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Microchip Technology 1N5359C/TR12
- Part No.:
- 1N5359C/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5359C/TR12.pdf
- Description:
- DIODE ZENER 24V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,005
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Product details
Overview
1N5359C/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 24 V, ±2% tolerance (C suffix), 50 mA test current (IZT), 3.5 Ω dynamic impedance (ZZ), and maximum reverse current of 0.5 μA at 19.4 V (VR). 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 1N5359C/TR12 datasheet, 1N5359C/TR12 pinout, 1N5359C/TR12 application, or 1N5359C/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, where stable 24 V output is maintained across a wide current range (10–100 mA) and temperature span (–65 °C to +150 °C). Its low dynamic impedance (3.5 Ω) ensures minimal voltage deviation under load transients.
The 1N5359C/TR12 uses a void-free thermosetting epoxy T-18 package with cathode band marking, rated for 5.0 W steady-state dissipation at 25 °C lead temperature (3/8″ from body), and exhibits 0.55 V voltage regulation (ΔVZ) between 10% and 50% of IZM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±2% - precise regulation point for feedback networks requiring tight voltage stability |
| Test Current (IZT) | 50 mA - operating point at which VZ and ZZ are specified; defines typical bias condition |
| Dynamic Impedance (ZZ) | 3.5 Ω - low AC resistance ensures minimal output voltage shift during current variations |
| Max Reverse Current (IR) | 0.5 μA at VR = 19.4 V - confirms sharp knee and low leakage below breakdown threshold |
| Max Regulator Current (IZM) | 100 mA - maximum DC current at which 5 W power dissipation is sustained with adequate heatsinking |
| Voltage Regulation (ΔVZ) | 0.55 V - difference between VZ measured at 10% and 50% of IZM; quantifies regulation linearity |
| Surge Current (IZSM) | 100 A (8.3 ms half-sine) - withstands transient overloads without degradation |
Pinout & Package
T-18 axial-leaded plastic package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026; weight: 0.7 g; moisture sensitivity level: IPC/JEDEC J-STD-020B Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-voltage side in regulation mode | Connected to circuit ground or lower potential node when used as shunt regulator |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to unregulated input rail; delivers stable 24 V to load or feedback divider |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables high-accuracy voltage references without external trimming in feedback circuits |
| 25 °C/W junction-to-lead thermal resistance | Supports 5 W continuous operation with simple 3/8″ lead heatsinking-no PCB copper area required |
| RoHS-compliant e3 marking | Meets environmental compliance requirements for industrial and telecom equipment without derating |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions during assembly and reduces field failure risk |
| 100 A surge current rating (8.3 ms) | Protects downstream circuitry against line transients and inductive kickback without external TVS |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Stabilizing error amplifier input in isolated flyback or forward converter feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 24 V reference for optocoupler-driven control IC. Use Value: ±2% tolerance ensures consistent output regulation across production batches without calibration. |
Use Scenario: Generating stable excitation voltage for 4–20 mA current-loop pressure sensors. IC Role / Device Role / Timing Role: Precision voltage source powering sensor bridge and signal conditioning circuitry. Use Value: Low ΔVZ (0.55 V) minimizes drift-induced measurement error over temperature and load variation. |
| Overvoltage Clamp for 24 V Rail | Programmable Threshold Detector |
Use Scenario: Protecting microcontroller I/O pins and analog front-ends on 24 V industrial bus nodes. IC Role / Device Role / Timing Role: Passive clamp limiting rail voltage to 24.5 V during surge events. Use Value: 100 A surge rating absorbs 8.3 ms transients without degradation-replaces discrete TVS in cost-sensitive designs. |
Use Scenario: Setting trip point for comparator-based battery undervoltage lockout in backup systems. IC Role / Device Role / Timing Role: Stable 24 V reference compared against monitored rail to trigger shutdown. Use Value: Tight 2% tolerance ensures predictable activation threshold across temperature and unit variance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B/TR12 | ±5% tolerance (B suffix); same VZ, IZT, ZZ, IZM, and package | Acceptable where tighter regulation not required; lower cost in high-volume industrial controls | Select 1N5359B/TR12 when system-level calibration compensates for wider tolerance band |
| MMBZ5248BS-7-F | Surface-mount SOD-123 package; 24 V ±5%; 200 mW rating; 30 Ω ZZ | Limited to low-power signal-level clamping; unsuitable for 5 W regulation or high-current surges | Choose MMBZ5248BS-7-F only for space-constrained PCBs where power dissipation ≤200 mW |
Compared with 1N5359B/TR12 and MMBZ5248BS-7-F, the 1N5359C/TR12 uniquely delivers ±2% regulation accuracy at full 5 W dissipation in an axial-leaded package-enabling high-reliability, no-calibration power supply designs without layout redesign.
Availability
1N5359C/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage protection circuits, and programmable threshold detectors requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for 1N5359C/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 1N53xxB/C series was designed for robust, high-power voltage regulation in harsh environments-emphasizing thermal resilience, surge immunity, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5359C/TR12?
The 1N5359C/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix per Microsemi's specification sheet. This means its nominal 24 V regulation point falls within 23.52 V to 24.48 V at 25 °C with 50 mA test current. This tighter tolerance supports precision feedback and reference applications where calibration is impractical.
Can the 1N5359C/TR12 be used without a heatsink?
Yes-the 1N5359C/TR12 can dissipate up to 5 W continuously when mounted with 3/8″ (10 mm) lead length from the body, leveraging its 25 °C/W junction-to-lead thermal resistance. No PCB copper pad or external heatsink is required for full-rated operation, though ambient temperature derating applies above 25 °C.
What does the "TR12" suffix indicate on the 1N5359C/TR12?
The "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, with 12,000 units per reel. This format supports automated SMT placement despite the device being axial-leaded-enabling high-throughput assembly while maintaining compatibility with legacy through-hole designs via manual or selective soldering.
How does the 1N5359C/TR12 perform under surge conditions?
The 1N5359C/TR12 is rated for 100 A peak surge current (8.3 ms half-sine waveform), verified per JEDEC standards. Its robust construction and low thermal resistance allow it to absorb repetitive transients without parameter shift-making it suitable for protecting 24 V rails in motor drives and PLC I/O modules.
Is the 1N5359C/TR12 RoHS compliant?
Yes-the 1N5359C/TR12 carries the "e3" designation, confirming RoHS compliance with lead-free matte-tin plating per MIL-STD-750 Method 2026. It meets EU Directive 2011/65/EU and is compatible with standard 260 °C, 10-second reflow profiles without reliability degradation.
1N5359C/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
1N5359C/TR12 FAQ
1.How can I place an order for 1N5359C/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5359C/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 1N5359C/TR12 reliable?
The price and inventory of 1N5359C/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5359C/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5359C/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5359C/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5359C/TR12?
1N5359C/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5359C/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 1N5359C/TR12?
For technical support, including 1N5359C/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5359C/TR12 requirements.
6.How does Aetrix verify that 1N5359C/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5359C/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 1N5359C/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5359C/TR12?
All 1N5359C/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5359C/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 1N5359C/TR12 part is unused and in its original packaging.
Return procedure for 1N5359C/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5359C/TR12 Tags
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MMSZ4682T1G
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MM5Z5V1ST1G
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