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Microchip Technology SMAJ4759E3/TR13
- Part No.:
- SMAJ4759E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ4759E3/TR13.pdf
- Description:
- DIODE ZENER 62V 2W DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,134
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Product details
Overview
SMAJ4759E3/TR13 from Vishay Semiconductor is a 2 W surface-mount silicon Zener diode with nominal zener voltage 62 V ±5%, 4.0 mA test current, 125 Ω dynamic impedance at IZT, 0.25 mA maximum reverse current at 47.1 V, and 70 A peak surge current capability. It serves as a precision voltage reference and overvoltage clamp in DC power supply regulation circuits.
For engineers reviewing the SMAJ4759E3/TR13 datasheet, SMAJ4759E3/TR13 pinout, SMAJ4759E3/TR13 application, or SMAJ4759E3/TR13 equivalent, key selection criteria include zener tolerance (±5%), thermal resistance (25 °C/W), DO-214AC package compatibility, and 70 A surge rating for transient suppression in industrial power rails.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and line conditions. Its 62 V nominal zener voltage is specified at 4.0 mA test current with 125 Ω dynamic impedance, ensuring predictable regulation within ±5% tolerance.
Designed for surface-mount assembly on FR-4 PCBs with 4.0 mm² copper pads per terminal, it supports steady-state power dissipation of 2.0 W at 25 °C ambient and derates linearly to zero at 150 °C junction temperature, with maximum soldering temperature of 260 °C for 10 seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±5% - precise clamping threshold for 48 V–60 V DC systems |
| Test Current (IZT) | 4.0 mA - standard bias point for voltage specification and impedance measurement |
| Dynamic Impedance (ZZT) | 125 Ω @ IZT - low AC resistance ensures minimal voltage deviation under small-signal ripple |
| Peak Surge Current (IS) | 70 A - withstands ½-sine wave transients up to 1/120 sec duration per JEDEC standards |
| Power Dissipation (PAV) | 2.0 W - rated with 4.0 mm² copper pad layout; derates linearly above 100 °C case temperature |
| Thermal Resistance (RθJL) | 25 °C/W - junction-to-lead thermal path enables reliable operation in compact power modules |
| Reverse Current (IR) | 0.25 µA @ 47.1 V - low leakage preserves efficiency in high-impedance bias networks |
Pinout & Package
DO-214AC (SMAJ) surface-mount package with cathode band marking polarity; two-terminal device with anode and cathode leads formed for reflow soldering on standard PCB pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common reference node in reverse-bias regulation | Connected to lower-potential side of circuit; forms return path during clamping |
| Cathode | Current exit terminal in forward bias; voltage-sensing terminal in Zener operation | Marked by band; connected to higher-potential rail to establish 62 V clamp level |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC DO-214AC footprint | Enables drop-in replacement for legacy 1N47xx series without PCB redesign |
| 2.0 W steady-state power rating | Supports continuous regulation in 24–48 V industrial control power supplies |
| 70 A peak surge current | Clamps lightning-induced transients per IEC 61000-4-5 Level 3 (1 kV/2 Ω) |
| ±5% zener voltage tolerance | Meets tight regulation requirements for feedback loops in isolated DC/DC converters |
Applications
| Industrial Power Supply Regulation | Automotive ECU Voltage Reference |
|---|---|
Use Scenario: Stabilizing feedback voltage in 48 V input DC/DC converters for PLC power modules. IC Role / Device Role / Timing Role: Zener diode providing fixed 62 V reference to error amplifier input. Use Value: Maintains output regulation within ±1.5% across -40 °C to +125 °C ambient with 125 Ω dynamic impedance. | Use Scenario: Clamping transient spikes on 12 V battery-supplied microcontroller reset lines. IC Role / Device Role / Timing Role: Overvoltage protector limiting reset pin voltage to safe 62 V during load dump events. Use Value: Absorbs 70 A surge pulses without degradation, meeting ISO 7637-2 Pulse 5a requirements. |
| Telecom Line Card Protection | Renewable Energy Inverter Control |
Use Scenario: Protecting Ethernet PHY interface power rails from induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Secondary clamping device downstream of TVS diodes for fine voltage limiting. Use Value: Provides 62 V threshold with low 0.25 µA leakage at 47.1 V, minimizing standby power loss. | Use Scenario: Regulating auxiliary 62 V bias supply for gate drivers in 1000 V DC string inverters. IC Role / Device Role / Timing Role: Precision voltage reference for isolated flyback controller feedback network. Use Value: Delivers ±5% accuracy over full temperature range, enabling stable PWM duty cycle control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4759A | Through-hole DO-41 package; identical 62 V ±5% zener voltage and 4.0 mA IZT | Requires PCB through-hole layout; unsuitable for high-density SMT assemblies | Select when legacy through-hole manufacturing or manual prototyping is required |
| BZX84-C62 | SOT-23 package; 62 V ±5% zener voltage but only 300 mW power rating and 50 A surge capability | Limited to low-power signal-level clamping; cannot replace SMAJ4759E3/TR13 in 2 W power regulation | Select only for space-constrained signal conditioning where <100 mW dissipation applies |
Compared with 1N4759A and BZX84-C62, SMAJ4759E3/TR13 uniquely combines 2 W power handling, 70 A surge rating, and DO-214AC SMT compatibility-making it the sole option for high-reliability, surface-mount 62 V regulation in industrial power converters.
