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onsemi BZX55C36_T50A
- Part No.:
- BZX55C36_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX55C36_T50A.pdf
- Description:
- DIODE ZENER 36V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:2,046
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Product details
Overview
BZX55C36_T50A from Fairchild Semiconductor is a 36 V ±5% tolerance silicon Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 80 Ω dynamic impedance at 5 mA test current and 0.1 μA maximum reverse leakage at 28.8 V. It provides precise voltage regulation in low-power reference and protection circuits.
For engineers reviewing the BZX55C36_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, thermal derating behavior, cathode identification via band marking, and compatibility with through-hole PCB layouts requiring DO-35 footprint compliance.
Technical Context
The BZX55C36_T50A operates as a two-terminal voltage reference device, maintaining stable reverse breakdown at nominal 36 V across its cathode-anode terminals under controlled current conditions. Its 5% tolerance and 80 Ω dynamic impedance (ZZ) at IZ = 5 mA define precision limits for feedback and clamping applications.
Designed for operation from –65°C to +200°C junction/storage temperature range, it follows standard DO-35 mechanical form factor with cathode indicated by color band. Forward voltage is specified ≤1.3 V at 100 mA, confirming standard silicon PN junction behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34.0–38.0 V at IZ = 5 mA; defines regulated output voltage window for reference design |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C; sets maximum continuous thermal load without derating |
| Dynamic Impedance (ZZ) | 80 Ω @ IZ = 5 mA; determines voltage regulation sensitivity to current variation |
| Reverse Leakage (IR) | ≤0.1 μA @ VR = 28.8 V; ensures minimal quiescent current in standby clamp circuits |
| Max Zener Current (IZM) | 27 mA; derived from power limit and actual VZ, constrains peak surge handling capability |
| Operating Temp Range | –65°C to +200°C; supports deployment in automotive under-hood and industrial high-temp environments |
| Forward Voltage (VF) | ≤1.3 V @ IF = 100 mA; confirms standard silicon diode conduction behavior in forward bias |
Pinout & Package
DO-35 glass axial package with cathode identified by single color band; no discrete pins - anode and cathode are axial leads with polarity marked on body.
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener Tolerance | Enables predictable voltage setting without post-assembly trimming in cost-sensitive references |
| DO-35 Glass Package | Provides hermetic sealing and thermal stability for long-term parameter consistency |
| 500 mW Power Rating | Supports regulation in low-to-medium power analog supplies and overvoltage protectors |
| Cathode Band Marking | Ensures unambiguous polarity identification during manual or automated assembly |
Applications
| Voltage Reference for Op-Amp Circuits | Overvoltage Clamp in Sensor Interfaces |
|---|---|
Use Scenario: Stable 36 V reference for precision op-amp biasing and ADC reference scaling in industrial signal conditioning modules. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing fixed DC potential independent of supply fluctuations. Use Value: Maintains 34–38 V regulation window with <0.1 μA leakage, minimizing loading error on high-impedance feedback nodes. | Use Scenario: Clamping transient spikes above 36 V on 24 V sensor supply rails in factory automation I/O modules. IC Role / Device Role / Timing Role: Reverse-biased shunt protector diverting excess energy to ground when input exceeds VZ. Use Value: Limits voltage excursions to safe levels using 80 Ω dynamic impedance, preventing downstream IC damage without active control. |
| Low-Power Supply Regulation | ESD Protection Element |
Use Scenario: Regulating auxiliary 36 V rail in battery-powered instrumentation where efficiency and size are constrained. IC Role / Device Role / Timing Role: Shunt regulator absorbing excess current to hold output voltage constant under varying load. Use Value: Delivers stable regulation at 5 mA test point with 500 mW thermal budget, enabling compact heatsink-free designs. | Use Scenario: Secondary ESD protection on 36 V-rated communication lines exposed to human contact in medical handheld devices. IC Role / Device Role / Timing Role: Passive clamping element triggered only during overvoltage events exceeding VZ threshold. Use Value: Provides fast response (<1 ns typical) and low leakage (0.1 μA), preserving signal integrity during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5241B | Same 36 V nominal rating, ±5% tolerance, but rated 500 mW in DO-35 with 80 Ω ZZ at 5 mA - identical electrical envelope | No functional difference; validated for same reference and clamp roles | Select when dual-sourcing required or legacy 1N-series BOM alignment needed |
| MMSZ5241ET1G | Surface-mount SOD-123 package, same 36 V/±5%/500 mW spec, but 90 Ω ZZ at 20 mA test current - higher current test point shifts impedance interpretation | Requires PCB redesign for SMT placement; unsuitable for through-hole legacy systems | Choose for space-constrained boards where DO-35 footprint is unavailable |
Compared with 1N5241B and MMSZ5241ET1G, the BZX55C36_T50A offers identical voltage regulation performance in through-hole DO-35 format, while differing in package fit and test-current-defined impedance - critical for matching legacy thermal and layout constraints.
