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Microchip Technology SMAJ4753CE3/TR13
- Part No.:
- SMAJ4753CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ4753CE3/TR13.pdf
- Description:
- DIODE ZENER 36V 2W DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,882
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Product details
Overview
SMAJ4753CE3/TR13 from Microsemi (now Microchip Technology) is a 36 V, 2 W surface-mount Zener diode in DO-214AC (SMA) package, rated for 125 mA maximum regulator current at 100°C case temperature, with 50 Ω dynamic impedance at 7.0 mA test current, used for precision voltage regulation and overvoltage protection in DC power rails.
For engineers reviewing the SMAJ4753CE3/TR13 datasheet, SMAJ4753CE3/TR13 pinout, SMAJ4753CE3/TR13 application, or SMAJ4753CE3/TR13 equivalent, key selection criteria include zener voltage tolerance (±2%), surge current capability (125 A), thermal resistance (25°C/W), and JEDEC DO-214AC mechanical compatibility.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and line conditions. It features a sharp knee characteristic verified by dual-point Zener impedance measurement per Note 2, and supports high-energy transient suppression via ½-sine wave surge testing per Note 3.
Designed for surface-mount assembly with flame-retardant UL94V-0 epoxy, it uses a cathode band for polarity identification and complies with MIL-STD-750 solderability requirements. Maximum junction temperature is 150°C with derating linearly from 100°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±2% at 7.0 mA - ensures tight regulation tolerance for feedback loops in SMPS |
| Power Dissipation (PAV) | 2.0 W on 4.0 mm² copper pads - defines continuous thermal limit in PCB layout |
| Dynamic Impedance (ZZT) | 50 Ω @ 7.0 mA - determines output voltage variation under load transients |
| Reverse Leakage (IR) | 5 µA @ 27.4 V - confirms low standby current in high-impedance bias networks |
| Surge Current (IS) | 125 A (½-sine, 1/120 s) - validates robustness against ESD and lightning-induced transients |
| Junction Temperature Range | –55°C to +150°C - enables operation in automotive under-hood and industrial control environments |
| Thermal Resistance (RθJL) | 25°C/W - allows accurate junction temperature estimation from pad temperature |
Pinout & Package
DO-214AC (SMA) surface-mount package with molded plastic body, flat handling surface for pick-and-place accuracy, and cathode band marking on one end. Terminals are solderable per MIL-STD-750 Method 2026; max soldering temperature is 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage reference node | Connected to lower-potential side of regulated rail; carries forward current during non-regulation states |
| Cathode | Zener breakdown terminal / regulated output node | Connected to higher-potential side; maintains 36 V reference relative to anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| 2% Zener voltage tolerance (C suffix) | Enables tighter feedback loop stability vs. standard 5% or 10% parts in precision references |
| 125 A peak surge rating | Provides single-event transient immunity exceeding IEC 61000-4-5 Level 4 requirements |
| JEDEC DO-214AC mechanical compliance | Ensures compatibility with existing SMA footprint designs and automated assembly tooling |
| UL94V-0 flame-retardant epoxy | Meets safety standards for enclosed industrial and medical power supplies |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener reference for TL431-like shunt regulator circuitry. Use Value: 36 V ±2% tolerance ensures ±0.72 V absolute reference accuracy, minimizing output drift across temperature. | Use Scenario: Providing stable excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric ADC biasing. Use Value: 50 Ω dynamic impedance limits reference error to <0.35 mV per 7 mA load step, preserving 16-bit measurement integrity. |
| Automotive ECU Overvoltage Clamp | Telecom Line Card Surge Protection |
Use Scenario: Clamping 12 V battery rail transients in engine control units exposed to load dump. IC Role / Device Role / Timing Role: Primary overvoltage clamp protecting downstream LDOs and microcontrollers. Use Value: 125 A surge rating handles ISO 7637-2 Pulse 5a (75 V/100 ms) without degradation, extending system lifetime. | Use Scenario: Secondary protection stage after gas discharge tube (GDT) in DSL line interface cards. IC Role / Device Role / Timing Role: Fast-response clamping device limiting residual voltage to protected PHY ICs. Use Value: Sharp knee characteristic (verified per Note 2) ensures clamping begins within 10 ns of threshold crossing, reducing let-through energy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4753A | Through-hole DO-41 package; 5% voltage tolerance; same 36 V nominal rating | Requires PCB through-hole rework; less suitable for high-density SMT layouts | Select when legacy through-hole design or manual prototyping is required |
| BZX84-C36 | SOT-23 package; 36 V ±5%; 300 mW power rating; higher ZZT (90 Ω) | Limited to low-power biasing; insufficient for 2 W regulation or surge clamping | Select only for space-constrained low-current references, not for power regulation |
Compared with SMAJ4753CE3/TR13, 1N4753A offers identical electrical specs but requires board redesign for through-hole mounting, while BZX84-C36 sacrifices power handling and regulation precision for miniaturization-neither is pin-compatible, and both demand careful thermal and layout reassessment.
