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Taiwan Semiconductor Corporation 1V5KE91CA
- Part No.:
- 1V5KE91CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE91CA.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,265
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Product details
Overview
1V5KE91CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with breakdown voltage 86.5–95.5 V at 1 mA, clamping voltage 125 V at 12 A peak pulse current, and reverse stand-off voltage 77.8 V. It protects power rails and I/O interfaces against ESD, lightning surges, and inductive switching transients in industrial power supplies and automotive control modules.
For engineers reviewing the 1V5KE91CA datasheet, 1V5KE91CA pinout, 1V5KE91CA application, or 1V5KE91CA equivalent, key selection criteria include its bidirectional clamping behavior, 125 V VC at 12 A IPPM, DO-201 mechanical compatibility, and compliance with IEC 61000-4-2/4-4/4-5 immunity standards for system-level surge protection.
Technical Context
The 1V5KE91CA operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages and low incremental surge resistance for stable clamping under repetitive stress. Its bidirectional symmetry ensures identical VBR and VC characteristics in both polarities, eliminating polarity-dependent design constraints.
Designed for unclamped operation up to 175°C junction temperature, it sustains 1500 W peak pulse power (10/1000 µs waveform) with thermal derating above 75°C ambient. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for high-reliability PCB mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at IT = 1 mA - defines guaranteed avalanche conduction onset window for robust overvoltage thresholding |
| VRWM | 77.8 V - maximum continuous reverse operating voltage before leakage exceeds 5 µA, sets safe DC bias margin |
| VC @ IPPM | 125 V at 12 A - clamped voltage during 10/1000 µs surge, determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - peak pulse power handling per JEDEC standard, supports IEC 61000-4-5 Level 4 (4 kV) surge immunity |
| IR @ VRWM | <5 µA - low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | 175 °C - enables operation in under-hood automotive or enclosed industrial enclosures without forced cooling |
Pinout & Package
Package: DO-201 axial lead package with cathode band marking for unidirectional variants; for 1V5KE91CA (bidirectional), polarity marking is non-functional and terminals are symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (positive half-cycle) | Conducts surge current when voltage exceeds +VBR; electrically identical to cathode in bidirectional mode |
| Cathode | Transient current sink (negative half-cycle) | Conducts surge current when voltage exceeds –VBR; functionally interchangeable with anode for 1V5KE91CA |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable avalanche performance across temperature and lifetime, reducing parameter drift in harsh environments |
| 1500 W peak pulse power (1 ms) | Supports direct protection of 24 V/48 V DC power inputs against 4 kV IEC 61000-4-5 surges without upstream current limiting |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., EFT bursts), improving clamping precision |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance for industrial and automotive electronics manufacturing and end-of-life processing |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of H-bridge gate drivers and current-sense amplifiers from inductive kickback during MOSFET switching. IC Role / Device Role: Bidirectional TVS placed across DC bus or signal lines to clamp ±100 V transients. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic ICs by limiting transient voltage to ≤125 V at 12 A surge. | Use Scenario: ESD and load-dump protection on LIN bus transceivers and sensor inputs in door modules. IC Role / Device Role: Primary surge suppression element connected between LIN line and chassis ground. Use Value: Withstands 1000 V/100 Ω ISO 7637-2 Pulse 5a load-dump events while maintaining <5 µA leakage at 12 V nominal. |
| AC-DC Power Supply Inputs | Telecom Power Feeds |
Use Scenario: Secondary-side overvoltage clamping on 48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role: Standoff protector parallel to downstream DC-DC converters and PMICs. Use Value: Clamps 10/1000 µs surges to 125 V, allowing downstream components rated for 130 V absolute maximum to remain functional. | Use Scenario: Protection of PoE-powered equipment front-end against induced surges on 48 V PSE lines. IC Role / Device Role: Bidirectional shunt limiter on power pair before isolation transformer or DC-DC stage. Use Value: Symmetric clamping ensures equal protection for both positive and negative surge polarity common in long-cable telecom deployments. |
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 | Lower PPPM (600 W), smaller SMB package (vs. DO-201), 90 V VBR min (85.5 V), 135 V VC @ 8.9 A | Not suitable for 4 kV IEC 61000-4-5; limited to Level 3 (2 kV) or lower-energy ESD events | Select when board space is constrained and surge energy is below 100 mJ; verify thermal dissipation in SMB footprint. |
| P6SMB91CA | Same 1500 W rating and DO-201 package, but VBR 86.5–95.5 V matches exactly; differs in JEDEC qualification level and RoHS status (may contain brominated flame retardants) | Identical electrical performance; requires requalification if halogen-free compliance is mandatory | Use as drop-in alternative only if halogen-free requirement is waived; confirm Pb-free plating and whisker test compliance. |
Compared with SMBJ90CA and P6SMB91CA, the 1V5KE91CA offers identical VBR/VC specs and full halogen-free compliance in a proven DO-201 form factor, making it optimal for high-energy surge zones where reliability and regulatory alignment are critical.
