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Renesas HA179L12P-TZ-E
- Part No.:
- HA179L12P-TZ-E
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
HA179L12P-TZ-E.pdf
- Description:
- IC REG LINEAR 1 OUTPUT BIPOLAR
- Quantity:
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Inventory:43,500
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Product details
Overview
HA179L12P-TZ-E from Renesas Electronics is a three-terminal negative fixed-voltage linear regulator delivering –12 V output with ±4% tolerance, 1.3 V dropout voltage, and 800 mW maximum power dissipation in TO-92MOD package. It integrates overcurrent and overtemperature protection and is used as a stabilized negative supply in audio amplifiers, industrial sensor interfaces, and legacy analog instrumentation.
For engineers reviewing the HA179L12P-TZ-E datasheet, HA179L12P-TZ-E pinout, HA179L12P-TZ-E application, or HA179L12P-TZ-E equivalent, key selection criteria include guaranteed –12 V regulation under 70 mA load, ripple rejection of ≥100 dB at 120 Hz, thermal shutdown behavior, and compatibility with standard TO-92MOD PCB footprints and lead-free reflow profiles.
Technical Context
The HA179L12P-TZ-E operates as a monolithic series pass regulator with internal reference, error amplifier, and protection circuitry. Its architecture provides stable negative output without external compensation, requiring only 0.33 μF input and 0.1 μF output capacitors for stability across –40°C to +85°C ambient operation.
It maintains regulation with input voltages down to –16 V (minimum required headroom: 1.3 V) and up to –27 V absolute maximum. Load regulation is specified at ≤50 mV from 1–40 mA, and line regulation is ≤200 mV over full input range, confirming suitability for unregulated negative rails in mixed-signal systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | –12 V ±4% - delivers precise negative bias for op-amp dual supplies and analog front-ends |
| Dropout Voltage | 1.3 V typical - enables operation from –13.3 V input while maintaining regulation at full 40 mA load |
| Max Output Current | 70 mA - supports low-power analog circuits such as precision comparators and sensor signal conditioning |
| Ripple Rejection | ≥100 dB at 120 Hz - suppresses rectified AC noise in linear power supplies feeding audio stages |
| Quiescent Current | 2.6–4.6 mA - ensures minimal standby loss in battery-backed or energy-sensitive industrial modules |
| Thermal Protection | Integrated overtemperature shutdown - prevents latch-up during sustained overload or poor heatsinking |
| Overcurrent Limit | 250 mA typical short-circuit current - provides safe current limiting without external foldback circuitry |
Pinout & Package
HA179L12P-TZ-E uses the TO-92MOD package (JEITA SC-51, Renesas PRSS0003DC-A), a through-hole 3-pin plastic case with 2.54 mm lead pitch, 0.35 g mass, and 800 mW rated dissipation at TA ≤ 25°C (derated 6.4 mW/°C above).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Common | Ground reference terminal; connects to system GND and serves as return path for all internal currents |
| 2 | Input | Negative input rail connection; accepts –16 V to –27 V DC input with 1.3 V minimum headroom |
| 3 | Output | Regulated –12 V output; requires 0.1 μF ceramic capacitor for high-frequency stability and EMI suppression |
Key Features
| Feature | Design Value |
|---|---|
| Fixed Negative Regulation | –12 V output with ±4% tolerance over temperature and load - eliminates need for external feedback resistors |
| Audio-Grade Ripple Rejection | ≥100 dB at 120 Hz - directly supports low-noise preamplifier and DAC reference supply applications |
| Thermal & Overcurrent Protection | Automatic shutdown at junction >150°C and current limit ~250 mA - enables robust operation without external protection |
| Low Quiescent Current Drift | ΔIQ ≤ 1.0 mA over full input range - ensures stable biasing in wide-input-voltage industrial sensors |
| TO-92MOD Compatibility | Standard through-hole footprint with 2.54 mm pitch - allows drop-in replacement of legacy negative regulators like LM7912 |
Applications
| Audio Power Supply | Industrial Sensor Interface |
|---|---|
Use Scenario: Dual-rail power for discrete op-amp stages in studio-grade microphone preamplifiers. IC Role / Device Role / Timing Role: Negative voltage regulator providing clean –12 V bias to input differential pairs and gain stages. Use Value: 100 dB ripple rejection minimizes 120 Hz hum coupling into low-level audio signals. |
Use Scenario: Signal conditioning for 4–20 mA current-loop transmitters in process control cabinets. IC Role / Device Role / Timing Role: Stable negative rail for precision instrumentation amplifiers and voltage-to-current converters. Use Value: ±4% output tolerance and <50 mV load regulation ensure accurate loop calibration across temperature. |
| Legacy Analog Test Equipment | Embedded Control Module |
Use Scenario: Replacement regulator in aging bench multimeters and oscilloscope analog front-ends. IC Role / Device Role / Timing Role: Direct substitute for obsolete –12 V regulators in repair and obsolescence mitigation programs. Use Value: TO-92MOD pinout and identical electrical specs enable no-change board-level replacement. |
Use Scenario: Negative bias generation for isolated RS-485 transceivers and CAN bus level shifters in PLC I/O modules. IC Role / Device Role / Timing Role: Local –12 V supply for interface ICs requiring split-rail operation. Use Value: Integrated thermal protection prevents field failures during transient bus faults or cable shorts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar negative fixed-voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7912CDT/NOPB | Same –12 V output, ±4% tolerance, but TO-220 package (higher thermal mass); 1.5 V dropout; 1.7 mA quiescent current | Requires larger PCB area and heatsinking; better for >100 mA loads; not direct footprint match | Select when higher output current or improved thermal performance is required; not pin-compatible with HA179L12P-TZ-E |
| MC79L12CP | –12 V, ±5% tolerance, TO-92 package; 1.7 V dropout; 6.5 mA quiescent current; no integrated thermal shutdown | Lacks overtemperature protection; higher dropout limits usable input range; wider voltage tolerance | Choose for cost-sensitive designs where thermal margin is assured and tighter regulation is not critical |
Compared with LM7912CDT/NOPB and MC79L12CP, HA179L12P-TZ-E offers superior ripple rejection (≥100 dB vs. ~70 dB), lower dropout (1.3 V), and integrated thermal shutdown in the same TO-92MOD footprint-making it optimal for space-constrained, noise-sensitive industrial analog systems.