Availability
SMAJ4753CE3/TR13 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, automotive ECUs, and telecom line protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ4753CE3/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 developed for ruggedized surface-mount voltage regulation and transient suppression in aerospace, defense, and industrial systems where thermal stability and surge resilience are critical.
FAQ
What is the Zener voltage tolerance for SMAJ4753CE3/TR13?
The 'C' suffix in SMAJ4753CE3/TR13 denotes a ±2% Zener voltage tolerance at 36 V nominal, verified per Microsemi's dual-point impedance test method (Note 2). This tighter tolerance improves regulation accuracy in closed-loop feedback circuits compared to standard 5% or 10% variants like SMAJ4753A or SMAJ4753.
Does SMAJ4753CE3/TR13 support high-surge transient suppression?
Yes, SMAJ4753CE3/TR13 is rated for 125 A peak surge current using a ½-sine wave pulse of 1/120 second duration (per Note 3), making it suitable for IEC 61000-4-5 Level 4 and ISO 7637-2 Pulse 5a transient suppression. Its 2 W steady-state power rating ensures sustained clamping without thermal runaway.
What is the thermal resistance of SMAJ4753CE3/TR13, and how is it measured?
SMAJ4753CE3/TR13 has a junction-to-lead thermal resistance (RθJL) of 25°C/W, measured with the device mounted on 4.0 mm² copper pads per Note 3. This value enables direct calculation of junction temperature rise above lead temperature, supporting thermal design validation in compact power layouts.
Is SMAJ4753CE3/TR13 compatible with standard DO-214AC footprints?
Yes, SMAJ4753CE3/TR13 uses the JEDEC DO-214AC (SMA) package with documented dimensions matching industry-standard SMA land patterns. Note 1 confirms its mechanical similarity to DO-214AC, though maximum dimension 'A' (2.92 mm) exceeds the standard JEDEC callout (2.66 mm) slightly-verify pad clearance in high-density layouts.
What is the maximum reverse leakage current for SMAJ4753CE3/TR13?
SMAJ4753CE3/TR13 specifies a maximum reverse leakage current (IR) of 5 µA at 27.4 V (75% of VZ), per the Electrical Characteristics table. This low leakage supports high-impedance bias networks and minimizes quiescent power loss in always-on monitoring circuits.
SMAJ4753CE3/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):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 2 W
- Impedance (Max) (Zzt):
- 50 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 27.4 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
SMAJ4753CE3/TR13 FAQ
1.How can I place an order for SMAJ4753CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ4753CE3/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 SMAJ4753CE3/TR13 reliable?
The price and inventory of SMAJ4753CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ4753CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ4753CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ4753CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ4753CE3/TR13?
SMAJ4753CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ4753CE3/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 SMAJ4753CE3/TR13?
For technical support, including SMAJ4753CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ4753CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ4753CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ4753CE3/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 SMAJ4753CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ4753CE3/TR13?
All SMAJ4753CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ4753CE3/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 SMAJ4753CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ4753CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ4753CE3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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