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Microchip Technology 1N5359CE3/TR12
- Part No.:
- 1N5359CE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5359CE3/TR12.pdf
- Description:
- DIODE ZENER 24V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:2,337
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Product details
Overview
1N5359CE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 24 V, ±2% tolerance (C suffix), 3.5 Ω dynamic impedance at 50 mA test current, and maximum reverse current of 0.5 μA at 18.2 V. It operates from −65 °C to +150 °C and is used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5359CE3/TR12 datasheet, 1N5359CE3/TR12 pinout, 1N5359CE3/TR12 application, or 1N5359CE3/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (100 A), voltage regulation (ΔVZ = 0.55 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. Its Zener voltage is specified at 24 V ±2% under 50 mA DC test current (IZT), with low dynamic impedance (3.5 Ω) ensuring stable regulation across load variations. The 25 °C/W thermal resistance enables reliable 5 W dissipation when leads are mounted at 3/8″ (10 mm) from body.
It exhibits minimal voltage drift versus current-ΔVZ = 0.55 V between 10% and 50% of IZM-and withstands non-repetitive 8.3 ms half-sine surge currents up to 100 A. Polarity is marked by cathode band; operation requires cathode positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±2% at 50 mA - ensures tight regulation for feedback references in switching supplies |
| Power Dissipation | 5.0 W at TL = 25 °C - supports high-current clamping with adequate heatsinking |
| Dynamic Impedance (ZZ) | 3.5 Ω at IZT = 50 mA - low AC impedance maintains stable output under dynamic load changes |
| Max Reverse Current | 0.5 μA at VR = 18.2 V - guarantees low leakage in standby and precision bias circuits |
| Thermal Resistance | 25 °C/W junction-to-lead - enables predictable thermal design with standard lead mounting |
| Surge Current (IZSM) | 100 A (8.3 ms half-sine) - provides robust transient overvoltage suppression |
| Voltage Regulation (ΔVZ) | 0.55 V - difference between VZ measured at 10% and 50% of IZM, indicating line regulation fidelity |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode identified by color band. Leads are annealed matte-tin plated (RoHS compliant, e3 suffix), solderable per MIL-STD-750 Method 2026. Weight: 0.7 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal negative relative to cathode |
| Cathode | Regulated output node | Banded end; connected to regulated rail or error amplifier input; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables precise feedback without external trimming in 24 V SMPS designs |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to assembly |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates ESD protection circuitry in board layout |
| Steady-state power: 1.47 W on FR4 | Validated thermal performance on standard 1 oz Cu PCB with 4 mm² pads and 1 mm × 25 mm trace |
| Forward voltage ≤1.2 V @ 1.0 A | Ensures low conduction loss if forward-biased during fault conditions or startup |
Applications
| Switching Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Precision 24 V reference source for TL431-like comparator inputs or direct feedback to PWM controller. Use Value: ±2% tolerance and 0.55 V ΔVZ minimize output voltage drift across line/load/temperature. | Use Scenario: Clamping transient spikes on 24 V DC rails caused by inductive switching or ESD events. IC Role / Device Role / Timing Role: Two-terminal shunt protector that conducts only above 24 V, diverting excess energy to ground. Use Value: 100 A surge rating and 5 W steady-state dissipation handle repetitive transients without degradation. |
| Industrial Sensor Excitation | Programmable Reference Source |
Use Scenario: Providing stable excitation voltage to 4–20 mA current-loop sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift, low-noise 24 V bias source replacing higher-cost IC references. Use Value: 0.5 μA max reverse leakage at 18.2 V prevents loading errors in high-impedance sensor interfaces. | Use Scenario: Setting accurate thresholds in comparator-based level detection or window monitors. IC Role / Device Role / Timing Role: Fixed-voltage node defining upper trip point in dual-threshold circuits. Use Value: Tight 2% tolerance and low dynamic impedance ensure repeatable switching points across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B | Same 24 V nominal voltage but ±5% tolerance (B suffix); otherwise identical electrical specs and package | Acceptable where tighter tolerance not required; lower cost in volume production | Select 1N5359B for cost-sensitive industrial controls where ±5% regulation suffices |
| MMBZ5248BS | Surface-mount SOD-123 package; 24 V ±5%; 0.225 W power rating; 200 Ω ZZ at 10 mA | Not suitable for 5 W dissipation; limited to low-power bias/reference roles | Choose MMBZ5248BS only for space-constrained PCBs with sub-250 mW load requirements |
Compared with 1N5359B and MMBZ5248BS, the 1N5359CE3/TR12 delivers superior thermal performance (25 °C/W vs. >300 °C/W), higher surge capability (100 A vs. <1 A), and tighter voltage control-making it the sole option for robust 24 V regulation in power electronics.
