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onsemi 1N5270CRL
- Part No.:
- 1N5270CRL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N5270CRL.pdf
- Description:
- DIODE ZENER
- Quantity:
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- Shipping:
Inventory:5,000
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Product details
Overview
1N5270CRL from ON Semiconductor (formerly Motorola) is a 500 mW hermetically sealed glass Zener diode in DO-204AH (DO-35) package, rated for 91 V nominal zener voltage at 1.4 mA test current, with ±2% tolerance (suffix "C"), 400 Ω dynamic impedance, and +0.099%/°C temperature coefficient. It regulates voltage in low-power reference and protection circuits, such as overvoltage clamping in industrial sensor interfaces.
For engineers reviewing the 1N5270CRL datasheet, pinout, applications, or equivalent options, key selection criteria include its tight ±2% voltage tolerance, stable temperature coefficient above 82 V, low leakage (<0.1 µA at 69 V), and compatibility with manual and wave soldering up to 230°C for 10 seconds at 1/16″ from case.
Technical Context
This device operates in reverse breakdown mode to maintain a stable 91 V reference under controlled current conditions. Its double-slug, metallurgically bonded glass construction ensures hermetic sealing and thermal stability across –65°C to +200°C operating range.
Zener regulation occurs at IZT = 1.4 mA, with maximum power dissipation of 500 mW at lead temperature ≤75°C and linear derating above that point. Forward voltage is ≤1.1 V at 200 mA, confirming silicon P-N junction behavior consistent with standard Zener diode operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 91 V ±2% at 1.4 mA - precise reference for high-voltage sensing and clamping |
| Power Dissipation (PD) | 500 mW at TL ≤ 75°C - supports continuous regulation in compact, unheatsinked layouts |
| Zener Impedance (ZZT) | 400 Ω at IZT - limits output voltage variation under load current changes |
| Reverse Leakage (IR) | <0.1 µA at 69 V - ensures minimal standby current in high-impedance bias networks |
| Temperature Coefficient (θVZ) | +0.099 %/°C - predictable positive drift enables compensation in wide-temperature designs |
| Package | DO-204AH (DO-35) glass - axial-leaded, hermetically sealed, RoHS-compliant form factor |
| Forward Voltage (VF) | ≤1.1 V at IF = 200 mA - confirms low-loss conduction when used in forward-biased protection paths |
Pinout & Package
DO-204AH (DO-35) glass package: axial-leaded, double-slug hermetically sealed construction with cathode indicated by color band. Leads are corrosion-resistant and readily solderable; mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in Zener regulator configuration | Connected to system ground or lower-potential rail; reverse-biased relative to cathode during regulation |
| Cathode | Regulated output node in Zener regulator configuration | Marked with color band; held at stable 91 V above anode when reverse current ≥1.4 mA flows |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tighter regulation without external trimming in precision voltage references |
| Hermetically sealed glass construction | Guarantees long-term parameter stability and moisture resistance in harsh environments |
| Double-slug thermal design | Improves heat transfer from junction to leads, supporting reliable 500 mW operation |
| Metallurgically bonded junction | Reduces thermal resistance and enhances reliability under thermal cycling stress |
| JEDEC-standard DO-204AH footprint | Ensures mechanical and soldering compatibility with legacy and new PCB assembly processes |
Applications
| Industrial Sensor Signal Conditioning | Programmable Logic Controller (PLC) Input Protection |
|---|---|
Use Scenario: Stabilizing excitation voltage for 4–20 mA loop-powered pressure transmitters operating in ambient temperatures from –40°C to +85°C. IC Role / Device Role / Timing Role: Zener diode provides fixed 91 V reference for analog front-end biasing and overvoltage clamp on input stage. Use Value: Tight ±2% tolerance and +0.099%/°C TC ensure <±1.2% total voltage error across full temperature range, improving ADC accuracy. |
Use Scenario: Protecting digital input modules from transient surges induced by inductive load switching in factory automation cabinets. IC Role / Device Role / Timing Role: Acts as shunt regulator to clamp fast-rising transients (>1 kV/µs) before they reach downstream logic ICs. Use Value: Low leakage (<0.1 µA) prevents false triggering; glass package withstands repeated surge events per Figure 7a. |
| High-Voltage Power Supply Feedback | Test Equipment Reference Calibration |
Use Scenario: Providing stable feedback reference in isolated 100 V DC–DC converter secondary-side regulation loops. IC Role / Device Role / Timing Role: Zener sets error amplifier reference point; operates continuously at ~1.5 mA in regulated mode. Use Value: 400 Ω dynamic impedance minimizes output ripple sensitivity to load variations, maintaining <±0.5% output regulation. |
Use Scenario: Serving as traceable voltage reference in benchtop multimeter calibration fixtures requiring NIST-traceable 91 V points. IC Role / Device Role / Timing Role: Passive reference element in voltage divider networks used for end-of-line functional testing. Use Value: Hermetic glass seal and ±2% initial tolerance support calibration validity over 5+ years without drift verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5270BRL | ±5% tolerance (vs. ±2% for 1N5270CRL); identical VZ nominal, package, and thermal specs | Suitable where cost priority outweighs precision; requires wider design margins in feedback loops | Select 1N5270BRL only if system-level testing confirms ±5% VZ variation is acceptable for regulation accuracy |
| BZX55-C91 | Same 91 V ±2%, but in DO-35 package with higher max IR (1 µA at VR = 73 V) and slightly higher ZZT (450 Ω) | Acceptable in non-critical clamping; less suitable for precision references due to higher leakage and impedance | Prefer 1N5270CRL over BZX55-C91 when leakage-sensitive bias networks or low-impedance references are required |
Compared with 1N5270BRL and BZX55-C91, the 1N5270CRL delivers superior regulation stability via tighter tolerance and lower leakage-critical for high-accuracy voltage references and low-power sensor interfaces where parameter drift directly impacts measurement fidelity.
