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Taiwan Semiconductor Corporation 1.5SMC36CH
- Part No.:
- 1.5SMC36CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CH.pdf
- Description:
- 1500W, 36V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,801
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Product details
Overview
1.5SMC36CH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 36V working stand-off voltage (VWM), 32.4–39.6V breakdown voltage (VBR), 1500W peak pulse power (PPK), and clamps transients to ≤52.0V at 30A IPPM - deployed in CAN bus interfaces, 24V DC power inputs, and ESD-sensitive sensor signal lines.
For engineers reviewing the 1.5SMC36CH datasheet, 1.5SMC36CH pinout, 1.5SMC36CH application, or 1.5SMC36CH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, and DO-214AB (SMC) package thermal performance (RθJA = 50°C/W).
Technical Context
The 1.5SMC36CH implements a glass-passivated silicon junction optimized for fast transient suppression without degradation under repetitive surges. Its bidirectional architecture enables symmetrical clamping across both polarities, eliminating need for polarity-aware layout - critical for AC-coupled or floating signal paths like automotive LIN/CAN stubs and industrial RS-485 transceivers.
Thermally, it leverages the DO-214AB package's low RθJC (15°C/W) to sustain 6.5W steady-state dissipation while maintaining junction temperature ≤150°C. Electrical behavior conforms to ANSI/IEEE C62.35, with leakage <1μA at 29.1V and temperature coefficient of VBR at 0.099%/°C - enabling stable operation across -55°C to +150°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 29.1 V - maximum continuous reverse/forward voltage before clamping begins; sets safe operating margin for 24V nominal systems |
| VBR min/max | 32.4 V / 39.6 V @ 1mA - verified breakdown threshold ensures predictable turn-on during transients |
| VC @ IPPM | 52.0 V @ 30A - clamping voltage defines worst-case overvoltage seen by protected ICs during 10/1000μs surge |
| PPK | 1500 W - peak pulse power rating per 1ms waveform; supports IEC 61000-4-5 Level 4 surge immunity |
| IR @ VWM | <1 μA - ultra-low leakage preserves battery life and avoids false triggering in high-impedance circuits |
| TJ max | +150 °C - junction temperature limit compatible with under-hood automotive environments |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 0.210g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with coplanar matte tin-plated leads, cathode band marking for unidirectional variants; 1.5SMC36CH is bidirectional and marked with "EUJ" code - no polarity marking required. Leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional current path | Both terminals function identically - enables placement without orientation check; eliminates risk of reverse installation in automated SMT lines |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, body electronics, and ADAS power domains |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - meets OEM-level EMC requirements |
| Fast response time | <1.0 ps - clamps before sensitive downstream logic or analog circuitry can be damaged by nanosecond-scale ESD events |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement prior to reflow - simplifies manufacturing and reduces handling cost |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance |
Applications
| Automotive CAN Bus Protection | Industrial 24V Power Input |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair against load dump, jump-start spikes, and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before transceiver input. Use Value: Limits voltage excursion to ≤52.0V during 30A transients - preserving ISO 11898-2 receiver integrity and preventing bus lockup. |
Use Scenario: Safeguarding 24V DC input stage of PLC I/O modules against switching surges and lightning-induced ring waves. IC Role / Device Role / Timing Role: Primary front-end surge suppressor mounted upstream of input filter and DC-DC converter. Use Value: Absorbs 1500W peak pulses without failure - maintains system uptime during factory power grid disturbances. |
| Telecom PoE Interface | Sensor Signal Line Protection |
Use Scenario: Shielding Power over Ethernet (PoE) data pairs from induced surges in outdoor security camera installations. IC Role / Device Role / Timing Role: Bidirectional TVS on each twisted pair to suppress common-mode transients while preserving signal integrity. Use Value: Clamps to 52.0V within <1ps - prevents damage to IEEE 802.3af/at PHYs without adding capacitance that degrades 100BASE-TX eye diagram. |
Use Scenario: Guarding analog outputs of pressure/temperature sensors in HVAC control panels exposed to relay coil kickback. IC Role / Device Role / Timing Role: Low-leakage TVS placed at sensor PCB edge to intercept fast-rising transients before op-amp input stage. Use Value: Sub-1μA leakage at 29.1V avoids measurement offset; 52.0V clamping protects 3.3V/5V ADC reference rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Same DO-214AA (SMB) package; lower PPK (600W); higher VC (60.0V @ 10A) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or IEC 61000-4-5 Level 4 | Select only when board space constraints prevent DO-214AB use and surge threat level is ≤600W |
| SMCJ36CA | Identical DO-214AB (SMC) package and 1500W rating; slightly higher VBR (34.2–37.8V) and VC (50.0V @ 30A) | Same automotive/industrial use cases; tighter VBR tolerance improves design margin consistency | Preferred where tighter VBR distribution (±5%) is required for robustness across temperature and lot variation |
Compared with 1.5SMC36CH, SMBJ36CA offers smaller footprint but reduced surge handling, while SMCJ36CA delivers identical package and power rating with improved VBR consistency - making it a drop-in alternative when tighter parametric control is needed without layout change.
