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Vishay General Semiconductor - Diodes Division 1.5SMC36AHM3_A/H
- Part No.:
- 1.5SMC36AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36AHM3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,104
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Product details
Overview
1.5SMC36AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 36 V breakdown voltage (VBR = 34.2–37.8 V at 1 mA), 30.8 V stand-off voltage (VWM), clamps to ≤49.9 V at 30.1 A peak pulse current (10/1000 µs), and delivers 1500 W peak pulse power. It is used in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the 1.5SMC36AHM3_A/H datasheet, 1.5SMC36AHM3_A/H pinout, 1.5SMC36AHM3_A/H application, or 1.5SMC36AHM3_A/H equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification status, clamping voltage margin relative to protected IC VCC, and thermal derating above 25 °C ambient.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 30.8 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response (<1.0 ns).
Designed for 10/1000 µs waveform compliance, it sustains 30.1 A peak pulse current with ≤49.9 V clamping voltage and exhibits 0.099 %/°C temperature coefficient of VBR. It meets J-STD-020 MSL Level 1 (260 °C reflow peak) and supports automated SMT placement on standard 0.31" × 0.31" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines precise triggering threshold for overvoltage events |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | ≤49.9 V at 30.1 A - clamping voltage limiting stress on downstream components during surge |
| PPPM | 1500 W - peak pulse power handling capability per 10/1000 µs waveform |
| IPPM | 30.1 A - maximum non-repetitive surge current the device safely diverts |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or low-side reference in unidirectional TVS configuration |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 36 V rail or signal trace); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables protection against severe transients like ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics including engine control units, ADAS sensors, and body controllers |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD or inductive switching spikes) |
| MSL Level 1, 260 °C peak reflow | Supports lead-free reflow assembly without popcorn or delamination risk |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 36 V supply rails in vehicle infotainment head units against load dump surges up to 60 V. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between rail and chassis ground to clamp transients within safe margin of downstream DC/DC converter input rating. Use Value: Limits clamped voltage to ≤49.9 V, preserving 50 V-rated input capacitors and preventing regulator latch-up or damage. |
Use Scenario: Safeguarding analog outputs of pressure sensors in factory automation PLC modules exposed to relay coil flyback. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector interface to absorb <100 ns rise-time inductive spikes before reaching ADC front-end. Use Value: Fast response (<1 ns) and 30.1 A surge capacity prevent sensor output saturation and maintain measurement integrity during switching events. |
| Telecom DC Power Input Protection | Consumer Device USB Power Path Protection |
Use Scenario: Guarding 36 V PoE++ midspan injector outputs against lightning-induced surges on outdoor Ethernet links. IC Role / Device Role / Timing Role: Primary-level TVS on DC output stage, coordinated with secondary GDT or MOV for staged energy absorption. Use Value: 1500 W rating handles multi-kA induced currents while maintaining VC below 50 V to avoid violating IEEE 802.3bt Class 8 voltage limits. |
Use Scenario: Adding overvoltage resilience to USB-C PD power delivery paths in portable medical monitors accepting 36 V auxiliary input. IC Role / Device Role / Timing Role: Unidirectional TVS placed upstream of buck converter to block reverse polarity faults and clamp hot-swap transients. Use Value: 30.8 V VWM allows full 36 V nominal operation while clamping to 49.9 V-well below 60 V absolute maximum ratings of common PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Same VWM/VBR/VC specs but lower PPPM (400 W), SMA package (smaller footprint, higher RθJA) | Not AEC-Q101 qualified; suited for cost-sensitive consumer designs with lower surge exposure | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5KE36A | Through-hole DO-201 package; identical electrical specs but slower thermal response and no MSL rating | Used in legacy industrial power supplies where wave soldering remains standard | Choose only for through-hole assembly or where SMT reflow compatibility is not required |
Compared with SMAJ36A-E3/57T and 1.5KE36A, the 1.5SMC36AHM3_A/H provides higher surge robustness (1500 W vs. 400 W or 1500 W with inferior thermal management), AEC-Q101 validation for automotive use, and SMT-ready MSL Level 1 compliance-making it optimal for new high-reliability embedded designs.
Availability
1.5SMC36AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power input protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge immunity.
Supply support for 1.5SMC36AHM3_A/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS solutions for harsh-environment applications-particularly automotive subsystems and industrial controls needing repeatable clamping performance and AEC-Q101 validation.
FAQ
What does the "HM3" suffix indicate in 1.5SMC36AHM3_A/H?
The "HM3" suffix in 1.5SMC36AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms the device meets automotive reliability standards-including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD) testing-while using environmentally compliant materials. This makes 1.5SMC36AHM3_A/H suitable for safety-critical automotive modules such as body control units and ADAS sensor interfaces.
How does the clamping voltage of 1.5SMC36AHM3_A/H compare to its breakdown voltage?
The 1.5SMC36AHM3_A/H has a breakdown voltage (VBR) range of 34.2–37.8 V at 1 mA test current, while its maximum clamping voltage (VC) is 49.9 V at 30.1 A peak pulse current. This 12.1–15.7 V differential represents the dynamic voltage rise under surge conditions and must be verified against the absolute maximum ratings of protected components-e.g., ensuring VC stays below the 50 V input limit of a downstream DC/DC controller. The 1.5SMC36AHM3_A/H's low incremental resistance enables tight clamping control.
Can 1.5SMC36AHM3_A/H be used in bidirectional configurations?
No, 1.5SMC36AHM3_A/H is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., 1.5SMC36CA). Using 1.5SMC36AHM3_A/H in a bidirectional application would result in forward conduction during negative transients, potentially causing failure. For AC-coupled or symmetrical surge protection, select the explicitly rated bidirectional part-never substitute unidirectional devices without circuit redesign.
What is the thermal resistance profile of 1.5SMC36AHM3_A/H, and how does it affect layout?
The 1.5SMC36AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads (RθJL) of 15 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe operation at elevated ambient temperatures, PCB layout must provide adequate copper area and minimize trace length to ground. Derating begins above 25 °C ambient-e.g., at 85 °C, maximum allowable power drops to ~3.5 W. Proper thermal design ensures 1.5SMC36AHM3_A/H sustains repeated surge events without thermal runaway.
Is 1.5SMC36AHM3_A/H compatible with lead-free reflow processes?
Yes, 1.5SMC36AHM3_A/H is rated for MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, fully compatible with standard lead-free soldering profiles. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements, and the molding compound complies with UL 94 V-0 flammability rating. No pre-baking is required, and the device withstands multiple reflow cycles-ensuring robust manufacturability in high-volume SMT lines deploying 1.5SMC36AHM3_A/H.
1.5SMC36AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- 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):
- 30.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC36AHM3_A/H FAQ
1.How can I place an order for 1.5SMC36AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36AHM3_A/H 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 1.5SMC36AHM3_A/H reliable?
The price and inventory of 1.5SMC36AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC36AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36AHM3_A/H?
1.5SMC36AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36AHM3_A/H 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 1.5SMC36AHM3_A/H?
For technical support, including 1.5SMC36AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36AHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC36AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36AHM3_A/H 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 1.5SMC36AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC36AHM3_A/H?
All 1.5SMC36AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36AHM3_A/H, 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 1.5SMC36AHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC36AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36AHM3_A/H Tags
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