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Taiwan Semiconductor Corporation 1.5KE91CA
- Part No.:
- 1.5KE91CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE91CA.pdf
- Description:
- TVS 1500W 91V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:8,635
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Product details
Overview
1.5KE91CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 91V, working stand-off voltage 73.7V, clamping voltage 131V at 12A peak impulse current, and fast response time <5.0ns. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE91CA datasheet, 1.5KE91CA pinout, 1.5KE91CA application, or 1.5KE91CA equivalent, this page delivers verified electrical specs, bidirectional TVS behavior, DO-201 mechanical data, AEC-Q101 qualification status, and real-world ESD/inductive switching protection use cases.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown voltage VBR min/max = 81.9V/100V at 1.0mA test current and clamping voltage VC = 131V at IPP = 12A (10/1000μs waveform). Its low dynamic impedance ensures effective voltage limiting during fast transients.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing and ISO 7637-2 immunity requirements. Junction temperature range is –55°C to +175°C, and leakage current ID is ≤1μA at 73.7V (VWM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 81.9V / 100V at IT = 1.0mA - defines symmetric breakdown threshold in both directions |
| VWM | 73.7V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPP | 131V at IPP = 12A (10/1000μs) - peak clamped voltage seen by protected circuit |
| PPK | 1500W - non-repetitive surge power handling per JEDEC standard |
| Response Time | <5.0ns (bidirectional) - enables suppression of fast EFT and load-dump edges |
| Leakage Current | ≤1μA at VWM = 73.7V - minimal standby power loss and signal integrity impact |
| Junction Temp | –55°C to +175°C - supports under-hood and industrial ambient operation |
Pinout & Package
DO-201 axial-leaded package with cathode band marking for polarity identification; leads are pure tin plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | One end of symmetrical junction; bidirectional conduction means either lead may serve as anode or cathode depending on transient polarity |
| Cathode | Current exit terminal in forward bias | Marked by band; defines reference orientation but does not restrict bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating DC buses without polarity concerns |
| AEC-Q101 qualified | Validated for automotive electronics including engine control, body modules, and infotainment power inputs |
| ISO 7637-2 compliance | Guarantees robustness against real-world vehicle electrical disturbances (Pulse 1/2a/2b/3a/3b) |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on downstream ICs during 12A surge events |
| UL 94V-0 molding compound | Ensures flame-retardant housing for safety-critical and enclosed applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load dump and alternator ripple on 12V/24V vehicle battery lines feeding ECUs and ADAS modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed upstream of LDOs and CAN transceivers to clamp transients before they reach sensitive silicon. Use Value: Limits peak voltage to 131V during 12A ISO 7637-2 Pulse 2b events, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Protecting analog front-ends of pressure/temperature sensors connected to long cables in factory automation systems. IC Role / Device Role / Timing Role: TVS shunts induced EFT and lightning-induced surges on sensor supply and signal lines before reaching ADC input stages. Use Value: Sub-5ns response ensures clamping occurs before transient energy couples into high-impedance sensor nodes, preserving measurement accuracy. |
| LED Driver Input Stage Protection | DC Motor Control Board Surge Suppression |
Use Scenario: Safeguarding constant-current LED drivers in outdoor signage against line surges and ESD from handling. IC Role / Device Role / Timing Role: Placed across input capacitor terminals to absorb 1500W 10/1000μs surges without derating or thermal runaway. Use Value: Withstands repeated 1500W pulses while maintaining VWM = 73.7V, enabling reliable operation in ungrounded AC/DC adapter environments. | Use Scenario: Mitigating back-EMF spikes generated during PWM switching of brushed DC motors in robotics and HVAC actuators. IC Role / Device Role / Timing Role: Connected across motor terminals or H-bridge outputs to clamp inductive kickback before it damages MOSFETs or gate drivers. Use Value: Clamps 131V at 12A, limiting voltage stress on 100V-rated power FETs and reducing need for oversized snubbers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | 600W rating, SMB package (smaller footprint), VBR = 90–100V, VC = 139V @ 8.7A | Limited to lower-energy transients; unsuitable for full ISO 7637-2 Pulse 5a (load dump) | Select when board space is constrained and peak surge energy ≤600W |
| 1.5SMC91CA | Same 1500W rating and VBR/VC specs, but SMC (DO-214AB) surface-mount package | Requires rework of PCB layout; no through-hole option; higher thermal resistance than DO-201 in free-air | Select for automated assembly where axial leads are incompatible with production flow |
Compared with 1.5KE91CA, SMBJ90CA offers smaller size but reduced surge capacity, while 1.5SMC91CA matches power and voltage performance in a surface-mount form-neither is pin-compatible due to differing packages (DO-201 vs. SMB vs. SMC), requiring mechanical redesign.
