My Inquiry
My Account
Diodes Incorporated 1.5KE170CA-T
- Part No.:
- 1.5KE170CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE170CA-T.pdf
- Description:
- TVS DIODE 145VWM 234VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,262
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE170CA-T from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge protection in DC power lines and signal interfaces. It features a 145V reverse standoff voltage (VRWM), 162–179V breakdown range (VBR), 234V max clamping voltage (VC) at 6.4A peak pulse current, and operates from –55°C to +175°C.
For engineers reviewing the 1.5KE170CA-T datasheet, 1.5KE170CA-T pinout, 1.5KE170CA-T application, or 1.5KE170CA-T equivalent, key selection criteria include clamping ratio (VC/VBR ≈ 1.45), unidirectional vs. bidirectional polarity, DO-201 axial lead compatibility, and AEC-Q200 readiness for automotive-grade surge immunity.
Technical Context
This TVS diode uses glass-passivated silicon junction technology to achieve fast response time (<1.0 ns) and stable clamping under repetitive 8.3 ms half-sine surges up to 200A IFSM. Its bidirectional construction enables symmetrical overvoltage suppression on AC-coupled or floating lines without polarity dependency.
The device complies with RoHS 3 and halogen/antimony-free "Green" standards, with UL 94V-0 epoxy molding and moisture sensitivity level 1. It is rated for 5.0W steady-state dissipation at TL = 75°C with 9.5 mm lead length, supporting industrial and automotive board-level ESD/EFT protection per IEC 61000-4-2/4-4/4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W - sustains single 1.0 ms transient events without failure |
| Reverse Standoff Voltage | 145 V - maximum continuous DC or RMS AC voltage before conduction begins |
| Breakdown Voltage Range | 162–179 V @ 1.0 mA - tight VBR tolerance ensures predictable turn-on threshold |
| Max Clamping Voltage | 234 V @ 6.4 A IPP - limits downstream voltage stress during surge |
| Operating Temperature | –55°C to +175°C - supports under-hood automotive and industrial environments |
| Leakage Current | ≤5.0 µA @ 145 V - minimal standby power loss and signal integrity impact |
| Clamping Ratio | 1.45 (234 V / 162 V) - low ratio indicates efficient energy diversion with minimal overshoot |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with tin-finished leads, 1.12 g mass, UL 94V-0 epoxy body, and marking "1.5KE170CA" only (no cathode band, confirming bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Surge current entry point (positive half-cycle) | Conducts when voltage exceeds +179 V relative to cathode; symmetric with cathode |
| Cathode (Lead 2) | Surge current entry point (negative half-cycle) | Conducts when voltage exceeds –179 V relative to anode; identical bidirectional behavior |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable VBR and low leakage across temperature and life cycle |
| Bidirectional symmetry | Identical clamping performance for ±179 V transients-no polarity routing constraints |
| 1500W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on 48 V DC bus lines |
| RoHS 3 & Halogen-free | Meets automotive ELV and JEDEC J-STD-020 MSL Level 1 reflow compatibility |
| Fast response time | <1.0 ns turn-on ensures protection before IC damage thresholds are exceeded |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: 24 V/48 V battery-fed control modules exposed to load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤234 V, preventing gate oxide rupture in MOSFET drivers and latch-up in 3.3 V logic. |
Use Scenario: Analog input channels (4–20 mA, 0–10 V) in programmable logic controllers subject to field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: First-line transient absorber before precision op-amps and ADC front-ends. Use Value: Maintains ≤5 µA leakage at 145 V, avoiding offset drift in µA-level current loops. |
| Telecom DC Power Feeds | Renewable Energy Inverter Control |
|
Use Scenario: -48 V telecom rectifier outputs feeding base station radios and backhaul equipment. IC Role / Device Role / Timing Role: Bidirectional clamp protecting hot-swap controllers and PMBus voltage monitors. Use Value: Symmetric clamping eliminates need for dual unidirectional devices, reducing BOM count and PCB area. |
Use Scenario: Gate drive supply rails in solar string inverters subjected to lightning-induced surges on PV input side. IC Role / Device Role / Timing Role: Secondary protection stage after MOVs, absorbing residual high-frequency energy. Use Value: 175°C max junction temperature supports operation near heatsinks and transformers without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | Same VRWM (145 V) and VC (234 V), but 600W rating in SMB package | Surface-mount only; unsuitable for high-reliability through-hole designs or high-current leads | Select when board space is constrained and surge duty is less severe than ISO 7637-2 Pulse 5a |
| 1.5SMC170CA | Same electrical specs, SMC package (DO-214AB), 1.5 kW rating, 2.5 mm lead pitch | Requires rework of footprint; lower thermal mass than DO-201 for sustained surge handling | Choose for automated assembly compatibility where DO-201 tooling is unavailable |
Compared with SMBJ170CA and 1.5SMC170CA, the 1.5KE170CA-T offers superior thermal robustness via axial leads and higher surge endurance in legacy through-hole systems, making it preferred for automotive and industrial power rail protection where mechanical reliability is critical.
