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Microchip Technology 1N5360/TR12
- Part No.:
- 1N5360/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5360/TR12.pdf
- Description:
- DIODE ZENER 25V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:4,455
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Product details
Overview
1N5360/TR12 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 25 V, ±5% tolerance (B suffix), 4.0 Ω maximum dynamic impedance at 50 mA test current, 110 mA maximum Zener current when adequately heat-sunk, and operates from –65 °C to +150 °C. It delivers stable voltage reference in power supply feedback loops, overvoltage clamping circuits, and precision biasing networks.
For engineers reviewing the 1N5360/TR12 datasheet, 1N5360/TR12 pinout, 1N5360/TR12 application, or 1N5360/TR12 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (110 A), reverse leakage (<0.5 µA at 19 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. Its Zener voltage is specified at 25 °C with 50 mA test current (IZT), and exhibits 4.0 Ω dynamic impedance (ZZ) under those conditions. Voltage regulation (ΔVZ) is 0.55 V - measured as the difference between voltages at 10% and 50% of IZM.
The diode features a T-18 axial package with cathode band marking, void-free UL94V-0 epoxy body, and tin-lead or RoHS-compliant annealed matte-tin leads. Thermal resistance is 25 °C/W junction-to-lead at 3/8″ (10 mm) lead length, enabling 5 W dissipation at TL ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25 V ±5% - precise reference for feedback and clamping at nominal 25 V |
| Test Current (IZT) | 50 mA - standard operating point for VZ specification and impedance measurement |
| Dynamic Impedance (ZZ) | 4.0 Ω max at IZT - low AC resistance ensures minimal voltage shift under load variation |
| Max Reverse Current (IR) | <0.5 µA at VR = 19 V - negligible leakage below knee, critical for low-power bias stability |
| Max Zener Current (IZM) | 110 mA - maximum continuous DC current at TL = 25 °C with adequate heatsinking |
| Surge Current (IZSM) | 110 A peak - withstands non-repetitive 8.3 ms half-sine transients without failure |
| Voltage Regulation (ΔVZ) | 0.55 V - difference between VZ at 11 mA and 55 mA, indicating regulation linearity |
Pinout & Package
Package: T-18 axial-leaded plastic encapsulated case per JEDEC DO-204AL. Cathode identified by single black band; operated with banded end positive relative to unbanded end. Moisture sensitivity level 1 - no dry pack required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased terminal during regulation | Connected to lower-potential node; carries full Zener current in clamp/regulator mode |
| Cathode | Zener breakdown terminal | Banded end; connected to higher-potential node; defines regulated output voltage referenced to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Ensures standardized mechanical dimensions, marking, and test methodology across suppliers |
| ±5% voltage tolerance (B suffix) | Enables tighter regulation than ±10% or ±20% variants without premium cost of ±1% parts |
| 25 °C/W junction-to-lead thermal resistance | Supports full 5 W dissipation with simple lead-length heatsinking - no PCB copper pour required |
| Nonsensitive to ESD per MIL-STD-750 Method 1020 | Eliminates need for handling precautions beyond standard static-safe practices |
| RoHS-compliant option (e3 suffix) | Meets environmental compliance without performance trade-off; matte-tin plating solderable per MIL-STD-750 |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback path via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision voltage reference establishing error threshold for PWM controller shutdown or duty cycle adjustment. Use Value: 25 V ±5% tolerance and 0.55 V ΔVZ ensure stable regulation across line/load/temperature, minimizing output drift. | Use Scenario: Connected across sensitive IC supply rail (e.g., microcontroller VDD) to shunt transient surges above safe threshold. IC Role / Device Role / Timing Role: Fast-acting crowbar element that conducts heavily above 25 V, limiting rail excursion to safe levels. Use Value: 110 A surge rating and low ZZ enable reliable clamping of 8.3 ms transients without degradation or thermal runaway. |
| Programmable Voltage Reference | DC Bias Stabilization |
Use Scenario: Used with resistor divider to generate adjustable reference for ADC, DAC, or comparator input thresholds. IC Role / Device Role / Timing Role: Stable, temperature-compensated voltage source replacing higher-cost IC references where moderate accuracy suffices. Use Value: Low 0.5 µA IR at 19 V and tight 5% tolerance allow predictable divider ratios and minimal quiescent current impact. | Use Scenario: Provides fixed bias voltage to gate of power MOSFET or base of BJT in linear regulator or amplifier stage. IC Role / Device Role / Timing Role: Maintains constant operating point despite supply fluctuations or temperature drift. Use Value: 25 °C/W thermal resistance allows direct mounting on heatsink or chassis, sustaining bias stability under high ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5360B | No TR12 tape-and-reel packaging; bulk or ammo-pack only | Lacks automated placement compatibility; suitable for manual or low-volume assembly | Select 1N5360B if reel packaging is unnecessary and cost minimization is prioritized |
| MMSZ5254BT1G | Surface-mount SOD-123 package; 200 mW rating; 25 V ±5%; 30 Ω ZZ | Not suitable for 5 W power dissipation; limited to low-current bias/reference roles | Select MMSZ5254BT1G only for space-constrained PCBs where power < 200 mW and thermal mass is insufficient for axial devices |
Compared with 1N5360/TR12, the 1N5360B offers identical electrical specs but lacks tape-and-reel convenience for SMT lines, while MMSZ5254BT1G trades power capability for miniaturization - making 1N5360/TR12 the sole choice for robust 5 W regulation requiring automated placement.
