My Inquiry
My Account
Microchip Technology 1N5368AE3/TR12
- Part No.:
- 1N5368AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5368AE3/TR12.pdf
- Description:
- DIODE ZENER 47V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:8,666
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5368AE3/TR12 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 mA maximum Zener current when adequately heat-sunk. It operates from −65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in industrial power supplies.
For engineers reviewing the 1N5368AE3/TR12 datasheet, 1N5368AE3/TR12 pinout, 1N5368AE3/TR12 application, or 1N5368AE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (210 A), 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 regulator operating in reverse breakdown mode, with Zener voltage specified at 25 °C lead temperature and measured 40 ±10 ms after DC current application. Its low 25 °C/W junction-to-lead thermal resistance enables stable regulation at high continuous currents when mounted with ≥10 mm lead length from body.
It exhibits 0.80 V maximum voltage regulation (ΔVZ) between 10% and 50% of IZM, and 25 Ω maximum dynamic impedance (ZZ) at IZT = 25 mA - confirming tight regulation under varying load conditions within its 5 W power envelope.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 47 V nominal, ±10% tolerance - defines regulated output voltage window (42.3–51.7 V) under specified test conditions. |
| Test Current (IZT) | 25 mA - standardized bias point for measuring VZ and ZZ; ensures repeatable characterization across production lots. |
| Dynamic Impedance (ZZ) | 25 Ω max at 25 mA - indicates small-signal AC resistance; lower value improves regulation against load transients. |
| Max Zener Current (IZM) | 210 mA at TL = 25 °C - maximum continuous DC current before exceeding 5 W power limit; requires thermal management above ambient. |
| Reverse Leakage (IR) | 0.5 µA max at VR = 35.8 V - confirms low off-state conduction; critical for standby power integrity in voltage-clamp circuits. |
| Surge Current (IZSM) | 210 A peak (8.3 ms half-sine) - supports transient overvoltage suppression without failure in surge-prone environments. |
| Thermal Resistance | 25 °C/W junction-to-lead (3/8″ lead length) - enables direct thermal path to heatsink or chassis; dictates derating above 25 °C. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free UL94V-0 epoxy), cathode indicated by band; leads plated with RoHS-compliant annealed matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal at lower potential than cathode. |
| Cathode (banded end) | Regulated output node | Provides stable 47 V reference when reverse-biased; polarity must be observed to avoid forward conduction damage. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures mechanical and electrical interchangeability across qualified suppliers and legacy designs. |
| Moisture sensitivity Level 1 | No dry-pack required prior to assembly; simplifies handling and eliminates bake-out steps in SMT reflow prep. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands human-body-model ESD events without parameter shift - reduces need for handling controls in production. |
| e3 RoHS-compliant plating | Meets EU RoHS Directive 2011/65/EU and China RoHS; matte-tin finish ensures solderability and wire-bond compatibility. |
| High surge current capability | 210 A non-recurrent surge rating enables use in lightning/surge protection stages without external crowbar devices. |
Applications
| Industrial Power Supply Regulation | Overvoltage Clamp for DC Bus |
|---|---|
|
Use Scenario: Stabilizing reference voltage for feedback loops in 48 V telecom rectifiers and programmable DC supplies. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing precise 47 V setpoint for error amplifier input. Use Value: Maintains ±10% output regulation across −40 °C to +85 °C ambient with <0.8 V ΔVZ, reducing need for active trimming. |
Use Scenario: Protecting MOSFET gate drivers and controller ICs from transient overvoltage on 48 V DC distribution rails. IC Role / Device Role / Timing Role: Shunt clamping element that conducts only above 47 V, diverting surge energy to ground. Use Value: Absorbs 210 A surges (8.3 ms) without degradation, eliminating need for TVS diodes in cost-sensitive industrial motor drives. |
| Programmable Voltage Reference | Field-Replaceable Calibration Standard |
|
Use Scenario: Providing traceable 47 V reference in portable multimeters and benchtop DMM calibration modules. IC Role / Device Role / Timing Role: Primary voltage standard in resistor-divider networks where long-term stability and low tempco are critical. Use Value: Delivers <25 Ω ZZ and <0.5 µA IR at 35.8 V, enabling sub-0.1% measurement accuracy in handheld test equipment. |
