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Microchip Technology 1N753C
- Part No.:
- 1N753C
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N753C.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,162
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Product details
Overview
1N753C from Microsemi is a 500 mW, 6.2 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 20 mA and temperature coefficient of +0.045 %/°C. It provides precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N753C datasheet, 1N753C pinout, 1N753C application, or 1N753C equivalent, key selection factors include its ±2% Zener voltage tolerance, low 3 Ω dynamic impedance at IZT = 20 mA, JANTX qualification for high-reliability environments, RoHS-compliant commercial variants, and thermal resistance of 250 °C/W (junction-to-lead).
Technical Context
The 1N753C operates as a reverse-biased voltage reference diode with metallurgically bonded junction, enabling stable regulation across -65°C to +175°C. Its Zener voltage is specified at 6.2 V with test current IZT = 20 mA and exhibits a positive temperature coefficient (+0.045 %/°C), indicating increasing VZ with rising temperature.
It delivers 50 mA maximum Zener current (IZM) at rated power, supports 5 µA maximum reverse leakage at VR = 3.5 V, and maintains minimal capacitance and ESD insensitivity per MIL-STD-750 Method 1020 - critical for analog reference stability and ruggedized system design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.2 V ±2% at IZT = 20 mA - enables precise mid-range voltage reference with tighter tolerance than standard ±5% variants. |
| Dynamic Impedance ZZT | 3 Ω at IZT = 20 mA - ensures low output impedance for stable regulation under varying load currents. |
| Max Zener Current IZM | 50 mA - defines safe continuous operating current limit at full 500 mW dissipation capability. |
| Temp Coefficient αVZ | +0.045 %/°C - indicates predictable, monotonic VZ increase with temperature, simplifying thermal compensation. |
| Reverse Leakage IR | 5 µA max at VR = 3.5 V - guarantees low quiescent error in high-impedance bias networks. |
| Thermal Resistance RθJL | 250 °C/W - allows accurate junction temperature estimation when lead temperature TL is monitored at 9.53 mm. |
| Power Dissipation PM(AV) | 500 mW at TL = +50°C - sets baseline thermal design margin for axial-leaded PCB mounting. |
Pinout & Package
Package: DO-35 (DO-204AH), hermetically sealed axial-leaded glass case with cathode band marking. Tin-lead or RoHS-compliant matte-tin plating on leads; solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node during Zener operation; forward conduction path at VF ≤ 1.1 V @ 200 mA. |
| Cathode | Banded end | Connected to higher-potential node during Zener regulation; defines polarity for reverse-bias operation and voltage reference output. |
Key Features
| Feature | Design Value |
|---|---|
| JANTX qualification | MIL-PRF-19500/127 certified for military-grade reliability, including screening and lot traceability. |
| ±2% Zener tolerance | Narrower voltage spread vs. standard ±5% parts, reducing calibration overhead in precision references. |
| Metallurgical bond | Enhances long-term parameter stability and thermal cycling robustness in harsh environments. |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for space-qualified subsystems. |
| Low capacitance | Minimizes signal coupling and noise injection in high-frequency reference or feedback paths. |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stable 6.2 V reference for linear regulator feedback or ADC reference divider networks in industrial control modules. IC Role / Device Role / Timing Role: Zener diode providing fixed reverse-bias voltage reference point independent of input variation. Use Value: ±2% tolerance and +0.045 %/°C TC enable <±1% total drift over -55°C to +125°C without external compensation. | Use Scenario: Clamping transient surges on 5 V logic rails in avionics data acquisition units. IC Role / Device Role / Timing Role: Shunt protector diverting excess energy above 6.2 V to ground during ESD or inductive kick events. Use Value: 500 mW rating and 3 Ω dynamic impedance ensure fast clamping response with minimal overshoot. |
| Temperature-Stable Biasing | Military Sensor Interface |
Use Scenario: Generating temperature-compensated bias current for op-amp input stages in precision instrumentation amplifiers. IC Role / Device Role / Timing Role: Zener voltage source feeding constant-current circuit where predictable TC enables passive compensation. Use Value: Positive TC matches typical transistor VBE drift, enabling cancellation in current mirror topologies. | Use Scenario: Voltage regulation in JANTX-qualified pressure transducer signal conditioning modules deployed in tactical vehicles. IC Role / Device Role / Timing Role: Primary DC reference in analog front-end powering sensor excitation and signal scaling. Use Value: MIL-PRF-19500/127 qualification and -65°C to +175°C operating range ensure field reliability under extreme thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N753A | Same 6.2 V nominal VZ but ±5% tolerance (vs. ±2% for 1N753C); identical package and qualification level. | Suitable where wider voltage tolerance is acceptable, e.g., non-critical biasing or coarse threshold detection. | Select 1N753A only if ±5% VZ variation meets system accuracy requirements and cost reduction is prioritized. |
