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Diodes Incorporated ZSR1000CL
- Part No.:
- ZSR1000CL
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
ZSR1000CL.pdf
- Description:
- IC REG LINEAR 10V 200MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,005
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Product details
Overview
ZSR1000CL from Zetex Semiconductors is a fixed positive 10.0 V linear voltage regulator in SOT223 package, designed for local regulation in space-constrained PCBs. It delivers up to 200 mA output current with ±2.5% initial output voltage tolerance (9.75–10.25 V), 350–600 µA quiescent current, and operates across –55°C to +125°C. Used in industrial control modules where stable local supply and thermal robustness are critical.
For engineers reviewing the ZSR1000CL datasheet, ZSR1000CL pinout, ZSR1000CL application, or ZSR1000CL equivalent, this page provides verified electrical parameters, thermal derating guidance, ripple rejection (43–57 dB at 120 Hz), dropout behavior (11.7 V min input), and real-world design implications for high-temperature embedded systems.
Technical Context
The ZSR1000CL integrates internal short-circuit current limiting and thermal shutdown circuitry, enabling self-protection without external components. Its architecture eliminates need for output capacitance stabilization-fully stable with zero external parts.
It requires minimum input voltage of 11.7 V to maintain regulation at full load (200 mA) and exhibits 12–40 mV line regulation over Vin = 12–20 V. Output noise is 150 µVrms (10 Hz–10 Hz bandwidth), and temperature coefficient is 0.25 mV/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 10.0 V nominal; 9.6–10.4 V over full load (1–200 mA) and temperature (–55°C to +125°C) |
| Input Voltage Range | 12–20 V; minimum 11.7 V required to sustain regulation at 200 mA load |
| Output Current | Up to 200 mA continuous; peak short-circuit current drops to ~100 mA at +125°C |
| Quiescent Current | 350–600 µA typical; increases ≤100 µA over full load and input voltage range |
| Ripple Rejection | 43–57 dB at 120 Hz; enables effective suppression of rectified AC noise in offline supplies |
| Thermal Shutdown | Activates above safe junction temperature; automatically recovers after cooldown-no latch-up |
| Operating Temperature | –55°C to +125°C ambient; power dissipation derated linearly from 2 W at 25°C to 0 W at 125°C |
Pinout & Package
SOT223 package with 4-terminal configuration: pins 1 (IN), 2 (GND), 3 (OUT), and 4 (thermal pad, electrically isolated or connected to pin 2 per layout).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply connection | Accepts 12–20 V DC; must be decoupled with ≥1 µF capacitor to prevent overshoot during thermal shutdown |
| 2 (GND) | Ground reference and thermal return | Primary ground path; connects to PCB ground plane for thermal conduction and noise control |
| 3 (OUT) | Regulated 10.0 V output | Directly powers downstream logic or analog circuitry; no external compensation required |
| 4 (Tab) | Exposed thermal pad | Must be soldered to ≥2 in² copper area for rated 2 W dissipation at 25°C; electrically isolated unless tied to pin 2 |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Fully stable with zero external capacitors-reduces BOM count and board area in compact designs |
| Internal thermal shutdown | Protects against sustained overload or poor heatsinking; auto-recovery avoids system latch-up |
| Tight 2.5% initial tolerance | Minimizes post-regulation filtering needs for 10 V logic rails and analog references |
| Low 350 µA quiescent current | Enables use in always-on subsystems without compromising battery or standby power budgets |
| –55°C to +125°C operation | Validated for under-hood automotive, industrial motor drives, and outdoor telecom equipment |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Local 10 V supply for isolated analog sensor interfaces and relay drivers in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Fixed-output linear regulator providing clean, thermally robust bias for precision ADC front-ends and optocoupler inputs. Use Value: Eliminates need for external thermal foldback circuitry while maintaining <±1% output drift over –40°C to +85°C operating range. |
Use Scenario: Powering microcontroller peripherals and CAN transceiver bias in door module ECUs exposed to under-dash thermal cycling. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering stable 10 V to LIN bus interface ICs and EEPROM programming circuits. Use Value: Withstands 125°C ambient with full 200 mA capability when mounted on 2 in² copper, avoiding thermal throttling in sealed enclosures. |
| Medical Diagnostic Sensor Front-Ends | Outdoor Wireless Sensor Nodes |
Use Scenario: Biasing low-noise instrumentation amplifiers and 12-bit SAR ADCs in portable ultrasound probe electronics. IC Role / Device Role / Timing Role: Low-noise (150 µVrms) 10 V source replacing switching regulators to avoid EMI coupling into analog signal paths. Use Value: Ripple rejection >43 dB at 120 Hz suppresses mains-borne noise from wall adapters feeding the system. |
