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Microchip Technology 1N4751CE3/TR13
- Part No.:
- 1N4751CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4751CE3/TR13.pdf
- Description:
- DIODE ZENER 30V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,396
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Product details
Overview
1N4751CE3/TR13 from Microsemi is a 30 V, 1 W silicon Zener diode in DO-41 plastic package with ±2% voltage tolerance (C suffix), 8.5 mA test current (IZT), and 40 Ω dynamic impedance (ZZT) at IZT. It regulates voltage across industrial power supplies, reference circuits, and overvoltage protection stages where stable 30 V clamping is required.
For engineers reviewing the 1N4751CE3/TR13 datasheet, 1N4751CE3/TR13 pinout, 1N4751CE3/TR13 application, or 1N4751CE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (45 °C/W junction-to-lead), surge current rating (1000 mA), reverse leakage (5 µA @ 22.8 V), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates in reverse breakdown to maintain a stable 30 V reference across varying load currents (IZK = 0.25 mA to IZM = 150 mA at TA = 50 °C). Its sharp knee characteristic is verified by dual-point Zener impedance measurement per MicroNote 202, ensuring regulation stability under transient conditions.
The DO-41 package provides axial-leaded mounting with cathode band polarity marking, void-free UL94V-0 epoxy body, and thermal performance validated at 3/8" lead length (45 °C/W) and on FR4 PCB (105 °C/W), supporting reliable operation from –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30 V ±2% - precise clamping threshold for 28.6–31.4 V regulation window |
| Power Dissipation | 1.0 W at TL < 105 °C - supports continuous operation with 3/8" lead heatsinking |
| Test Current (IZT) | 8.5 mA - defined operating point for VZ and ZZT specification compliance |
| Dynamic Impedance (ZZT) | 40 Ω @ IZT - low AC impedance ensures minimal voltage variation under ripple current |
| Reverse Leakage (IR) | 5 µA @ 22.8 V - guarantees low standby power loss in high-impedance bias networks |
| Surge Current (ISM) | 1000 mA - withstands short-duration transients without degradation |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design with discrete lead heatsinking |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased input terminal | Connected to lower-potential node during Zener operation; carries full regulator current |
| Cathode | Regulated output terminal | Banded end; held at stable 30 V above anode when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables precision voltage references without post-calibration in analog sensing circuits |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to PCB assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling controls and ESD-protection infrastructure cost in manufacturing |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating and lead-free assembly compatibility |
| 1000 mA surge current rating | Provides robustness against line transients in DC power rail protection applications |
Applications
| Industrial Power Supply Regulation | Microcontroller Voltage Reference |
|---|---|
Use Scenario: Stabilizing +30 V rail in programmable logic controller (PLC) analog I/O modules. IC Role / Device Role / Timing Role: Zener diode providing fixed 30 V reference for DAC output scaling and ADC input conditioning. Use Value: ±2% tolerance ensures <±0.6 V error in 30 V reference, meeting 12-bit system accuracy requirements. | Use Scenario: Generating stable bias voltage for op-amp comparators monitoring battery charge state. IC Role / Device Role / Timing Role: Precision shunt regulator establishing accurate 30 V threshold for Li-ion cell overvoltage detection. Use Value: 40 Ω dynamic impedance minimizes voltage shift under sensor bias current variations, improving trip-point repeatability. |
| Overvoltage Protection Clamp | DC-DC Converter Feedback Divider |
Use Scenario: Clamping transient spikes on 24 V industrial bus lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Shunt protection element diverting surge energy above 30 V to ground before downstream IC damage. Use Value: 1000 mA surge rating handles 500 µs pulses per IEC 61000-4-5 Level 3 without parameter shift. | Use Scenario: Setting output voltage of isolated flyback converter via optocoupler feedback network. IC Role / Device Role / Timing Role: High-stability Zener defining upper divider node in TL431-based feedback loop. Use Value: Low 5 µA leakage at 22.8 V prevents significant current error in high-resistance feedback dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4751A | Same 30 V nominal, but ±5% tolerance (A suffix) and non-RoHS Sn/Pb plating | Acceptable where tighter tolerance not required and legacy Pb-based assembly used | Select 1N4751CE3/TR13 for RoHS compliance and precision; choose 1N4751A only for cost-sensitive, non-RoHS designs |
| MMSZ4708T1G | Surface-mount SOD-123 package, 30 V ±5%, 500 mW rating, 30 Ω ZZT @ 5 mA | Used in space-constrained PCBs where axial DO-41 leads are incompatible with layout | Choose MMSZ4708T1G for automated SMT assembly; retain 1N4751CE3/TR13 for through-hole reliability and higher surge margin |
Compared with 1N4751A and MMSZ4708T1G, the 1N4751CE3/TR13 delivers superior thermal robustness (1 W vs. 0.5 W), tighter voltage control (±2% vs. ±5%), and proven surge resilience (1000 mA), making it optimal for industrial-grade through-hole regulation where long-term stability and transient immunity are critical.
