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Microchip Technology 1N3156E3/TR
- Part No.:
- 1N3156E3/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N3156E3/TR.pdf
- Description:
- DIODE ZENER 8.4V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:9,688
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Product details
Overview
1N3156E3/TR from Microsemi is a temperature-compensated 8.4 V Zener reference diode in DO-7 (DO-204AA) glass axial-leaded package, rated for ±5% voltage tolerance at 10 mA test current, with 0.002 %/°C temperature coefficient and 26 mV max voltage drift over –55°C to +100°C. It serves as a precision voltage reference in high-stability analog instrumentation circuits.
For engineers reviewing the 1N3156E3/TR datasheet, 1N3156E3/TR pinout, 1N3156E3/TR application, or 1N3156E3/TR equivalent, key selection criteria include its ultra-low TC, hermetic glass packaging, RoHS-compliant matte-tin plating, and tape-and-reel availability for automated assembly.
Technical Context
This device belongs to the JEDEC-registered 1N3154–1N3157A series of zero-TC Zener references, engineered to minimize voltage variation across temperature via internal metallurgical compensation. Its 8.4 V nominal output is specified at IZT = 10 mA, with ZZT ≤ 15 Ω and IR ≤ 10 μA at 5.5 V.
It operates within –65°C to +175°C storage/operating range, dissipates up to 500 mW at TL = 25°C, and is ESD-nonsensitive per MIL-STD-750 Method 1020. The cathode band denotes polarity: banded end must be positive relative to the anode during operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 8.00–8.80 V @ 10 mA - defines stable reference window for calibration-critical circuits |
| Temp Coefficient αVZ | 0.002 %/°C - enables sub-0.2 mV/°C drift in precision analog front-ends |
| Zener Impedance ZZT | ≤15 Ω @ 10 mA - ensures low dynamic impedance for ripple rejection in regulated supplies |
| Max ΔVZT | 26 mV over –55°C to +100°C - guarantees bounded error without external trimming |
| Reverse Current IR | ≤10 μA @ 5.5 V - confirms low leakage for battery-powered reference nodes |
| Power Dissipation | 500 mW @ TL = 25°C - supports robust thermal margin in sealed enclosures |
| Operating Temp Range | –65°C to +175°C - validated for aerospace and downhole industrial environments |
Pinout & Package
DO-7 (DO-204AA) hermetically sealed glass axial-leaded package with tin-lead (military) or RoHS-compliant matte-tin plating; cathode identified by black band; weight 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; reverse-biased operation requires this terminal negative relative to cathode |
| Cathode (banded end) | Stable reference output | Provides 8.4 V reference potential; must be held positive relative to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | 0.002 %/°C TC enables <±0.17 mV/°C drift at 8.4 V - critical for metrology-grade references |
| Hermetic glass construction | DO-7 package ensures long-term parameter stability and moisture immunity in harsh environments |
| RoHS compliance | e3 suffix indicates annealed matte-tin plating - meets lead-free assembly requirements without solderability loss |
| Tape-and-reel packaging | TR suffix denotes EIA-296 standard reel - enables high-yield SMT placement despite axial-leaded form factor |
Applications
| High-Accuracy Digital Multimeters | Aerospace Sensor Signal Conditioning |
|---|---|
Use Scenario: Reference voltage source for 6½-digit ADC front-end requiring <10 ppm/°C stability. IC Role / Device Role / Timing Role: Primary voltage reference for successive-approximation register (SAR) ADC reference buffer stage. Use Value: 26 mV max ΔVZT over –55°C to +100°C eliminates need for on-board temperature compensation algorithms. | Use Scenario: Biasing and calibration reference in inertial measurement unit (IMU) analog signal chain operating at –55°C to +125°C. IC Role / Device Role / Timing Role: Stable excitation source for strain-gauge Wheatstone bridges and RTD interface circuits. Use Value: Hermetic DO-7 package and –65°C to +175°C rating ensure reliability under thermal cycling and vacuum exposure. |
| Industrial Programmable Logic Controller (PLC) Analog I/O Modules | Nuclear Instrumentation Calibration Standards |
Use Scenario: Reference for 16-bit DACs and isolated current-loop transmitters in factory automation systems. IC Role / Device Role / Timing Role: Precision shunt reference for voltage-to-current conversion and loop-powered sensor interfaces. Use Value: 15 Ω ZZT minimizes load-induced error when driving op-amp feedback networks in 4–20 mA transmitters. | Use Scenario: Traceable voltage standard in radiation-hardened dosimetry equipment requiring NIST-traceable stability. IC Role / Device Role / Timing Role: Primary reference element in portable gamma-spectrometer calibration fixtures. Use Value: Radiation-hardened variants (RH3156) share identical electrical specs - enables qualification path for mission-critical nuclear applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N3156A | Extended temperature range: –55°C to +150°C; same VZ, TC, and ZZT | Preferred for extended-range industrial controllers where ambient exceeds +100°C | Select 1N3156A when operating above +100°C ambient is required; otherwise 1N3156E3/TR offers identical performance at lower cost |
| BZX84-C8V2 | 8.2 V nominal, ±5% tolerance, 0.05 %/°C TC, SOT-23 package, 350 mW PD | Suitable for space-constrained consumer electronics but lacks ultra-low TC and hermetic sealing | Choose BZX84-C8V2 only for cost-sensitive, non-metrology applications where ±0.4 V offset and higher TC are acceptable |
Compared with 1N3156A, the 1N3156E3/TR trades +150°C capability for RoHS compliance and tape-and-reel readiness; versus BZX84-C8V2, it delivers 25× lower temperature coefficient and hermetic reliability essential for calibration infrastructure.
