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Renesas HZS7C2TD-E
- Part No.:
- HZS7C2TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7C2TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:17,222
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Product details
Overview
HZS7C2TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies. It delivers a nominal zener voltage of 7.5 V to 7.9 V at 5 mA test current, with dynamic resistance of 15 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 200°C. It is commonly used in reference voltage generation for analog sensor interfaces and microcontroller reset circuits.
For engineers reviewing the HZS7C2TD-E datasheet, HZS7C2TD-E pinout, HZS7C2TD-E application, or HZS7C2TD-E equivalent, key selection criteria include zener voltage tolerance (±0.4 V), low dynamic impedance for stable regulation under load variation, thermal robustness for high-ambient environments, and compatibility with 5 mm-pitch automated insertion processes.
Technical Context
The HZS7C2TD-E operates as a two-terminal voltage reference device using reverse-biased PN junction breakdown. Its zener voltage is specified at 5 mA DC test current, with reverse current limited to 1 µA at VR = 3.5 V, ensuring low leakage in standby modes. The device exhibits a negative temperature coefficient typical of low-voltage zeners in this range.
It is fabricated using silicon planar process technology, enabling tight VZ grading (C2 grade), consistent rd performance, and reliable operation across −55°C to +175°C storage temperature. The MHD package supports high-speed automatic insertion and provides mechanical stability for board-level reliability in industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V to 7.9 V at IZ = 5 mA - defines stable regulation point for 7.7 V nominal reference applications |
| Dynamic Resistance (rd) | 15 Ω max at IZ = 5 mA - ensures minimal output voltage shift under ±1 mA load current change |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Junction Temperature (Tj) | 200°C max - enables use in high-temperature industrial enclosures or near power components |
| Reverse Current (IR) | 1 µA max at VR = 3.5 V - guarantees low quiescent current in battery-backed or energy-sensitive circuits |
| Storage Temperature | −55°C to +175°C - compatible with extended industrial and automotive under-hood environments |
Pinout & Package
The HZS7C2TD-E is housed in the MHD package (JEITA code GRZZ0002ZC-A), a radial leaded, epoxy-molded, 2-pin through-hole device with cathode band marking. Dimensions: φD = 2.0 mm, E = 2.4 mm, L = 26.0 mm, mass ≈ 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to regulated positive rail; polarity must be observed to avoid forward conduction and regulation failure |
| 2 (Anode) | Reference/ground terminal | Typically tied to circuit ground or common return; establishes reference potential for VZ measurement |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 15 Ω max ensures <±15 mV output shift under ±1 mA load transients - critical for ADC reference stability |
| C2-grade voltage tolerance | ±0.4 V window (7.5–7.9 V) enables precise binning for multi-rail systems requiring matched references |
| 400 mW power rating | Supports 7.7 V @ ~52 mA continuous dissipation - sufficient for local regulation in sensor signal chains |
| 5 mm pitch compatibility | Optimized lead spacing allows direct integration into high-volume automated assembly lines without retooling |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Providing stable 7.7 V reference for op-amp-based bridge sensor amplifiers in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference to set gain and offset calibration points. Use Value: Low rd minimizes drift under varying sensor excitation current, maintaining <0.1% full-scale accuracy over temperature. |
Use Scenario: Generating clean, noise-immune reset threshold for 3.3 V microcontrollers in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Shunt regulator establishing precise brown-out detection level via resistor divider. Use Value: Tight VZ tolerance ensures deterministic reset activation at 7.7 V ±0.4 V, preventing spurious reboots during line fluctuations. |
| Low-Power Analog Front-End | Embedded Power Sequencing |
|
Use Scenario: Biasing JFET input stages in portable medical ECG amplifier modules operating from coin-cell batteries. IC Role / Device Role / Timing Role: Low-leakage (1 µA max) voltage clamp protecting input rails during sleep mode. Use Value: Ultra-low IR extends battery life beyond 5 years in always-on monitoring devices. |
Use Scenario: Enabling controlled power-up sequencing between 12 V auxiliary and 5 V core rails in industrial gateways. IC Role / Device Role / Timing Role: Zener-based voltage monitor triggering enable signals via comparator input. Use Value: Stable 7.7 V threshold ensures repeatable turn-on timing across −40°C to +85°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C7V5 (ON Semiconductor) | VZ = 7.5 V ±5%, rd = 15 Ω max, Pd = 500 mW, DO-35 package | Higher power rating but wider VZ tolerance; less suitable for precision reference use | Preferred where higher surge capability is needed and ±5% VZ is acceptable |
| MMSZ5234B (Diodes Inc.) | VZ = 7.5 V ±5%, rd = 15 Ω max, Pd = 350 mW, SOD-123 surface-mount | Smaller footprint and lower power; lacks through-hole MHD mechanical robustness | Selected when board space is constrained and automated optical inspection (AOI) is required |
Compared with BZX55C7V5 and MMSZ5234B, the HZS7C2TD-E offers tighter C2-grade VZ tolerance (±0.4 V vs. ±5%), identical dynamic impedance, and through-hole MHD packaging optimized for high-reliability industrial assembly - making it preferable for precision-stable reference roles where mechanical retention and voltage accuracy are jointly critical.
