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Microchip Technology JANTXV1N4970CUS/TR
- Part No.:
- JANTXV1N4970CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4970CUS/TR.pdf
- Description:
- DIODE ZENER 33V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:8,968
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Product details
Overview
JANTXV1N4970CUS/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode rated for 5 W power dissipation, with nominal Zener voltage of 33 V at 40 mA test current, ±1% tolerance (C suffix), and maximum dynamic impedance of 200 Ω at IZT. It operates across –65 °C to +175 °C and is used in precision voltage regulation for avionics power conditioning.
For engineers reviewing the JANTXV1N4970CUS/TR datasheet, JANTXV1N4970CUS/TR pinout, JANTXV1N4970CUS/TR application, or JANTXV1N4970CUS/TR equivalent, key selection criteria include its voidless-glass package, Category III metallurgical bond, radiation-hardened construction per MicroNote 050, and compliance with MIL-PRF-19500/356 Class V screening.
Technical Context
This device belongs to the 1N4954US–1N4996US family and uses a hard-glass, voidless hermetic enclosure with tungsten slugs and copper end caps finished in Sn/Pb. Its Zener breakdown mechanism delivers stable regulation over wide temperature and current ranges, supported by triple-layer passivation and ESD immunity per MIL-STD-750 Method 1020.
The JANTXV1N4970CUS/TR exhibits a temperature coefficient of +0.095 %/°C and maintains ≤3.0 V voltage regulation (ΔVZ) between 10% and 50% of IZM. Its thermal resistance is 10 °C/W junction-to-end-cap, enabling reliable operation at TEC = 125 °C before linear derating to zero at 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V ±1% at 40 mA - ensures tight reference stability for critical analog supply rails |
| Power Dissipation | 5 W @ TEC = 125 °C - supports high-reliability operation in conduction-cooled aerospace modules |
| Dynamic Impedance (ZZ) | 200 Ω @ IZT - limits output voltage variation under load transients in regulated supplies |
| Max Reverse Leakage | 2.8 V @ 2 μA - guarantees minimal standby current in low-power hold-up circuits |
| Temp Coefficient (αVZ) | +0.095 %/°C - enables predictable drift compensation in wide-temperature-range systems |
| Surge Current (IZSM) | 5.0 A @ 8.3 ms - withstands lightning-induced transients in MIL-STD-461-compliant platforms |
| Operating Temperature | –65 °C to +175 °C - qualified for engine-mounted electronics and space-grade thermal cycling |
Pinout & Package
Package: "E" outline (also designated D-5B), hermetically sealed voidless glass case with tungsten slugs and copper end caps. Cathode indicated by band. Tape-and-reel packaging per EIA-481-B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail during reverse-biased regulation |
| Cathode | Zener breakdown terminal | Connected to unregulated input; delivers stable 33 V output referenced to anode |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic voidless-glass seal | Eliminates moisture ingress and internal delamination risks in 100% humidity or vacuum environments |
| Category III metallurgical bond | Ensures mechanical integrity under shock/vibration up to 100 g in flight-critical subsystems |
| Radiation hardness | Qualified per Microsemi MicroNote 050 for total ionizing dose >100 krad(Si) in space applications |
| Nonsensitive to ESD | Withstands ≥4 kV HBM without parameter shift-no external protection required in cleanroom assembly |
| MIL-PRF-19500/356 JANTXV | Includes full lot traceability, burn-in, and parametric screening for Class V high-reliability programs |
Applications
| Aerospace Power Conditioning | Avionics Reference Supply |
|---|---|
Use Scenario: Regulating auxiliary 33 V bus in fly-by-wire control unit power distribution. IC Role / Device Role / Timing Role: Primary Zener shunt regulator maintaining stable bias for op-amps and ADC references. Use Value: Maintains <±0.33 V regulation across –55 °C to +125 °C ambient with no derating below 125 °C case temperature. |
Use Scenario: Providing precision 33 V reference for inertial measurement unit (IMU) sensor excitation. IC Role / Device Role / Timing Role: Voltage reference element in ratiometric bridge excitation circuit. Use Value: Delivers ±1% initial accuracy and <0.1%/°C drift, enabling sub-0.05% full-scale error in calibrated IMU outputs. |
| Tactical Radio RF Stage Bias | Satellite Payload DC-DC Monitoring |
Use Scenario: Stabilizing gate bias voltage for GaN PA stages in S-band tactical radios. IC Role / Device Role / Timing Role: Zener clamp protecting gate driver ICs from transient overvoltage. Use Value: Withstands 5 A surge at 8.3 ms while limiting clamping voltage to ≤36 V, preserving PA reliability. |
Use Scenario: Monitoring 33 V bus health in LEO satellite power management unit (PMU). IC Role / Device Role / Timing Role: Precision voltage sense element feeding ADC input of telemetry controller. Use Value: Radiation-hardened construction ensures stable 33 V reference output after 100 krad(Si) exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4970DUS/TR | Same 33 V rating but ±0.5% tolerance (D suffix); higher cost and longer lead time | Required only where tighter initial accuracy is mandated by system-level calibration spec | Select JANTXV1N4970DUS/TR if ΔVZ budget demands <±0.165 V at 25 °C before temp drift |
| 1N4970US | Commercial-grade version; lacks MIL-PRF-19500/356 screening, no radiation hardness data | Suitable for ground-based non-safety-critical test equipment, not flight hardware | Choose 1N4970US only for lab prototypes or cost-sensitive industrial controls with <85 °C max ambient |
Compared with JANTXV1N4970CUS/TR, JANTXV1N4970DUS/TR offers superior initial accuracy but identical thermal and surge performance, while 1N4970US omits military screening and radiation assurance-making it unsuitable for deployed aerospace systems.
