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Taiwan Semiconductor Corporation 1.5KE7.5CA R0G
- Part No.:
- 1.5KE7.5CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5CA R0G.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,965
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Product details
Overview
1.5KE7.5CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 7.5V nominal breakdown voltage (VBR min/max = 6.75V/8.25V at 10mA), 6.05V working stand-off voltage (VWM), and 134V clamping voltage (VC) at 500A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE7.5CA R0G datasheet, 1.5KE7.5CA R0G pinout, 1.5KE7.5CA R0G application, or 1.5KE7.5CA R0G equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, DO-201 mechanical data, AEC-Q101 qualification status, and real-world ESD/inductive-spike protection use cases - all confirmed from Taiwan Semiconductor's official O2104 datasheet.
Technical Context
The 1.5KE7.5CA R0G is a junction-based silicon avalanche diode optimized for unidirectional or bidirectional transient suppression. Its low dynamic impedance and sub-nanosecond response (<5.0ns for bidirectional mode) enable rapid clamping during fast-rising EFT or load-dump events.
It operates across –55°C to +175°C junction temperature range, supports 1500W non-repetitive peak pulse power (10/1000μs waveform), and maintains <1μA blocking leakage above 10V - critical for low-power standby circuits in automotive ECUs and industrial PLC I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT=10mA | 6.75–8.25V: Ensures reliable avalanche conduction onset within ±10% of nominal 7.5V under standard test conditions. |
| VWM | 6.05V: Maximum continuous reverse voltage before significant leakage; allows safe operation on 5V logic or 6V sensor supply rails. |
| VC @ IPP=500A | 134V: Clamped voltage during worst-case 10/1000μs surge; limits downstream IC stress below 150V absolute maximum ratings. |
| PPK | 1500W: Peak pulse power handling per JEDEC standard; sustains single high-energy transients without failure. |
| ID @ VWM | <1μA: Ultra-low leakage preserves battery life in always-on automotive modules and avoids false triggering in high-impedance sensing nodes. |
| TJ max | +175°C: Enables placement near hot components (e.g., power MOSFETs, motor drivers) without thermal derating concerns. |
| Package | DO-201: Industry-standard axial-leaded package with UL 94V-0 molding compound and pure tin-plated leads compliant with J-STD-002. |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; 1.5KE7.5CA R0G is bidirectional and marked with part number only - no polarity band required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (reversible) | Bidirectional avalanche junction | Either lead serves as anode or cathode depending on transient polarity - enables symmetric clamping on AC lines or floating DC buses. |
| Lead 1 / Lead 2 | Current path terminals | Leads are electrically identical; soldering either end first has no functional impact - simplifies manual or automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control, body electronics, and ADAS power domains. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) immunity requirements out-of-the-box. |
| Fast bidirectional response | <5.0ns turn-on time ensures clamping activation before sensitive CMOS inputs or analog front-ends experience overvoltage damage. |
| Low dynamic impedance | Minimizes voltage overshoot during high-di/dt events - critical for protecting CAN transceivers and microcontroller I/O pins. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance for global OEMs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed upstream of LDO regulators and MCU power inputs. Use Value: Limits transient voltage to ≤134V, preventing latch-up or gate oxide rupture in 16V-rated power management ICs. |
Use Scenario: 4–20mA current loop input of PLC analog module subjected to ESD and cable coupling noise. IC Role / Device Role / Timing Role: Primary protection device across signal and return lines before precision op-amp front-end. Use Value: Sub-5ns response captures fast EFT bursts before they distort low-level mV-range sensor signals. |
| LED Driver Overvoltage Clamp | DC Motor Control Board Surge Suppression |
Use Scenario: Constant-current LED driver board powered from 24V supply, vulnerable to back-EMF from nearby relay switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to shunt inductive kickback energy. Use Value: 1500W surge rating absorbs repetitive 100V/10A spikes without degradation - extends board field life beyond 100k cycles. |
Use Scenario: H-bridge motor controller PCB where flyback voltage from brushed DC motor exceeds MOSFET VDS rating. IC Role / Device Role / Timing Role: Bidirectional clamp across motor terminals to limit voltage reversal during braking. Use Value: Symmetric clamping prevents reverse-bias breakdown of bootstrap capacitors and gate drivers during regenerative braking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | Lower peak power (600W), smaller SMB package (surface-mount), lower clamping voltage (12.9V @ 49A). | Better suited for space-constrained PCBs with moderate surge exposure (e.g., consumer IoT), not automotive load dump. | Select SMBJ7.5CA when board area is limited and surge energy is ≤600W; avoid for ISO 7637-2 Pulse 5a compliance. |
| 1.5SMC7.5CA | Same 1500W rating and DO-214AB package; slightly higher VBR (6.8–7.9V), identical VWM (6.05V), VC = 131V @ 500A. | Compatible footprint for rework; same AEC-Q101 option available; marginally tighter VBR tolerance. | Choose 1.5SMC7.5CA if DO-214AB SMD layout already exists and axial DO-201 is not preferred - requires PCB redesign. |
Compared with SMBJ7.5CA and 1.5SMC7.5CA, the 1.5KE7.5CA R0G offers proven axial-leaded robustness for high-energy automotive transients, while maintaining full bidirectional symmetry and legacy DO-201 compatibility - making it optimal for through-hole production and high-reliability replacement scenarios.
