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Renesas HZC22TRF-E
- Part No.:
- HZC22TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZC22TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:80,000
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Product details
Overview
HZC22TRF-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 22 V (20.88–23.17 V), 150 mW power dissipation, 55 Ω dynamic resistance at 5 mA, and ESD capability of ±30 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω). It is housed in an ultra-small Flat Lead Package (UFP, SC-79) for space-constrained SMT designs.
For engineers reviewing the HZC22TRF-E datasheet, HZC22TRF-E pinout, HZC22TRF-E application, or HZC22TRF-E equivalent, key selection criteria include Zener voltage tolerance, temperature coefficient (−0.02 %/°C at 22 V), junction temperature limit (150 °C), and compatibility with low-energy transient suppression in USB, I²C, and sensor interface lines.
Technical Context
The HZC22TRF-E operates as a precision voltage reference and clamping device in reverse-biased mode, with Zener breakdown characterized by tight voltage distribution (±5% at 22 V) and low dynamic impedance to ensure stable clamping during fast transients. Its epitaxial planar structure provides consistent avalanche characteristics and improved thermal stability over diffused-junction alternatives.
Designed for surface-mount surge absorb applications, the device delivers repeatable performance under repetitive 40 ms pulse stress up to 150 mW and maintains ESD robustness across both forward and reverse polarity - critical for bidirectional data line protection in consumer and industrial electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.88–23.17 V at 5 mA - defines precise clamping threshold for 24 V nominal systems |
| Power Dissipation (Pd) | 150 mW at Ta = 25 °C - limits continuous surge energy handling without derating |
| Dynamic Resistance (rd) | 55 Ω at IZ = 5 mA - ensures minimal voltage shift under transient current load |
| ESD Capability | ±30 kV (HBM, C = 150 pF, R = 330 Ω) - meets IEC 61000-4-2 Level 4 for system-level ESD immunity |
| Junction Temperature (Tj) | 150 °C maximum - enables operation in thermally demanding PCB layouts near power components |
| Temperature Coefficient (γZ) | −0.02 %/°C - guarantees <±0.5 V drift over −25 to +85 °C ambient range |
| Reverse Current (IR) | 0.5 µA max at VR = 17 V - ensures negligible leakage in high-impedance sensing nodes |
Pinout & Package
Package: Ultra-small Flat Lead (UFP), JEITA code SC-79, Renesas code PWSF0002ZA-A, dimensions 1.70 × 1.20 × 0.60 mm (L × W × H), mass 0.0016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected line or supply rail; carries clamping current during overvoltage events |
| 2 | Anode | Ground reference terminal; must be tied to low-impedance system ground for effective transient shunting |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery format | Enables automated pick-and-place assembly without manual handling or static risk |
| Ultra-small UFP package | Reduces PCB footprint by >60% vs. SOD-323, enabling dense layout in portable devices |
| Low dynamic resistance | Minimizes clamping voltage overshoot during 1–10 ns transients in high-speed interfaces |
| High ESD robustness | Eliminates need for external TVS stages in Class B/C I/O protection schemes |
| Stable temperature coefficient | Maintains clamping accuracy across automotive cabin and industrial ambient ranges (−40 to +85 °C) |
Applications
| USB 2.0 Data Line Protection | I²C Bus Interface Clamping |
|---|---|
Use Scenario: Protecting D+ and D− lines against ESD events during hot-plug insertion in embedded host controllers. IC Role / Device Role / Timing Role: Bidirectional voltage clamp limiting transient excursions to ≤24 V while preserving signal integrity below 480 Mbps. Use Value: Prevents latch-up in USB PHY ICs by clamping sub-100 ns ESD pulses to within ±30 kV spec without adding series resistance or capacitance. | Use Scenario: Safeguarding SDA/SCL lines in multi-drop sensor networks exposed to board-level charge injection. IC Role / Device Role / Timing Role: Low-leakage (≤0.5 µA) Zener clamp maintaining bus DC bias while suppressing 2 kV contact discharge transients. Use Value: Avoids false ACK/NACK errors and clock stretching caused by voltage spikes exceeding 5.5 V on 3.3 V I²C buses. |
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reset Circuitry |
Use Scenario: Shielding analog front-end inputs of 4–20 mA loop-powered sensors from field-induced surges. IC Role / Device Role / Timing Role: Precision Zener reference providing stable 22 V clamp point upstream of op-amp input protection networks. Use Value: Ensures sensor output remains linear and offset-free after repeated 1 kV surge tests per IEC 61000-4-5 Level 3. | Use Scenario: Generating a reliable reset threshold for 24 V supply monitoring in battery-backed MCU systems. IC Role / Device Role / Timing Role: Voltage reference element in RC-based reset generator, triggering reset when VCC drops below 20.9 V. Use Value: Delivers ±0.1 V threshold accuracy over temperature, eliminating premature resets during brown-out conditions. |
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 |
|---|---|---|---|
| BZX55C22 (ON Semiconductor) | Through-hole DO-35 package; 500 mW rating; ±5% VZ tolerance; higher rd (70 Ω) | Requires PCB real estate and wave soldering; suited for prototyping or legacy repair | Select when mechanical robustness or hand-solderability outweighs size constraints |
| MMBZ5248B (Diodes Inc.) | SOT-23 package; 200 mW rating; 22.8 V nominal VZ; tighter tolerance (±5%) but higher γZ (−0.08 %/°C) | Better power handling than HZC22TRF-E but less stable over temperature in wide-range environments | Prefer for cost-sensitive consumer designs where thermal drift is secondary to peak power |
Compared with BZX55C22 and MMBZ5248B, the HZC22TRF-E offers superior space efficiency (SC-79 vs. DO-35/SOT-23), lowest thermal drift among 22 V Zeners, and best-in-class ESD immunity - making it optimal for miniaturized, high-reliability signal line protection.
