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Microchip Technology SMAJ4760CE3/TR13
- Part No.:
- SMAJ4760CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ4760CE3/TR13.pdf
- Description:
- DIODE ZENER 68V 2W DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,568
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Product details
Overview
SMAJ4760CE3/TR13 from Microsemi (now Microchip Technology) is a 2 W surface-mount silicon Zener diode with a nominal zener voltage of 68 V ±2%, 3.7 mA test current, 150 Ω dynamic impedance at IZT, and 2000 mA peak surge current rating. It operates from –55°C to +150°C and is used for overvoltage protection in DC power rails and transient suppression in industrial control inputs.
For engineers reviewing the SMAJ4760CE3/TR13 datasheet, SMAJ4760CE3/TR13 pinout, SMAJ4760CE3/TR13 application, or SMAJ4760CE3/TR13 equivalent, key selection criteria include its 2% voltage tolerance, DO-214AC package compatibility, 68 V regulation stability under 3.7 mA bias, and 2000 mA 1/120 s surge capability per JEDEC-compliant testing.
Technical Context
This Zener diode functions as a precision voltage reference and clamping device in shunt-regulator and transient-voltage-suppression circuits. Its 68 V breakdown voltage is specified at thermal equilibrium (90 s after dc current application), with knee impedance measured at 0.25 mA and dynamic impedance characterized at 3.7 mA using 60 Hz ac superposition.
The device meets MIL-STD-750 solderability requirements and is rated for 260°C/10 s reflow. Its DO-214AC package features a cathode band polarity indicator and is compatible with UL94V-0 flame-retardant epoxy mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 68 V ±2% - tight tolerance enables stable clamping in precision protection circuits |
| Test Current (IZT) | 3.7 mA - defines operating point for voltage regulation and impedance measurement |
| Dynamic Impedance (ZZT) | 150 Ω @ 3.7 mA - low enough to maintain regulation under moderate load variation |
| Peak Surge Current (IS) | 2000 mA @ 1/120 s - supports robust transient suppression per JEDEC test method |
| Power Dissipation (PAV) | 2.0 W - requires 4.0 mm² copper pads per terminal for thermal management |
| Operating Temperature | –55°C to +150°C - suitable for under-hood automotive and industrial environments |
| Reverse Leakage (IR) | 5 µA @ 51.7 V - ensures minimal standby power loss in high-impedance bias networks |
Pinout & Package
DO-214AC (SMAJ) surface-mount package with cathode indicated by a visible band on the body. Two-terminal device: anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction; reference node in reverse-biased clamp | Connected to lower-potential side of protected circuit (e.g., ground or return path) |
| Cathode | Current exit during forward conduction; high-side connection in Zener clamp | Connected to protected node (e.g., supply rail or signal line) to enable reverse-bias clamping |
Key Features
| Feature | Design Value |
|---|---|
| 2% Zener voltage tolerance ('C' suffix) | Enables tighter regulation margins than standard 5% or 10% parts, reducing design guardbanding |
| 2000 mA surge rating | Withstands high-energy transients per JEDEC ½-sine pulse test, extending protection lifetime |
| DO-214AC mechanical compatibility | Matches footprint and thermal pad layout of industry-standard SMA packages for drop-in PCB reuse |
| –55°C to +150°C operation | Supports deployment in extended-temperature environments without derating penalties below 100°C |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Clamping |
|---|---|
Use Scenario: Protecting 60–72 V DC input rails in programmable logic controllers against load-dump spikes. IC Role / Device Role / Timing Role: Shunt-clamp Zener diode placed between rail and ground to limit voltage excursion during 120 V/50 ms transients. Use Value: 68 V ±2% breakdown ensures clamping occurs within 2 V of nominal rail, preventing downstream IC damage while avoiding nuisance triggering. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure or temperature transducers) connected to 5 V microcontrollers in engine compartments. IC Role / Device Role / Timing Role: Reverse-biased Zener referenced to ground, clamping induced ESD or inductive kickback on signal lines. Use Value: 2000 mA surge rating absorbs >15 kV HBM ESD events without degradation, preserving signal integrity over vehicle lifetime. |
| Telecom Line Card Overvoltage Suppression | Renewable Energy Charge Controller Reference |
Use Scenario: Front-end protection for PoE-powered line cards exposed to lightning-induced surges on Ethernet pairs. IC Role / Device Role / Timing Role: Paired with TVS diodes in hybrid protection schemes, providing precise DC hold-off before avalanche activation. Use Value: 150 Ω dynamic impedance ensures predictable clamping voltage rise under fast-rising transients, enabling coordinated protection staging. | Use Scenario: Voltage reference in solar charge controller feedback loops regulating battery charging at 60–70 V nominal bus voltage. IC Role / Device Role / Timing Role: Stable shunt reference establishing accurate threshold for MPPT or overcharge cutoff comparators. Use Value: 2% tolerance and low knee impedance (measured at 0.25 mA) deliver <0.5% total error across temperature, improving charge efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4760A | Same 68 V nominal voltage but 5% tolerance; axial DO-41 package; 1.0 W rating | Lower power handling and looser tolerance limit use in non-critical, low-density through-hole designs | Select only if board space allows axial mounting and 5% regulation margin is acceptable |
| MMSZ4706ET1G | 68 V ±5%; SOD-123 package; 500 mW rating; 100 Ω ZZT @ 5 mA | Lower power and smaller footprint suit low-current bias/reference roles, not surge suppression | Prefer for space-constrained bias networks where 2000 mA surge capability is unnecessary |
Compared with 1N4760A and MMSZ4706ET1G, SMAJ4760CE3/TR13 uniquely combines 2% tolerance, 2 W dissipation, DO-214AC surface-mount form, and 2000 mA surge rating-making it the only option qualified for high-reliability, high-energy clamping in automated SMT production.