Availability
1.5KE170CA-T is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC power feeds, and renewable energy inverter control requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE170CA-T 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the U.S., serving industrial, automotive, and communications markets.
The 1.5KE series is part of Diodes' high-power TVS portfolio engineered specifically for robust, cost-effective surge suppression in harsh-environment DC power systems-prioritizing clamping accuracy, thermal resilience, and automotive qualification readiness.
FAQ
What does the "CA" suffix indicate in 1.5KE170CA-T?
The "CA" suffix denotes a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional "A" variants that require correct polarity orientation, the "CA" version has no cathode marking and functions identically regardless of terminal connection direction-ideal for AC-coupled or floating signal lines.
Can 1.5KE170CA-T replace 1.5KE170A in an existing design?
No-1.5KE170A is unidirectional with a cathode band and conducts only during positive overvoltage events, while 1.5KE170CA-T is bidirectional and clamps both polarities. Substitution requires verifying circuit topology: if the line is referenced to ground and polarity is fixed, unidirectional may suffice; if floating or AC-coupled, bidirectional is mandatory to prevent reverse breakdown failure.
Is 1.5KE170CA-T qualified to AEC-Q200?
While not explicitly listed as AEC-Q200 qualified in public documentation, the 1.5KE170CA-T is manufactured in IATF 16949-certified facilities and supports PPAP documentation upon request. Diodes states that automotive-grade change control-including AEC-Q200 qualification-is available for this family; contact Diodes or Aetrix for formal qualification evidence and test reports.
How does the DO-201 package affect thermal performance compared to SMC or SMB?
The DO-201's axial leads provide superior heat conduction to PCB copper planes and chassis mounts versus surface-mount packages like SMC or SMB. With 9.5 mm lead length at TL = 75°C, it achieves 5.0 W steady-state dissipation-~30% higher than equivalent SMC devices-making it better suited for repeated surge events in high-ambient-temperature environments such as engine compartments or industrial enclosures.
1.5KE170CA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- 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
1.5KE170CA-T FAQ
1.How can I place an order for 1.5KE170CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE170CA-T 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 1.5KE170CA-T reliable?
The price and inventory of 1.5KE170CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE170CA-T is usually 5 days.
3.What payment methods are accepted for 1.5KE170CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE170CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE170CA-T?
1.5KE170CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE170CA-T 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 1.5KE170CA-T?
For technical support, including 1.5KE170CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE170CA-T requirements.
6.How does Aetrix verify that 1.5KE170CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE170CA-T 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 1.5KE170CA-T meets industry standards.
7.What is the process for return or replacement of 1.5KE170CA-T?
All 1.5KE170CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE170CA-T, 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 1.5KE170CA-T part is unused and in its original packaging.
Return procedure for 1.5KE170CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE170CA-T 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
