My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE9.1C-E3/54
- Part No.:
- 1.5KE9.1C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE9.1C-E3/54.pdf
- Description:
- TVS DIODE 7.37VWM 13.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:5,385
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE9.1C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in signal and power 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 transients and inductive switching surges.
For engineers reviewing the 1.5KE9.1C-E3/54 datasheet, 1.5KE9.1C-E3/54 pinout, 1.5KE9.1C-E3/54 application, or 1.5KE9.1C-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and RoHS-compliant commercial-grade sourcing support at Aetrix Electronics.
Technical Context
This device implements a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management, making it suitable for AC-coupled or floating signal paths.
It complies with JEDEC standard test conditions (10/1000 µs waveform, 0.01% duty cycle), supports 1.0 mA breakdown current testing, and exhibits a temperature coefficient of VBR of +0.068 %/°C - enabling predictable voltage drift under thermal stress in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at 1.0 mA - defines reliable conduction onset window for transient suppression |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 50 µA |
| VC @ IPPM | 13.4 V at 112 A - clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability per 10/1000 µs waveform |
| IPPM | 112 A - maximum non-repetitive surge current the device safely clamps |
| TJ range | –55 °C to +175 °C - extended junction temperature operation for under-hood or high-power industrial use |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded, UL 94 V-0 rated |
Pinout & Package
1.5KE9.1C-E3/54 uses the JEDEC DO-201AD axial package (Case Style 1.5KE), with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. 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) | Transient conduction path | Both ends serve as identical clamping terminals; no cathode band - enables blind placement in AC or floating lines |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Provides single-event protection against severe transients such as ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or GDTs - preserving signal integrity in high-speed interfaces |
| UL 94 V-0 epoxy molding | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance - suitable for lead-free reflow and long-life deployments |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits induced surges to ≤13.4 V, preventing latch-up or gate oxide damage in 5 V/3.3 V sensor signal chains. | Use Scenario: Shielding digital input modules from inductive kickback when switching solenoids, contactors, or relay coils in factory automation. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC input rails to absorb energy from L·di/dt events. Use Value: Handles 112 A peak surges without degradation, maintaining system uptime during frequent actuator cycling. |
| Telecom Line Interface | Consumer Power Adapter ESD |
Use Scenario: Safeguarding Ethernet PHYs and DSL line drivers against lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: First-stage protector in hybrid protection circuits, paired with GDTs or PTCs for coordinated staging. Use Value: Fast clamping action preserves data integrity during fast-rising transients (e.g., R.E.A. P.E. 60 compliant events). | Use Scenario: Secondary-level surge suppression on USB VBUS or DC barrel jack inputs in wall adapters and charging bricks. IC Role / Device Role / Timing Role: Standalone TVS across input supply rail to clamp ESD and plug-in surges before primary regulator stage. Use Value: 1500 W rating absorbs multiple 8/20 µs surges without parametric shift - validated for consumer-grade lifecycle requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | Lower 600 W PPPM, SMC package (smaller footprint), 13.1 V VC at 43.5 A | Better suited for space-constrained PCBs where 1500 W margin is not required | Select SMBJ9.0CA when board area is critical and peak surge energy is ≤600 W |
| 1.5KE9.1A-E3/54 | Unidirectional variant; same VBR/VC/PPPM, but requires correct polarity orientation | Applicable only in DC-biased or ground-referenced lines where polarity is fixed | Choose 1.5KE9.1A-E3/54 only if circuit topology guarantees consistent forward bias during normal operation |
Compared with SMBJ9.0CA and 1.5KE9.1A-E3/54, the 1.5KE9.1C-E3/54 uniquely delivers full 1500 W bidirectional clamping in the proven DO-201AD package - eliminating polarity concerns while supporting legacy through-hole assembly and high-energy industrial transients.
Availability
1.5KE9.1C-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply and long-lifecycle continuity.
Supply support for 1.5KE9.1C-E3/54 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, rectifiers, and protection devices for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - delivering consistent 1500 W clamping performance across wide temperature ranges and long operational lifetimes.
FAQ
What is the breakdown voltage tolerance of 1.5KE9.1C-E3/54?
The 1.5KE9.1C-E3/54 has a specified breakdown voltage range of 8.65 V to 9.55 V at 1.0 mA test current, yielding ±5% nominal tolerance around the 9.1 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 5 V and 3.3 V logic interfaces without false triggering.
Is 1.5KE9.1C-E3/54 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE9.1C-E3/54 certifies full RoHS compliance per EU Directive 2011/65/EU, with matte tin-plated leads meeting JESD 201 Class 1A whisker resistance. The device is compatible with lead-free reflow profiles and qualifies for commercial-grade applications requiring environmentally compliant components.
How does the bidirectional design of 1.5KE9.1C-E3/54 affect circuit layout?
The 1.5KE9.1C-E3/54 has no polarity marking and identical terminal behavior in both directions, allowing blind placement across AC-coupled lines, differential pairs, or floating grounds. Unlike unidirectional variants, it eliminates risk of reverse installation - simplifying assembly and improving yield in high-volume manufacturing of telecom and sensor modules.
What is the maximum clamping voltage of 1.5KE9.1C-E3/54 under surge conditions?
The 1.5KE9.1C-E3/54 clamps to a maximum of 13.4 V when subjected to its rated 112 A peak pulse current (10/1000 µs waveform). This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage margining - ensuring safe operation of 15 V-rated interface ICs and MOSFETs.
Can 1.5KE9.1C-E3/54 be used in parallel for higher surge capacity?
Yes, multiple 1.5KE9.1C-E3/54 units may be paralleled to increase total peak pulse power handling, provided matched VBR devices are selected and layout symmetry minimizes current imbalance. Derating guidelines in Vishay Document 88301 (Fig. 2) must be applied for elevated ambient temperatures, and thermal coupling between devices should be minimized to avoid localized overheating.
1.5KE9.1C-E3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 109A
- 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:
- 1.5KE
1.5KE9.1C-E3/54 FAQ
1.How can I place an order for 1.5KE9.1C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE9.1C-E3/54 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 1.5KE9.1C-E3/54 reliable?
The price and inventory of 1.5KE9.1C-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE9.1C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE9.1C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE9.1C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE9.1C-E3/54?
1.5KE9.1C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE9.1C-E3/54 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 1.5KE9.1C-E3/54?
For technical support, including 1.5KE9.1C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE9.1C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE9.1C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE9.1C-E3/54 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 1.5KE9.1C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE9.1C-E3/54?
All 1.5KE9.1C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE9.1C-E3/54, 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 1.5KE9.1C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE9.1C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE9.1C-E3/54 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 …
