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Microchip Technology 1N5352/TR8
- Part No.:
- 1N5352/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5352/TR8.pdf
- Description:
- DIODE ZENER 15V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:6,747
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Product details
Overview
1N5352/TR8 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 15 V, ±5% tolerance (B suffix), 75 mA test current (IZT), 2.5 Ω maximum dynamic impedance (ZZ), and 6.3 V maximum voltage regulation (ΔVZ) - used for precision voltage reference and overvoltage protection in DC power supplies and analog circuits.
For engineers reviewing the 1N5352/TR8 datasheet, 1N5352/TR8 pinout, 1N5352/TR8 application, or 1N5352/TR8 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (25 °C/W junction-to-lead), surge current rating (75 A), reverse leakage performance at 10.8 V (≤1.0 µA), and RoHS-compliant matte-tin plating per MIL-STD-750.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased mode, with cathode indicated by a band and rated for continuous DC power dissipation of 5.0 W at 25 °C lead temperature (TL). Its low thermal resistance enables stable regulation under high-current transient conditions when mounted with ≥10 mm lead length from body.
The 1N5352/TR8 exhibits minimal voltage drift across operating current (ΔVZ = 6.3 V between 10% and 50% IZM), tight dynamic impedance (2.5 Ω at 75 mA), and robust surge capability (75 A half-sine, 8.3 ms) - confirming suitability for industrial power rail stabilization and ESD-hardened reference design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15 V ±5% - defines precise clamping threshold for 12–15 V supply rails. |
| Test Current (IZT) | 75 mA - operating point where VZ and ZZ are specified; sets minimum bias for stable regulation. |
| Dynamic Impedance (ZZ) | 2.5 Ω max - ensures <150 mV output variation per 60 mA load change near IZT. |
| Max Reverse Leakage (IR) | ≤1.0 µA at VR = 10.8 V - guarantees low quiescent current in standby-mode references. |
| Surge Current (IZSM) | 75 A peak (8.3 ms half-sine) - withstands common AC line transients and inductive kickback. |
| Thermal Resistance (RθJL) | 25 °C/W junction-to-lead - requires ≥10 mm lead length for full 5 W derating to ambient. |
| Operating Temperature | −65 °C to +150 °C - supports deployment in automotive engine bays and industrial enclosures. |
Pinout & Package
Package: Axial-leaded T-18 plastic case (void-free UL94V-0 epoxy), cathode identified by color band; leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system GND or lowest potential; forms return path for Zener current. |
| Cathode | Regulated output node | Banded end; connected to voltage rail being stabilized; reverse-biased during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener family | Ensures cross-manufacturer compatibility and standardized test methodology per JESD24. |
| Moisture sensitivity Level 1 | No dry pack required - simplifies SMT reflow handling and reduces BOM prep overhead. |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special ESD handling in assembly. |
| Tight voltage regulation (ΔVZ) | 6.3 V max difference between 10% and 50% of IZM - enables stable reference under varying load. |
| High surge current rating | 75 A (8.3 ms half-sine) - protects downstream circuitry from repetitive switching transients. |
Applications
| DC Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing unregulated 18 V DC input to deliver clean 15 V for op-amp biasing in sensor signal conditioning. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing fixed 15 V reference against load and line variations. Use Value: Maintains ≤±0.75 V output deviation across 10–75 mA load range due to 2.5 Ω ZZ and low ΔVZ. |
Use Scenario: Clamping 24 V industrial control bus to prevent damage during 100 V/1 µs surge events. IC Role / Device Role / Timing Role: Passive overvoltage clamp absorbing transient energy via controlled avalanche breakdown. Use Value: Limits bus voltage to ≤15.8 V (VZM) during surges up to 75 A, protecting 16 V-rated ICs. |
| Temperature-Stable Reference | Programmable Current Source Bias |
Use Scenario: Generating precision bias current for a PT100 RTD bridge amplifier operating from −40 °C to +85 °C. IC Role / Device Role / Timing Role: Low-drift Zener reference establishing stable voltage for current-setting resistor. Use Value: Delivers <±0.1% VZ shift over −65 °C to +150 °C due to compensated junction design. |
Use Scenario: Setting constant 10 mA bias current for a high-side MOSFET gate driver in a 12 V automotive module. IC Role / Device Role / Timing Role: Shunt-regulated current source using series resistor and 1N5352/TR8 voltage reference. Use Value: Enables ±1% current accuracy over temperature via stable 15 V reference and low ZZ. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5352B | No TR8 tape-and-reel suffix; bulk packaging only; identical electrical specs and T-18 package. | Not suitable for automated pick-and-place; requires manual loading or tube-to-tape conversion. | Select 1N5352/TR8 for SMT production lines requiring EIA-296 compliant tape feed. |
| MMBZ5245B | SOT-23 surface-mount package; 15 V ±5%, but lower 0.5 W power rating and 100 mA IZM. | Limited to low-power signal-level references; cannot replace 1N5352/TR8 in 5 W power rail roles. | Choose MMBZ5245B only for space-constrained PCBs where <500 mW dissipation suffices. |
Compared with 1N5352B and MMBZ5245B, the 1N5352/TR8 uniquely combines JEDEC-standard axial packaging, 5 W power handling, and EIA-296 tape-and-reel delivery - making it the sole option for high-reliability through-hole or mixed-technology power regulation requiring automated assembly and thermal robustness.
