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Taiwan Semiconductor Corporation 1.5KE7.5C
- Part No.:
- 1.5KE7.5C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5C.pdf
- Description:
- 1500W, 7.5V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,991
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Product details
Overview
1.5KE7.5C from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 7.5V, clamps transients to ≤11.7V at 500A peak pulse current, and operates with ≤1μA leakage above 6.05V working stand-off voltage. It is used in automotive body electronics, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the 1.5KE7.5C datasheet, 1.5KE7.5C pinout, 1.5KE7.5C application, or 1.5KE7.5C equivalent, key selection criteria include its DO-201 package compatibility, unidirectional polarity marking, 10/1000μs surge rating, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and junction temperature range of –55°C to +175°C.
Technical Context
This unidirectional TVS diode uses an avalanche breakdown mechanism to clamp fast-rising transients within sub-nanosecond response time (<1.0ps from 0V to VBR). Its low dynamic impedance ensures stable clamping under high-current surges up to 500A (10/1000μs waveform), while maintaining a maximum forward voltage of 3.5V at 50A for devices with VBR ≤ 200V.
The device meets AEC-Q101 stress test requirements and complies with ISO 7637-2 for automotive electrical disturbances. Its DO-201 package supports lead-free soldering per J-STD-002, passes JESD 201 Class 2 whisker testing, and uses UL 94V-0 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 10mA | 6.75–8.25V: Ensures reliable avalanche initiation at defined test current; guarantees minimum clamping threshold |
| VWM | 6.05V: Maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| IPP (10/1000μs) | 500A: Peak surge current handling capacity; defines protection level against ISO 7637-2 Pulse 5a/b |
| VC @ IPP | ≤11.7V: Clamped voltage during 500A transient; determines maximum stress on downstream ICs |
| PPK | 1500W: Peak pulse power dissipation capability; validates robustness against short-duration energy bursts |
| Junction Temp Range | –55°C to +175°C: Enables operation in under-hood automotive and industrial environments without derating |
| Leakage @ VWM | <1μA: Minimizes standby power loss and avoids false triggering in low-power circuits |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with cathode band marking for unidirectional polarity. Leads are pure tin-plated and solderable per J-STD-002; weight ≈ 0.090g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node; completes conduction path during reverse transient |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 12V rail); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche response time | <1.0ps (0V to VBR): Enables suppression of ESD and fast transients before sensitive ICs experience overstress |
| ISO 7637-2 compliance | Pulse 1, 2a, 2b, 3a, 3b: Validated for automotive load dump and inductive switching immunity per OEM requirements |
| Dynamic impedance | Low: Maintains tight VC–VBR margin across surge current range; improves clamping consistency |
| AEC-Q101 qualification | Available (H-suffix variant): Confirmed reliability for automotive applications including temperature cycling and humidity testing |
| RoHS & halogen-free | Compliant per IEC 61249-2-21: Supports environmentally regulated production and end-of-life recycling |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protects microcontroller I/O and LIN bus transceivers from load dump and alternator ripple in 12V vehicle systems. IC Role / Device Role / Timing Role: Primary clamping device on power input and communication lines; responds within picoseconds to suppress transients before system reset or latch-up. Use Value: Limits voltage to ≤11.7V during 500A surges, preventing damage to 5V-tolerant MCU pins and ensuring functional safety compliance. |
Use Scenario: Shields analog front-end amplifiers and ADC inputs in factory-floor pressure/temperature sensors exposed to relay coil kickback. IC Role / Device Role / Timing Role: Unidirectional shunt protector on sensor supply rail; conducts only during positive overvoltage events. Use Value: Maintains <1μA leakage at 6.05V, avoiding measurement drift while clamping 10/1000μs spikes to safe levels for precision signal chains. |
| DC Power Supply Input Stage | LED Driver Protection |
Use Scenario: Installed at AC/DC converter output to absorb inrush and line-induced surges before downstream regulators. IC Role / Device Role / Timing Role: Bulk transient suppressor on main 12–24V distribution rail; handles repetitive 1500W pulses without degradation. Use Value: Withstands 200A non-repetitive forward surge (8.3ms half-sine), enabling robust startup and fault tolerance. |
Use Scenario: Safeguards constant-current LED driver ICs from inductive turn-off spikes generated by high-side MOSFET switching. IC Role / Device Role / Timing Role: Fast-acting unidirectional clamp referenced to driver ground; prevents gate oxide rupture and latch-up. Use Value: Clamps to ≤11.7V at 500A, keeping driver VDS and logic supply within SOA limits during rapid current interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ7.5A | DO-214AC (SMA) package; 7.5V VBR, 11.3V VC @ 52.6A; lower PPK = 400W | Suitable for space-constrained PCBs but requires layout redesign; lower surge rating limits use in high-energy automotive transients | Select when board area is critical and surge energy is ≤400W; verify thermal pad design for SMA package |
| ON Semiconductor 1.5KE7.5A | Same DO-201 package; tighter VBR tolerance (7.13–7.88V vs. 6.75–8.25V); identical 1500W rating and 11.3V VC | Drop-in replacement for tighter voltage control; same mechanical fit and thermal profile | Choose for improved VBR consistency in precision clamping applications; no PCB changes required |
Compared with Littelfuse SMAJ7.5A, the 1.5KE7.5C offers 3.75× higher surge power handling and axial-leaded through-hole mounting; versus ON Semiconductor 1.5KE7.5A, it provides broader VBR tolerance at identical package and clamping performance-making it suitable for cost-sensitive, high-energy protection where exact VBR is less critical than robustness.
