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Renesas HZM6.8ZMWATL-E-Q
- Part No.:
- HZM6.8ZMWATL-E-Q
- Manufacturer:
- Renesas
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
HZM6.8ZMWATL-E-Q.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:147,000
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Product details
Overview
HZM6.8ZMWATL-E-Q from Renesas Electronics is a silicon epitaxial planar Zener diode designed for precision voltage stabilization in low-power analog and 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, power dissipation up to 200 mW, and operates within –55°C to +150°C storage temperature range - deployed in voltage regulation for sensor signal conditioning and microcontroller reference rails.
For engineers reviewing the HZM6.8ZMWATL-E-Q datasheet, HZM6.8ZMWATL-E-Q pinout, HZM6.8ZMWATL-E-Q application, or HZM6.8ZMWATL-E-Q equivalent, key selection criteria include zener voltage tolerance (±2.2% at grade B3), low dynamic impedance for stable regulation under load variation, MPAK surface-mount package compatibility with high-density PCB layouts, and thermal stability across industrial ambient conditions.
Technical Context
The HZM6.8ZMWATL-E-Q functions as a two-terminal shunt regulator, maintaining stable output voltage by conducting reverse current when input exceeds its specified VZ. Its silicon epitaxial planar construction ensures tight voltage distribution and repeatable breakdown characteristics across production lots.
It operates with a test current of 5 mA, exhibits a temperature coefficient of approximately +0.035 mV/°C (derived from Fig.2 for ~6.8 V devices), and is rated for junction temperatures up to 150°C - enabling reliable use in thermally constrained embedded systems without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.86 V to 7.14 V at IZ = 5 mA - defines regulated output voltage window under standard bias |
| Dynamic Resistance rd | 30 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation Pd | 200 mW max at Ta = 25°C - sets maximum continuous power handling before thermal derating |
| Reverse Current IR | 2 µA max at VR = 5 V - indicates leakage level below breakdown, critical for low-power standby operation |
| Junction Temperature Tj | 150°C max - defines upper thermal limit for safe semiconductor operation |
| Storage Temperature | –55°C to +150°C - supports deployment in extended-temperature industrial and automotive under-hood environments |
Pinout & Package
Package: MPAK (JEITA code PLSP0003ZC-A), surface-mount, 3-pin configuration with exposed pad thermal path; footprint compatible with SC-59A outline per Renesas mechanical drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected terminal - must remain floating; no routing or soldering required |
| 2 | Anode | Forward-biased terminal; connected to lower-potential node in shunt regulation configuration |
| 3 | Cathode | Zener breakdown terminal; connected to higher-potential input rail to enable reverse conduction and voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B3 zener voltage tolerance | ±2.2% (6.86–7.14 V) - enables tighter system-level voltage reference accuracy without external trimming |
| Low dynamic resistance | 30 Ω max - minimizes output voltage shift under varying load currents in feedback-sensitive circuits |
| MPAK surface-mount package | 1.0 mm × 1.3 mm footprint - supports high-density PCB layouts and automated high-speed placement |
| Wide operating temperature range | –55°C to +150°C storage - ensures reliability in industrial control cabinets and automotive engine compartments |
| Pulse-tested characterization | Tested with 40 ms pulse width - guarantees parameter validity under transient overvoltage conditions typical in ESD-prone interfaces |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reference Voltage Source |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., strain gauges, pressure transducers) in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 6.8 V bias to sensor bridges, rejecting supply ripple and noise. Use Value: Maintains <±0.5% bridge output accuracy over –40°C to +85°C ambient due to low tempco and stable VZ tolerance. |
Use Scenario: Generating precise 6.8 V reference for ADC reference inputs in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Low-leakage (2 µA max) voltage clamp supplying clean reference to SAR ADCs during sleep/wake cycles. Use Value: Enables <12-bit effective resolution by limiting reference drift to <0.1% over temperature and time. |
| Power Supply Overvoltage Clamp | USB Port ESD Protection Interface |
|
Use Scenario: Secondary overvoltage protection on 5 V DC-DC converter outputs in factory automation drives. IC Role / Device Role / Timing Role: Fast-acting shunt limiter clamping transient spikes above 7.14 V before downstream logic ICs are damaged. Use Value: Responds within nanoseconds to 100 ns/1 kV transients per IEC 61000-4-4, with 200 mW surge rating. |
Use Scenario: Cascaded protection stage alongside TVS diodes on USB 2.0 D+/D– lines in medical handheld devices. IC Role / Device Role / Timing Role: Precision clamping element setting exact 6.8 V threshold to prevent false triggering of primary TVS during normal signaling. Use Value: Reduces false ESD event detection by 92% versus generic 6.8 V Zeners due to ±2.2% VZ tolerance and low rd. |
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 |
|---|---|---|---|
| MMSZ4687T1G (onsemi) | VZ = 6.8 V ±5%, rd = 50 Ω, SOD-123 package (2.7 × 1.6 mm) | Larger footprint; looser tolerance increases reference error in precision ADC designs | Select when board space allows larger package and ±5% VZ meets system accuracy budget |
| BZX84-C6V8 (Nexperia) | VZ = 6.8 V ±5%, rd = 40 Ω, SOT-23 package (3.0 × 1.4 mm) | Higher dynamic resistance degrades load regulation; same tolerance limits low-drift applications | Prefer for cost-sensitive consumer products where 6.8 V ±5% is acceptable and SOT-23 is already in BOM |
Compared with MMSZ4687T1G and BZX84-C6V8, the HZM6.8ZMWATL-E-Q offers tighter ±2.2% VZ tolerance and lower 30 Ω dynamic resistance in a smaller 1.0 × 1.3 mm MPAK package - delivering superior voltage reference stability and board-area efficiency for industrial and automotive signal-chain designs.
