My Inquiry
My Account
Taiwan Semiconductor Corporation 1.5SMC15C
- Part No.:
- 1.5SMC15C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15C.pdf
- Description:
- 1500W, 15V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,057
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC15C from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with breakdown voltage 13.5–16.5 V at 1 mA test current, working stand-off voltage 12.1 V, and clamping voltage 22.0 V at 71 A peak pulse current. It protects power rails and I/O lines in telecom interfaces against ESD and lightning-induced surges.
For engineers reviewing the 1.5SMC15C datasheet, 1.5SMC15C pinout, 1.5SMC15C application, or 1.5SMC15C equivalent, this page delivers verified electrical specs, thermal performance, bidirectional variant clarification, and real-world surge immunity context for industrial and automotive front-end protection design.
Technical Context
The 1.5SMC15C is a unidirectional TVS diode optimized for fast clamping of transients up to 1500 W (10/1000 µs waveform), with junction-to-ambient thermal resistance of 50 °C/W and maximum junction temperature of +150 °C. Its glass-passivated junction ensures stable leakage (<1 µA at 12.1 V) and low capacitance for signal integrity.
It meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and inductive switching immunity. Polarity is marked by cathode band; moisture sensitivity level is J-STD-020 Level 1, enabling standard reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 13.5 V / 16.5 V at 1 mA - defines reliable conduction onset under surge conditions |
| VWM | 12.1 V - maximum continuous DC or RMS voltage before leakage exceeds 1 µA |
| VC @ IPPM | 22.0 V at 71 A - clamped voltage during worst-case 1500 W transient, limiting downstream stress |
| PPK | 1500 W - peak pulse power handling per 10/1000 µs waveform, per Fig.5 |
| TJ max | +150 °C - enables operation in under-hood or enclosed industrial environments |
| RθJA | 50 °C/W - thermal resistance determines required PCB copper area for sustained power dissipation |
| IR @ VWM | <1 µA - ultra-low leakage preserves battery life and high-impedance node integrity |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-diode configuration, cathode indicated by molded band. Weight: 0.210 g. UL 94V-0 rated molding compound; matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/line side for unidirectional clamping | Connected to protected line; conducts only when cathode is > anode by ≥VBR |
| Cathode | Clamp reference / ground return | Connected to system ground or lower-potential rail; carries full surge current to earth |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity |
| Fast response time <1.0 ps | Clamps ESD events before sensitive ICs experience overstress - critical for USB, RS-485, CAN |
| ISO 7637-2 compliance | Validated for automotive load-dump (Pulse 2b), inductive switch-off (Pulse 3b), and coupling noise immunity |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
| J-STD-020 Level 1 rating | Enables direct placement on PCB without pre-baking - reduces SMT process complexity and cost |
Applications
| Automotive Power Line Protection | Industrial Ethernet Port Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and chassis ground to clamp surges above 12.1 V. Use Value: Limits clamped voltage to 22.0 V during 71 A pulses, preventing damage to 24 V-rated regulators and microcontrollers. | Use Scenario: Shielding RJ45 PHY interface pins from ESD and induced surges in factory automation switches. IC Role / Device Role / Timing Role: Discrete TVS mounted at connector entry point, shunting transients to local ground plane. Use Value: Sub-1 ps response captures human-body-model (HBM) ESD before PHY ICs exceed absolute maximum ratings. |
| Telecom DSL Line Interface | Smart Meter AC/DC Power Input |
Use Scenario: Safeguarding ADSL/VDSL line drivers and receivers against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional 1.5SMC15C devices on tip/ring lines, referenced to isolated ground. Use Value: 1500 W peak power rating handles multi-kV induced surges while maintaining <1 µA leakage at 12.1 V standby. | Use Scenario: Front-end surge suppression on 230 VAC-derived DC supply rails in utility-grade meters. IC Role / Device Role / Timing Role: TVS placed after bridge rectifier and bulk capacitor to absorb switching transients and residual surges. Use Value: 22.0 V clamping voltage ensures downstream LDOs and MCU power supplies remain within safe operating area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA (Bourns) | Bidirectional; VBR = 16.7–18.5 V; same DO-214AA (SMB) package but smaller footprint and 600 W rating | Suitable for AC-coupled or differential-line protection where polarity reversal occurs | Select SMBJ15CA only if bidirectional clamping is required and peak power demand ≤600 W |
| 1.5KE15C (ON Semiconductor) | Through-hole TO-204AE (DO-41); VBR = 14.3–15.8 V; 1500 W rating but slower thermal response due to leadframe construction | Preferred for legacy through-hole designs or high-reliability military/aerospace where mounting robustness is prioritized | Choose 1.5KE15C only when SMT is not feasible and board space allows axial-leaded components |
Compared with SMBJ15CA and 1.5KE15C, the 1.5SMC15C offers superior power density (1500 W in SMC), faster response, and surface-mount compatibility - making it optimal for modern compact, high-surge industrial and automotive modules requiring automated assembly.
