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Toshiba Semiconductor and Storage CSLZ12V,L3F
- Part No.:
- CSLZ12V,L3F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- 2-SMD, No Lead
- Datasheet:
-
CSLZ12V,L3F.pdf
- Description:
- 12V ZNR DIODE SOD-962 OVP
- Quantity:
- Payment:
- Shipping:
Inventory:5,359
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Product details
Overview
CSLZ12V,L3F from Toshiba Electronic Devices & Storage Corporation is a silicon epitaxial planar Zener diode designed for voltage regulation and transient overvoltage protection in low-power signal lines. It delivers a nominal Zener voltage of 12 V (min 11.4 V, max 12.6 V) at 5 mA test current, with dynamic impedance of 30 Ω max, clamp voltage of 28 V at 2.5 A peak pulse current, and total capacitance of 13 pF at 0.5 V reverse bias - deployed in ESD- and surge-prone interfaces such as USB data lines and sensor I/O.
For engineers reviewing the CSLZ12V,L3F datasheet, CSLZ12V,L3F pinout, CSLZ12V,L3F application, or CSLZ12V,L3F equivalent, key selection criteria include its 12 V Zener tolerance (±5%), 72 W peak pulse power per IEC61000-4-5, ±20 kV ESD robustness per IEC61000-4-2 (contact), 150 mW steady-state dissipation on small PCB pads, and SL2 surface-mount package compatibility with automated assembly.
Technical Context
The CSLZ12V,L3F operates as a bidirectional voltage clamp in reverse-biased configuration, leveraging avalanche breakdown to limit transient voltages. Its 1.5 Ω typical dynamic resistance enables fast response to sub-100 ns pulses, while its 13 pF junction capacitance ensures minimal signal distortion in high-speed digital lines up to 10 Mbps.
Designed for compliance with IEC61000-4-2 (ESD) and IEC61000-4-5 (surge), it sustains 2.5 A peak pulse current under 8/20 μs waveform without degradation. The device's thermal design supports operation up to 150°C junction temperature, with derating applied beyond 25°C ambient per specified thermal resistance curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.4–12.6 V at 5 mA - ensures stable clamping within ±5% tolerance for 12 V rail protection |
| Dynamic Impedance (ZZ) | ≤30 Ω - maintains tight voltage regulation during fast transients |
| Clamp Voltage (VC) | 28 V at IPP = 2.5 A - limits surge-induced stress on downstream ICs |
| Peak Pulse Power (PPK) | 72 W per IEC61000-4-5 - handles industrial-level surge events |
| Total Capacitance (Ct) | 13 pF at VR = 0.5 V - preserves signal integrity in USB 2.0 and I²C interfaces |
| ESD Withstand (Contact) | ±20 kV per IEC61000-4-2 - protects against human-body-model discharge events |
| Steady-State Power (PD) | 150 mW on 20 mm × 20 mm PCB - defines continuous thermal limits for compact layouts |
Pinout & Package
CSLZ12V,L3F uses the SL2 surface-mount package (0.6 mm × 0.3 mm, 0.2 mg typical weight), optimized for high-density PCB layouts and reflow soldering. Pin 1 is cathode (marked), Pin 2 is anode - polarity must be observed to ensure correct reverse-bias clamping behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-impedance reference node in reverse bias | Connected to protected line; conducts only during overvoltage to shunt current to ground |
| 2 (Anode) | Reference potential (typically GND or low-side return) | Provides current path during clamping; must be low-inductance connection to system ground |
Key Features
| Feature | Design Value |
|---|---|
| E24-series Zener voltage grading | Enables precise 12 V selection among standardized values without custom binning |
| Low 13 pF junction capacitance | Minimizes loading on high-speed data lines (e.g., USB D+/D−, I²C SDA/SCL) |
| ±20 kV contact ESD rating | Meets IEC61000-4-2 Level 4 for robust front-end protection in consumer electronics |
| 72 W IEC61000-4-5 surge capability | Supports industrial-grade immunity without external series impedance |
| SL2 ultra-small footprint | Reduces board area by >50% vs. SOD-323, enabling miniaturized sensor modules and wearables |
Applications
| USB 2.0 Data Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting D+ and D− lines in USB 2.0 peripherals against ESD and cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 13 pF capacitance avoids signal rise-time degradation; ±20 kV ESD rating prevents interface lockup during handling. | Use Scenario: Safeguarding analog output (4–20 mA) or digital I/O (RS-485) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-leakage Zener clamp on signal line referenced to local ground. Use Value: 0.5 μA reverse current at 9 V ensures minimal offset error; 72 W surge rating withstands inductive switching transients. |
| Automotive Body Control Module I/O | IoT Node Battery Monitoring |
Use Scenario: Protecting LIN bus or switch inputs in non-safety-critical automotive body electronics. IC Role / Device Role / Timing Role: Overvoltage limiter on 12 V supply-referenced input pins. Use Value: 12 V Zener voltage matches vehicle battery nominal; 150°C junction rating supports under-hood placement. | Use Scenario: Clamping ADC input of lithium-ion battery voltage monitor against charge pump spikes. IC Role / Device Role / Timing Role: Precision voltage reference and transient suppressor on measurement path. Use Value: ±5% VZ tolerance enables accurate 12 V rail monitoring; 30 Ω ZZ minimizes measurement error under load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2016LFG-7 | Lower 10 V Zener voltage; 10 pF capacitance; same SL2 package | Better suited for 10 V systems; slightly lower clamp voltage but reduced surge margin (50 W) | Select when tighter 10 V regulation is required and peak surge energy is below 50 W |
| PDZ12B,115 | 12 V Zener; higher 200 mW PD; SOD-323 package (1.7 × 1.3 mm) | Larger footprint; higher steady-state power but incompatible with ultra-dense layouts | Choose for legacy designs using SOD-323 or where 200 mW continuous dissipation is mandatory |
Compared with DMN2016LFG-7 and PDZ12B,115, the CSLZ12V,L3F uniquely balances 12 V precision, ultra-low capacitance, and compact SL2 packaging - making it optimal for space-constrained, high-speed interfaces requiring ±20 kV ESD and 72 W surge immunity without layout redesign.