Use Scenario: Supplying 10 V to LoRaWAN transceiver ICs and environmental sensors in solar-powered field gateways operating across –40°C to +70°C. IC Role / Device Role / Timing Role: High-temperature-stable local regulator enabling reliable startup and RF transmission under cold-soak and solar-heated conditions. Use Value: Guaranteed operation down to –55°C ensures cold-start functionality in arctic deployments without preheating circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7810CDT/NOPB | TO-252 package; higher quiescent current (5.5 mA typ); requires 2.5 V dropout; no thermal shutdown auto-recovery | Less suitable for high-temp or low-quiescent designs; needs external heat sink above 150 mA | Prefer ZSR1000CL where board space, thermal autonomy, or standby current are constrained |
| MCP1703T-1002E/MB | SOT-23 package; 250 mA max; 2 µA quiescent current; 600 mV dropout; no internal current limit | Better for ultra-low-power battery systems but lacks short-circuit protection and thermal robustness | Prefer ZSR1000CL where fault tolerance, 200 mA drive, and –55°C operation are mandatory |
Compared with LM7810CDT/NOPB, ZSR1000CL offers 15× lower quiescent current and integrated thermal recovery; versus MCP1703T-1002E/MB, it trades ultra-low IQ for ruggedized protection and wider temperature compliance-critical for industrial deployment.
Availability
ZSR1000CL is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical sensor subsystems requiring stable component supply with long-term lifecycle assurance.
Supply support for ZSR1000CL 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
Zetex Semiconductors (now part of Diodes Incorporated) is a UK-based designer of high-reliability analog and power semiconductors, ISO 9001 and TS16949 certified.
The ZSR Series was developed specifically for local voltage regulation in thermally demanding, space-limited embedded systems-emphasizing fault resilience, zero-external-component stability, and extended temperature operation.
FAQ
What is the minimum input voltage required for ZSR1000CL to regulate at full 200 mA load?
The ZSR1000CL requires a minimum input voltage of 11.7 V to maintain 10.0 V output regulation at 200 mA load and 25°C ambient, per datasheet Section 4. Input voltage must increase with temperature due to thermal derating of power dissipation-up to 12.5 V recommended at 100°C ambient for margin.
Can ZSR1000CL operate without an input bypass capacitor?
No-Zetex explicitly recommends a ≥1 µF capacitor across the IN pin to suppress voltage transients during thermal shutdown events, especially when supplied from inductive sources. Omission risks exceeding the 20 V absolute maximum input rating during shutdown-induced back-EMF.
Is the SOT223 thermal pad (pin 4) electrically connected internally?
No-the SOT223 thermal pad (pin 4) is electrically isolated from all internal circuitry. It may be left floating or connected to pin 2 (GND) externally via PCB copper for enhanced thermal performance, but must never be tied to IN or OUT.
How does ZSR1000CL handle short-circuit conditions?
Under short-circuit, ZSR1000CL activates internal current limiting (~100–200 mA depending on temperature), then triggers thermal shutdown if junction exceeds safe threshold. Once cooled below trip point, it automatically resumes regulation-no manual reset or external latch required.
ZSR1000CL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 10V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 600 µA
- Current - Supply (Max):
- -
- PSRR:
- 57dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92
ZSR1000CL FAQ
1.How can I place an order for ZSR1000CL through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSR1000CL 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 ZSR1000CL reliable?
The price and inventory of ZSR1000CL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSR1000CL is usually 5 days.
3.What payment methods are accepted for ZSR1000CL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSR1000CL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSR1000CL?
ZSR1000CL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSR1000CL 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 ZSR1000CL?
For technical support, including ZSR1000CL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSR1000CL requirements.
6.How does Aetrix verify that ZSR1000CL is sourced from the original manufacturer or authorized distributors?
All ZSR1000CL 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 ZSR1000CL meets industry standards.
7.What is the process for return or replacement of ZSR1000CL?
All ZSR1000CL units undergo pre-shipment inspection (PSI). If there is an issue with ZSR1000CL, 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 ZSR1000CL part is unused and in its original packaging.
Return procedure for ZSR1000CL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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