Availability
SMAJ4760CE3/TR13 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive sensor interface clamping, and telecom line card overvoltage suppression requiring stable component supply and full traceability.
Supply support for SMAJ4760CE3/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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components.
The SMAJ47xx series was designed for surface-mount transient voltage suppression and precision DC voltage regulation in harsh-environment applications demanding long-term stability and JEDEC-compliant surge performance.
FAQ
What is the Zener voltage tolerance of SMAJ4760CE3/TR13?
The 'C' suffix in SMAJ4760CE3/TR13 denotes a ±2% tolerance on the nominal 68 V zener voltage, verified per JEDEC test conditions at thermal equilibrium. This tighter tolerance reduces design uncertainty compared to standard 5% or 10% variants and is critical for applications requiring precise clamping thresholds. SMAJ4760CE3/TR13 maintains this specification across its full operating temperature range when properly heatsinked.
How does SMAJ4760CE3/TR13 differ from SMAJ4760A?
SMAJ4760CE3/TR13 and SMAJ4760A share identical 68 V nominal zener voltage and DO-214AC package, but SMAJ4760CE3/TR13 has ±2% tolerance ('C') versus ±5% for SMAJ4760A, and is supplied in tape-and-reel ('TR13') format optimized for SMT placement. Both meet the same 2 W power and 2000 mA surge ratings, but the tighter tolerance makes SMAJ4760CE3/TR13 preferable for precision regulation tasks.
What is the maximum steady-state power dissipation for SMAJ4760CE3/TR13?
SMAJ4760CE3/TR13 has a maximum steady-state power dissipation of 2.0 W at 25°C ambient, derating linearly to zero at 150°C when mounted on 4.0 mm² copper pads per terminal. At 100°C lead temperature, power must be reduced to 1.0 W. This rating directly governs continuous clamping duty cycle and thermal pad design-exceeding it risks parametric drift or catastrophic failure.
Can SMAJ4760CE3/TR13 be used in place of 1N4760A?
SMAJ4760CE3/TR13 is not a direct replacement for 1N4760A due to package and power differences: SMAJ4760CE3/TR13 uses DO-214AC (SMA) surface-mount packaging and handles 2 W, while 1N4760A is DO-41 axial and rated for 1.0 W. Though both regulate at 68 V, the higher surge rating (2000 mA vs. ~500 mA) and tighter tolerance of SMAJ4760CE3/TR13 require PCB redesign and thermal validation before substitution.
What is the significance of the 'E3' and 'TR13' suffixes in SMAJ4760CE3/TR13?
The 'E3' suffix indicates compliance with Microsemi's standard RoHS-6/lead-free termination finish, while 'TR13' specifies tape-and-reel packaging with 5000 units per reel-optimized for high-speed pick-and-place assembly. These suffixes confirm environmental compliance and manufacturing readiness; SMAJ4760CE3/TR13 is not offered in bulk or ammo-pack formats, and the E3 finish supports Pb-free reflow profiles up to 260°C for 10 seconds.
SMAJ4760CE3/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):
- 68 V
- Tolerance:
- ±2%
- Power - Max:
- 2 W
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 51.7 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
SMAJ4760CE3/TR13 FAQ
1.How can I place an order for SMAJ4760CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ4760CE3/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 SMAJ4760CE3/TR13 reliable?
The price and inventory of SMAJ4760CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ4760CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ4760CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ4760CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ4760CE3/TR13?
SMAJ4760CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ4760CE3/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 SMAJ4760CE3/TR13?
For technical support, including SMAJ4760CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ4760CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ4760CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ4760CE3/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 SMAJ4760CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ4760CE3/TR13?
All SMAJ4760CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ4760CE3/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 SMAJ4760CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ4760CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ4760CE3/TR13 Tags
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MM5Z5V1ST1G
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