Availability
1N5270CRL is available at Aetrix Electronics and suitable for industrial sensor conditioning, PLC input protection, and high-voltage power supply feedback requiring stable component supply with guaranteed long-term availability.
Supply support for 1N5270CRL 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and cloud power applications.
The 1N5270CRL belongs to the legacy Motorola 500 mW DO-35 Zener series, designed for precision voltage reference and overvoltage protection in space-constrained, thermally demanding industrial systems.
FAQ
What is the exact zener voltage tolerance for 1N5270CRL?
The 1N5270CRL has a nominal zener voltage of 91 V with a guaranteed tolerance of ±2%, as indicated by the "C" suffix per JEDEC standard. This is confirmed in the Electrical Characteristics table on page 6-3 of the Motorola TVS/Zener Device Data document, where 1N5270B shows ±5% and note 1 explicitly defines "C" as ±2%. The 1N5270CRL maintains this tolerance across its rated operating temperature range.
What is the maximum reverse leakage current for 1N5270CRL at its rated test voltage?
The maximum reverse leakage current (IR) for 1N5270CRL is 0.1 µA at VR = 69 V, as specified in the Electrical Characteristics table for 1N5270B (which shares identical electrical parameters with the "C" variant except tolerance). This value is measured at TA = 25°C and reflects the device's ability to minimize standby current in high-impedance reference networks.
Can 1N5270CRL be used in surface-mount designs?
No, the 1N5270CRL is exclusively offered in the axial-leaded DO-204AH (DO-35) glass package and is not available in surface-mount variants. Its mechanical dimensions-3.05 mm diameter, 5.08 mm length, and 25.4 mm lead length-are defined for through-hole insertion and wave or hand soldering. For SMT alternatives, consider the BZX84-C91 or MMBZ5270B, which are not direct replacements.
What is the recommended soldering profile for 1N5270CRL?
The maximum lead temperature for soldering 1N5270CRL is 230°C for 10 seconds at a distance of 1/16″ (1.59 mm) from the glass case, as stated in the Mechanical Characteristics section. This applies to both manual and wave soldering. Exceeding this limit risks cracking the hermetic glass seal or degrading the metallurgical bond, compromising long-term reliability and parameter stability.
How does the temperature coefficient of 1N5270CRL affect its performance in a 0°C to 70°C environment?
With a temperature coefficient of +0.099 %/°C, the 1N5270CRL exhibits a predictable positive drift: over a 70°C span, its zener voltage increases by approximately 0.69 V (91 V × 0.00099 × 70). This behavior is fully characterized and usable for compensation in precision references; it does not indicate instability but rather a known, linear parameter shift aligned with JEDEC test conditions in the 125°C range.
1N5270CRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
1N5270CRL FAQ
1.How can I place an order for 1N5270CRL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5270CRL 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 1N5270CRL reliable?
The price and inventory of 1N5270CRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5270CRL is usually 5 days.
3.What payment methods are accepted for 1N5270CRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5270CRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5270CRL?
1N5270CRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5270CRL 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 1N5270CRL?
For technical support, including 1N5270CRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5270CRL requirements.
6.How does Aetrix verify that 1N5270CRL is sourced from the original manufacturer or authorized distributors?
All 1N5270CRL 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 1N5270CRL meets industry standards.
7.What is the process for return or replacement of 1N5270CRL?
All 1N5270CRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5270CRL, 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 1N5270CRL part is unused and in its original packaging.
Return procedure for 1N5270CRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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