Availability
CSLZ12V,L3F is available at Aetrix Electronics and suitable for USB interface protection, industrial sensor I/O hardening, and automotive body control module designs requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for CSLZ12V,L3F 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
Toshiba Electronic Devices & Storage Corporation is a global semiconductor manufacturer specializing in power devices, logic ICs, and discrete components, with emphasis on reliability, efficiency, and industrial-grade qualification.
The CSLZ Series is part of Toshiba's transient voltage suppression portfolio, engineered specifically for high-density, low-capacitance ESD/surge protection in portable and industrial electronics - prioritizing miniature packaging, precise Zener grading, and IEC-compliant transient immunity.
FAQ
What is the Zener voltage tolerance of CSLZ12V,L3F?
The CSLZ12V,L3F has a Zener voltage range of 11.4 V to 12.6 V at 5 mA test current, corresponding to a ±5% tolerance around the nominal 12 V rating. This E24-series grading ensures predictable clamping behavior across production lots and simplifies design margining for 12 V system protection.
Does CSLZ12V,L3F support bidirectional ESD protection?
No - the CSLZ12V,L3F is a unidirectional Zener diode configured for reverse-bias operation only. It protects against positive transients on the cathode side relative to anode (ground). For true bidirectional protection, two devices or a dedicated TVS array must be used.
What is the maximum junction temperature rating for CSLZ12V,L3F?
The CSLZ12V,L3F is rated for a maximum junction temperature (Tj) of 150°C. Derating of power dissipation is required above 25°C ambient, per the thermal resistance curves in the official Toshiba datasheet Rev.3.0.A, to maintain long-term reliability.
Can CSLZ12V,L3F be used in place of a standard 12 V Zener for voltage reference?
Yes, but with caveats: CSLZ12V,L3F provides adequate stability for non-precision references (e.g., power rail supervision), but its 30 Ω dynamic impedance and ±5% VZ tolerance make it less suitable than bandgap-based references for high-accuracy analog circuits. Its primary design intent remains transient suppression.
Is the SL2 package of CSLZ12V,L3F compatible with standard reflow profiles?
Yes - the SL2 package is qualified for lead-free reflow soldering per J-STD-020. Toshiba specifies peak temperatures up to 260°C for 30 seconds, with ramp rates compliant with IPC/JEDEC standards. No special thermal profiling is required beyond standard Class 3 assembly guidelines.
CSLZ12V,L3F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- 2-SMD, No Lead
- Series:
- CSLZ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V (Max)
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 28V (Typ)
- Current - Peak Pulse (10/1000µs):
- 2.5A (8/20µs)
- Power - Peak Pulse:
- 72W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 13pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SL2
CSLZ12V,L3F FAQ
1.How can I place an order for CSLZ12V,L3F through Aetrix?
Please submit a Request for Quotation (RFQ) for CSLZ12V,L3F 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 CSLZ12V,L3F reliable?
The price and inventory of CSLZ12V,L3F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CSLZ12V,L3F is usually 5 days.
3.What payment methods are accepted for CSLZ12V,L3F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CSLZ12V,L3F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CSLZ12V,L3F?
CSLZ12V,L3F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CSLZ12V,L3F 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 CSLZ12V,L3F?
For technical support, including CSLZ12V,L3F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CSLZ12V,L3F requirements.
6.How does Aetrix verify that CSLZ12V,L3F is sourced from the original manufacturer or authorized distributors?
All CSLZ12V,L3F 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 CSLZ12V,L3F meets industry standards.
7.What is the process for return or replacement of CSLZ12V,L3F?
All CSLZ12V,L3F units undergo pre-shipment inspection (PSI). If there is an issue with CSLZ12V,L3F, 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 CSLZ12V,L3F part is unused and in its original packaging.
Return procedure for CSLZ12V,L3F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CSLZ12V,L3F Tags
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