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Taiwan Semiconductor Corporation 1.5SMC36AH
- Part No.:
- 1.5SMC36AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36AH.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,262
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Product details
Overview
1.5SMC36AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in power rails and signal lines. It features a 34.2–37.8 V breakdown voltage (VBR), 30.8 V working stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 31 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform - deployed in telecom front-ends and automotive body control modules.
For engineers reviewing the 1.5SMC36AH datasheet, 1.5SMC36AH pinout, 1.5SMC36AH application, or 1.5SMC36AH equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, AEC-Q101 qualification status, DO-214AB package thermal resistance (RθJC = 15 °C/W), and leakage current ≤1 µA at 30.8 V.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR (34.2–37.8 V), it avalanches into low-impedance conduction to divert surge energy away from downstream ICs. Its glass-passivated junction ensures stable breakdown and fast response (<1.0 ps), while the DO-214AB case supports automated SMT placement and meets UL 94V-0 flammability.
Thermal design relies on its RθJA = 50 °C/W and RθJC = 15 °C/W ratings, enabling effective heat dissipation during repetitive transients. The device complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - confirming suitability for high-reliability reflow processes without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 34.2–37.8 V - defines minimum and maximum avalanche initiation threshold under standardized test conditions |
| VWM | 30.8 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPPM = 31 A | 49.9 V - clamped voltage seen by protected circuit during full 1500 W transient event |
| IR @ VWM | <1 µA - ensures negligible standby power loss and signal integrity in high-impedance circuits |
| PPK | 1500 W - peak pulse power handling capability per 10/1000 µs waveform per IEC 61000-4-5 |
| TJ Range | −55 to +150 °C - operational junction temperature range supporting under-hood automotive use |
| Package | DO-214AB (SMC) - industry-standard surface-mount outline with 7.11 × 6.22 mm footprint and 2.34 mm height |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode band marking polarity. Weight ≈ 0.210 g. Meets J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or return path; forms current sink during clamping |
| Cathode | Protected line input | Connected to supply rail or signal line requiring overvoltage protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and infotainment power supplies |
| Clamping voltage ≤49.9 V at 31 A | Ensures downstream 3.3 V/5 V logic ICs remain within absolute maximum ratings during ISO 7637-2 transients |
| Leakage <1 µA at 30.8 V | Preserves battery life in always-on systems and avoids false triggering in high-impedance sensor interfaces |
| Fast response <1.0 ps | Responds before ESD events (IEC 61000-4-2) damage sensitive CMOS inputs |
| Moisture Sensitivity Level 1 | Enables direct placement without pre-baking - reduces manufacturing cost and cycle time |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power lines against load dump and jump-start surges in vehicle body electronics. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBAT and chassis ground to clamp transients above 30.8 V. Use Value: Limits voltage to ≤49.9 V during 1500 W pulses, preventing damage to CAN transceivers rated for 40 V absolute max. | Use Scenario: Safeguarding analog input channels of programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Front-end TVS on 24 V sensor supply rail, upstream of LDO regulators and ADC drivers. Use Value: Sub-1 µA leakage avoids offset errors in precision 24-bit measurement circuits; DO-214AB enables compact PCB layout. |
| Telecom DC Power Input | Consumer USB-C Port Protection |
Use Scenario: Secondary surge protection on −48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to system ground, clamping negative-going transients on the −48 V rail. Use Value: Withstands repeated ISO 7637-2 Pulse 1 (inductive switch-off) events without degradation due to glass-passivated junction. | Use Scenario: Overvoltage guard on VBUS line of USB-C receptacles in portable docking stations. IC Role / Device Role / Timing Role: Clamps 20 V+ transients from hot-plug or cable coupling before they reach USB PD controller ICs. Use Value: 49.9 V clamping ensures protected devices (e.g., TUSB1046) stay within 5.5 V absolute max on VCONN/VDD pins via proper cascade design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Same DO-214AA package; lower PPK = 600 W; VC = 58.1 V @ 10.3 A | Not AEC-Q101 qualified; limited to industrial/commercial grade | Select when cost sensitivity outweighs automotive qualification and 1500 W surge margin |
| 1.5KE36A | Through-hole DO-15 package; same VBR/VC specs; PPK = 1500 W | Requires wave soldering; incompatible with fully SMT production lines | Choose only for legacy through-hole designs or prototyping where rework tolerance is prioritized |
Compared with SMBJ36A and 1.5KE36A, the 1.5SMC36AH delivers higher surge robustness in a smaller SMT footprint, maintains AEC-Q101 compliance for automotive deployment, and enables automated assembly - making it optimal for new designs targeting IPC Class 3 reliability and space-constrained layouts.
Availability
1.5SMC36AH is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and consumer docking stations requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC36AH 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 - headquartered in Hsinchu Science Park with global distribution and AEC-Q101 validation labs.
The 1.5SMCxxAH series targets high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust glass-passivated junction construction for long-term stability.
FAQ
What is the breakdown voltage range for the 1.5SMC36AH?
The 1.5SMC36AH has a guaranteed breakdown voltage (VBR) range of 34.2 V to 37.8 V when tested at IT = 1 mA. This specification is measured after applying the square-wave test current for 30 ms and reflects the device's precise avalanche threshold - critical for coordinating with downstream overvoltage protection thresholds in 24 V systems.
Is the 1.5SMC36AH suitable for automotive applications?
Yes, the 1.5SMC36AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b requirements - confirming its suitability for automotive power rail protection including body control modules, infotainment power supplies, and CAN/LIN bus interfaces. Its −55 °C to +150 °C operating range and JESD201 Class 2 whisker resistance further validate automotive-grade reliability.
What is the clamping voltage of the 1.5SMC36AH at its rated peak pulse current?
The 1.5SMC36AH clamps to a maximum of 49.9 V at its rated peak impulse current (IPPM) of 31 A, defined per the 10/1000 µs waveform. This value ensures protected circuits - such as 3.3 V or 5 V microcontrollers - remain within safe operating limits during high-energy transients, provided board layout minimizes parasitic inductance.
Does the 1.5SMC36AH have polarity marking, and how is it identified?
Yes, the 1.5SMC36AH uses a cathode band marking on the DO-214AB package to indicate polarity. As a unidirectional TVS, the banded end is the cathode and must be connected to the line being protected (e.g., 24 V rail), while the anode connects to ground. This orientation is essential for correct clamping behavior and is consistent with standard diode marking conventions.
What packaging and moisture sensitivity level does the 1.5SMC36AH have?
1.5SMC36AH is supplied in DO-214AB (SMC) packages on 3,000-piece tape-and-reel format and is rated at Moisture Sensitivity Level 1 per J-STD-020 - meaning it can be mounted directly after removal from sealed packaging without baking, simplifying SMT line integration and reducing process risk in high-volume manufacturing.
1.5SMC36AH 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 31A
- 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)
1.5SMC36AH FAQ
1.How can I place an order for 1.5SMC36AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36AH 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 1.5SMC36AH reliable?
The price and inventory of 1.5SMC36AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36AH is usually 5 days.
3.What payment methods are accepted for 1.5SMC36AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36AH?
1.5SMC36AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36AH 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 1.5SMC36AH?
For technical support, including 1.5SMC36AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36AH requirements.
6.How does Aetrix verify that 1.5SMC36AH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36AH 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 1.5SMC36AH meets industry standards.
7.What is the process for return or replacement of 1.5SMC36AH?
All 1.5SMC36AH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36AH, 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 1.5SMC36AH part is unused and in its original packaging.
Return procedure for 1.5SMC36AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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