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Renesas HZM6.8MWATL-E
- Part No.:
- HZM6.8MWATL-E
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
HZM6.8MWATL-E.pdf
- Description:
- HZM6.8M - TRANS VOLTAGE SUPPRESS
- Quantity:
- Payment:
- Shipping:
Inventory:39,410
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Product details
Overview
HZM6.8MWATL-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for precision voltage stabilization in low-power analog and power-supply reference circuits. It delivers a nominal zener voltage of 6.86 V to 7.14 V at 5 mA, with dynamic resistance of 30 Ω, maximum power dissipation of 200 mW, and operates within a junction temperature range of –55°C to +150°C. It is commonly used in voltage regulation for microcontroller reset circuits and sensor biasing.
For engineers reviewing the HZM6.8MWATL-E datasheet, HZM6.8MWATL-E pinout, HZM6.8MWATL-E application, or HZM6.8MWATL-E equivalent, key selection criteria include zener voltage tolerance (±2.5% at grade B3), low dynamic impedance, MPAK surface-mount package compatibility, and thermal stability across industrial ambient temperatures.
Technical Context
The HZM6.8MWATL-E employs a silicon epitaxial planar structure optimized for stable reverse-breakdown behavior under DC and pulsed conditions (Pw = 40 ms). Its zener voltage exhibits a positive temperature coefficient of approximately +0.035 mV/°C near 6.8 V, minimizing drift in mid-range voltage references.
Designed for high-density PCB assembly, it uses a three-terminal MPAK (JEITA code PLSP0003ZC-A) package with terminal configuration NC–Anode–Cathode. The NC pin provides mechanical symmetry and layout flexibility without electrical function, while the anode-cathode polarity supports standard reverse-bias stabilization topology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.86 V to 7.14 V at IZ = 5 mA - defines stable regulation point with ±2.5% tolerance (Grade B3) |
| Dynamic Resistance (rd) | 30 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load current changes |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous DC power handling on standard FR-4 PCB |
| Reverse Current (IR) | 2 µA max at VR = 5 V - guarantees low leakage in standby or high-impedance bias networks |
| Junction Temperature (Tj) | –55°C to +150°C - enables operation in extended industrial environments without derating below –40°C |
| Package | MPAK (PLSP0003ZC-A) - 3-pin surface-mount package with 0.65 mm lead pitch, footprint-compatible with SC-59A |
Pinout & Package
MPAK package (JEITA code PLSP0003ZC-A) is a compact 3-terminal surface-mount device measuring 2.7 × 1.35 × 0.95 mm (L × W × H), optimized for automated placement and reflow soldering on high-density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Mechanical dummy terminal; no internal connection - allows symmetrical PCB layout and thermal balance |
| 2 | Anode | Connected to P-type region; referenced as ground or low-side node in reverse-bias configuration |
| 3 | Cathode | Connected to N-type region; tied to regulated output node or voltage reference rail |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B3 zener voltage tolerance | ±2.5% at 6.8 V - tighter than standard Grade B (±5%), improving accuracy in precision references |
| Low dynamic impedance | 30 Ω max - reduces output ripple and improves line/load regulation in feedback-sensing applications |
| High-temperature operation | 150°C max junction temperature - supports use in enclosed or thermally constrained industrial modules |
| MPAK surface-mount packaging | 0.65 mm lead pitch, 1.0 mm height - enables 0.5 mm trace clearance and compatibility with fine-pitch reflow profiles |
Applications
| Microcontroller Reset Circuit | Sensor Bias Reference |
|---|---|
Use Scenario: Provides clean, temperature-stable reset threshold for 3.3 V or 5 V microcontrollers during power-up and brown-out events. IC Role / Device Role / Timing Role: Zener diode functions as precision voltage threshold element in RC-based reset generator or comparator input network. Use Value: Grade B3 tolerance ensures reset assertion occurs within ±2.5% of 6.8 V, preventing premature or delayed resets under varying ambient conditions. |
Use Scenario: Supplies stable bias voltage to analog sensors (e.g., pressure transducers, RTD interfaces) requiring low-drift excitation. IC Role / Device Role / Timing Role: Acts as passive voltage reference source in constant-current or ratiometric sensor front-end topologies. Use Value: 30 Ω dynamic resistance minimizes sensor output error caused by supply current variations up to ±1 mA. |
| Low-Power LDO Pre-Regulator | Industrial Signal Conditioning |
Use Scenario: Stabilizes input to ultra-low-quiescent LDOs in battery-powered IoT nodes where input voltage varies between 7–12 V. IC Role / Device Role / Timing Role: Functions as shunt regulator to clamp and smooth unregulated rail prior to LDO input stage. Use Value: 200 mW power rating supports continuous dissipation at 1 mA × 6.8 V, enabling reliable pre-regulation without heatsinking. |
Use Scenario: Sets reference level for op-amp-based signal scaling, offset adjustment, or overvoltage protection in PLC analog I/O modules. IC Role / Device Role / Timing Role: Serves as fixed-voltage clamp or calibration reference in programmable gain amplifier (PGA) feedback paths. Use Value: –55°C to +150°C operating range ensures consistent performance across industrial temperature cycles without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage stabilization applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V8LT1G | Same nominal VZ (6.8 V), SOT-23 package, 350 mW Pd, ±5% tolerance (standard grade) | Higher power rating but looser tolerance; requires larger PCB footprint and different thermal relief design | Select when higher surge capability is needed and ±5% VZ tolerance is acceptable |
| MMSZ4687T1G | VZ = 6.8 V, SOD-123 package, 500 mW Pd, ±5% tolerance, 40 Ω rd | Higher power and lower cost, but larger size and higher dynamic resistance reduce regulation precision | Prefer for cost-sensitive consumer applications where tight regulation is secondary to board space and BOM cost |
Compared with BZX84-C6V8LT1G and MMSZ4687T1G, the HZM6.8MWATL-E offers superior voltage accuracy (±2.5% vs. ±5%) and lower dynamic impedance (30 Ω vs. ≥40 Ω) in a smaller MPAK footprint, making it optimal for space-constrained industrial references demanding long-term stability.
