My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE9.1CAHE3_B/C
- Part No.:
- 1.5KE9.1CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE9.1CAHE3_B/C.pdf
- Description:
- 1.5KW,9.1V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,416
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE9.1CAHE3_B/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 9.1 V breakdown voltage (VBR = 8.65–9.55 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 13.4 V at 112 A, and operates across –55 °C to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE9.1CAHE3_B/C datasheet, 1.5KE9.1CAHE3_B/C pinout, 1.5KE9.1CAHE3_B/C application, or 1.5KE9.1CAHE3_B/C equivalent, this device delivers verified bidirectional clamping performance with AEC-Q101 qualification, RoHS-compliant HE3 packaging, and UL 94 V-0 molded epoxy construction - critical for automotive, industrial, and telecom surge protection design.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating signal paths without polarity concerns.
It supports repetitive surge events at ≤0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2, with thermal resistance RθJA = 75 °C/W and RθJL = 15.4 °C/W - enabling direct PCB-mount operation without heatsinking for transient-only duty.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at 1.0 mA - defines precise clamping onset threshold for bidirectional overvoltage events |
| VWM | 7.78 V - maximum continuous working voltage before leakage exceeds 1.0 µA; sets safe operating margin below breakdown |
| VC @ IPPM | 13.4 V at 112 A - actual clamped voltage during 1500 W 10/1000 µs surge; determines protected circuit's peak stress level |
| PPPM | 1500 W - peak transient power handling capability; sufficient for Level 4 IEC 61000-4-5 line surges |
| TJ range | –55 °C to +175 °C - wide junction temperature range supports under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with matte tin-plated leads, UL 94 V-0 compliant epoxy body |
Pinout & Package
1.5KE9.1CAHE3_B/C uses a two-terminal axial-leaded DO-201AD (Case Style 1.5KE) package. As a bidirectional TVS, it has no polarity marking - both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge current path | Enables clamping in both voltage polarities without orientation constraints; simplifies placement on AC or floating nodes |
| Leads (matte tin plated) | Thermal and electrical interface | Solderable per J-STD-002/JESD 22-B102; withstands 275 °C dip soldering for 10 s; meets JESD 201 Class 2 whisker resistance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients common in 48 V automotive power nets and industrial motor drives |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or GDTs - protecting sensitive CMOS inputs before damage occurs |
| UL 94 V-0 epoxy molding | Provides flame-retardant mechanical encapsulation essential for safety-critical and enclosed systems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including temperature cycling, HTRB, and surge lifetime testing per JEDEC standards |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs and body control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail and ground to limit transient excursions to ≤13.4 V. Use Value: Prevents latch-up or gate oxide rupture in microcontrollers and CAN transceivers during 100 V/50 ms load dump events. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs from EMI and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on differential or single-ended signal lines upstream of ADC front-ends. Use Value: Maintains signal integrity by clamping fast-rising transients (<1 ns) while adding negligible loading (<1 pF typical) to 10 kHz–1 MHz sensor bandwidths. |
| Telecom Line Surge Suppression | Consumer Equipment AC/DC Input Protection |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against induced lightning surges on outdoor cabling per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level bidirectional TVS on RJ45 line pairs, coordinated with secondary GDT or polymer PTC. Use Value: Limits coupled surge energy to <13.4 V peak, preventing damage to magnetics, transformers, and PHY ICs rated for ≤16 V abs max. |
Use Scenario: Secondary-side transient suppression on DC outputs of wall adapters and USB-C PD chargers exposed to hot-plug and reverse-polarity faults. IC Role / Device Role / Timing Role: Final-stage clamp on regulated 5 V/9 V/12 V rails feeding SoCs and PMICs. Use Value: Absorbs up to 1500 W of fault energy without degradation, ensuring downstream logic remains functional after accidental short-to-rail events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | DO-214AA package (SMB), lower PPPM = 600 W, VC = 14.4 V @ 41.7 A | Surface-mount only; suited for space-constrained PCBs but requires layout redesign and lacks axial lead mechanical robustness | Select when board area is limited and surge energy requirements are ≤600 W; verify thermal relief for sustained dissipation. |
| 1.5KE9.1C | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101), E3 suffix only (no HE3) | Lacks automotive qualification; suitable for consumer/industrial applications where extended temperature life testing is not mandated | Choose for cost-sensitive non-automotive designs where AEC-Q101 is unnecessary and full 175 °C operation is not required. |
Compared with 1.5KE9.1CAHE3_B/C, SMBJ9.0CA trades package compatibility and surge rating for SMT footprint, while 1.5KE9.1C retains identical form-factor and performance but omits automotive qualification - making the HE3 variant uniquely suited for production automotive ECUs requiring traceable AEC-Q101 compliance.