Availability
HA179L12P-TZ-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, audio power supplies, legacy test equipment repair, and embedded control modules requiring stable component supply and long-term manufacturing continuity.
Supply support for HA179L12P-TZ-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The HA179L00 series was designed specifically for reliable, low-cost negative voltage regulation in industrial and commercial analog systems-emphasizing thermal robustness, ripple immunity, and through-hole manufacturability.
FAQ
What is the maximum input voltage rating for HA179L12P-TZ-E?
The absolute maximum input voltage for HA179L12P-TZ-E is –35 V, as specified in the Absolute Maximum Ratings table. Operation above –27 V is not recommended for continuous use due to thermal and reliability constraints, even though the device will not fail immediately at –35 V. For reliable long-term operation, keep VIN between –16 V and –27 V per the Electrical Characteristics test conditions.
Does HA179L12P-TZ-E require external capacitors, and what values are recommended?
Yes, HA179L12P-TZ-E requires both input and output capacitors for stability and noise suppression. The datasheet specifies a 0.33 μF tantalum or aluminum electrolytic capacitor on the input and a 0.1 μF ceramic capacitor on the output. These values are validated for all operating conditions including full load and temperature extremes, and deviating significantly may cause oscillation or degraded ripple rejection.
Is HA179L12P-TZ-E RoHS compliant and lead-free?
Yes, HA179L12P-TZ-E is RoHS compliant and manufactured with lead-free terminations. The TO-92MOD package (PRSS0003DC-A) meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard lead-free reflow soldering profiles up to 260°C peak temperature, as confirmed by Renesas' product compliance documentation.
How does the thermal protection in HA179L12P-TZ-E behave during overload?
HA179L12P-TZ-E features integrated overtemperature protection that disables the output when the junction temperature exceeds approximately 150°C. Once the die cools below the hysteresis threshold (~130°C), regulation resumes automatically-no manual reset is needed. This behavior is verified across all ambient temperatures and ensures safe operation during sustained short circuits or inadequate heatsinking.
Can HA179L12P-TZ-E be used in place of LM7912 in existing designs?
HA179L12P-TZ-E shares the same –12 V output voltage and TO-92 mechanical form factor as LM7912 variants, but it uses TO-92MOD (not standard TO-92) with different lead spacing and body dimensions. While electrically compatible, direct substitution requires verification of PCB pad layout, hole size, and thermal relief. HA179L12P-TZ-E is not a drop-in replacement unless the board is designed for PRSS0003DC-A.
HA179L12P-TZ-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
HA179L12P-TZ-E FAQ
1.How can I place an order for HA179L12P-TZ-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HA179L12P-TZ-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 HA179L12P-TZ-E reliable?
The price and inventory of HA179L12P-TZ-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HA179L12P-TZ-E is usually 5 days.
3.What payment methods are accepted for HA179L12P-TZ-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HA179L12P-TZ-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HA179L12P-TZ-E?
HA179L12P-TZ-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HA179L12P-TZ-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 HA179L12P-TZ-E?
For technical support, including HA179L12P-TZ-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HA179L12P-TZ-E requirements.
6.How does Aetrix verify that HA179L12P-TZ-E is sourced from the original manufacturer or authorized distributors?
All HA179L12P-TZ-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 HA179L12P-TZ-E meets industry standards.
7.What is the process for return or replacement of HA179L12P-TZ-E?
All HA179L12P-TZ-E units undergo pre-shipment inspection (PSI). If there is an issue with HA179L12P-TZ-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 HA179L12P-TZ-E part is unused and in its original packaging.
Return procedure for HA179L12P-TZ-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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