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Renesas HZK27TR-S-E
- Part No.:
- HZK27TR-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK27TR-S-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
HZK27TR-S-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for voltage regulation and stabilization in low-power supply circuits, with a nominal zener voltage of 27 V (min 25.2 V, max 28.6 V), 2 mA test current, 80 Ω dynamic resistance, 500 mW power dissipation, and LLD surface-mount package. It serves in precision reference and overvoltage protection roles within industrial power supplies and sensor interface circuitry.
For engineers reviewing the HZK27TR-S-E datasheet, HZK27TR-S-E pinout, HZK27TR-S-E application, or HZK27TR-S-E equivalent, key selection criteria include verified zener voltage tolerance (±6.3% at 2 mA), temperature coefficient (≈+14 mV/°C), low leakage (<1 µA at 21 V), LLD package footprint compatibility, and compliance with Renesas' Standard quality grade for industrial equipment.
Technical Context
The HZK27TR-S-E operates as a two-terminal voltage reference device using silicon epitaxial planar junction technology, optimized for stable DC regulation under reverse-biased conditions. Its zener breakdown mechanism delivers predictable clamping behavior with low dynamic impedance (80 Ω at 2 mA) and minimal temperature drift above 6 V.
This diode is specified for operation from –55°C to +175°C junction temperature, with absolute maximum ratings including 500 mW power dissipation on PCB and storage temperature range matching operational limits. It is not rated for automotive or safety-critical applications per Renesas' quality grading system.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.2–28.6 V at IZ = 2 mA - defines stable regulation window for mid-range DC rails |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Reverse Leakage Current | <1 µA at VR = 21 V - ensures minimal quiescent power loss in standby mode |
| Power Dissipation (Pd) | 500 mW at Ta = 25°C - sets thermal derating limit for PCB-mounted operation |
| Junction Temperature (Tj) | –55°C to +175°C - supports wide ambient operation in industrial enclosures |
| Package | LLD - 2-pin surface-mount outline with cathode band marking, 0.027 g mass |
Pinout & Package
LLD package: ultra-compact, leadless, surface-mount diode housing with molded epoxy body and visible cathode band. Dimensions: φ1.4 ±0.1 mm diameter, height 3.5 mm, typical mass 0.027 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; accepts reverse bias for zener conduction |
| 2 | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 80 Ω enables tight voltage regulation under varying load currents |
| Wide zener voltage spectrum | 27 V rating fits mid-range industrial supply monitoring and clamp thresholds |
| High junction temperature rating | 175°C Tj allows deployment in thermally constrained environments |
| LLD surface-mount package | Enables high-density PCB layout and compatibility with automated pick-and-place assembly |
Applications
| Voltage Reference for Sensor Signal Conditioning | Overvoltage Clamp in Industrial I/O Modules |
|---|---|
Use Scenario: Provides stable 27 V reference for analog front-end gain calibration in pressure and temperature transmitters. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing fixed bias point for op-amp offset correction. Use Value: Maintains <±0.5% reference stability across –40°C to +85°C ambient due to predictable zener temperature coefficient. | Use Scenario: Clamps transient surges on 24 V DC fieldbus lines in PLC digital input cards. IC Role / Device Role / Timing Role: Protective shunt element diverting excess energy to ground during ESD or inductive kick events. Use Value: Responds within nanoseconds to overvoltage events up to 30 V, limiting downstream IC stress without crowbar action. |
| DC Power Supply Feedback Divider | Microcontroller Reset Threshold Stabilization |
Use Scenario: Sets precise feedback threshold in isolated flyback converter secondary-side regulation loop. IC Role / Device Role / Timing Role: Precision voltage node defining error amplifier reference for optocoupler-driven feedback. Use Value: Enables ±2% output voltage accuracy over line/load/temperature with minimal external component count. | Use Scenario: Generates reliable reset signal threshold for 3.3 V microcontrollers powered from 24 V intermediate rail. IC Role / Device Role / Timing Role: Zener-based voltage divider leg establishing clean, noise-immune reset activation level. Use Value: Delivers consistent 27 V trigger point independent of supply ripple, preventing spurious resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27LT1G | 27 V ±5%, 300 mW Pd, SOT-23 package, 90 Ω rd | Lower power rating and higher dynamic impedance reduce regulation accuracy in high-current scenarios | Preferred where board space is critical and power demand stays below 150 mW |
| MMBZ5256BS-7-F | 27 V ±5%, 200 mW Pd, SOT-323 package, 100 Ω rd | Reduced thermal mass and lower Pd limit continuous dissipation in compact layouts | Suitable for low-duty-cycle clamping where peak pulse energy dominates average power |
Compared with HZK27TR-S-E, both alternatives offer tighter voltage tolerance but significantly lower power handling and higher dynamic impedance-making them less suitable for sustained regulation or high-energy transient suppression in industrial 24 V systems.