Availability
1N5359CE3/TR12 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, and industrial sensor excitation requiring stable component supply and RoHS-compliant sourcing.
Supply support for 1N5359CE3/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, mixed-signal, and RF solutions for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for high-stability, high-power Zener regulation in harsh-environment power systems-emphasizing thermal robustness, surge resilience, and long-term parametric consistency.
FAQ
What is the Zener voltage tolerance of the 1N5359CE3/TR12?
The 1N5359CE3/TR12 has a Zener voltage tolerance of ±2%, indicated by the "C" suffix in its part number. This means its nominal 24 V regulation falls within 23.52 V to 24.48 V at 50 mA test current and 25 °C lead temperature. This tight tolerance supports precision feedback in regulated power supplies where output accuracy is critical.
Does the 1N5359CE3/TR12 require dry packing before reflow soldering?
No, the 1N5359CE3/TR12 does not require dry packing. It carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification, meaning it can be stored indefinitely at ambient conditions without desiccant or baking. This simplifies manufacturing logistics and eliminates pre-reflow bake steps for the 1N5359CE3/TR12.
What is the maximum surge current rating for the 1N5359CE3/TR12?
The 1N5359CE3/TR12 is rated for a maximum non-repetitive surge current (IZSM) of 100 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating reflects its ability to absorb transient overvoltages without failure, making the 1N5359CE3/TR12 suitable for clamping inductive kickback and lightning-induced surges in 24 V systems.
How is polarity marked on the 1N5359CE3/TR12?
The 1N5359CE3/TR12 uses a cathode band to indicate polarity: the banded end is the cathode and must be held positive relative to the unmarked (anode) end during normal Zener operation. This marking aligns with JEDEC-standard axial diode conventions and is visible on the black epoxy body of the 1N5359CE3/TR12.
What is the thermal resistance of the 1N5359CE3/TR12, and how is it measured?
The 1N5359CE3/TR12 has a junction-to-lead thermal resistance of 25 °C/W, measured with 3/8″ (10 mm) lead length from the body. This value enables accurate junction temperature estimation during 5 W operation and informs heatsink or PCB copper area requirements. The 1N5359CE3/TR12 also specifies 85 °C/W junction-to-ambient on FR4, validating its use in standard PCB layouts.
1N5359CE3/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):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 17.3 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
1N5359CE3/TR12 FAQ
1.How can I place an order for 1N5359CE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5359CE3/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 1N5359CE3/TR12 reliable?
The price and inventory of 1N5359CE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5359CE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5359CE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5359CE3/TR12 transactions.
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4.How is shipping managed for 1N5359CE3/TR12?
1N5359CE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5359CE3/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 1N5359CE3/TR12?
For technical support, including 1N5359CE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5359CE3/TR12 requirements.
6.How does Aetrix verify that 1N5359CE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5359CE3/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 1N5359CE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5359CE3/TR12?
All 1N5359CE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5359CE3/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 1N5359CE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5359CE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5359CE3/TR12 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
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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SMAZ12-13-F
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