Availability
JANTXV1N4970CUS/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, avionics reference supply, and tactical radio RF stage bias requiring stable component supply under extended temperature, radiation, and shock/vibration stress.
Supply support for JANTXV1N4970CUS/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) designs high-reliability analog and mixed-signal semiconductors for defense, aerospace, and industrial markets.
The JANTXV1N4970CUS/TR belongs to Microsemi's military-qualified Zener diode product line, engineered specifically for voltage regulation in mission-critical systems operating under extreme environmental stress.
FAQ
What is the Zener voltage tolerance of JANTXV1N4970CUS/TR?
JANTXV1N4970CUS/TR has a nominal Zener voltage of 33 V with ±1% tolerance, denoted by the "C" suffix in the part number. This tolerance is guaranteed at 25 °C and 40 mA test current per MIL-PRF-19500/356 screening, and applies across the full military temperature range when combined with its +0.095 %/°C temperature coefficient.
Is JANTXV1N4970CUS/TR compatible with lead-free soldering processes?
JANTXV1N4970CUS/TR features Sn/Pb-finished copper end caps and is qualified for reflow profiles up to 235 °C peak, but is not lead-free compatible. Its termination finish requires traditional eutectic soldering; conversion to Pb-free assembly would require redesign verification and is not supported per Microsemi SD44A specification.
Does JANTXV1N4970CUS/TR meet radiation hardness requirements for LEO missions?
Yes-JANTXV1N4970CUS/TR is inherently radiation-hardened per Microsemi MicroNote 050 and qualified for total ionizing dose (TID) exceeding 100 krad(Si), making it suitable for use in low-Earth orbit satellite power and telemetry subsystems without additional shielding or derating.
What is the maximum continuous Zener current for JANTXV1N4970CUS/TR?
The maximum continuous Zener current (IZM) for JANTXV1N4970CUS/TR is 5.0 A, calculated from its 5 W power rating and 33 V nominal Zener voltage (IZM = PZ / VZ). This value assumes operation at TEC = 125 °C and linear derating to zero at 175 °C per the datasheet's thermal curve.
How is polarity identified on JANTXV1N4970CUS/TR?
JANTXV1N4970CUS/TR uses a cathode band marking on the glass body to indicate polarity. The banded end is the cathode; the opposite end is the anode. This marking is visible under standard optical inspection and aligns with JEDEC-standard orientation for surface-mount Zener diodes in the "E" (D-5B) package.
JANTXV1N4970CUS/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF, E
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 25.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 1 A
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/356
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- E-MELF
JANTXV1N4970CUS/TR FAQ
1.How can I place an order for JANTXV1N4970CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4970CUS/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 JANTXV1N4970CUS/TR reliable?
The price and inventory of JANTXV1N4970CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4970CUS/TR is usually 5 days.
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Once your JANTXV1N4970CUS/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 JANTXV1N4970CUS/TR?
For technical support, including JANTXV1N4970CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4970CUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4970CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4970CUS/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 JANTXV1N4970CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4970CUS/TR?
All JANTXV1N4970CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4970CUS/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 JANTXV1N4970CUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4970CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4970CUS/TR Tags
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