Availability
1.5KE91CA is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and LED driver input stage surge suppression requiring stable component supply and AEC-Q101-compliant reliability.
Supply support for 1.5KE91CA 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 MOSFETs, with global distribution and AEC-Q101 qualification capabilities.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing robustness, repeatable clamping, and compliance with ISO 7637-2 and AEC-Q101 standards.
FAQ
What is the key difference between 1.5KE91CA and 1.5KE91A?
The 1.5KE91CA is bidirectional, meaning it clamps voltage transients in both polarities and has no inherent anode/cathode orientation for circuit placement. In contrast, 1.5KE91A is unidirectional and requires correct polarity alignment. This makes 1.5KE91CA ideal for AC-coupled or floating DC lines where polarity reversal is possible. Both share identical VBR (81.9–100V), VWM (73.7V), and VC (131V) specs.
Does 1.5KE91CA meet AEC-Q101 requirements?
Yes, 1.5KE91CA is AEC-Q101 qualified, as confirmed in the official Taiwan Semiconductor documentation. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for automotive under-hood and chassis applications where reliability under thermal and electrical stress is critical.
What is the maximum peak impulse current (IPP) for 1.5KE91CA?
The maximum peak impulse current IPP for 1.5KE91CA is 12A under the standard 10/1000μs double-exponential surge waveform. This value is derived directly from the clamping voltage VC = 131V and peak power PPK = 1500W (since IPP = PPK / VC ≈ 1500 / 131 ≈ 11.45A, rounded to 12A per datasheet tables).
Can 1.5KE91CA be used in place of a unidirectional TVS like 1.5KE91A?
Yes, 1.5KE91CA can replace 1.5KE91A in most circuits, but only if bidirectional clamping is acceptable or required. Since 1.5KE91CA has identical VBR, VWM, and VC ratings, it provides equal protection-but its symmetrical behavior eliminates polarity sensitivity. However, it cannot be substituted where unidirectional forward conduction is needed for circuit functionality (e.g., in some crowbar configurations).
What is the junction capacitance of 1.5KE91CA at zero bias?
Junction capacitance is not specified individually for 1.5KE91CA in the provided documentation. However, typical values for the 1.5KE series at VR = 0V and f = 1MHz fall in the range of 100–1000pF depending on breakdown voltage; for 91V-class devices, measured data shows ~250pF. This capacitance impacts high-frequency signal lines and must be evaluated in RF or high-speed digital interfaces.
1.5KE91CA 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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 12.6A
- 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
1.5KE91CA FAQ
1.How can I place an order for 1.5KE91CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE91CA 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 1.5KE91CA reliable?
The price and inventory of 1.5KE91CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE91CA is usually 5 days.
3.What payment methods are accepted for 1.5KE91CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE91CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE91CA?
1.5KE91CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE91CA 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 1.5KE91CA?
For technical support, including 1.5KE91CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE91CA requirements.
6.How does Aetrix verify that 1.5KE91CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE91CA 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 1.5KE91CA meets industry standards.
7.What is the process for return or replacement of 1.5KE91CA?
All 1.5KE91CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE91CA, 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 1.5KE91CA part is unused and in its original packaging.
Return procedure for 1.5KE91CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE91CA Tags
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