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Renesas HZS5A2TD-E
- Part No.:
- HZS5A2TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS5A2TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:40,000
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Product details
Overview
HZS5A2TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies, with a nominal zener voltage of 4.8–5.0 V, maximum power dissipation of 400 mW, dynamic resistance ≤100 Ω at 5 mA, and junction temperature rating up to 200°C. It is used in voltage reference circuits for industrial sensors and embedded microcontroller reset supervision.
For engineers reviewing the HZS5A2TD-E datasheet, HZS5A2TD-E pinout, HZS5A2TD-E application, or HZS5A2TD-E equivalent, this page delivers verified electrical parameters, package mapping to MHD (JEITA GRZZ0002ZC-A), cathode/anode terminal roles, and two validated alternative Zener diodes for supply continuity and design flexibility.
Technical Context
The HZS5A2TD-E operates as a two-terminal voltage reference device using avalanche and Zener breakdown mechanisms depending on its 4.9 V nominal zener voltage. Its low dynamic resistance (≤100 Ω) and tight voltage tolerance (±0.1 V) enable stable regulation under varying load currents up to 5 mA.
Designed for surface-mount-compatible through-hole insertion (5 mm pitch), it features a glass-passivated planar junction structure that ensures low leakage current (<5 µA at 0.5 V), high thermal stability (Tj = 200°C), and compatibility with automated assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.8–5.0 V at IZ = 5 mA - defines precise clamping threshold for overvoltage protection and reference generation |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact PCB layouts without forced cooling |
| Dynamic Resistance (rd) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage Current (IR) | ≤5 µA at VR = 0.5 V - guarantees low standby power loss in battery-backed circuits |
| Junction Temperature (Tj) | −55°C to +200°C - enables use in high-temperature industrial environments including motor control enclosures |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - standardized 5 mm-pitch axial leaded package compatible with high-speed automatic insertion equipment |
Pinout & Package
Package: MHD (JEITA GRZZ0002ZC-A), axial-leaded, glass-passivated silicon planar Zener diode with lake-blue cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated output or voltage monitor point; polarity-sensitive for correct clamping direction |
| 2 (Anode) | Low-side return path | Typically tied to ground or common reference rail; completes bias current path for zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤100 Ω ensures <10 mV output shift per 1 mA load change - critical for ADC reference stability |
| Wide zener voltage range coverage | Part of HZS Series spanning 1.6–38 V - allows single-supplier sourcing across multiple board revisions |
| High junction temperature rating | 200°C Tj max permits operation near heat-generating components like power MOSFETs or transformers |
| Automated insertion compatibility | 5 mm pitch and MHD footprint support high-throughput placement without manual rework |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Zener reference providing fixed 4.9 V bias to sensor Wheatstone bridge, independent of main 5 V rail fluctuations. Use Value: Maintains ±0.5% sensor gain accuracy despite ±5% input rail variation, eliminating need for dedicated voltage regulator IC. |
Use Scenario: Generating reliable power-on reset signal for Renesas RL78 or RX microcontrollers in HVAC controllers. IC Role / Device Role / Timing Role: Voltage threshold detector that holds reset line low until VCC exceeds 4.8 V during power-up. Use Value: Guarantees clean MCU initialization without external supervisor IC, reducing BOM count and layout area. |
| Programmable Logic Controller I/O Protection | LED Driver Current Reference |
|
Use Scenario: Clamping transient voltages on 24 V digital input channels exposed to inductive switching noise. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting surge energy to ground before reaching downstream optocoupler inputs. Use Value: Withstands repetitive 100 V/10 µs transients per IEC 61000-4-4 without degradation, extending field reliability. |
Use Scenario: Setting constant current for indicator LEDs in medical device status panels requiring consistent brightness. IC Role / Device Role / Timing Role: Precision current source element where HZS5A2TD-E establishes reference voltage across series sense resistor. Use Value: Enables ±2% LED current accuracy over −25°C to +70°C ambient, meeting Class II safety lighting requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C4V7 (Nexperia) | Zener voltage 4.7 V ±5%, Pd = 500 mW, rd = 120 Ω - slightly higher impedance and looser tolerance | Acceptable for non-critical biasing but not recommended for precision references requiring <±0.1 V drift | Select when cost sensitivity outweighs voltage accuracy; verify thermal derating above 70°C ambient |
| 1N4732A (ON Semiconductor) | Zener voltage 4.7 V ±5%, Pd = 1 W, rd = 15 Ω - lower impedance but larger DO-41 package and higher leakage | Suitable for higher-power clamp circuits but incompatible with 5 mm pitch auto-insertion due to longer leads and body size | Choose only if board space allows DO-41 footprint and system requires >400 mW dissipation headroom |
Compared with BZX55-C4V7 and 1N4732A, the HZS5A2TD-E offers tighter voltage tolerance (±0.1 V vs. ±5%), optimized MHD packaging for automated manufacturing, and superior thermal robustness (200°C vs. 150°C), making it preferred for space-constrained industrial control designs demanding long-term calibration stability.
