My Inquiry
My Account
Taiwan Semiconductor Corporation 1.5SMC9.1CAH
- Part No.:
- 1.5SMC9.1CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC9.1CAH.pdf
- Description:
- 1500W, 9.1V, 5%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:7,587
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC9.1CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 8.65–9.55 V at 1.0 mA test current, working stand-off voltage 7.78 V, clamping voltage 13.4 V at 12.6 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1.5SMC9.1CAH datasheet, 1.5SMC9.1CAH pinout, 1.5SMC9.1CAH application, or 1.5SMC9.1CAH equivalent, this device serves as a robust ESD and surge protection solution for bidirectional signal lines in automotive infotainment, industrial I/O, and telecom interfaces where fast response (<1.0 ps), low leakage (<1 µA), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The 1.5SMC9.1CAH employs a glass-passivated silicon junction optimized for bidirectional transient suppression, delivering symmetrical clamping behavior in both polarities without polarity marking requirement beyond cathode band omission. Its thermal design supports 150°C maximum junction temperature with RθJC = 15°C/W and RθJA = 50°C/W under standard PCB mounting conditions.
It meets ISO 7637-2 test requirements for automotive load-dump and switching transients, and its 1500 W peak pulse power rating (10/1000 µs waveform) is derated linearly above 25°C ambient per Fig.2. The device exhibits a VBR temperature coefficient of 0.068%/°C, enabling predictable voltage drift across operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W - sustains 10/1000 µs surge pulses up to 12.6 A without failure |
| Breakdown Voltage VBR | 8.65–9.55 V @ 1.0 mA - defines minimum voltage at which TVS enters avalanche conduction |
| Working Stand-off Voltage VWM | 7.78 V - maximum continuous DC or RMS voltage the device blocks without leakage exceeding 1 µA |
| Clamping Voltage VC | 13.4 V @ 12.6 A - limits transient voltage seen by protected circuit during worst-case surge |
| Leakage Current IR | <1 µA @ 7.78 V - ensures minimal power loss and signal integrity in standby state |
| Response Time | <1.0 ps - enables effective suppression of ESD events (IEC 61000-4-2) and fast transients |
| Junction Temperature Range | −55°C to +150°C - supports operation in under-hood automotive and industrial environments |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with no anode/cathode polarity marking required - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals conduct identically during positive or negative surges; no directional installation needed |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without degradation |
| Glass passivated junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly processes per J-STD-020 |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing |
Applications
| Automotive Infotainment Interface | Industrial RS-485 Data Line |
|---|---|
Use Scenario: Protecting HDMI, USB, or CAN-FD data lines in head units and display modules from ESD and battery transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching PHY ICs. Use Value: Prevents latch-up or permanent damage to high-speed interface ICs while maintaining signal integrity below 13.4 V clamping threshold. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to motor switching noise and ground bounce. IC Role / Device Role / Timing Role: Differential-line TVS pair (one per line) referenced to common-mode ground, suppressing common-mode surges up to ±1500 W. Use Value: Enables uninterrupted communication during 8.3 ms half-sine surges up to 200 A without bus lockup or data corruption. |
| Telecom Base Station Front-End | Smart Meter Communication Port |
Use Scenario: Shielding RF front-end LNAs and antenna switches from lightning-induced surges on coaxial feedlines. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS mounted at SMA connector interface to minimize insertion loss and preserve RF bandwidth. Use Value: Clamps transients within 1 ps while adding <1 pF junction capacitance - critical for sub-6 GHz LTE/5G signal fidelity. |
Use Scenario: Securing HPLC (HomePlug AV) or NB-IoT modem ports in utility meters against induced surges from nearby power lines. IC Role / Device Role / Timing Role: Primary overvoltage protector on AC-coupled data lines, coordinated with secondary GDT or MOV for multi-stage protection. Use Value: Survives repeated 10/1000 µs surges per IEC 61000-4-5 Level 3 (4 kV) without parameter shift or leakage increase. |
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 | 600 W rating, SMB package (smaller footprint), VC = 14.4 V @ 8.3 A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or high-current load dumps | Select when board space is constrained and peak surge energy ≤600 W suffices |
| 1.5KE9.1CA | Through-hole DO-201 package, same 1500 W rating but slower thermal response and higher RθJA (~65°C/W) | Not suitable for automated SMT assembly; requires wave solder or hand-soldering | Select only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ9.0CA and 1.5KE9.1CA, the 1.5SMC9.1CAH delivers superior surge handling in a compact SMT package with automotive-grade qualification, making it the preferred choice for new automotive and industrial designs requiring AEC-Q101 compliance and full ISO 7637-2 coverage.