Availability
1.5SMC36CH is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial motor drive gate driver protection, and telecom base station DC feeds requiring stable component supply and full AEC-Q101 traceability.
Supply support for 1.5SMC36CH 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, and rectifiers - serving automotive, industrial, and consumer markets since 1992.
The 1.5SMCxxCH series was developed to deliver AEC-Q101-compliant, high-power TVS protection in standard SMC packaging - targeting harsh-environment applications where reliability, surge immunity, and manufacturability are co-prioritized.
FAQ
What does the "CH" suffix indicate in 1.5SMC36CH?
The "CH" suffix denotes a bidirectional configuration - meaning the 1.5SMC36CH provides symmetrical clamping for both positive and negative transients without polarity dependence. Unlike unidirectional "H" variants, 1.5SMC36CH has no cathode band marking and functions identically across both terminals, simplifying layout and assembly for AC-coupled or floating signal paths.
Is 1.5SMC36CH qualified for automotive use?
Yes, 1.5SMC36CH is AEC-Q101 qualified and tested per automotive stress standards including temperature cycling, high-temperature reverse bias (HTRB), and ESD. It also meets ISO 7637-2 Pulse 1/2a/2b/3a/3b requirements - making it suitable for under-hood and chassis-mounted applications such as body control modules, lighting drivers, and infotainment power rails.
What is the maximum clamping voltage of 1.5SMC36CH and at what current?
The maximum clamping voltage of 1.5SMC36CH is 52.0 V, measured at a peak impulse current (IPPM) of 30 A with a 10/1000 μs waveform. This value represents the worst-case voltage imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does 1.5SMC36CH differ from the unidirectional 1.5SMC36H?
1.5SMC36CH is bidirectional with symmetrical electrical characteristics in both directions, while 1.5SMC36H is unidirectional and requires correct cathode orientation during placement. The 1.5SMC36CH has identical VWM (29.1 V), VBR (32.4–39.6 V), and PPK (1500 W), but its IR specification applies across both polarities - essential for protecting AC signals or floating buses like CAN or RS-485.
What is the thermal resistance profile of 1.5SMC36CH in its DO-214AB package?
1.5SMC36CH exhibits a junction-to-ambient thermal resistance (RθJA) of 50°C/W and junction-to-case resistance (RθJC) of 15°C/W in the DO-214AB (SMC) package. These values enable reliable 6.5W steady-state power dissipation at 25°C ambient and support operation up to +150°C junction temperature - validated for under-hood automotive environments and enclosed industrial enclosures.
1.5SMC36CH 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):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 30A
- 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)
1.5SMC36CH FAQ
1.How can I place an order for 1.5SMC36CH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CH 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 1.5SMC36CH reliable?
The price and inventory of 1.5SMC36CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36CH is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CH?
1.5SMC36CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CH 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 1.5SMC36CH?
For technical support, including 1.5SMC36CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CH requirements.
6.How does Aetrix verify that 1.5SMC36CH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CH 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 1.5SMC36CH meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CH?
All 1.5SMC36CH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CH, 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 1.5SMC36CH part is unused and in its original packaging.
Return procedure for 1.5SMC36CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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