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Renesas HZC27TRF-E
- Part No.:
- HZC27TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZC27TRF-E.pdf
- Description:
- DIODE ZENER
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Inventory:7,000
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Product details
Overview
HZC27TRF-E from Renesas Electronics is a silicon epitaxial planar Zener diode optimized for surge absorption in low-power signal-line protection circuits, featuring a nominal Zener voltage of 27 V (25.1–28.9 V), 2 mA test current, 70 Ω dynamic resistance, 0.5 µA reverse leakage at 21 V, and ESD capability of ±30 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω). It is used in USB data lines, sensor I/O interfaces, and microcontroller reset inputs.
For engineers reviewing the HZC27TRF-E datasheet, HZC27TRF-E pinout, HZC27TRF-E application, or HZC27TRF-E equivalent, key selection criteria include its ultra-small UFP package (SC-79), temperature coefficient of +0.07 %/°C, 150 mW power dissipation limit, and suitability for transient voltage suppression in space-constrained consumer and industrial electronics.
Technical Context
The HZC27TRF-E operates as a precision voltage reference and clamping device in reverse-biased mode, with Zener breakdown engineered for stable regulation under transient overvoltage events. Its epitaxial planar structure ensures tight VZ tolerance (±7%) and low dynamic impedance (70 Ω) at IZ = 2 mA.
Designed for surface-mount surge absorb applications, it exhibits a positive temperature coefficient (+0.07 %/°C) - typical for Zeners above ~5.6 V - enabling predictable drift behavior in ambient temperature ranges from −55°C to +150°C. The device is not intended for continuous power regulation but for short-duration pulse clamping per JEDEC JESD22-A114.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.1–28.9 V at IZ = 2 mA - defines clamping threshold for overvoltage protection on 24 V signal rails. |
| Dynamic Resistance (rd) | 70 Ω max at IZ = 2 mA - determines voltage rise under surge current; lower rd improves clamping accuracy. |
| Reverse Leakage (IR) | 0.5 µA max at VR = 21 V - ensures minimal standby current in always-on sensor interfaces. |
| Power Dissipation (Pd) | 150 mW at Ta = 25°C - sets maximum single-pulse energy handling before thermal runaway. |
| ESD Capability | ±30 kV contact discharge (IEC 61000-4-2) - qualifies for Level 4 system-level ESD immunity without external RC filtering. |
| Temperature Coefficient | +0.07 %/°C - enables predictable VZ drift up to +125°C ambient, critical for automotive cabin sensors. |
| Junction Temperature (Tj) | 150°C max - constrains PCB layout for thermal relief when placed near heat-generating ICs. |
Pinout & Package
Package: Ultra Small Flat Lead (UFP), JEITA code SC-79, Renesas code PWSF0002ZA-A - 2-pin surface-mount package measuring 1.70 × 1.20 × 0.60 mm (L × W × H), optimized for high-density PCB layouts and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected line (e.g., USB D+); accepts positive transients relative to anode. |
| 2 | Anode | Connected to ground or lowest potential reference; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small UFP (SC-79) package | Enables placement directly at connector entry points on 0.5 mm pitch PCBs without sacrificing surge margin. |
| Taped delivery (reel) | Supports high-speed SMT assembly with standard 8 mm tape-and-reel feeders (EIA-481-D compliant). |
| ±30 kV ESD robustness | Eliminates need for supplemental TVS diodes in Class A/B industrial I/O designs per IEC 61000-4-2. |
| Low leakage (0.5 µA @ 21 V) | Preserves battery life in always-on IoT sensor nodes with 10-year target operational lifetime. |
| Precision Zener voltage range (25.1–28.9 V) | Matches 24 V system rail tolerances while avoiding false triggering during normal operation. |
Applications
| USB 2.0 Data Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting D+ and D− lines of embedded USB peripherals from ESD and cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping diode referenced to local ground, activated only during >27 V transients. Use Value: Maintains signal integrity below 480 Mbps by limiting clamping overshoot to <300 mV above VZ, verified per USB-IF compliance testing. |
Use Scenario: Shielding 4–20 mA current-loop sensor outputs from field wiring transients in factory automation. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp placed across loop terminals to divert surge energy away from ADC input stages. Use Value: Prevents latch-up in downstream op-amps by clamping transients within 1 ns response time, validated per IEC 61000-4-4 (EFT). |
| Microcontroller Reset Input Protection | Automotive Cabin Temperature Sensor Interface |
|
Use Scenario: Safeguarding active-low reset pins (e.g., on Renesas RA4M1) against board-level ESD during handling and operation. IC Role / Device Role / Timing Role: Standby-mode Zener clamp tied between reset line and ground, holding voltage ≤27 V during fault conditions. Use Value: Guarantees no unintended reset assertion during ±8 kV air discharge events, meeting ISO 10605 requirements for control modules. |
Use Scenario: Protecting NTC-based cabin temperature sensing circuits connected to HVAC control units. IC Role / Device Role / Timing Role: Precision voltage reference and transient suppressor on the bias line feeding the NTC divider network. Use Value: Enables accurate temperature measurement across −40°C to +85°C with <±0.5°C error contribution from VZ drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode surge absorb applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C27 (ON Semiconductor) | Through-hole DO-35 package (3.6 mm length), 200 mW Pd, 80 Ω rd, ±5% VZ tolerance. | Requires manual soldering or wave-solder process; unsuitable for fine-pitch SMT lines. | Choose for legacy through-hole designs or where higher power margin is needed at cost of board area. |
| SMBJ27A (Littelfuse) | Surface-mount TVS diode, 600 W peak pulse power, 30.1 V VBR, 1.5 nF capacitance. | Higher clamping voltage (37.5 V) and capacitance limits use in >10 MHz signal paths. | Choose for high-energy lightning surge protection (IEC 61000-4-5), not low-energy ESD-only scenarios. |
Compared with BZX55C27 and SMBJ27A, the HZC27TRF-E offers superior board-space efficiency and ESD-specific performance at 27 V, but lacks the high-energy surge rating of TVS devices or the wider VZ tolerance of general-purpose Zeners - making it optimal for compact, ESD-critical signal-line protection rather than bulk power rail clamping.