Availability
1V5KE91CA is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and AC-DC power supply inputs requiring stable component supply and long-term lifecycle support.
Supply support for 1V5KE91CA 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 for industrial and automotive markets.
The 1V5KE series was developed to deliver high-energy, bidirectional transient suppression in standardized axial packages, targeting cost-sensitive yet reliability-critical applications such as factory automation and vehicle ECUs.
FAQ
What is the peak pulse current rating for 1V5KE91CA?
The 1V5KE91CA has a peak pulse current (IPPM) rating of 12.0 A under the standard 10/1000 µs double-exponential surge waveform. This value is derived from its 1500 W peak pulse power rating and 125 V clamping voltage (VC), calculated as IPPM = PPPM / VC. The device maintains this rating at TA = 25°C and derates linearly above 75°C ambient per the published derating curve.
Is 1V5KE91CA unidirectional or bidirectional?
The "CA" suffix in 1V5KE91CA explicitly denotes a bidirectional configuration. Unlike unidirectional variants (e.g., 1V5KE91A), the 1V5KE91CA exhibits symmetric breakdown and clamping characteristics in both polarities, with identical VBR (86.5–95.5 V) and VC (125 V) values regardless of voltage polarity. No cathode marking governs functionality-both terminals are electrically equivalent.
What package type does 1V5KE91CA use?
The 1V5KE91CA uses the DO-201 axial lead package, measuring 5.2 mm diameter × 9.5 mm length with tinned copper leads. It complies with JEDEC DO-201AD outline dimensions, supports wave and reflow soldering per J-STD-002, and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Does 1V5KE91CA meet RoHS and halogen-free standards?
Yes, the 1V5KE91CA is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated or chlorinated flame retardants, and the tin-plated leads are lead-free. This makes it suitable for export to EU, China, and other jurisdictions enforcing strict environmental material restrictions.
How does 1V5KE91CA compare to 1N6294A?
The 1V5KE91CA and 1N6294A are identical in electrical specifications, package, and marking-1N6294A is the JEDEC registered part number for the same device. Taiwan Semiconductor manufactures both under the same process and test flow; datasheet parameters, curves, and reliability data apply interchangeably to 1V5KE91CA and 1N6294A.
1V5KE91CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- 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):
- 12A
- 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-201AD
1V5KE91CA FAQ
1.How can I place an order for 1V5KE91CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE91CA 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 1V5KE91CA reliable?
The price and inventory of 1V5KE91CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE91CA is usually 5 days.
3.What payment methods are accepted for 1V5KE91CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE91CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE91CA?
1V5KE91CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE91CA 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 1V5KE91CA?
For technical support, including 1V5KE91CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE91CA requirements.
6.How does Aetrix verify that 1V5KE91CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE91CA 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 1V5KE91CA meets industry standards.
7.What is the process for return or replacement of 1V5KE91CA?
All 1V5KE91CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE91CA, 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 1V5KE91CA part is unused and in its original packaging.
Return procedure for 1V5KE91CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE91CA Tags
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