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Microchip Technology 1N5368AE3/TR13
- Part No.:
- 1N5368AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5368AE3/TR13.pdf
- Description:
- DIODE ZENER 47V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:5,374
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Product details
Overview
1N5368AE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 47 V, ±10% tolerance (A suffix), 25 Ω maximum dynamic impedance at 25 mA test current, and 210 A peak surge current rating. It operates from –65 °C to +150 °C and is used for primary voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5368AE3/TR13 datasheet, 1N5368AE3/TR13 pinout, 1N5368AE3/TR13 application, or 1N5368AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), steady-state power derating on FR4, reverse leakage at VR = 35.8 V, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device functions as a two-terminal voltage reference operating in reverse breakdown mode. Its regulation performance is defined by VZ = 47 V ±10%, dynamic impedance ZZ ≤ 25 Ω at IZT = 25 mA, and voltage regulation ΔVZ = 2.7 V between 10% and 50% of IZM.
It features a T-18 axial package with cathode band marking, void-free UL94V-0 epoxy body, and lead finish compatible with 260 °C/10 s soldering. Thermal resistance is specified as 25 °C/W junction-to-lead (3/8″ lead length) and 85 °C/W junction-to-ambient on FR4 with defined copper pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V ±10% - sets stable reference point across 5–210 mA operating range |
| Test Current (IZT) | 25 mA - standard bias point for VZ measurement and ZZ characterization |
| Max Dynamic Impedance (ZZ) | 25 Ω - limits output voltage variation under load current changes |
| Max Reverse Leakage (IR) | 0.5 μA @ 35.8 V - ensures low standby power loss in high-impedance bias networks |
| Peak Surge Current (IZSM) | 210 A (8.3 ms half-sine) - withstands transient overvoltage events without failure |
| Thermal Resistance (RθJL) | 25 °C/W - enables 5 W dissipation with ≤125 °C junction rise above 25 °C lead temperature |
| Operating Temperature | –65 °C to +150 °C - supports deployment in extended industrial and aerospace environments |
Pinout & Package
Package: T-18 axial-leaded plastic case (void-free UL94V-0 epoxy), cathode indicated by colored band. Leads are annealed matte-tin plated per MIL-STD-750 Method 2026, RoHS compliant (e3 suffix), weight 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; reverse-biased operation requires cathode at higher potential |
| Cathode | Regulated output node | Banded end; carries full Zener current and must be routed with adequate trace width for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 5 W Zener | Industry-standard footprint and reliability for axial-mount voltage regulation |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out prior to assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Robust handling in non-ESD-controlled environments without parametric shift |
| High surge current capability | 210 A peak (8.3 ms) - protects downstream circuitry during line transients |
| Stable regulation over temperature | ΔVZ = 2.7 V across 10–50% IZM - maintains accuracy under varying load conditions |
Applications
| Industrial Power Supply Reference | Overvoltage Clamp in DC-DC Converters |
|---|---|
Use Scenario: Provides stable 47 V reference for feedback loop error amplifiers in 48 V telecom rectifiers. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing precise setpoint for PWM controller. Use Value: Maintains ±10% output regulation despite input ripple and load step changes due to low ZZ and high IZM. | Use Scenario: Clamps transient spikes above 47 V on 36–42 V intermediate bus rails in isolated flyback converters. IC Role / Device Role / Timing Role: Shunt protection element diverting surge energy to ground before MOSFET drain overstress. Use Value: Absorbs 210 A surge (8.3 ms) without degradation, preventing catastrophic failure of switching FETs. |
| Programmable Voltage Monitor Threshold | Field-Serviceable Calibration Standard |
Use Scenario: Sets trip threshold for comparator-based brownout detection in programmable logic controllers. IC Role / Device Role / Timing Role: Precision analog reference input to comparator with hysteresis network. Use Value: Enables accurate 47 V ±10% trip point across –40 °C to +85 °C ambient with minimal drift. | Use Scenario: Serves as traceable calibration target for handheld multimeters and bench DMMs in field service kits. IC Role / Device Role / Timing Role: Portable, stable voltage standard with known tolerance and low tempco. Use Value: Delivers repeatable 47 V reading under battery-powered operation with <0.5 μA leakage at 35.8 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5368B | ±5% tolerance (B suffix) vs. ±10% (A suffix); identical VZ, ZZ, IZM, and package | Higher precision reference needed where tighter regulation stability is critical | Select 1N5368B when ±5% VZ tolerance is required; same thermal and surge specs apply |
| 1N5368CE3/TR13 | ±2% tolerance (C suffix); otherwise identical electrical and mechanical specs | Used where calibrated instrumentation-grade reference is mandated | Choose 1N5368CE3/TR13 for metrology-critical nodes requiring ±2% initial accuracy |
Compared with 1N5368AE3/TR13, the B-suffix variant improves voltage tolerance from ±10% to ±5% without layout or thermal changes, while the C-suffix version further tightens tolerance to ±2%-all share identical surge rating, thermal resistance, and mounting requirements.