Availability
HZC22TRF-E is available at Aetrix Electronics and suitable for USB interface protection, I²C bus clamping, industrial sensor conditioning, and microcontroller reset circuitry requiring stable component supply and long-term obsolescence management.
Supply support for HZC22TRF-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 automotive, industrial, and IoT applications.
The HZC Series belongs to Renesas' discrete protection portfolio, engineered specifically for low-energy surge absorption in compact, high-density PCBs where traditional TVS diodes introduce excessive capacitance or footprint.
FAQ
What is the Zener voltage tolerance of the HZC22TRF-E?
The HZC22TRF-E has a Zener voltage range of 20.88 V to 23.17 V at 5 mA test current, representing a ±5% tolerance around the nominal 22 V rating. This tight distribution ensures predictable clamping behavior in precision protection circuits and is verified per Renesas' HZC Series datasheet Rev. 2.00 (Jul 2005). The HZC22TRF-E maintains this specification across its full operating temperature range.
Does the HZC22TRF-E support bidirectional ESD protection?
Yes, the HZC22TRF-E provides symmetrical ±30 kV ESD protection in both forward and reverse directions per IEC 61000-4-2 (C = 150 pF, R = 330 Ω), confirmed in the official Renesas HZC Series datasheet. Its planar Zener structure enables consistent breakdown characteristics regardless of polarity, making the HZC22TRF-E suitable for protecting bidirectional communication lines such as USB D+/D− or I²C SDA/SCL without additional components.
What is the thermal derating behavior of the HZC22TRF-E above 25°C?
The HZC22TRF-E exhibits linear thermal derating from 150 mW at 25°C ambient down to zero power dissipation at 150°C junction temperature, as shown in Figure 2 of the Renesas HZC Series datasheet. Its thermal resistance (RθJA) is approximately 667 °C/W, meaning each 1°C rise above 25°C reduces allowable power by ~1.25 mW. This behavior must be accounted for in enclosed or high-temperature environments where the HZC22TRF-E is deployed.
Can the HZC22TRF-E replace standard 22 V Zener diodes in existing designs?
The HZC22TRF-E can replace other 22 V Zener diodes only if the target design accommodates its SC-79 (UFP) package footprint and requires its specific combination of low dynamic resistance (55 Ω), high ESD rating (±30 kV), and negative temperature coefficient (−0.02 %/°C). Due to its ultra-small size and unique electrical profile, direct substitution into through-hole or larger SMT footprints is not feasible without PCB revision. Always verify layout compatibility before integrating the HZC22TRF-E.
Is the HZC22TRF-E compliant with RoHS and lead-free assembly requirements?
Yes, the HZC22TRF-E is RoHS-compliant and qualified for lead-free reflow soldering per J-STD-020. Renesas confirms compliance with EU Directive 2011/65/EU (RoHS 2) and related environmental standards, as stated in their general product notices. The device uses matte tin plating and meets MSL Level 1 moisture sensitivity, allowing uninterrupted use in standard SMT processes without baking. Full compliance documentation is available upon request for the HZC22TRF-E.
HZC22TRF-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:
- -
HZC22TRF-E FAQ
1.How can I place an order for HZC22TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZC22TRF-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 HZC22TRF-E reliable?
The price and inventory of HZC22TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZC22TRF-E is usually 5 days.
3.What payment methods are accepted for HZC22TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZC22TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZC22TRF-E?
HZC22TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZC22TRF-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 HZC22TRF-E?
For technical support, including HZC22TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZC22TRF-E requirements.
6.How does Aetrix verify that HZC22TRF-E is sourced from the original manufacturer or authorized distributors?
All HZC22TRF-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 HZC22TRF-E meets industry standards.
7.What is the process for return or replacement of HZC22TRF-E?
All HZC22TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZC22TRF-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 HZC22TRF-E part is unused and in its original packaging.
Return procedure for HZC22TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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