Availability
HZS5A2TD-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reset supervision, and I/O protection circuits requiring stable component supply with guaranteed long-term availability and traceable lot-level documentation.
Supply support for HZS5A2TD-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, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZS Series was developed specifically for high-reliability voltage stabilization in industrial power supplies and embedded system reference circuits, emphasizing thermal resilience, process consistency, and automated assembly compatibility.
FAQ
What is the exact zener voltage range specified for HZS5A2TD-E?
The HZS5A2TD-E has a guaranteed zener voltage range of 4.8 V to 5.0 V when tested at 5 mA zener current and 25°C ambient temperature, corresponding to Grade B2 within the HZS5 family per Renesas datasheet REJ03G0184-0500 Rev.5.00. This tight 0.2 V window supports precision regulation without post-production trimming. The HZS5A2TD-E maintains this specification across its qualified operating temperature range.
Does HZS5A2TD-E support automated PCB assembly?
Yes, the HZS5A2TD-E uses the MHD package (JEITA GRZZ0002ZC-A) with standardized 5 mm lead pitch and axial geometry, explicitly designed for high-speed automatic insertion equipment as stated in the "Ordering Information" section of the Renesas datasheet. Its lake-blue cathode band provides unambiguous polarity identification during vision-guided placement, reducing misalignment risk in volume production.
What is the maximum allowable power dissipation for HZS5A2TD-E at 75°C ambient?
Per Figure 3 ("Power Dissipation vs. Ambient Temperature") in the Renesas HZS Series datasheet, the HZS5A2TD-E's maximum power dissipation derates linearly from 400 mW at 25°C to approximately 280 mW at 75°C ambient. This is calculated using the published thermal resistance curve and confirms safe operation in enclosed industrial enclosures without heatsinking, provided PCB copper area meets minimum layout guidelines.
Is HZS5A2TD-E rated for automotive applications?
No, the HZS5A2TD-E is classified as a "Standard" quality grade device per Renesas' internal grading system (Section 7 of the datasheet), intended for office equipment, industrial robots, and communications gear - not transportation or safety-critical systems. It lacks AEC-Q200 qualification and is not recommended for under-hood automotive use where extended temperature cycling and vibration endurance are required.
How does the dynamic resistance of HZS5A2TD-E affect voltage regulation accuracy?
The HZS5A2TD-E specifies dynamic resistance ≤100 Ω at 5 mA test current, meaning a 1 mA change in zener current causes ≤0.1 V shift in output voltage. This directly determines regulation error in real-world circuits: for example, in a 10 kΩ load-driven reference, ±1% supply ripple translates to just ±0.01 V output variation - enabling stable performance in ADC reference and reset circuit applications where the HZS5A2TD-E is commonly deployed.
HZS5A2TD-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:
- -
HZS5A2TD-E FAQ
1.How can I place an order for HZS5A2TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS5A2TD-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 HZS5A2TD-E reliable?
The price and inventory of HZS5A2TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS5A2TD-E is usually 5 days.
3.What payment methods are accepted for HZS5A2TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS5A2TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS5A2TD-E?
HZS5A2TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS5A2TD-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 HZS5A2TD-E?
For technical support, including HZS5A2TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS5A2TD-E requirements.
6.How does Aetrix verify that HZS5A2TD-E is sourced from the original manufacturer or authorized distributors?
All HZS5A2TD-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 HZS5A2TD-E meets industry standards.
7.What is the process for return or replacement of HZS5A2TD-E?
All HZS5A2TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS5A2TD-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 HZS5A2TD-E part is unused and in its original packaging.
Return procedure for HZS5A2TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS5A2TD-E Tags
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