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Microchip Technology 1N5340C/TR12
- Part No.:
- 1N5340C/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5340C/TR12.pdf
- Description:
- DIODE ZENER 6V 5W T18
- Quantity:
- Payment:
- Shipping:
Inventory:7,295
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Product details
Overview
1N5340C/TR12 from Microsemi is a 6.0 V, ±2% tolerance, 5 W axial-leaded silicon Zener diode optimized for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation. It delivers stable regulation at 200 mA test current with 1.0 Ω dynamic impedance and supports operation from –65°C to +150°C.
For engineers reviewing the 1N5340C/TR12 datasheet, 1N5340C/TR12 pinout, 1N5340C/TR12 application, or 1N5340C/TR12 equivalent, this page provides verified electrical parameters, thermal derating behavior, JEDEC T-18 package details, and validated alternative parts for industrial and aerospace-grade designs requiring tight-tolerance Zener regulation.
Technical Context
The 1N5340C/TR12 operates as a two-terminal voltage reference device, conducting in reverse breakdown at its nominal 6.0 V zener voltage (VZ) when reverse-biased above that threshold. Its ±2% tolerance (C suffix) and low 1.0 Ω dynamic impedance (ZZ) at IZT = 200 mA ensure minimal voltage drift across load and line variations.
Designed for high-reliability mounting on FR4 PCBs or with 3/8″ lead length heat sinking, it sustains 790 mA maximum regulator current (IZM) at 25°C lead temperature and withstands 12.7 A non-recurring surge current (IZSM) per 8.3 ms half-sine waveform - critical for transient suppression in DC-DC converter outputs and rail clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.0 V ±2% at 200 mA - ensures precise reference accuracy for feedback networks in regulated power supplies. |
| Power Dissipation (PD) | 5.0 W at TL = 25°C (3/8″ lead length) - enables robust regulation under sustained DC load without forced cooling. |
| Dynamic Impedance (ZZ) | 1.0 Ω max at IZT = 200 mA - minimizes output voltage variation during rapid load transients. |
| Max Regulator Current (IZM) | 790 mA at TL = 25°C - supports high-current shunt regulation in battery charger or LDO reference paths. |
| Surge Current (IZSM) | 12.7 A peak (8.3 ms half-sine) - provides reliable transient overvoltage clamping in automotive and industrial inputs. |
| Operating Temperature | –65°C to +150°C - qualified for extended-range environments including avionics and downhole electronics. |
| Forward Voltage (VF) | 1.2 V max at 1.0 A - defines forward conduction loss when used bidirectionally or in series protection configurations. |
Pinout & Package
JEDEC T-18 axial-leaded plastic package with cathode indicated by band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026. Moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference node | Connected to lower-potential side of regulated circuit; forms return path for zener current. |
| Cathode (banded end) | Zener breakdown terminal | Connected to higher-potential side (e.g., supply rail); voltage referenced to anode at 6.0 V ±2%. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables tighter output regulation than ±5% (B) or ±10% (A) variants - reduces need for post-regulation trimming. |
| Low 1.0 Ω dynamic impedance | Minimizes ΔVZ = 0.19 V (10% to 50% IZM) - improves stability in closed-loop feedback applications. |
| JEDEC-registered T-18 outline | Ensures mechanical interchangeability with legacy 1N53xx designs and compatibility with standard axial-lead assembly tooling. |
| RoHS-compliant e3 option | Meets EU Directive 2011/65/EU without compromising thermal resistance (25°C/W junction-to-lead). |
| MIL-PRF-19500 screening available | Supports JAN, JANTX, JANTXV qualification via MQ/MX/MV prefixes - required for space-qualified and defense programs. |
Applications
| Switch-Mode Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in TL431-based or discrete op-amp feedback networks to regulate +5 V or +12 V DC-DC converter outputs. IC Role / Device Role / Timing Role: Precision voltage reference establishing error amplifier setpoint; replaces higher-cost IC references where cost and simplicity are prioritized. Use Value: ±2% tolerance and 1.0 Ω ZZ reduce output deviation to <±0.12 V across 10–100% load, improving system efficiency and compliance margin. |
Use Scenario: Placed across input rails of industrial PLC I/O modules to clamp ESD or inductive kick events. IC Role / Device Role / Timing Role: Passive shunt clamp limiting transient voltage to ≤6.12 V (max VZ + ΔVZ) before downstream protection triggers. Use Value: 12.7 A surge rating absorbs 8.3 ms transients up to 100 J (calculated), preventing latch-up in microcontroller power domains. |
| Programmable Reference Source | Temperature-Stable Bias Generator |
Use Scenario: Paired with precision resistors in analog sensor signal conditioning circuits to generate stable 6.0 V bias for bridge amplifiers. IC Role / Device Role / Timing Role: Low-drift voltage source replacing LM336 or REF02 where board space and BOM count must be minimized. Use Value: –65°C to +150°C operating range and <0.002%/°C typical TCVZ (per family data) maintain reference accuracy across thermal cycling. |
