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Renesas HZS36-2TD-E
- Part No.:
- HZS36-2TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS36-2TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:10,800
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Product details
Overview
HZS36-2TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in stabilized power supplies, featuring a nominal zener voltage of 36.4–38.0 V at 2 mA test current, 400 mW maximum power dissipation, and low dynamic resistance of 140 Ω - deployed in industrial control power rails and analog sensor biasing circuits.
For engineers reviewing the HZS36-2TD-E datasheet, HZS36-2TD-E pinout, HZS36-2TD-E application, or HZS36-2TD-E equivalent, this device serves as a discrete voltage reference with tight VZ tolerance, temperature-stable operation up to +200°C junction temperature, and compatibility with 5 mm-pitch automated insertion processes.
Technical Context
This Zener diode operates in reverse breakdown mode with DC-tested characteristics, delivering stable reference voltage under fixed current conditions. Its planar construction ensures reproducible breakdown behavior and low leakage current (≤1 µA at VR = 0.5 V).
The device exhibits a negative zener voltage temperature coefficient (−0.06 to −0.08 %/°C) typical for 36 V-class Zeners, enabling predictable drift compensation in temperature-sensitive designs. Thermal derating follows a linear curve down to zero power at +125°C ambient per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36.4–38.0 V at IZ = 2 mA - defines precise clamping threshold for overvoltage protection and reference generation. |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - sets thermal design margin for PCB copper area and ambient cooling requirements. |
| Dynamic Resistance (rd) | 140 Ω max at IZ = 2 mA - determines output impedance and load regulation sensitivity in shunt regulator topologies. |
| Reverse Leakage (IR) | ≤1 µA at VR = 0.5 V - minimizes standby current loss in battery-backed or low-power monitoring circuits. |
| Junction Temperature (Tj) | −55 to +200°C - supports operation in high-temperature industrial environments without derating penalties. |
| Package Type | MHD (Mini-High-Density) - surface-mount compatible leadframe package with 5 mm pitch suitability for automated assembly. |
Pinout & Package
MHD package: axial-leaded, epoxy-molded, cathode band marked on body; dimensions L = 26.0 mm, φD = 2.0 mm, E = 2.4 mm; mass ≈ 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Breakdown Anode Connection | Connected to regulated positive rail; reverse-biased terminal where Zener conduction occurs. |
| 2 (Anode) | Reference Ground Node | Tied to circuit common; establishes reference potential for voltage stabilization relative to cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Low Zener Impedance | 140 Ω max enables tight regulation under varying load currents in shunt reference applications. |
| Wide VZ Range Coverage | 36.4–38.0 V span supports compliance with legacy 36 V system rails and industrial 24/48 V DC distribution standards. |
| High Junction Temperature Rating | +200°C Tj allows deployment in engine control units, motor drives, and enclosed power modules without thermal throttling. |
| Automated Insertion Compatibility | 5 mm pitch design aligns with standard high-speed pick-and-place equipment for cost-effective SMT-style through-hole assembly. |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
|
Use Scenario: Stabilizing auxiliary 36 V bias rail in PLC I/O module power stage. IC Role / Device Role / Timing Role: Shunt voltage reference providing feedback setpoint to TL431-based error amplifier. Use Value: Maintains ±1.5% output accuracy across −40 to +85°C ambient due to predictable VZ drift and low rd. |
Use Scenario: Clamping transient spikes on 36 V CAN bus power line during load dump events. IC Role / Device Role / Timing Role: Fast-acting crowbar element diverting surge energy before downstream DC-DC converter input stage. Use Value: Withstands 400 mW peak pulse power and recovers within microseconds post-spike without parameter shift. |
| Analog Sensor Excitation | Legacy Equipment Voltage Reference |
|
Use Scenario: Providing stable excitation voltage to 350 Ω strain gauge bridge in weigh scale transducer. IC Role / Device Role / Timing Role: Precision DC reference source replacing bulkier IC-based solutions in space-constrained enclosures. Use Value: Delivers <10 ppm/°C effective tempco when combined with series resistor trimming, meeting Class III metrology requirements. |
Use Scenario: Replacing obsolete 36 V Zener in field-repair of 1990s-era CNC machine controller power supply. IC Role / Device Role / Timing Role: Drop-in mechanical and electrical replacement maintaining original board layout and BOM continuity. Use Value: Identical MHD package footprint and pinout ensures zero rework; same VZ grade (−2) guarantees functional equivalence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A | VZ = 24 V (nom), Pd = 1 W, DO-41 package - higher power but lower voltage rating. | Not suitable for 36 V systems; requires redesign of series resistor and thermal layout. | Select only if upgrading to higher-power 24 V reference with board-level heatsinking capability. |
| BZX84-C36 | VZ = 36 V (nom), Pd = 300 mW, SOT-23 package - smaller size but 25% lower power rating. | Limited to low-current references (<5 mA); unsuitable for >100 mA shunt regulation. | Choose for space-constrained PCBs where 300 mW suffices and surface-mount assembly is mandatory. |
Compared with 1N4749A and BZX84-C36, the HZS36-2TD-E uniquely balances 36 V-class regulation, 400 mW dissipation, and through-hole MHD packaging - making it optimal for industrial power supplies requiring mechanical robustness and thermal headroom without SMT conversion.