Availability
HZS7C2TD-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reset circuits, low-power analog front-ends, and embedded power sequencing requiring stable component supply with guaranteed long-term continuity.
Supply support for HZS7C2TD-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 as a family of precision silicon planar Zener diodes targeting cost-effective, high-stability voltage reference needs in industrial power management and analog signal conditioning applications.
FAQ
What is the exact zener voltage range for HZS7C2TD-E?
The HZS7C2TD-E has a guaranteed zener voltage range of 7.5 V to 7.9 V when tested at IZ = 5 mA and Ta = 25°C. This C2-grade specification reflects tight binning for applications demanding precise reference levels, and the value remains stable within this window across its rated operating temperature range.
Does HZS7C2TD-E support high-temperature operation?
Yes, the HZS7C2TD-E is rated for junction temperatures up to 200°C and storage temperatures from −55°C to +175°C. Its silicon planar construction and MHD package enable reliable operation in industrial control cabinets, motor drive enclosures, and other high-ambient environments where standard diodes may derate prematurely.
What is the dynamic resistance of HZS7C2TD-E and why does it matter?
The HZS7C2TD-E has a maximum dynamic resistance (rd) of 15 Ω at IZ = 5 mA. This low value means the output voltage changes by only ~15 mV per 1 mA change in load current - essential for maintaining regulation accuracy in analog circuits like sensor references or reset thresholds where load variations occur.
Can HZS7C2TD-E be used in surface-mount designs?
No - the HZS7C2TD-E uses the radial-lead MHD through-hole package (JEITA GRZZ0002ZC-A). It is not a surface-mount device. For SMT equivalents, consider alternatives like MMSZ5234B; however, those differ in voltage tolerance, power rating, and thermal characteristics compared to the HZS7C2TD-E.
Is HZS7C2TD-E RoHS compliant?
Yes, HZS7C2TD-E complies with the EU RoHS Directive. Renesas Electronics confirms environmental compliance for the HZS Series in accordance with applicable regulations, including restriction of lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE substances - verified per material declarations and manufacturing controls.
HZS7C2TD-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:
- -
HZS7C2TD-E FAQ
1.How can I place an order for HZS7C2TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7C2TD-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 HZS7C2TD-E reliable?
The price and inventory of HZS7C2TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7C2TD-E is usually 5 days.
3.What payment methods are accepted for HZS7C2TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7C2TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7C2TD-E?
HZS7C2TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7C2TD-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 HZS7C2TD-E?
For technical support, including HZS7C2TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7C2TD-E requirements.
6.How does Aetrix verify that HZS7C2TD-E is sourced from the original manufacturer or authorized distributors?
All HZS7C2TD-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 HZS7C2TD-E meets industry standards.
7.What is the process for return or replacement of HZS7C2TD-E?
All HZS7C2TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7C2TD-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 HZS7C2TD-E part is unused and in its original packaging.
Return procedure for HZS7C2TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS7C2TD-E Tags
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