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Microchip Technology 1N5359AE3/TR12
- Part No.:
- 1N5359AE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5359AE3/TR12.pdf
- Description:
- DIODE ZENER 24V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,006
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Product details
Overview
1N5359AE3/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal zener voltage of 24 V, ±10% tolerance (A suffix), 50 mA test current, 3.5 Ω dynamic impedance at IZT, and maximum reverse current of 0.5 μA at 19.4 V. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N5359AE3/TR12 datasheet, 1N5359AE3/TR12 pinout, 1N5359AE3/TR12 application, or 1N5359AE3/TR12 equivalent, key selection criteria include its 24 V regulation accuracy, 5 W steady-state power capability at TL < 25°C, low 0.5 μA leakage at VR = 19.4 V, and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates as a voltage reference by maintaining a stable 24 V across its terminals under reverse bias when current exceeds the knee region (IZK ≥ 1 mA). Its 25 °C/W junction-to-lead thermal resistance enables 5 W dissipation with adequate heat sinking at 3/8″ lead length.
The 1N5359AE3/TR12 exhibits minimal voltage variation (ΔVZ = 0.55 V) between 10% and 50% of IZM, and withstands non-recurrent 8.3 ms half-sine surge currents up to 100 A, supporting transient suppression in DC rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±10% - defines regulated output voltage under specified test conditions (IZT = 50 mA) |
| Power Dissipation (Pd) | 5.0 W at TL < 25°C - maximum continuous power handling with 3/8″ lead length heat sinking |
| Test Current (IZT) | 50 mA - dc current at which VZ is measured; establishes operating point for regulation stability |
| Dynamic Impedance (ZZ) | 3.5 Ω at IZT - small-signal ac resistance determining voltage deviation under load current changes |
| Reverse Leakage (IR) | 0.5 μA at VR = 19.4 V - ensures minimal standby current in high-impedance reference paths |
| Voltage Regulation (ΔVZ) | 0.55 V - difference between VZ measured at 10% and 50% of IZM, indicating regulation linearity |
| Surge Current (IZSM) | 100 A (8.3 ms half-sine) - peak non-repetitive current capability for transient energy absorption |
Pinout & Package
Package: Axial-leaded T-18 plastic case (Void-free transfer molded thermosetting epoxy, UL94V-0 rated); cathode indicated by band; leads plated with RoHS-compliant annealed matte tin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Regulated output node | Banded end; supplies stable 24 V to load when reverse current flows through Zener region |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N53xxB series | Industry-standard footprint and electrical behavior enabling direct replacement in legacy designs |
| Moisture sensitivity Level 1 | No dry pack required before PCB assembly - simplifies handling and reduces manufacturing overhead |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Robust handling during manual assembly and automated placement without special ESD controls |
| Thermal resistance: 25 °C/W (junction-to-lead) | Enables full 5 W power dissipation with simple lead-length heat sinking - no heatsink needed for moderate duty cycles |
| e3 RoHS-compliant plating | Matte-tin termination meets lead-free soldering requirements and ensures reliable wetting at 260 °C for 10 s |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Precision +24 V rail stabilization in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Zener diode providing stable 24 V reference for ADC bias and op-amp feedback networks. Use Value: Maintains ≤±0.55 V regulation across 5–250 mA load current, ensuring <0.1% reference drift in 16-bit measurement systems. |
Use Scenario: Input rail clamping on 24 V DC industrial sensors exposed to inductive switching transients. IC Role / Device Role / Timing Role: Shunt regulator absorbing surge energy to protect downstream LDOs and microcontrollers. Use Value: Withstands 100 A (8.3 ms) surges while limiting voltage to ≤25.2 V - within safe operating area of 3.3 V logic interfaces. |
| DC-DC Converter Feedback Divider | Fieldbus Interface Voltage Clamp |
Use Scenario: Secondary-side voltage sensing in isolated 24 V flyback converters for factory automation drives. IC Role / Device Role / Timing Role: Zener referenced to optocoupler LED anode, setting precise output regulation threshold. Use Value: ±10% VZ tolerance accommodated by feedback loop gain margin; 3.5 Ω ZZ minimizes error contribution to overall ±2% output accuracy. |
Use Scenario: Protection of RS-485 transceiver inputs in harsh factory-floor communication nodes. IC Role / Device Role / Timing Role: Bidirectional clamp (with series diode) limiting common-mode voltage excursions on differential bus lines. Use Value: 0.5 μA IR at 19.4 V prevents loading of high-impedance bus receivers; 24 V VZ aligns with typical 24 V fieldbus supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5359B | Same 24 V VZ, but ±5% tolerance (B suffix) vs. ±10% (A suffix); identical package, thermal, and surge specs | Higher precision reference where tighter regulation is required; may increase cost without benefit in clamping roles | Select 1N5359B when reference accuracy dominates over cost; retain 1N5359AE3/TR12 for cost-sensitive overvoltage clamps |
| MMBZ5242BS | SOT-23 surface-mount package; 24 V ±5%, 225 mW Pd - not a power-equivalent replacement | Only suitable for low-power signal-level referencing; cannot replace 1N5359AE3/TR12 in 5 W applications | Use MMBZ5242BS only in space-constrained, low-current (<50 mA) designs; 1N5359AE3/TR12 remains mandatory for power regulation |
Compared with 1N5359B and MMBZ5242BS, the 1N5359AE3/TR12 uniquely balances 5 W power handling, axial-leaded mechanical robustness, ±10% cost-optimized tolerance, and tape-and-reel (TR12) manufacturability - making it the standard choice for industrial 24 V rail stabilization where precision is secondary to reliability and thermal resilience.