| MMBZ5234BS | Surface-mount SOT-23 package; 6.2 V ±5%, 200 mW rating; no military qualification; RoHS-compliant only. | Used in space-constrained consumer or telecom designs where board area and reflow compatibility outweigh ruggedness needs. | Choose MMBZ5234BS only for commercial surface-mount assemblies requiring footprint reduction - not for high-reliability or through-hole legacy systems. |
Compared with 1N753A and MMBZ5234BS, the 1N753C uniquely combines ±2% tolerance, JANTX-level qualification, and DO-35 axial-leaded form factor - making it irreplaceable in mil-aero applications demanding both precision and proven reliability.
Availability
1N753C is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and military sensor interface applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1N753C 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 1N753C belongs to Microsemi's legacy MIL-PRF-19500/127-qualified Zener diode family, designed specifically for precision voltage regulation in defense, space, and industrial systems where parameter stability and qualification rigor are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N753C?
The 1N753C has a Zener voltage tolerance of ±2%, specified at 6.2 V with test current IZT = 20 mA. This tighter tolerance compared to the ±5% 1N753A variant enables higher accuracy in voltage reference and biasing applications where parameter drift must be minimized across temperature and life.
Is the 1N753C qualified to military standards?
Yes, the 1N753C is qualified to JANTX level per MIL-PRF-19500/127, including rigorous screening, lot traceability, and extended temperature operation from -65°C to +175°C. This qualification confirms suitability for high-reliability defense and aerospace systems where failure modes must be rigorously controlled.
What package type does the 1N753C use?
The 1N753C uses the DO-35 (DO-204AH) hermetically sealed axial-leaded glass package. It features a cathode band marking, tin-lead or RoHS-compliant matte-tin plating, and mechanical dimensions compliant with ASME Y14.5M - optimized for through-hole mounting and high-reliability thermal performance.
What is the dynamic impedance of the 1N753C and why does it matter?
The 1N753C has a dynamic impedance (ZZT) of 3 Ω at IZT = 20 mA. This low value ensures minimal output voltage variation under changing load conditions, directly improving regulation accuracy in feedback networks and reference circuits where stability against current fluctuations is critical.
Does the 1N753C have radiation hardness?
Yes, the 1N753C is inherently radiation-hardened as documented in Microsemi MicroNote 050. Its metallurgically bonded junction and glass package provide tolerance to total ionizing dose (TID) and displacement damage, supporting use in low-earth orbit (LEO) satellite subsystems and nuclear instrumentation where radiation-induced parameter shift must be avoided.
1N753C 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:
- ±2%
- 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)
1N753C FAQ
1.How can I place an order for 1N753C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N753C 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 1N753C reliable?
The price and inventory of 1N753C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N753C is usually 5 days.
3.What payment methods are accepted for 1N753C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N753C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N753C?
1N753C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N753C 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 1N753C?
For technical support, including 1N753C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N753C requirements.
6.How does Aetrix verify that 1N753C is sourced from the original manufacturer or authorized distributors?
All 1N753C 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 1N753C meets industry standards.
7.What is the process for return or replacement of 1N753C?
All 1N753C units undergo pre-shipment inspection (PSI). If there is an issue with 1N753C, 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 1N753C part is unused and in its original packaging.
Return procedure for 1N753C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N753C Tags
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BZT52C5V6T-7
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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