Use Scenario: Integrated into constant-current LED driver bias networks where thermal tracking between Zener and transistor base-emitter junction is exploited. IC Role / Device Role / Timing Role: Temperature-compensated reference element leveraging matched negative TC of VBE and positive TC of VZ. Use Value: 6.0 V nominal point lies near zero-TC crossover for silicon devices - enables <±50 ppm/°C net drift in bias current over –40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5340B/TR12 | ±5% tolerance (vs. ±2%), same VZ, IZT, ZZ, and package - otherwise identical electrical and thermal specs. | Suitable for non-critical regulation where cost priority outweighs precision; not acceptable for feedback loops requiring <±0.2 V tolerance. | Select 1N5340B/TR12 only if design tolerates ±0.3 V VZ variation and avoids additional calibration steps. |
| MMBZ5234B-TP (Micro Commercial) | Surface-mount SOT-23 package, 6.0 V ±5%, 0.5 W rating, ZZ = 17 Ω - significantly lower power and higher impedance than 1N5340C/TR12. | Applicable only in low-power signal-level clamping or biasing; cannot replace 1N5340C/TR12 in 5 W shunt regulation roles. | Choose MMBZ5234B-TP only for space-constrained PCBs where dissipation remains <300 mW and regulation stability is secondary. |
Compared with 1N5340B/TR12 and MMBZ5234B-TP, the 1N5340C/TR12 uniquely combines ±2% tolerance, 5 W capability, and axial-leaded T-18 packaging - making it irreplaceable in high-reliability, high-power, precision-shunt applications where both accuracy and thermal robustness are mandatory.
Availability
1N5340C/TR12 is available at Aetrix Electronics and suitable for industrial power supplies, aerospace avionics subsystems, and medical equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N5340C/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 voltage regulation in mission-critical systems where extended temperature operation, surge resilience, and JEDEC-standard mechanical reliability are non-negotiable.
FAQ
What is the exact zener voltage tolerance for 1N5340C/TR12?
The 1N5340C/TR12 has a nominal zener voltage of 6.0 V with a guaranteed tolerance of ±2%, as designated by the "C" suffix per Microsemi's datasheet revision D. This means the actual measured VZ at 200 mA test current falls within 5.88 V to 6.12 V at 25°C lead temperature - confirmed in the Electrical Characteristics table on page 1 of the official datasheet.
Can 1N5340C/TR12 be used in surface-mount designs?
No - the 1N5340C/TR12 uses a JEDEC T-18 axial-leaded package and is not compatible with SMT reflow processes. For surface-mount equivalents, Microsemi offers the SMBJ5340B series (SMB package, 5 W), but note that SMBJ5340B carries only ±5% tolerance and lacks the "C" suffix precision of the 1N5340C/TR12.
What is the maximum steady-state power dissipation for 1N5340C/TR12 on a standard FR4 PCB?
When mounted on a standard FR4 PCB (1 oz copper, 4 mm² pads, 1 mm track width, 25 mm length), the 1N5340C/TR12 is rated for 1.47 W steady-state power dissipation at 25°C ambient temperature. This derates linearly to zero at 150°C ambient, per Figure 1 in the Microsemi datasheet.
Does 1N5340C/TR12 meet RoHS requirements?
Yes - the "e3" suffix indicates RoHS compliance per EU Directive 2011/65/EU. The 1N5340C/TR12 uses RoHS-compliant matte-tin plating on leads and void-free UL94V-0 epoxy encapsulation, with no exemptions required for lead, cadmium, or hexavalent chromium.
How does the voltage regulation (ΔVZ) specification apply to 1N5340C/TR12?
For the 1N5340C/TR12, ΔVZ is specified as 0.19 V - defined as the difference between VZ measured at 10% and 50% of IZM (790 mA), i.e., at 79 mA and 395 mA. This quantifies its regulation linearity under varying current loads and confirms suitability for feedback applications demanding stable reference voltage.
1N5340C/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):
- 6 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 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
1N5340C/TR12 FAQ
1.How can I place an order for 1N5340C/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5340C/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 1N5340C/TR12 reliable?
The price and inventory of 1N5340C/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5340C/TR12 is usually 5 days.
3.What payment methods are accepted for 1N5340C/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5340C/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5340C/TR12?
1N5340C/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5340C/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 1N5340C/TR12?
For technical support, including 1N5340C/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5340C/TR12 requirements.
6.How does Aetrix verify that 1N5340C/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N5340C/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 1N5340C/TR12 meets industry standards.
7.What is the process for return or replacement of 1N5340C/TR12?
All 1N5340C/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5340C/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 1N5340C/TR12 part is unused and in its original packaging.
Return procedure for 1N5340C/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5340C/TR12 Tags
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MM5Z5V1ST1G
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