 V - ensures low leakage in standby or low-power bias networks |
| Temp Coefficient αVZ | +0.050 %/°C - predictable positive drift enables temperature-compensated reference stacking |
| Power Dissipation PM(AV) | 400 mW at TA = 55 °C on FR4 PCB - sets practical thermal limit for board-level mounting |
| Junction-to-Lead RθJL | 250 °C/W @ 0.375″ lead length - critical for thermal design when leads serve as heat paths |
| Operating Temp Range | -65 °C to +175 °C - supports extended-range operation in aerospace and downhole electronics |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode indicated by color band; terminals are tin-lead or RoHS-compliant matte-tin plated and 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 relative to cathode |
| Cathode | Banded end | Connected to higher-potential node during Zener regulation; reverse-biased terminal where stable VZ develops |
Key Features
| Feature | Design Value |
|---|---|
| JANTX qualification | MIL-PRF-19500/127 certified for high-reliability military applications with full screening and traceability |
| ±2% Zener tolerance | Tighter than standard ±5% variants, reducing calibration overhead in precision analog references |
| Metallurgical bond construction | Enhances long-term stability and reduces parameter drift under thermal cycling and radiation exposure |
| Low 2 µA reverse leakage | Minimizes error current in high-impedance bias networks and sensor front-ends |
| Radiation-hardened design | Inherently resistant to total ionizing dose (TID), validated per Microsemi MicroNote 050 |
Applications
| Military Power Supply Regulation | Precision Analog Reference Circuit |
|---|---|
Use Scenario: Regulating auxiliary rails in airborne radar power modules operating across -55 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Shunt voltage regulator providing stable 6.8 V reference for op-amp biasing and DAC reference buffers. Use Value: JANTX qualification and -65 °C to +175 °C rating ensure reliability in extreme environmental stress screening (ESS). | Use Scenario: Generating a low-drift voltage reference for 16-bit ADCs in test instrumentation. IC Role / Device Role / Timing Role: Precision Zener element in temperature-compensated reference string with matched TC diodes. Use Value: +0.050 %/°C tempco and 3 Ω ZZT enable sub-0.1% reference stability over 0–70 °C. |
| Avionics Sensor Signal Conditioning | Downhole Oilfield Electronics |
Use Scenario: Biasing piezoresistive pressure transducers in flight control systems exposed to vibration and thermal shock. IC Role / Device Role / Timing Role: Low-noise, low-capacitance voltage clamp protecting amplifier inputs from ESD and overvoltage. Use Value: Non-sensitive to ESD per MIL-STD-750 method 1020 and hermetic DO-35 package prevent moisture-induced failure. | Use Scenario: Providing regulated supply for MEMS accelerometers in high-temperature drilling tools (up to 175 °C). IC Role / Device Role / Timing Role: High-temperature-stable shunt regulator replacing active LDOs where quiescent current must be minimized. Use Value: Full -65 °C to +175 °C operation and metallurgical bond construction withstand sustained high-temperature exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N754A-1 | ±5% Zener tolerance vs. ±2% for 1N754C-1; otherwise identical electrical and mechanical specs | Suitable for non-critical regulation where tighter tolerance is unnecessary | Select 1N754A-1 when cost sensitivity outweighs precision requirement |
| 1N754D-1 | ±1% Zener tolerance; higher test cost and longer lead time than 1N754C-1 | Used in metrology-grade references requiring highest initial accuracy | Choose 1N754D-1 only if system-level calibration budget cannot absorb ±2% error |
Compared with 1N754A-1 and 1N754D-1, the 1N754C-1 delivers optimal balance of precision (±2%), qualification level (JANTX), and availability for mid-tier military and industrial applications where ±1% is excessive but ±5% is insufficient.
Availability
1N754C-1 is available at Aetrix Electronics and suitable for military power supplies, precision analog references, avionics signal conditioning, and downhole electronics requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N754C-1 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-1 belongs to Microsemi's legacy MIL-PRF-19500/127-qualified Zener diode family, designed specifically for voltage regulation in defense, space, and harsh-environment industrial systems where parametric stability and qualification rigor are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N754C-1?
The 1N754C-1 has a nominal Zener voltage of 6.8 V with a tolerance of ±2%, as indicated by the "C" suffix in its nomenclature. This tighter tolerance is verified per MIL-PRF-19500/127 test requirements and supports applications demanding higher initial accuracy than the standard ±5% 1N754A-1 variant. The 1N754C-1 maintains this specification across its rated operating temperature range.
Is the 1N754C-1 RoHS compliant?
The 1N754C-1 is not RoHS compliant, as RoHS-compliant versions (e.g., 1N754CUR-1) are offered only in commercial-grade variants without military qualification. The 1N754C-1 carries JANTX qualification per MIL-PRF-19500/127 and uses tin-lead plating, making it exempt from RoHS under applicable exemptions for high-reliability military components. Its datasheet explicitly restricts RoHS compliance to commercial-grade parts only.
What does the "-1" suffix mean in 1N754C-1?
The "-1" suffix in 1N754C-1 denotes the specific revision or manufacturing lot configuration defined in Microsemi's internal part numbering system for MIL-PRF-19500/127-qualified devices. It distinguishes this qualified version from non-qualified commercial variants and ensures traceability to screening, testing, and documentation requirements mandated for JANTX-level parts. The 1N754C-1 is fully documented in T4-LDS-0288 Rev. 1.
What is the maximum power dissipation of the 1N754C-1 at 75 °C ambient?
Per Figure 2 in the T4-LDS-0288 datasheet, the 1N754C-1 linearly derates from 400 mW at 55 °C ambient to zero at 175 °C on an FR4 PCB with 1 oz copper. At 75 °C ambient, its maximum allowable power dissipation is approximately 333 mW. This value assumes standard mounting conditions and accounts for thermal resistance junction-to-ambient (RθJA = 300 °C/W).
How is polarity marked on the 1N754C-1 package?
The 1N754C-1 uses a cathode band marking on its DO-35 glass body to indicate polarity: the banded end is the cathode and must be connected to the higher-potential node during Zener regulation. This marking is consistent across all 1N7xxA-1 series devices and aligns with JEDEC DO-204AH mechanical standards. Forward conduction occurs when the non-banded (anode) end is biased positively relative to the banded end.
1N754C-1 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):
- 6.8 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-1 FAQ
1.How can I place an order for 1N754C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N754C-1 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-1 reliable?
The price and inventory of 1N754C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N754C-1 is usually 5 days.
3.What payment methods are accepted for 1N754C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N754C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N754C-1?
1N754C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N754C-1 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-1?
For technical support, including 1N754C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N754C-1 requirements.
6.How does Aetrix verify that 1N754C-1 is sourced from the original manufacturer or authorized distributors?
All 1N754C-1 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-1 meets industry standards.
7.What is the process for return or replacement of 1N754C-1?
All 1N754C-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N754C-1, 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-1 part is unused and in its original packaging.
Return procedure for 1N754C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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