Availability
1N5359AE3/TR12 is available at Aetrix Electronics and suitable for industrial power supply reference, overvoltage protection clamp, and DC-DC converter feedback divider applications requiring stable component supply and long-term obsolescence management.
Supply support for 1N5359AE3/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 voltage regulation in harsh-environment power systems - emphasizing thermal resilience, surge immunity, and JEDEC-standard compatibility for long-lifecycle industrial deployments.
FAQ
What is the zener voltage tolerance of the 1N5359AE3/TR12?
The 1N5359AE3/TR12 has a zener voltage tolerance of ±10%, indicated by the "A" suffix in its part number. This means its actual VZ falls between 21.6 V and 26.4 V at 50 mA test current and 25°C lead temperature. The e3 suffix confirms RoHS compliance, and TR12 denotes tape-and-reel packaging with 12,000 units per reel.
Can the 1N5359AE3/TR12 be used in surface-mount designs?
No - the 1N5359AE3/TR12 uses an axial-leaded T-18 package and is not compatible with SMT assembly. For surface-mount equivalents, Microsemi offers the SMBJ5359B (SMB package, 5 W) or MMBZ5242BS (SOT-23, 225 mW), but neither matches the 1N5359AE3/TR12's power rating or leaded mechanical robustness.
What is the maximum surge current rating for the 1N5359AE3/TR12?
The 1N5359AE3/TR12 is rated for a maximum non-recurrent surge current (IZSM) of 100 A, defined as the peak of an 8.3 ms half-sine waveform. This rating assumes proper PCB layout with adequate copper area and is validated per Microsemi's test methodology - critical for protecting 24 V rails against inductive switch-off transients.
How does the thermal resistance affect the 1N5359AE3/TR12's power handling?
The 1N5359AE3/TR12 has a junction-to-lead thermal resistance of 25 °C/W at 3/8″ (10 mm) lead length. This allows full 5 W dissipation only when leads act as heat sinks; on FR4 board with 4 mm² copper pads, derating reduces usable power to 1.47 W at 25°C ambient - requiring careful thermal design in high-power applications.
Is the 1N5359AE3/TR12 suitable for automotive applications?
The 1N5359AE3/TR12 operates from –65°C to +150°C and meets MIL-STD-750 ESD testing, but it is not AEC-Q200 qualified. While used in some automotive-adjacent industrial systems, Microsemi does not certify it for under-hood automotive use; designers requiring AEC qualification should consider alternatives like the BZX85C24 or SMAZ24.
1N5359AE3/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:
- ±10%
- 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
1N5359AE3/TR12 FAQ
1.How can I place an order for 1N5359AE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5359AE3/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 1N5359AE3/TR12 reliable?
The price and inventory of 1N5359AE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5359AE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5359AE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5359AE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5359AE3/TR12?
1N5359AE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5359AE3/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 1N5359AE3/TR12?
For technical support, including 1N5359AE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5359AE3/TR12 requirements.
6.How does Aetrix verify that 1N5359AE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5359AE3/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 1N5359AE3/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5359AE3/TR12?
All 1N5359AE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5359AE3/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 1N5359AE3/TR12 part is unused and in its original packaging.
Return procedure for 1N5359AE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5359AE3/TR12 Tags
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MM5Z5V1ST1G
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