Availability
1N5368AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, DC-DC converter protection circuits, and field-serviceable calibration standards requiring stable component supply and long-term obsolescence management.
Supply support for 1N5368AE3/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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N53xx series was designed as a JEDEC-registered family of 5 W axial Zeners delivering robust voltage regulation across 3.3–200 V with military-grade screening options and RoHS compliance.
FAQ
What is the Zener voltage tolerance for 1N5368AE3/TR13?
The 1N5368AE3/TR13 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in its part number. This means its measured VZ falls between 42.3 V and 51.7 V at 25 °C with 25 mA test current. The tolerance is guaranteed per JEDEC specification and applies across the full operating temperature range of –65 °C to +150 °C.
Does 1N5368AE3/TR13 require dry packing before PCB assembly?
No, the 1N5368AE3/TR13 does not require dry packing. It is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without baking. This eliminates pre-reflow moisture removal steps and reduces manufacturing complexity for high-volume production lines using this device.
What is the maximum steady-state power dissipation for 1N5368AE3/TR13 on a standard FR4 board?
When mounted on an FR4 PCB with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces, the 1N5368AE3/TR13 delivers 1.47 W steady-state power at 25 °C ambient. This value is derived from its 85 °C/W junction-to-ambient thermal resistance and must be derated linearly above 25 °C per the curve in Figure 1 of the Microsemi datasheet.
How is polarity marked on the 1N5368AE3/TR13 package?
The 1N5368AE3/TR13 uses a cathode band marking: the banded end is the cathode terminal and must be held at a higher potential than the anode for proper Zener operation. This marking is visible on the void-free thermosetting epoxy body and aligns with JEDEC T-18 outline standards. Reversing polarity will forward-bias the diode and prevent regulation.
What surge current rating does 1N5368AE3/TR13 support, and under what waveform conditions?
The 1N5368AE3/TR13 supports a peak surge current of 210 A, defined as the maximum non-recurrent half-sine wave with 8.3 ms duration. This rating reflects its ability to absorb transient energy without parametric shift or physical damage, making it suitable for clamping lightning-induced surges or inductive kickback in industrial control systems.
1N5368AE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±10%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 33.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- T-18
1N5368AE3/TR13 FAQ
1.How can I place an order for 1N5368AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5368AE3/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 1N5368AE3/TR13 reliable?
The price and inventory of 1N5368AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5368AE3/TR13 is usually 5 days.
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Once your 1N5368AE3/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 1N5368AE3/TR13?
For technical support, including 1N5368AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5368AE3/TR13 requirements.
6.How does Aetrix verify that 1N5368AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N5368AE3/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 1N5368AE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N5368AE3/TR13?
All 1N5368AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5368AE3/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 1N5368AE3/TR13 part is unused and in its original packaging.
Return procedure for 1N5368AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5368AE3/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
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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