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Microchip Technology SMAJ4759CE3/TR13
- Part No.:
- SMAJ4759CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ4759CE3/TR13.pdf
- Description:
- DIODE ZENER 62V 2W DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,292
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Product details
Overview
SMAJ4759CE3/TR13 from Microsemi (now Microchip Technology) is a 2 W surface-mount silicon Zener diode with nominal zener voltage 62 V ±2%, 4.0 mA test current, 125 Ω dynamic impedance at IZT, and 2000 mA peak surge current rating. It serves as a precision voltage reference and overvoltage clamp in DC power supply regulation circuits.
For engineers reviewing the SMAJ4759CE3/TR13 datasheet, SMAJ4759CE3/TR13 pinout, SMAJ4759CE3/TR13 application, or SMAJ4759CE3/TR13 equivalent, key selection criteria include its ±2% tolerance grade, DO-214AC package thermal resistance of 25°C/W, 150°C maximum junction temperature, and compliance with JEDEC 1N47xxA family electrical equivalence.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across load variations and line transients. Its 62 V nominal zener voltage is specified at 4.0 mA test current with 125 Ω dynamic impedance, ensuring low regulation error under moderate current changes.
The device supports high-reliability clamping in industrial power rails due to its 2000 mA non-repetitive surge current rating (½-sine wave, 1/120 s), 2.0 W steady-state power dissipation on 4.0 mm² copper pads, and operation from –55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±2% at 4.0 mA - enables precise 62 V reference or clamp with tight tolerance for feedback loops |
| Power Dissipation (PAV) | 2.0 W - requires minimum 4.0 mm² copper pad per terminal for thermal management |
| Dynamic Impedance (ZZT) | 125 Ω at IZT = 4.0 mA - limits output voltage variation under ±10% current change |
| Peak Surge Current (IS) | 2000 mA - withstands transient overvoltage events per ½-sine wave standard |
| Junction Temperature Range | –55°C to +150°C - suitable for under-hood automotive and industrial ambient conditions |
| Package | DO-214AC (SMAJ) - surface-mount footprint compatible with automated assembly and JEDEC 1N47xxA equivalents |
Pinout & Package
DO-214AC (SMAJ) package with cathode band marking polarity; two-terminal device with anode and cathode leads formed for surface-mount reflow soldering. Maximum solder temperature: 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential node in Zener operation | Terminal where conventional current flows into device during clamping or regulation |
| Cathode | Current exit point in forward bias; connected to higher-potential node in Zener operation | Marked by band; reverse-biased terminal that establishes 62 V reference relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter regulation than standard 5% or 10% parts, reducing need for external trimming |
| 2000 mA peak surge current rating | Provides robust transient suppression without derating in 24/48 V industrial control inputs |
| DO-214AC mechanical compatibility | Allows drop-in replacement of legacy 1N4759A in existing SMA footprints without layout change |
| UL94V-0 flame-retardant epoxy housing | Meets safety requirements for enclosed power supplies and industrial enclosures |
Applications
| Industrial Power Supply Regulation | Automotive ECU Voltage Reference |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated DC-DC converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener reference element setting precise 62 V threshold for optocoupler-based feedback loop. Use Value: ±2% tolerance ensures <±1.24 V error in reference voltage, improving output regulation accuracy over temperature. | Use Scenario: Clamping CAN bus power rail against load-dump transients in engine control units. IC Role / Device Role / Timing Role: Overvoltage protection device shunting surge energy to ground when rail exceeds 62 V. Use Value: 2000 mA surge rating handles ISO 7637-2 Pulse 5a without degradation, extending system lifetime. |
| Programmable Logic Controller Input Protection | Test Equipment Voltage Calibration Standard |
Use Scenario: Protecting 24 V digital input channels from field-wiring induced surges. IC Role / Device Role / Timing Role: Primary clamping diode placed before series current-limiting resistor and input buffer. Use Value: 2.0 W steady-state dissipation allows continuous operation during sustained overvoltage faults up to 62 V. | Use Scenario: Providing traceable 62 V reference in benchtop multimeter calibration fixtures. IC Role / Device Role / Timing Role: Precision voltage standard used with calibrated ammeter to verify DMM accuracy at 62 V range. Use Value: ±2% initial tolerance and low ZZT ensure <±1.5 V total uncertainty at 4.0 mA, meeting Class II calibration needs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4759A | Same 62 V nominal voltage but ±5% tolerance; DO-41 through-hole package | Requires PCB redesign for through-hole mounting; less precise reference | Select when cost sensitivity outweighs precision and SMT compatibility |
| MMSZ4709ET1G | 62 V ±5%, SOD-123 package, 500 mW power rating | Limited to low-energy clamping; unsuitable for 2 W continuous or high-surge scenarios | Select only for space-constrained, low-power signal-level protection |
Compared with 1N4759A and MMSZ4709ET1G, SMAJ4759CE3/TR13 uniquely combines ±2% tolerance, 2 W power handling, and DO-214AC SMT packaging-making it optimal for precision industrial clamping where both accuracy and thermal robustness are required.