Availability
1.5KE7.5CA R0G is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and LED driver board development requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE7.5CA R0G 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 - serving automotive, industrial, and computing markets since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in harsh environments, with AEC-Q101 qualification, ISO 7637-2 compliance, and extended temperature operation - targeting under-hood automotive, factory automation, and outdoor power equipment.
FAQ
What does the 'CA' suffix mean in 1.5KE7.5CA R0G?
The 'CA' suffix in 1.5KE7.5CA R0G indicates a bidirectional configuration - meaning the device functions identically in both polarities, with symmetrical breakdown and clamping characteristics. This distinguishes it from unidirectional 'C' variants and enables use on AC-coupled lines or floating DC buses where voltage polarity may reverse. The 1.5KE7.5CA R0G has no cathode band marking, confirming its bidirectional nature per Taiwan Semiconductor's DO-201 marking diagram.
Is 1.5KE7.5CA R0G AEC-Q101 qualified?
Yes, 1.5KE7.5CA R0G is AEC-Q101 qualified - confirmed in the "FEATURES" section of Taiwan Semiconductor's official O2104 datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD (HBM ≥8kV), validating its reliability for automotive under-hood applications such as engine control units and body control modules.
What is the clamping voltage of 1.5KE7.5CA R0G at rated surge current?
The clamping voltage (VC) of 1.5KE7.5CA R0G is 134V at 500A peak impulse current (IPP), measured under the standard 10/1000μs double-exponential waveform. This value is specified in the Electrical Specifications table on page 2 of the O2104 datasheet and defines the maximum voltage seen by downstream circuitry during worst-case transient events.
Can 1.5KE7.5CA R0G be used in place of a unidirectional TVS like 1.5KE7.5C?
No - 1.5KE7.5CA R0G is bidirectional and cannot replace unidirectional 1.5KE7.5C in circuits requiring forward conduction (e.g., DC power rail with polarity-sensitive protection). While both share identical VBR and VC specs, the 1.5KE7.5C conducts forward current like a rectifier, whereas 1.5KE7.5CA R0G blocks in both directions until breakdown. Substitution requires verifying system-level polarity behavior and clamping symmetry requirements.
What is the maximum operating temperature for 1.5KE7.5CA R0G?
The maximum junction temperature (TJ max) for 1.5KE7.5CA R0G is +175°C, as stated in the Absolute Maximum Ratings table. This allows direct mounting near heat-generating components such as power MOSFETs or motor drivers in automotive and industrial environments - provided PCB copper area and ambient conditions maintain junction temperature within this limit per the Pulse Derating Curve (Fig.2).
1.5KE7.5CA R0G 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 139A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE7.5CA R0G FAQ
1.How can I place an order for 1.5KE7.5CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5CA R0G 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 1.5KE7.5CA R0G reliable?
The price and inventory of 1.5KE7.5CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE7.5CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5CA R0G?
1.5KE7.5CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5CA R0G 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 1.5KE7.5CA R0G?
For technical support, including 1.5KE7.5CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5CA R0G requirements.
6.How does Aetrix verify that 1.5KE7.5CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5CA R0G 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 1.5KE7.5CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5CA R0G?
All 1.5KE7.5CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5CA R0G, 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 1.5KE7.5CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE7.5CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5CA R0G Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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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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