Availability
HZS36-2TD-E is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded power management requiring stable component supply across long-lifecycle programs.
Supply support for HZS36-2TD-E 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The HZS Series was developed as a family of precision silicon planar Zener diodes targeting high-reliability stabilized power supplies and voltage reference applications in harsh-environment electronics.
FAQ
What is the exact zener voltage range specified for HZS36-2TD-E?
The HZS36-2TD-E has a guaranteed zener voltage range of 36.4 V to 38.0 V when tested at IZ = 2 mA and Ta = 25°C, corresponding to the "−2" grade in the HZS36 family per Renesas datasheet REJ03G0184-0500 Rev.5.00. This tolerance band ensures consistent performance in precision regulation circuits without post-selection calibration.
Does HZS36-2TD-E support automatic insertion equipment?
Yes, the HZS36-2TD-E is explicitly designed for 5 mm-pitch high-speed automatic insertion per its datasheet, leveraging the standardized MHD package geometry and lead spacing. Its axial-leaded form factor and 26 mm body length comply with industry-standard feeder tape and placement nozzle specifications used in industrial electronics manufacturing lines.
What is the maximum allowable junction temperature for HZS36-2TD-E?
The absolute maximum junction temperature for HZS36-2TD-E is +200°C, as stated in the Absolute Maximum Ratings table of the official Renesas datasheet. This rating permits operation in high-temperature environments such as motor drive cabinets or under-hood automotive modules, provided PCB thermal design maintains Tj ≤ 200°C under worst-case power dissipation.
How does the dynamic resistance of HZS36-2TD-E affect regulation accuracy?
The HZS36-2TD-E specifies a maximum dynamic resistance of 140 Ω at IZ = 2 mA, directly impacting load regulation: a 10 mA change in shunt current causes up to 1.4 V variation in output voltage. Designers must pair it with sufficient series resistance and low-noise biasing to maintain stability in sensitive analog references or feedback networks.
Is HZS36-2TD-E RoHS compliant?
Yes, HZS36-2TD-E complies with the EU RoHS Directive as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits, and is suitable for use in environmentally regulated industrial and consumer products.
HZS36-2TD-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- 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:
- -
HZS36-2TD-E FAQ
1.How can I place an order for HZS36-2TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS36-2TD-E 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 HZS36-2TD-E reliable?
The price and inventory of HZS36-2TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS36-2TD-E is usually 5 days.
3.What payment methods are accepted for HZS36-2TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS36-2TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS36-2TD-E?
HZS36-2TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS36-2TD-E 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 HZS36-2TD-E?
For technical support, including HZS36-2TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS36-2TD-E requirements.
6.How does Aetrix verify that HZS36-2TD-E is sourced from the original manufacturer or authorized distributors?
All HZS36-2TD-E 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 HZS36-2TD-E meets industry standards.
7.What is the process for return or replacement of HZS36-2TD-E?
All HZS36-2TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS36-2TD-E, 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 HZS36-2TD-E part is unused and in its original packaging.
Return procedure for HZS36-2TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS36-2TD-E Tags
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