Availability
1.5SMC9.1CAH is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial RS-485 networks, and telecom base station front-ends requiring stable component supply, AEC-Q101 traceability, and ISO 7637-2 validated surge performance.
Supply support for 1.5SMC9.1CAH 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, with global distribution and AEC-Q101 certified production lines.
The 1.5SMC9.1CAH belongs to TSC's automotive-qualified SMC-family TVS portfolio, engineered specifically for robust, bidirectional transient protection in harsh environments where reliability, fast response, and standardized surge compliance are mandatory.
FAQ
What does the "CAH" suffix indicate in 1.5SMC9.1CAH?
The "CAH" suffix denotes a bidirectional configuration with AEC-Q101 qualification and DO-214AB (SMC) packaging. Unlike unidirectional "H" variants, the 1.5SMC9.1CAH provides symmetrical clamping for both positive and negative transients without polarity-sensitive installation - essential for differential or AC-coupled signal lines.
Is 1.5SMC9.1CAH suitable for protecting USB 2.0 data lines?
Yes, the 1.5SMC9.1CAH is appropriate for USB 2.0 protection when placed at the connector interface. Its 13.4 V clamping voltage exceeds the USB 2.0 3.3 V signaling level but remains safe for downstream 5 V tolerant PHYs; its sub-1 pF junction capacitance avoids signal integrity degradation at 480 Mbps data rates.
How does 1.5SMC9.1CAH differ from 1.5SMC9.1AH?
The 1.5SMC9.1AH is unidirectional with a cathode band marking and forward voltage drop (~3.5 V), while the 1.5SMC9.1CAH is bidirectional, lacks polarity marking, and clamps equally in both directions. Their VBR, VWM, and VC values are nearly identical, but only the CAH variant supports AC or differential signal protection without external circuitry.
Does 1.5SMC9.1CAH meet IEC 61000-4-2 ESD immunity requirements?
Yes, the 1.5SMC9.1CAH is rated for >30 kV ESD contact discharge due to its <1.0 ps response time and low clamping voltage. It is routinely deployed in front-end protection circuits for IEC 61000-4-2 Level 4 (8 kV contact / 15 kV air) compliance, especially when combined with series impedance for current limiting.
What is the maximum recommended PCB pad size for 1.5SMC9.1CAH in DO-214AB package?
Taiwan Semiconductor recommends a minimum pad layout per their Package Outline Drawing: 2.5 mm × 5.5 mm per terminal with 2.3 mm center-to-center spacing. Adequate copper area (≥25 mm² per terminal) is required to achieve specified RθJA = 50°C/W and sustain 1500 W peak power without thermal runaway during transient events.
1.5SMC9.1CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.78V
- 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 ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC9.1CAH FAQ
1.How can I place an order for 1.5SMC9.1CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC9.1CAH 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 1.5SMC9.1CAH reliable?
The price and inventory of 1.5SMC9.1CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC9.1CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC9.1CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC9.1CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC9.1CAH?
1.5SMC9.1CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC9.1CAH 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 1.5SMC9.1CAH?
For technical support, including 1.5SMC9.1CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC9.1CAH requirements.
6.How does Aetrix verify that 1.5SMC9.1CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC9.1CAH 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 1.5SMC9.1CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC9.1CAH?
All 1.5SMC9.1CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC9.1CAH, 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 1.5SMC9.1CAH part is unused and in its original packaging.
Return procedure for 1.5SMC9.1CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC9.1CAH 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
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 …
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…