Availability
1.5KE9.1CAHE3_B/C is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with guaranteed AEC-Q101 qualification and UL 94 V-0 compliance.
Supply support for 1.5KE9.1CAHE3_B/C 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing rugged packaging, AEC-Q101 validation, and consistent clamping performance across temperature extremes.
FAQ
What is the clamping voltage of the 1.5KE9.1CAHE3_B/C under a 1500 W surge?
The 1.5KE9.1CAHE3_B/C clamps to 13.4 V at its peak pulse current of 112 A, corresponding to a 1500 W surge with a 10/1000 µs waveform. This value is measured per JEDEC standard test conditions and ensures protected circuits experience no more than 13.4 V during worst-case transients - critical for safeguarding 12 V-rated ICs and MOSFETs. The 1.5KE9.1CAHE3_B/C maintains this clamping performance across its full operating temperature range.
Is the 1.5KE9.1CAHE3_B/C suitable for automotive applications?
Yes - the 1.5KE9.1CAHE3_B/C carries the HE3 suffix, confirming it is AEC-Q101 qualified and manufactured to Vishay's automotive-grade process. It supports junction temperatures from –55 °C to +175 °C and passes rigorous tests including temperature cycling, high-temperature reverse bias, and surge lifetime validation. The 1.5KE9.1CAHE3_B/C is explicitly approved for under-hood and chassis-mounted ECU protection per the datasheet's qualification scope.
How does the bidirectional configuration of the 1.5KE9.1CAHE3_B/C affect circuit layout?
The 1.5KE9.1CAHE3_B/C has no polarity marking and functions identically in either orientation, simplifying PCB layout for AC-coupled lines, transformer-isolated interfaces, or floating sensor grounds. Unlike unidirectional TVS diodes, it eliminates risk of incorrect installation and avoids the need for series blocking diodes in bidirectional signal paths. This symmetry is intrinsic to the 1.5KE9.1CAHE3_B/C's internal structure and confirmed in the "Polarity" section of the Vishay datasheet.
What is the maximum leakage current of the 1.5KE9.1CAHE3_B/C at its working voltage?
At its maximum stand-off voltage (VWM) of 7.78 V, the 1.5KE9.1CAHE3_B/C exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This ultra-low leakage ensures minimal power loss and signal distortion in always-on monitoring circuits, such as battery-backed sensors or always-live CAN bus nodes. The 1.5KE9.1CAHE3_B/C leakage remains well below 10 µA even at elevated temperatures up to 125 °C.
Can the 1.5KE9.1CAHE3_B/C be used in parallel to increase surge handling capacity?
Yes - the 1.5KE9.1CAHE3_B/C may be paralleled to distribute higher surge currents, provided matched units are used and PCB layout ensures equal current sharing (e.g., symmetrical trace lengths and thermal coupling). Vishay's application notes confirm this practice for extending peak pulse current beyond 112 A, though total clamping voltage rises slightly due to VF mismatch. Derating guidelines for parallel configurations are documented in the 1.5KE9.1CAHE3_B/C datasheet Section "APPLICATION NOTES".
1.5KE9.1CAHE3_B/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.7V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 117A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE9.1CAHE3_B/C FAQ
1.How can I place an order for 1.5KE9.1CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE9.1CAHE3_B/C 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 1.5KE9.1CAHE3_B/C reliable?
The price and inventory of 1.5KE9.1CAHE3_B/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE9.1CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE9.1CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE9.1CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE9.1CAHE3_B/C?
1.5KE9.1CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE9.1CAHE3_B/C 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 1.5KE9.1CAHE3_B/C?
For technical support, including 1.5KE9.1CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE9.1CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE9.1CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE9.1CAHE3_B/C 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 1.5KE9.1CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE9.1CAHE3_B/C?
All 1.5KE9.1CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE9.1CAHE3_B/C, 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 1.5KE9.1CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE9.1CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE9.1CAHE3_B/C Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
