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Taiwan Semiconductor Corporation 1.5KE91CA B0G
- Part No.:
- 1.5KE91CA B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE91CA B0G.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:5,006
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Product details
Overview
1.5KE91CA B0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) in DO-201 package, designed for high-energy surge protection in automotive and industrial systems. It features a nominal breakdown voltage of 91 V, clamping voltage of 131 V at 12 A peak impulse current, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements for vehicle electronics.
For engineers reviewing the 1.5KE91CA B0G datasheet, 1.5KE91CA B0G pinout, 1.5KE91CA B0G application, or 1.5KE91CA B0G equivalent, this page delivers verified electrical parameters, mechanical packaging details, real-world use cases, and validated alternative parts - all aligned with AEC-Q101 qualification and RoHS/halogen-free compliance.
Technical Context
The 1.5KE91CA B0G operates as a bidirectional avalanche diode, providing symmetrical clamping in both polarities without polarity dependence. Its low dynamic impedance and sub-nanosecond response time (<5.0 ns from 0 V to VBR) enable effective suppression of fast transients such as EFT and load dump events.
Rated for 1500 W peak pulse power at 10/1000 µs waveform and junction temperatures up to +175 °C, it supports robust operation in under-hood automotive environments. The device exhibits a temperature coefficient of VBR of 0.106 %/°C and maintains <1 µA blocking leakage above 10 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 81.9 V / 100 V at IT = 1.0 mA - defines reliable avalanche initiation window under standardized test conditions |
| VWM | 73.7 V - maximum continuous working voltage before significant leakage begins; sets system operating margin |
| VC @ IPP | 131 V at 12 A - clamping voltage during 10/1000 µs surge; determines protected circuit's peak stress level |
| PPK | 1500 W - peak pulse power handling capability; enables survival of ISO 7637-2 Pulse 5a (load dump) |
| IPP | 12 A - peak impulse current at rated clamping voltage; used to size upstream fusing and trace routing |
| TJ max | +175 °C - maximum junction temperature; supports placement near heat sources in engine control units |
| Package | DO-201 - industry-standard axial-leaded package with UL 94V-0 molding compound and tin-plated leads |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; 1.5KE91CA B0G is bidirectional and marked with part-specific code (no polarity band required). 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 / Cathode (symmetrical) | Bidirectional avalanche junction | No functional polarity - either lead may connect to line or ground; enables single-component protection of AC or differential signals |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (EFT) without degradation |
| Fast response time | <5.0 ns rise-to-clamp - ensures suppression activates before sensitive ICs experience overvoltage damage |
| Low dynamic impedance | Enables tight clamping ratio (VC/VBR ≈ 1.44) and stable energy diversion across temperature range |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - suitable for green manufacturing programs |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting LIN bus nodes and body control modules against load dump and battery reversal transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail and ground to clamp surges before they reach MCU power pins or CAN/LIN transceivers. Use Value: Withstands 1500 W pulses and operates up to +175 °C, enabling direct integration into under-hood ECUs without derating. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Placed at connector entry point to shunt EFT bursts (IEC 61000-4-4) and inductive kickback from solenoid drivers. Use Value: Clamps to 131 V within 5 ns, limiting input stress on 16-bit ADC front-ends and preserving measurement integrity. |
| LED Driver Power Input | DC Power Supply Rail Protection |
|
Use Scenario: Securing constant-current LED driver inputs in streetlight controllers subjected to lightning-induced surges on long feeder lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24–48 V DC input, coordinated with upstream fuse and downstream buck converter. Use Value: 1500 W rating handles multi-kA induced surges; DO-201 package allows manual or automated through-hole assembly in high-volume lighting PCBs. |
Use Scenario: Protecting 48 V telecom rectifier outputs against backfeed transients and hot-swap events in distributed power architectures. IC Role / Device Role / Timing Role: Parallel-connected TVS on main DC output rail to limit voltage overshoot during sudden load removal or module insertion. Use Value: Stable VBR temperature coefficient (0.106 %/°C) ensures consistent clamping across -40 °C to +85 °C ambient operating range. |
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 SMAJ90CA | Same DO-214AC (SMA) package; lower PPK = 400 W; VC = 129 V @ 11.5 A | Not AEC-Q101 qualified; limited to commercial/industrial use; unsuitable for automotive load dump | Select when space-constrained SMT layout is required and surge energy is ≤400 W |
| ON Semiconductor 1.5SMC91CA | DO-214AB (SMC) package; PPK = 1500 W; VC = 131 V @ 12 A; same VBR range | AEC-Q101 qualified; identical electrical specs but larger footprint and higher thermal mass | Choose for higher board-level thermal dissipation needs or legacy SMC-compatible designs |
Compared with 1.5KE91CA B0G, SMAJ90CA offers surface-mount convenience at reduced surge capacity and automotive qualification, while 1.5SMC91CA matches performance in a larger, thermally robust SMC package - making the DO-201-based 1.5KE91CA B0G optimal for cost-sensitive, high-volume through-hole automotive modules.