Availability
BZX55C36_T50A is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and low-power supply regulation requiring stable component supply across industrial control, sensor interface, and portable instrumentation designs.
Supply support for BZX55C36_T50A 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.
The BZX55 series was developed as a general-purpose Zener diode family targeting cost-effective, reliable voltage regulation and transient suppression in consumer, industrial, and automotive electronics.
FAQ
What is the nominal Zener voltage and tolerance of the BZX55C36_T50A?
The BZX55C36_T50A has a nominal Zener voltage of 36 V with a tolerance of ±5%, resulting in a guaranteed breakdown range of 34.0 V to 38.0 V when tested at 5 mA. This specification is confirmed in the Fairchild BZX55C2V4–BZX55C56 datasheet Rev. D1, Table "Electrical Characteristics" for device BZX55C36. The BZX55C36_T50A maintains this voltage window under standard thermal conditions (Ta = 25°C, TL ≤ 75°C).
What package type and marking does the BZX55C36_T50A use?
The BZX55C36_T50A uses a DO-35 glass axial package with cathode identified by a single color band near one lead end. Per Fairchild's top-marking specification, the second line reads "5C" and the third line reads "36", denoting the BZX55C series and nominal voltage. The BZX55C36_T50A conforms to JEDEC DO-35 mechanical dimensions and thermal profiles defined in the same datasheet.
What is the maximum power dissipation and thermal derating for the BZX55C36_T50A?
The BZX55C36_T50A is rated for 500 mW power dissipation at lead temperature (TL) ≤ 75°C with 3/8″ lead length. Above 75°C, it derates linearly at 4.0 mW/°C. This thermal profile is specified in the "Absolute Maximum Ratings" table of the Fairchild datasheet and applies directly to the BZX55C36_T50A under standard mounting conditions.
What is the dynamic impedance and test current for the BZX55C36_T50A?
The BZX55C36_T50A exhibits a dynamic impedance (ZZ) of 80 Ω measured at a test current (IZ) of 5 mA. This value reflects the small-signal AC resistance around the Zener operating point and is critical for evaluating regulation accuracy under varying load. The BZX55C36_T50A's ZZ is consistent with the full BZX55C series' design for stable low-current reference use.
Does the BZX55C36_T50A have a specified forward voltage?
Yes, the BZX55C36_T50A has a maximum forward voltage (VF) of 1.3 V at forward current (IF) = 100 mA, per the "Electrical Characteristics" section of the Fairchild datasheet. This VF specification confirms standard silicon PN junction behavior and supports use in dual-role applications such as reverse-biased regulation and forward-biased rectification or logic-level detection, though the BZX55C36_T50A is optimized for Zener operation.
BZX55C36_T50A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 27 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 100 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
BZX55C36_T50A FAQ
1.How can I place an order for BZX55C36_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX55C36_T50A 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 BZX55C36_T50A reliable?
The price and inventory of BZX55C36_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX55C36_T50A is usually 5 days.
3.What payment methods are accepted for BZX55C36_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX55C36_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX55C36_T50A?
BZX55C36_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX55C36_T50A 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 BZX55C36_T50A?
For technical support, including BZX55C36_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX55C36_T50A requirements.
6.How does Aetrix verify that BZX55C36_T50A is sourced from the original manufacturer or authorized distributors?
All BZX55C36_T50A 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 BZX55C36_T50A meets industry standards.
7.What is the process for return or replacement of BZX55C36_T50A?
All BZX55C36_T50A units undergo pre-shipment inspection (PSI). If there is an issue with BZX55C36_T50A, 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 BZX55C36_T50A part is unused and in its original packaging.
Return procedure for BZX55C36_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX55C36_T50A Tags
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