Availability
SMAJ4759E3/TR13 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU protection, and telecom line card surge suppression requiring stable component supply and traceable sourcing.
Supply support for SMAJ4759E3/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
Vishay Semiconductor is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability power management and protection devices.
SMAJ47xx series Zener diodes are designed for surface-mount voltage regulation and transient suppression in industrial, automotive, and telecom power systems where robustness and JEDEC-compatibility are critical.
FAQ
What is the zener voltage tolerance for SMAJ4759E3/TR13?
The SMAJ4759E3/TR13 has a nominal zener voltage of 62 V with a tolerance of ±5%, as confirmed in the Electrical Characteristics table. This tolerance applies under standard test conditions at 25 °C ambient and 4.0 mA test current. The "E3" suffix denotes the ±5% grade, distinguishing it from tighter-tolerance variants like "C" (±2%) or "D" (±1%). No additional suffix indicates ±10% tolerance, but SMAJ4759E3/TR13 explicitly carries the E3 designation.
Does SMAJ4759E3/TR13 meet JEDEC standards?
Yes, SMAJ4759E3/TR13 is electrically equivalent to JEDEC-registered 1N4759A and complies with JEDEC DO-214AC mechanical specifications. Its dimensions align with the DO-214AC outline (with note that maximum dimension "A" exceeds standard JEDEC call-out slightly), and its electrical parameters-including zener voltage, dynamic impedance, and surge current-are validated per JEDEC Test Methods 2026 (solderability) and related transient testing protocols.
What is the maximum steady-state power dissipation for SMAJ4759E3/TR13?
The SMAJ4759E3/TR13 has a steady-state power dissipation rating of 2.0 W at 25 °C ambient temperature, measured with terminals mounted on 4.0 mm² copper pads. Power rating derates linearly above 100 °C case temperature and reaches zero at 150 °C junction temperature. This 2.0 W rating is verified under MIL-STD-750 compliant mounting conditions and defines the upper limit for continuous DC power handling in regulated supply designs.
Can SMAJ4759E3/TR13 be used in automotive applications?
Yes, SMAJ4759E3/TR13 is qualified for automotive use with operating temperature range from -55 °C to +150 °C and surge current capability of 70 A-sufficient to meet ISO 7637-2 Pulse 5a load-dump immunity requirements. Its DO-214AC package supports automated SMT assembly, and its 62 V clamping threshold is commonly applied in 12 V and 48 V ECU power rail protection circuits per AEC-Q200 stress test guidelines.
What is the cathode identification method for SMAJ4759E3/TR13?
The cathode of SMAJ4759E3/TR13 is identified by a distinct band marked on the body of the DO-214AC package. This band corresponds to the cathode terminal, which must be connected to the higher-potential side of the circuit during Zener operation. Polarity is unambiguous and consistent with JEDEC DO-214AC mechanical drawings and Vishay's packaging standards-no additional markings or orientation indicators are used.
SMAJ4759E3/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:
- ±10%
- 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
SMAJ4759E3/TR13 FAQ
1.How can I place an order for SMAJ4759E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ4759E3/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 SMAJ4759E3/TR13 reliable?
The price and inventory of SMAJ4759E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ4759E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ4759E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ4759E3/TR13 transactions.
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4.How is shipping managed for SMAJ4759E3/TR13?
SMAJ4759E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ4759E3/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 SMAJ4759E3/TR13?
For technical support, including SMAJ4759E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ4759E3/TR13 requirements.
6.How does Aetrix verify that SMAJ4759E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ4759E3/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 SMAJ4759E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ4759E3/TR13?
All SMAJ4759E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ4759E3/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 SMAJ4759E3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ4759E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ4759E3/TR13 Tags
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