Availability
1.5KE91CA B0G is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, LED driver power input, and DC power supply rail protection requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for 1.5KE91CA B0G 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, and rectifiers with global distribution and AEC-Q101 validation capabilities.
The 1.5KE series was developed specifically for automotive and industrial transient suppression, emphasizing high surge robustness, temperature stability, and regulatory compliance - targeting engine control, body electronics, and harsh-environment power systems.
FAQ
What does the "CA" suffix indicate in 1.5KE91CA B0G?
The "CA" suffix in 1.5KE91CA B0G denotes bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics across either terminal. This eliminates polarity concerns during PCB layout and supports AC-coupled or differential signal protection without external circuitry.
Is 1.5KE91CA B0G AEC-Q101 qualified?
Yes, 1.5KE91CA B0G is AEC-Q101 qualified. Per Taiwan Semiconductor's ordering information and product documentation, the "H" suffix indicates AEC-Q101 qualification, and the B0G variant (with green compound and date code) falls under the qualified 1.5KE series family. Full qualification data is available in TSC's AEC-Q101 stress test reports.
What is the clamping voltage of 1.5KE91CA B0G at its rated surge current?
The clamping voltage of 1.5KE91CA B0G is 131 V measured at 12 A peak impulse current (IPP) under the standard 10/1000 µs waveform. This value is specified in the Electrical Specifications table and represents the maximum voltage seen by downstream circuitry during a full-rated surge event.
Can 1.5KE91CA B0G replace unidirectional 1.5KE91A in existing designs?
No - 1.5KE91CA B0G cannot directly replace unidirectional 1.5KE91A because their electrical behavior differs: the "CA" version is bidirectional with symmetrical VBR, while "A" denotes unidirectional with anode/cathode polarity. Substitution requires verifying circuit topology, especially if forward conduction or DC biasing is involved.
What packaging options are available for 1.5KE91CA B0G?
1.5KE91CA B0G is supplied in DO-201 package with two standard packing formats: 1,250 pieces per tape-and-reel (ordering code ending in "H") and 500 pieces per ammo box (ordering code ending in "B0G"). Lead finish is pure tin, compliant with J-STD-002 for solderability.
1.5KE91CA B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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 B0G FAQ
1.How can I place an order for 1.5KE91CA B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE91CA B0G 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 B0G reliable?
The price and inventory of 1.5KE91CA B0G 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 B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE91CA B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE91CA B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE91CA B0G?
1.5KE91CA B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE91CA B0G 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 B0G?
For technical support, including 1.5KE91CA B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE91CA B0G requirements.
6.How does Aetrix verify that 1.5KE91CA B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE91CA B0G 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 B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE91CA B0G?
All 1.5KE91CA B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE91CA B0G, 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 B0G part is unused and in its original packaging.
Return procedure for 1.5KE91CA B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE91CA B0G 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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Diodes Incorporated
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