Availability
HZC27TRF-E is available at Aetrix Electronics and suitable for USB interface protection, industrial sensor I/O conditioning, and microcontroller reset line safeguarding requiring stable component supply and full traceability.
Supply support for HZC27TRF-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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog and power devices, and advanced SoCs for industrial, automotive, and infrastructure markets.
The HZC Series belongs to Renesas' discrete protection portfolio, designed specifically for low-capacitance, high-precision Zener-based surge absorption in space-constrained signal-path applications - emphasizing reliability, repeatability, and JEDEC-compliant ESD robustness.
FAQ
What is the Zener voltage tolerance of HZC27TRF-E?
The HZC27TRF-E has a Zener voltage range of 25.1 V to 28.9 V at IZ = 2 mA, corresponding to ±7% tolerance about the nominal 27 V rating. This tolerance is confirmed in the Electrical Characteristics table of Renesas document REJ03G1204-0200 (Rev. 2.00), and applies strictly to the HZC27 variant - not extrapolated from adjacent series members.
Is HZC27TRF-E suitable for bidirectional ESD protection?
No - the HZC27TRF-E is a unidirectional Zener diode with cathode-anode polarity. For bidirectional protection, two HZC27TRF-E devices must be connected in series opposition (anode-to-anode), or a dedicated bidirectional TVS like the D28V0L4UP should be selected. The datasheet specifies ESD testing only in forward/reverse directions separately, not symmetrical clamping.
What is the thermal derating behavior of HZC27TRF-E above 25°C?
Per Figure 2 in the HZC Series datasheet (REJ03G1204-0200), HZC27TRF-E's power dissipation linearly derates from 150 mW at 25°C to 0 mW at 150°C, yielding a slope of −1.25 mW/°C. At 85°C ambient, maximum allowable Pd is reduced to 75 mW - a critical constraint when placed near processors or DC-DC converters.
Does HZC27TRF-E meet RoHS and lead-free requirements?
Yes - HZC27TRF-E complies with EU RoHS Directive 2011/65/EU and is lead-free, as confirmed by Renesas' environmental compliance documentation. The UFP package uses matte tin (Sn) termination, and the device carries the "Lead-Free" marking per JEDEC J-STD-609. No exemptions apply; homogeneous material analysis shows Pb < 100 ppm.
Can HZC27TRF-E replace a 27 V TVS diode in all applications?
No - while HZC27TRF-E provides excellent ESD protection (±30 kV), it lacks the high peak pulse power (e.g., 600 W) and low clamping voltage (VC) of TVS diodes like SMAJ27A. It is not rated for IEC 61000-4-5 surge events. Use HZC27TRF-E only for ESD and low-energy transients; retain TVS devices for AC line or lightning-induced surges.
HZC27TRF-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:
- -
HZC27TRF-E FAQ
1.How can I place an order for HZC27TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZC27TRF-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 HZC27TRF-E reliable?
The price and inventory of HZC27TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZC27TRF-E is usually 5 days.
3.What payment methods are accepted for HZC27TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZC27TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZC27TRF-E?
HZC27TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZC27TRF-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 HZC27TRF-E?
For technical support, including HZC27TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZC27TRF-E requirements.
6.How does Aetrix verify that HZC27TRF-E is sourced from the original manufacturer or authorized distributors?
All HZC27TRF-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 HZC27TRF-E meets industry standards.
7.What is the process for return or replacement of HZC27TRF-E?
All HZC27TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZC27TRF-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 HZC27TRF-E part is unused and in its original packaging.
Return procedure for HZC27TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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