Availability
SMAJ4759CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU voltage reference, and programmable logic controller input protection requiring stable component supply and long-term lifecycle support.
Supply support for SMAJ4759CE3/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 (acquired by Microchip Technology in 2018) designs high-reliability analog and discrete semiconductors for aerospace, defense, and industrial markets.
SMAJ47xxA series Zener diodes were developed for surface-mount voltage regulation and transient suppression in harsh-environment power systems demanding precision, surge resilience, and extended temperature operation.
FAQ
What is the zener voltage tolerance of SMAJ4759CE3/TR13?
The 'C' suffix in SMAJ4759CE3/TR13 denotes ±2% zener voltage tolerance at 25°C, verified at 4.0 mA test current. This tighter tolerance improves regulation accuracy compared to standard ±5% or ±10% variants and is critical for feedback networks where voltage drift directly impacts system performance. SMAJ4759CE3/TR13 maintains this specification across its full operating temperature range.
Is SMAJ4759CE3/TR13 compatible with JEDEC 1N4759A?
SMAJ4759CE3/TR13 is electrically equivalent to 1N4759A per manufacturer documentation, sharing identical 62 V nominal zener voltage and dynamic impedance characteristics. However, SMAJ4759CE3/TR13 uses DO-214AC surface-mount packaging versus 1N4759A's DO-41 through-hole form factor-requiring board layout adaptation but enabling automated assembly and improved thermal performance.
What is the maximum steady-state power dissipation for SMAJ4759CE3/TR13?
SMAJ4759CE3/TR13 has a steady-state power dissipation rating of 2.0 W at 25°C, measured with terminals mounted on 4.0 mm² copper pads. Power must be linearly derated above 100°C ambient, reaching zero at 150°C junction temperature. This rating defines safe continuous operation in regulated power supplies and clamping circuits without forced cooling.
Does SMAJ4759CE3/TR13 meet UL flammability standards?
Yes, SMAJ4759CE3/TR13 uses flame-retardant epoxy encapsulation rated UL94V-0, confirming resistance to ignition and vertical flame propagation. This certification supports use in enclosed industrial equipment, medical devices, and automotive modules where regulatory compliance with fire safety standards is mandatory.
What is the peak surge current rating for SMAJ4759CE3/TR13?
SMAJ4759CE3/TR13 is rated for 2000 mA peak surge current using a ½-sine wave pulse of 1/120 second duration at 25°C ambient. This capability enables reliable suppression of load-dump transients and lightning-induced surges in 24 V and 48 V systems without permanent degradation, provided the surge event remains within specified waveform parameters.
SMAJ4759CE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 62 V
- Tolerance:
- ±2%
- Power - Max:
- 2 W
- Impedance (Max) (Zzt):
- 125 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 47.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC
SMAJ4759CE3/TR13 FAQ
1.How can I place an order for SMAJ4759CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ4759CE3/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 SMAJ4759CE3/TR13 reliable?
The price and inventory of SMAJ4759CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ4759CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ4759CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ4759CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ4759CE3/TR13?
SMAJ4759CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ4759CE3/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 SMAJ4759CE3/TR13?
For technical support, including SMAJ4759CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ4759CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ4759CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ4759CE3/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 SMAJ4759CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ4759CE3/TR13?
All SMAJ4759CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ4759CE3/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 SMAJ4759CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ4759CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ4759CE3/TR13 Tags
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