Availability
HZK27TR-S-E is available at Aetrix Electronics and suitable for industrial power supplies, sensor signal conditioning circuits, and programmable logic controller I/O protection requiring stable component supply, long-term lifecycle support, and traceable sourcing from Renesas Electronics.
Supply support for HZK27TR-S-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
The HZK Series belongs to Renesas' legacy discrete Zener diode product line, engineered specifically for stabilized DC power supply applications in standard-grade industrial equipment such as test instruments, factory automation controllers, and office machinery.
FAQ
What is the zener voltage tolerance of HZK27TR-S-E?
The HZK27TR-S-E has a zener voltage range of 25.2 V to 28.6 V at 2 mA test current, corresponding to ±6.3% tolerance about the nominal 27 V rating. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the Renesas HZK Series datasheet Rev.3.00. The HZK27TR-S-E does not carry an A/B/C grade suffix, indicating it meets the base specification without tighter binning.
Is HZK27TR-S-E RoHS compliant?
Yes, HZK27TR-S-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), and is rated for Standard quality grade use in office and industrial equipment per Renesas' published guidelines.
What is the thermal derating behavior of HZK27TR-S-E above 25°C?
HZK27TR-S-E exhibits linear thermal derating from its 500 mW maximum power dissipation at 25°C ambient, dropping to zero at approximately 150°C ambient temperature as shown in Figure 3 of the datasheet. Derating slope is ~3.3 mW/°C, meaning at 75°C ambient, usable power drops to ~335 mW. This behavior assumes mounting on a standard 15 × 20 × 1.6 mm glass epoxy PCB.
Can HZK27TR-S-E be used in automotive applications?
No, HZK27TR-S-E is classified as a Standard quality grade device per Renesas' quality grading system and is explicitly intended for computers, office equipment, industrial robots, and home appliances-not transportation or safety-critical systems. It lacks AEC-Q200 qualification, extended temperature validation, or automotive-specific reliability testing required for vehicle use.
What does the "TR-S-E" suffix indicate in HZK27TR-S-E?
The "TR-S-E" suffix denotes tape-and-reel packaging (TR), standard-grade quality (S), and RoHS-compliant lead-free finish (E). This matches Renesas' standard ordering code convention for the HZK Series, confirming the part is supplied in 3,000-unit reels with Pb-free terminations and meets Standard quality requirements for industrial applications.
HZK27TR-S-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:
- -
HZK27TR-S-E FAQ
1.How can I place an order for HZK27TR-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK27TR-S-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 HZK27TR-S-E reliable?
The price and inventory of HZK27TR-S-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZK27TR-S-E is usually 5 days.
3.What payment methods are accepted for HZK27TR-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK27TR-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK27TR-S-E?
HZK27TR-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK27TR-S-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 HZK27TR-S-E?
For technical support, including HZK27TR-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK27TR-S-E requirements.
6.How does Aetrix verify that HZK27TR-S-E is sourced from the original manufacturer or authorized distributors?
All HZK27TR-S-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 HZK27TR-S-E meets industry standards.
7.What is the process for return or replacement of HZK27TR-S-E?
All HZK27TR-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK27TR-S-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 HZK27TR-S-E part is unused and in its original packaging.
Return procedure for HZK27TR-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZK27TR-S-E Tags
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MM5Z5V1ST1G
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