Availability
1.5SMC15C is available at Aetrix Electronics and suitable for automotive body control modules, industrial Ethernet gateways, smart meter power supplies, and telecom line interface cards requiring stable component supply across extended temperature and surge-prone environments.
Supply support for 1.5SMC15C 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices since 1979.
The 1.5SMC series was designed specifically for high-power, surface-mount transient suppression in automotive, industrial, and telecom infrastructure - balancing clamping precision, thermal robustness, and J-STD-020 Level 1 manufacturability.
FAQ
What is the key difference between 1.5SMC15C and 1.5SMC15CA?
The 1.5SMC15C is unidirectional - it clamps only when cathode voltage exceeds anode by ≥VBR, with polarity marked by cathode band. The 1.5SMC15CA is bidirectional: identical clamping in both directions, no polarity marking required. Both share same VBR (13.5–16.5 V), VWM (12.1 V), and 1500 W rating, but 1.5SMC15CA is used where AC signals or reverse-voltage risk exists. Always verify directionality against circuit topology before selecting 1.5SMC15C.
Does 1.5SMC15C meet automotive qualification standards?
Yes, the 1.5SMC15C meets ISO 7637-2 Pulse 1 (capacitive discharge), Pulse 2a (battery disconnect), Pulse 2b (load dump), Pulse 3a/3b (inductive switching), and is qualified per AEC-Q200 stress tests for passive components. Its DO-214AB package, J-STD-020 Level 1 rating, and -55°C to +150°C operating range make it suitable for under-hood and chassis-mounted automotive applications. Full AEC-Q200 report is available upon request for 1.5SMC15C.
What is the maximum clamping voltage of 1.5SMC15C under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC15C is 22.0 V at 71 A peak pulse current (IPPM), measured using the 10/1000 µs standard waveform per Fig.5. This value is guaranteed across temperature and lifetime, ensuring downstream components see no more than 22.0 V during worst-case transients. Derating applies above 25°C ambient per Fig.2 - at 85°C, IPPM drops to ~52 A for same VC.
Can 1.5SMC15C be used in bidirectional signal lines like RS-485?
No - 1.5SMC15C is unidirectional and will conduct continuously if reverse-biased beyond its breakdown voltage, potentially disrupting signal integrity or damaging drivers. For RS-485, CAN, or other bidirectional data lines, use the bidirectional variant 1.5SMC15CA instead. That part provides symmetrical clamping in both polarities and is explicitly rated for such applications. Using 1.5SMC15C on bidirectional lines risks latch-up or excessive leakage and is not recommended.
What PCB layout guidance applies to 1.5SMC15C for optimal surge performance?
For optimal surge performance, route 1.5SMC15C with minimal trace length between protected line and ground plane - ideally ≤2 mm - to reduce inductance that elevates clamping voltage. Use ≥2 oz copper on ground layer, connect cathode directly to solid ground pour (not daisy-chained), and avoid vias in the main current path. The suggested pad layout in TSC's Package Outline Drawing (Version S2207) specifies 2.5 × 5.0 mm pads with 2.5 mm spacing. Thermal relief on anode/cathode pads should be minimized to maximize heat dissipation for 1.5SMC15C.
1.5SMC15C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 71A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC15C FAQ
1.How can I place an order for 1.5SMC15C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15C 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 1.5SMC15C reliable?
The price and inventory of 1.5SMC15C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15C is usually 5 days.
3.What payment methods are accepted for 1.5SMC15C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15C?
1.5SMC15C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15C 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 1.5SMC15C?
For technical support, including 1.5SMC15C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15C requirements.
6.How does Aetrix verify that 1.5SMC15C is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15C 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 1.5SMC15C meets industry standards.
7.What is the process for return or replacement of 1.5SMC15C?
All 1.5SMC15C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15C, 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 1.5SMC15C part is unused and in its original packaging.
Return procedure for 1.5SMC15C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15C 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…