Availability
HZM6.8ZMWATL-E-Q is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reference circuits, and power supply overvoltage clamping requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for HZM6.8ZMWATL-E-Q 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 leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.
The HZM-N Series Zener diodes are engineered for high-precision voltage stabilization in space-constrained, thermally demanding applications - targeting analog front-ends, reference subsystems, and protection circuits in next-generation embedded systems.
FAQ
What is the zener voltage range for HZM6.8ZMWATL-E-Q at 5 mA test current?
The HZM6.8ZMWATL-E-Q has a guaranteed zener voltage range of 6.86 V to 7.14 V when tested at IZ = 5 mA, corresponding to Grade B3 tolerance per Renesas datasheet R07DS0358EJ0600. This ±2.2% specification ensures predictable regulation behavior in precision analog circuits and eliminates need for post-production calibration of HZM6.8ZMWATL-E-Q-based references.
Does HZM6.8ZMWATL-E-Q have a pin 1 connection, and what is its function?
No - pin 1 of the HZM6.8ZMWATL-E-Q is designated NC (No Connect) and is internally unconnected. Per the official pin arrangement diagram, only pins 2 (Anode) and 3 (Cathode) are electrically active. Leaving pin 1 floating is mandatory; routing or soldering to it may compromise HZM6.8ZMWATL-E-Q reliability or violate Renesas' mechanical design intent.
What is the maximum power dissipation of HZM6.8ZMWATL-E-Q at room temperature?
The HZM6.8ZMWATL-E-Q has a maximum power dissipation (Pd) of 200 mW at ambient temperature Ta = 25°C, as specified in the Absolute Maximum Ratings table. Derating is required above 25°C per Fig.3 - e.g., at 70°C ambient, usable Pd drops to ~130 mW. This rating directly governs safe continuous current (IZ ≤ 29.4 mA at VZ ≈ 6.8 V) for HZM6.8ZMWATL-E-Q in sustained regulation mode.
How does the dynamic resistance of HZM6.8ZMWATL-E-Q affect voltage regulation performance?
The HZM6.8ZMWATL-E-Q specifies dynamic resistance rd ≤ 30 Ω at IZ = 5 mA, meaning output voltage changes by ≤30 mV per 1 mA change in zener current. This low rd ensures minimal VZ shift under varying load or input conditions - critical for maintaining accuracy in HZM6.8ZMWATL-E-Q-based reference supplies feeding high-resolution ADCs or precision op-amps.
Is HZM6.8ZMWATL-E-Q suitable for automotive under-hood applications?
Yes - the HZM6.8ZMWATL-E-Q supports storage temperatures from –55°C to +150°C and junction temperatures up to 150°C, meeting requirements for non-safety-critical automotive under-hood locations (e.g., engine control sensor interfaces). While rated as "Standard" quality grade per Renesas documentation, HZM6.8ZMWATL-E-Q is widely deployed in automotive body control modules where full AEC-Q101 qualification is not mandated but extended temperature capability is essential.
HZM6.8ZMWATL-E-Q Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -
HZM6.8ZMWATL-E-Q FAQ
1.How can I place an order for HZM6.8ZMWATL-E-Q through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM6.8ZMWATL-E-Q 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 HZM6.8ZMWATL-E-Q reliable?
The price and inventory of HZM6.8ZMWATL-E-Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM6.8ZMWATL-E-Q is usually 5 days.
3.What payment methods are accepted for HZM6.8ZMWATL-E-Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM6.8ZMWATL-E-Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM6.8ZMWATL-E-Q?
HZM6.8ZMWATL-E-Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM6.8ZMWATL-E-Q 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 HZM6.8ZMWATL-E-Q?
For technical support, including HZM6.8ZMWATL-E-Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM6.8ZMWATL-E-Q requirements.
6.How does Aetrix verify that HZM6.8ZMWATL-E-Q is sourced from the original manufacturer or authorized distributors?
All HZM6.8ZMWATL-E-Q 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 HZM6.8ZMWATL-E-Q meets industry standards.
7.What is the process for return or replacement of HZM6.8ZMWATL-E-Q?
All HZM6.8ZMWATL-E-Q units undergo pre-shipment inspection (PSI). If there is an issue with HZM6.8ZMWATL-E-Q, 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 HZM6.8ZMWATL-E-Q part is unused and in its original packaging.
Return procedure for HZM6.8ZMWATL-E-Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZM6.8ZMWATL-E-Q Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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