Availability
1.5KE7.5C is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and DC power supply input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1.5KE7.5C 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and thyristors for automotive, industrial, and consumer markets.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh environments, targeting ISO 7637-2 compliance and AEC-Q101 qualification for under-hood and chassis-mounted electronics.
FAQ
What is the polarity configuration of the 1.5KE7.5C?
1.5KE7.5C is a unidirectional TVS diode with cathode-band marking indicating the high-side terminal. It conducts only during reverse-biased overvoltage events-i.e., when the cathode voltage exceeds the anode by ≥6.75V-and blocks normal forward operation. This configuration makes it ideal for protecting DC power rails where polarity is fixed and only positive transients require suppression.
Does the 1.5KE7.5C meet automotive qualification standards?
Yes-the 1.5KE7.5C is AEC-Q101 qualified when ordered with the "H" suffix (e.g., 1.5KE7.5CH). The base 1.5KE7.5C shares the same die and construction; qualification testing includes temperature cycling, highly accelerated life testing (HALT), and mechanical shock per AEC-Q101 Rev D. Full qualification documentation is available upon request for qualified variants.
What is the maximum clamping voltage of the 1.5KE7.5C under surge conditions?
The 1.5KE7.5C has a maximum clamping voltage (VC) of 11.7V at 500A peak pulse current (10/1000μs waveform). This value is guaranteed across temperature and lifetime, and represents the highest voltage seen at the protected node during worst-case transient events-enabling accurate downstream IC stress analysis and safe margining.
Can the 1.5KE7.5C be used in bidirectional applications?
No-the 1.5KE7.5C is strictly unidirectional. For bidirectional protection, Taiwan Semiconductor offers the 1.5KE7.5CA variant (with "CA" suffix), which features symmetrical breakdown in both directions and identical VBR and VC ratings. Using 1.5KE7.5C in AC or reversible-polarity circuits risks failure due to forward conduction during negative transients.
How does the 1.5KE7.5C compare to the 1.5KE7.5A in terms of voltage tolerance?
The 1.5KE7.5C has a wider breakdown voltage range of 6.75–8.25V at 10mA test current, whereas the 1.5KE7.5A specifies 7.13–7.88V. This means the 1.5KE7.5C allows greater process variation and is typically lower-cost, while the 1.5KE7.5A delivers tighter VBR control for designs requiring precise clamping thresholds-both share identical package, power rating, and clamping performance.
1.5KE7.5C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 134A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE7.5C FAQ
1.How can I place an order for 1.5KE7.5C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5C 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 1.5KE7.5C reliable?
The price and inventory of 1.5KE7.5C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE7.5C is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5C?
1.5KE7.5C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5C 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 1.5KE7.5C?
For technical support, including 1.5KE7.5C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5C requirements.
6.How does Aetrix verify that 1.5KE7.5C is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5C 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 1.5KE7.5C meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5C?
All 1.5KE7.5C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5C, 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 1.5KE7.5C part is unused and in its original packaging.
Return procedure for 1.5KE7.5C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5C Tags
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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