Availability
1N3156E3/TR is available at Aetrix Electronics and suitable for high-accuracy digital multimeters, aerospace sensor signal conditioning, and industrial PLC analog I/O modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N3156E3/TR 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 radiation-hardened components for aerospace, defense, and industrial markets.
The 1N3156E3/TR belongs to Microsemi's legacy JEDEC-registered Zener reference diode family, designed specifically for metrology-grade voltage references where long-term stability, low TC, and hermetic packaging are mandatory.
FAQ
What is the nominal Zener voltage and tolerance of the 1N3156E3/TR?
The 1N3156E3/TR has a nominal Zener voltage of 8.4 V with a tolerance of ±5%, specified as 8.00–8.80 V at 10 mA test current. This tolerance band is fixed for the base part number; tighter tolerances (e.g., ±1%, ±2%) require explicit suffixes like "-1%" or "-2%" added to the part number per Microsemi documentation.
Is the 1N3156E3/TR RoHS compliant and what does the 'e3' suffix indicate?
Yes, the 1N3156E3/TR is RoHS compliant. The 'e3' suffix denotes annealed matte-tin plating per MIL-STD-750 Method 2026, replacing traditional tin-lead finishes while maintaining solderability and reliability. This compliance applies only to commercial versions - military-qualified variants (JAN/JANTX/JANTXV) use tin-lead plating and do not carry the e3 suffix.
What is the maximum temperature coefficient (TC) of the 1N3156E3/TR and how is it achieved?
The 1N3156E3/TR has a maximum effective temperature coefficient of 0.002 %/°C. This ultra-low TC is achieved through internal metallurgical compensation within the Zener junction structure, minimizing voltage drift across temperature. It is measured over the –55°C to +100°C range and verified at 10 mA operating current.
What package type and marking does the 1N3156E3/TR use?
The 1N3156E3/TR uses the DO-7 (DO-204AA) hermetically sealed glass axial-leaded package. It is marked with the full part number "1N3156E3" and a cathode band (black stripe) on the glass body. The TR suffix confirms EIA-296 standard tape-and-reel packaging for automated placement.
Can the 1N3156E3/TR be used in radiation-intensive environments?
The standard 1N3156E3/TR is not radiation-hardened. However, Microsemi offers radiation-hardened equivalents under the RH prefix (e.g., RH3156), which share identical electrical specifications including 8.4 V nominal voltage, 0.002 %/°C TC, and DO-7 packaging. RH3156 devices are qualified for total ionizing dose (TID) up to 300 krad(Si) and require separate ordering and qualification.
1N3156E3/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.4 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.5 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7
1N3156E3/TR FAQ
1.How can I place an order for 1N3156E3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3156E3/TR 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 1N3156E3/TR reliable?
The price and inventory of 1N3156E3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N3156E3/TR is usually 5 days.
3.What payment methods are accepted for 1N3156E3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3156E3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3156E3/TR?
1N3156E3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3156E3/TR 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 1N3156E3/TR?
For technical support, including 1N3156E3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3156E3/TR requirements.
6.How does Aetrix verify that 1N3156E3/TR is sourced from the original manufacturer or authorized distributors?
All 1N3156E3/TR 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 1N3156E3/TR meets industry standards.
7.What is the process for return or replacement of 1N3156E3/TR?
All 1N3156E3/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N3156E3/TR, 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 1N3156E3/TR part is unused and in its original packaging.
Return procedure for 1N3156E3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N3156E3/TR Tags
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