Availability
HZM6.8MWATL-E is available at Aetrix Electronics and suitable for microcontroller reset circuits, sensor bias references, low-power LDO pre-regulators, and industrial signal conditioning requiring stable component supply and consistent parametric performance across production lots.
Supply support for HZM6.8MWATL-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 is a global semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The HZM-N Series belongs to Renesas' precision discrete portfolio, engineered specifically for stable voltage reference and regulation in space-constrained, thermally demanding applications - emphasizing tight zener tolerance, low dynamic impedance, and robust surface-mount packaging.
FAQ
What is the zener voltage tolerance for HZM6.8MWATL-E?
The HZM6.8MWATL-E has a zener voltage range of 6.86 V to 7.14 V at 5 mA test current, corresponding to ±2.5% tolerance (Grade B3). This tighter specification than standard Grade B (±5%) makes HZM6.8MWATL-E suitable for applications requiring higher reference accuracy without active trimming.
Does HZM6.8MWATL-E have a functional pin 1?
No - pin 1 of the HZM6.8MWATL-E is a No Connect (NC) terminal with no internal electrical connection. It serves only mechanical and layout purposes, such as enhancing thermal symmetry and enabling balanced PCB pad design. The active terminals are pin 2 (Anode) and pin 3 (Cathode).
What is the maximum power dissipation of HZM6.8MWATL-E at 70°C ambient?
Per Figure 3 in the R07DS0358EJ0600 datasheet, the HZM6.8MWATL-E maintains 200 mW power dissipation up to approximately 50°C ambient; at 70°C, derated power drops to ~140 mW. This reflects linear thermal derating based on its 200 mW rating at 25°C and thermal resistance characteristics of the MPAK package on standard FR-4 PCB.
Is HZM6.8MWATL-E RoHS compliant and halogen-free?
Yes - HZM6.8MWATL-E complies with EU RoHS Directive 2011/65/EU and is halogen-free per Renesas' environmental specifications. The device carries the "E" suffix per ordering nomenclature, indicating compliance with lead-free and green material requirements for surface-mount assembly.
How does the temperature coefficient of HZM6.8MWATL-E affect long-term stability?
The HZM6.8MWATL-E exhibits a zener voltage temperature coefficient of approximately +0.035 mV/°C near 6.8 V (per Figure 2), translating to ~±0.24% drift over a –40°C to +85°C ambient range. This low, predictable drift supports stable operation in industrial environments without requiring external compensation circuitry.
HZM6.8MWATL-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
HZM6.8MWATL-E FAQ
1.How can I place an order for HZM6.8MWATL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM6.8MWATL-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 HZM6.8MWATL-E reliable?
The price and inventory of HZM6.8MWATL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM6.8MWATL-E is usually 5 days.
3.What payment methods are accepted for HZM6.8MWATL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM6.8MWATL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM6.8MWATL-E?
HZM6.8MWATL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM6.8MWATL-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 HZM6.8MWATL-E?
For technical support, including HZM6.8MWATL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM6.8MWATL-E requirements.
6.How does Aetrix verify that HZM6.8MWATL-E is sourced from the original manufacturer or authorized distributors?
All HZM6.8MWATL-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 HZM6.8MWATL-E meets industry standards.
7.What is the process for return or replacement of HZM6.8MWATL-E?
All HZM6.8MWATL-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM6.8MWATL-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 HZM6.8MWATL-E part is unused and in its original packaging.
Return procedure for HZM6.8MWATL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZM6.8MWATL-E Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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