Availability
1N5352/TR8 is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and temperature-stable reference designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N5352/TR8 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, RF, and timing components for aerospace, defense, and industrial markets.
The 1N53xxB series was designed specifically for ruggedized voltage regulation in harsh-environment power systems - emphasizing thermal stability, surge resilience, and JEDEC-standardized performance verification.
FAQ
What is the Zener voltage tolerance of the 1N5352/TR8?
The 1N5352/TR8 has a nominal Zener voltage of 15 V with ±5% tolerance, confirmed by the "B" suffix per Microsemi's datasheet. This means the actual VZ falls between 14.25 V and 15.75 V at 75 mA test current and 25 °C lead temperature. The 1N5352/TR8 maintains this tolerance across its full operating temperature range of −65 °C to +150 °C.
Does the 1N5352/TR8 require dry packing before reflow soldering?
No, the 1N5352/TR8 has IPC/JEDEC J-STD-020B moisture sensitivity Level 1, meaning it is not hygroscopic and does not require dry packing or baking prior to reflow. Its void-free UL94V-0 epoxy encapsulation and matte-tin plating ensure reliable solderability at 260 °C for 10 seconds without moisture-related popcorning.
What is the maximum steady-state power dissipation for the 1N5352/TR8 on a standard PCB?
When mounted on an FR4 board with 1 oz copper, 4 mm² pads, and 1 mm × 25 mm traces, the 1N5352/TR8 delivers 1.47 W steady-state power at 25 °C ambient - derived from its 85 °C/W junction-to-ambient thermal resistance. Full 5 W operation requires heat sinking at the lead (25 °C/W junction-to-lead) with ≥10 mm lead length from the body.
How is polarity marked on the 1N5352/TR8?
The 1N5352/TR8 uses a single color band to indicate the cathode terminal, consistent with industry-standard diode marking. During operation, the banded (cathode) end must be held at a higher potential than the anode to achieve reverse-bias Zener conduction. Incorrect polarity results in forward conduction (~1.2 V drop) and loss of regulation.
Is the 1N5352/TR8 RoHS compliant?
Yes, the 1N5352/TR8 carries the "e3" suffix in its full manufacturer designation (1N5352B e3), confirming RoHS compliance per EU Directive 2011/65/EU. Its leads feature annealed matte-tin plating instead of tin-lead alloy, and its thermosetting epoxy body meets UL94V-0 flammability requirements without halogenated flame retardants.
1N5352/TR8 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):
- 15 V
- Tolerance:
- ±20%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10.8 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
1N5352/TR8 FAQ
1.How can I place an order for 1N5352/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5352/TR8 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 1N5352/TR8 reliable?
The price and inventory of 1N5352/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5352/TR8 is usually 5 days.
3.What payment methods are accepted for 1N5352/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5352/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5352/TR8?
1N5352/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5352/TR8 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 1N5352/TR8?
For technical support, including 1N5352/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5352/TR8 requirements.
6.How does Aetrix verify that 1N5352/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N5352/TR8 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 1N5352/TR8 meets industry standards.
7.What is the process for return or replacement of 1N5352/TR8?
All 1N5352/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5352/TR8, 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 1N5352/TR8 part is unused and in its original packaging.
Return procedure for 1N5352/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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