Use Scenario: Serving as field-serviceable voltage reference in medical imaging power modules requiring recalibration after component replacement. IC Role / Device Role / Timing Role: Drop-in replaceable Zener with JEDEC-standard T-18 footprint and lead spacing for rapid maintenance. Use Value: Axial T-18 package allows hand-solder replacement without PCB rework; e3 marking ensures RoHS compliance in regulated healthcare systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5368B | Same 47 V nominal VZ, but ±5% tolerance (B suffix) and 25 mA IZT; identical package and thermal specs. | Higher precision required in feedback loops where tighter regulation window (44.7–49.4 V) reduces output variance. | Select 1N5368B when ±5% tolerance is needed; 1N5368AE3/TR12 remains optimal for cost-sensitive clamp or reference roles where ±10% is sufficient. |
| 1N5368CE3/TR13 | Same 47 V VZ, ±2% tolerance (C suffix), 25 mA IZT, and e3 RoHS marking; identical T-18 package and thermal resistance. | Used in metrology-grade references where <1% total uncertainty budget demands tighter initial tolerance and long-term stability. | Choose 1N5368CE3/TR13 for calibration-grade applications; 1N5368AE3/TR12 offers best value for general-purpose regulation where ±10% meets system spec. |
Compared with 1N5368B and 1N5368CE3/TR13, the 1N5368AE3/TR12 provides the broadest voltage window (±10%) at lowest unit cost while retaining identical surge rating, thermal performance, and RoHS compliance - making it ideal for non-critical clamping and mid-tier reference duties.
Availability
1N5368AE3/TR12 is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage clamp for DC bus, and programmable voltage reference applications requiring stable component supply and full traceability.
Supply support for 1N5368AE3/TR12 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 specifically for ruggedized 5 W Zener regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and JEDEC-standard interchangeability.
FAQ
What is the Zener voltage tolerance of the 1N5368AE3/TR12?
The 1N5368AE3/TR12 has a ±10% Zener voltage tolerance, indicated by the "A" suffix in its part number. This means its actual regulation voltage falls between 42.3 V and 51.7 V at 25 °C lead temperature with 25 mA test current. The tolerance is verified per JEDEC registration and applies across the full operating temperature range of −65 °C to +150 °C.
Does the 1N5368AE3/TR12 require dry packing before PCB assembly?
No, the 1N5368AE3/TR12 has IPC/JEDEC J-STD-020B moisture sensitivity Level 1, meaning it does not absorb significant moisture during normal factory handling and requires no dry pack or baking prior to reflow soldering. Its void-free UL94V-0 epoxy encapsulation ensures inherent moisture resistance.
What is the maximum surge current rating for the 1N5368AE3/TR12?
The 1N5368AE3/TR12 is rated for 210 A peak non-recurrent surge current (IZSM) in an 8.3 ms half-sine waveform. This rating is validated per Microsemi's test methodology and enables reliable use in transient voltage suppression circuits without additional series limiting components.
How is polarity marked on the 1N5368AE3/TR12?
The 1N5368AE3/TR12 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a higher potential than the unbanded (anode) end during reverse-bias operation. Forward voltage is ≤1.2 V at 1.0 A, but forward conduction is not its intended operating mode.
Is the 1N5368AE3/TR12 RoHS compliant?
Yes, the "e3" suffix in 1N5368AE3/TR12 explicitly denotes RoHS compliance per EU Directive 2011/65/EU. Its leads are plated with annealed matte tin per MIL-STD-750 Method 2026, and the epoxy body meets UL94V-0 flammability requirements.
1N5368AE3/TR12 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/TR12 FAQ
1.How can I place an order for 1N5368AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5368AE3/TR12 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/TR12 reliable?
The price and inventory of 1N5368AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5368AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5368AE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5368AE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5368AE3/TR12?
1N5368AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5368AE3/TR12 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/TR12?
For technical support, including 1N5368AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5368AE3/TR12 requirements.
6.How does Aetrix verify that 1N5368AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5368AE3/TR12 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/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5368AE3/TR12?
All 1N5368AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5368AE3/TR12, 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/TR12 part is unused and in its original packaging.
Return procedure for 1N5368AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5368AE3/TR12 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