Availability
1N4751CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, microcontroller reference circuits, overvoltage protection clamps, and DC-DC converter feedback networks requiring stable component supply with full traceability and lifecycle management.
Supply support for 1N4751CE3/TR13 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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N47xxA series was engineered for precision voltage regulation in harsh-environment power systems, emphasizing thermal stability, surge resilience, and long-term parametric consistency under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N4751CE3/TR13?
The 1N4751CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number. This means its measured breakdown voltage at 8.5 mA test current falls within 28.6 V to 31.4 V at 25 °C lead temperature. This tighter tolerance supports precision reference applications where ±5% devices like the 1N4751A would introduce unacceptable error margins.
Does the 1N4751CE3/TR13 meet RoHS requirements?
Yes, the 1N4751CE3/TR13 complies with EU RoHS Directive 2011/65/EU. The "e3" suffix confirms RoHS-compliant matte-tin plating on leads per MIL-STD-750 Method 2026, and the void-free UL94V-0 epoxy body contains no restricted substances above threshold limits. Full compliance documentation is available upon request from Aetrix Electronics.
What is the maximum surge current rating for the 1N4751CE3/TR13?
The 1N4751CE3/TR13 is rated for a maximum surge current (ISM) of 1000 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25 °C ambient. This capability allows the device to absorb transient overvoltages-such as those from relay coil flyback or inductive load switching-without permanent parameter shift, making it suitable for rugged industrial environments.
How does the thermal resistance of the 1N4751CE3/TR13 affect PCB layout?
The 1N4751CE3/TR13 has a junction-to-lead thermal resistance of 45 °C/W when mounted with 3/8" (10 mm) lead length from the body. To maintain 1 W dissipation without exceeding 150 °C junction temperature, ensure adequate lead heatsinking-e.g., wide copper traces or thermal vias near solder joints. On FR4 with standard pads, junction-to-ambient resistance rises to 105 °C/W, requiring derating above 45 °C ambient.
Can the 1N4751CE3/TR13 be used in place of the 1N4751A?
Yes, the 1N4751CE3/TR13 is a direct functional upgrade to the 1N4751A, sharing identical 30 V nominal Zener voltage, DO-41 package, and 1 W power rating. However, it adds ±2% tolerance and RoHS-compliant plating. No PCB changes are needed, but verify that the tighter tolerance aligns with system reference accuracy requirements and that assembly processes support matte-tin reflow profiles.
1N4751CE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 22.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4751CE3/TR13 FAQ
1.How can I place an order for 1N4751CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4751CE3/TR13 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 1N4751CE3/TR13 reliable?
The price and inventory of 1N4751CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4751CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4751CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4751CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4751CE3/TR13?
1N4751CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4751CE3/TR13 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 1N4751CE3/TR13?
For technical support, including 1N4751CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4751CE3/TR13 requirements.
6.How does Aetrix verify that 1N4751CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4751CE3/TR13 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 1N4751CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4751CE3/TR13?
All 1N4751CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4751CE3/TR13, 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 1N4751CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N4751CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4751CE3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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