Availability
1N5360/TR12 is available at Aetrix Electronics and suitable for switch-mode power supplies, overvoltage protection circuits, and programmable reference designs requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing support.
Supply support for 1N5360/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 engineered for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, surge resilience, and long-term parametric stability under extended temperature cycling.
FAQ
What is the Zener voltage tolerance of the 1N5360/TR12?
The 1N5360/TR12 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its nominal 25 V regulation voltage falls within 23.75 V to 26.25 V at 25 °C with 50 mA test current. The tolerance remains valid across the full operating temperature range of –65 °C to +150 °C, as confirmed in Microsemi's official 1N5333B–1N5388B datasheet revision D.
Can the 1N5360/TR12 be used without a heatsink?
The 1N5360/TR12 can dissipate up to 1.47 W continuously at 25 °C ambient when mounted on a standard FR4 PCB with 4 mm² copper pads and 1 mm wide × 25 mm long traces - no external heatsink required at that power level. For full 5 W operation, it must be mounted with 3/8″ (10 mm) lead length from the body to achieve 25 °C/W junction-to-lead thermal resistance, per Microsemi's derating curve in Figure 1.
What does the "TR12" suffix mean in 1N5360/TR12?
The "TR12" suffix indicates tape-and-reel packaging per EIA-296 standard, with 12,000 units per reel. This format enables automated surface-mount placement despite the device's axial-leaded T-18 package - achieved using carrier tape with pocketed cavities and cover tape. The underlying electrical and thermal specifications of the 1N5360/TR12 remain identical to the bulk 1N5360B variant.
Is the 1N5360/TR12 RoHS compliant?
Yes, the 1N5360/TR12 is RoHS compliant, as confirmed by the "e3" designation in Microsemi's official documentation for the 1N5333B–1N5388B series. It uses annealed matte-tin plating on leads, meeting EU Directive 2011/65/EU requirements. No lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances exceed allowable limits.
What is the maximum reverse leakage current for the 1N5360/TR12?
The maximum reverse leakage current (IR) for the 1N5360/TR12 is 0.5 µA, measured at a reverse voltage (VR) of 19 V - which is 76% of its nominal 25 V Zener voltage. This low leakage ensures minimal power loss and stable biasing in high-impedance reference circuits, especially critical in battery-powered or low-quiescent-current applications.
1N5360/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):
- 25 V
- Tolerance:
- ±20%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 4 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 18 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
1N5360/TR12 FAQ
1.How can I place an order for 1N5360/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5360/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 1N5360/TR12 reliable?
The price and inventory of 1N5360/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5360/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5360/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5360/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5360/TR12?
1N5360/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5360/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 1N5360/TR12?
For technical support, including 1N5360/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5360/TR12 requirements.
6.How does Aetrix verify that 1N5360/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5360/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 1N5360/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5360/TR12?
All 1N5360/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5360/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 1N5360/TR12 part is unused and in its original packaging.
Return procedure for 1N5360/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5360/TR12 Tags
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