My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC30CAHM3_A/H
- Part No.:
- 1.5SMC30CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30CAHM3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,748
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC30CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 36.2 A peak pulse current (IPPM), and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O lines, and telecom signal conditioning circuits.
For engineers reviewing the 1.5SMC30CAHM3_A/H datasheet, 1.5SMC30CAHM3_A/H pinout, 1.5SMC30CAHM3_A/H application, or 1.5SMC30CAHM3_A/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT assembly on standard PCB pad layouts per JEDEC DO-214AB footprint.
Technical Context
This device operates as a voltage-clamped surge protector: during transient events exceeding its reverse standoff voltage (VWM = 30 V), it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM).
The 1.5SMC30CAHM3_A/H delivers repeatable 1500 W surge handling under 0.01% duty cycle conditions, with fast response time (<1.0 ns) and low incremental surge resistance - critical for safeguarding MOSFET gates, microcontroller I/O pins, and analog sensor front-ends against ESD, lightning-induced surges, and inductive switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown. |
| VBR (Breakdown) | 33.3–37.1 V at 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping) | 41.4 V at IPPM = 36.2 A - Peak voltage seen by protected circuit under full-rated 10/1000 μs surge; enables safe IC-level protection. |
| PPPM | 1500 W - Surge energy absorption capacity with standardized 10/1000 μs waveform; supports high-energy transient suppression. |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated pick-and-place and reflow. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC specification. |
| Thermal Resistance | RθJA = 75 °C/W - Junction-to-ambient thermal performance on standard 8.0 mm × 8.0 mm copper pads; informs derating above 25 °C ambient. |
Pinout & Package
Package: SMC (DO-214AB) - molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow), compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | One side of symmetrical bidirectional junction; no polarity marking required on device body. |
| Cathode | Terminal K | Other side of symmetrical bidirectional junction; functionally identical to Anode under reverse bias - no cathode band present. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both polarities - eliminates need for orientation-aware placement in AC-coupled or differential signal paths. |
| 1500 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 5a) without degradation when mounted per recommended 8.0 mm × 8.0 mm copper pads. |
| Glass passivated junction | Ensures stable leakage current (<1.0 μA at VWM) and long-term parameter consistency across temperature and life cycles. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensor interfaces, and infotainment power rails. |
| Low profile SMC package | Height ≤ 2.62 mm - enables compact layout in space-constrained modules such as telematics units and battery management systems. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching transceiver ICs. Use Value: Maintains signal integrity under ISO 16750-2 load dump (12 V system: +120 V/100 ms) and IEC 61000-4-2 ESD (±15 kV air) without latch-up or parametric shift. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers exposed to motor drive noise and field wiring surges. IC Role / Device Role / Timing Role: Primary transient suppressor on 24 V DC I/O lines, placed upstream of optocouplers or level-shifting buffers. Use Value: Limits transient voltage to <42 V during 1 kV/500 A ring wave (IEC 61000-4-12) - preserving isolation barrier integrity and preventing false triggering. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from induced lightning surges on outdoor-facing ports. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), clamping residual transients to safe levels for PHY ICs. Use Value: Achieves <42 V clamping at 36 A allows use with 3.3 V or 5 V tolerant PHYs while meeting GR-1089-CORE Level 3 surge immunity requirements. |
Use Scenario: Preventing overvoltage damage to downstream USB-PD controllers and load switches during adapter output short-circuit recovery. IC Role / Device Role / Timing Role: Output-side TVS on 5–20 V DC power rails to absorb inductive kickback from internal FET switching. Use Value: Fast <1 ns response and 41.4 V clamping prevent latch-up in silicon-based load switches rated for 30 V max input - extending product lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA = 85 °C/W) | Preferred for space-constrained consumer designs where surge energy is limited to IEC 61000-4-5 Level 3 (0.5 kV) | Select SMBJ30CA only if board area is critical and peak surge energy remains ≤600 W; verify thermal margin at elevated ambient. |
| 1.5KE30CA | Higher RθJA (100 °C/W), axial-leaded DO-15 package, same electrical specs but not SMT-compatible | Suitable for prototyping or through-hole legacy systems; incompatible with automated SMT production | Choose 1.5KE30CA only for hand-soldered evaluation or repair; not recommended for volume manufacturing or AEC-Q101 compliance needs. |
Compared with SMBJ30CA and 1.5KE30CA, the 1.5SMC30CAHM3_A/H uniquely balances 1500 W surge capacity, AEC-Q101 qualification, and SMC package manufacturability - making it the preferred choice for automotive and industrial SMT production requiring validated reliability and high-energy immunity.
Availability
1.5SMC30CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom line interface applications requiring stable component supply, AEC-Q101 traceability, and consistent SMC (DO-214AB) packaging.
Supply support for 1.5SMC30CAHM3_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, efficiency, and application-specific optimization.
The 1.5SMC Series was developed to deliver high-power, surface-mount transient suppression for automotive, industrial, and communications systems - combining AEC-Q101 qualification, industry-standard SMC packaging, and precise bidirectional clamping performance.
FAQ
What does the "HM3" suffix indicate in 1.5SMC30CAHM3_A/H?
The "HM3" suffix in 1.5SMC30CAHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with JESD 201 Class 2 whisker resistance, matte tin plating, and UL 94 V-0 molding compound - essential for automotive and high-reliability industrial use.
Is 1.5SMC30CAHM3_A/H suitable for protecting RS-485 communication lines?
Yes, 1.5SMC30CAHM3_A/H is well-suited for RS-485 line protection due to its bidirectional clamping, 41.4 V clamping voltage at 36.2 A, and fast response time. When placed across differential pairs (A–B) or individually on A/GND and B/GND, it suppresses ESD and surge events while maintaining signal integrity up to 20 Mbps.
How does the 1.5SMC30CAHM3_A/H perform at elevated ambient temperatures?
The 1.5SMC30CAHM3_A/H follows standard derating curves: its peak pulse power drops linearly above 25 °C ambient, reaching ~750 W at 85 °C and ~300 W at 125 °C (per Fig. 2). Designers must apply thermal derating using RθJA = 75 °C/W and ensure adequate copper pour to maintain safe junction temperature during repetitive surges.
Does 1.5SMC30CAHM3_A/H have a marked polarity band on the package?
No, the 1.5SMC30CAHM3_A/H is a bidirectional TVS diode and carries no polarity marking. Unlike unidirectional variants (e.g., 1.5SMC30AHM3_A/H), it lacks a cathode band because both terminals function identically under reverse bias - simplifying PCB layout and eliminating orientation errors during assembly.
What is the maximum reverse leakage current for 1.5SMC30CAHM3_A/H at 30 V?
The maximum reverse leakage current (ID) for 1.5SMC30CAHM3_A/H is 1.0 μA at VWM = 30 V and TA = 25 °C. This low leakage ensures minimal power loss in standby mode and prevents unintended loading of high-impedance sensor or reference circuits it protects.
1.5SMC30CAHM3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- 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)
1.5SMC30CAHM3_A/H FAQ
1.How can I place an order for 1.5SMC30CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30CAHM3_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 1.5SMC30CAHM3_A/H reliable?
The price and inventory of 1.5SMC30CAHM3_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 1.5SMC30CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC30CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30CAHM3_A/H?
1.5SMC30CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30CAHM3_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 1.5SMC30CAHM3_A/H?
For technical support, including 1.5SMC30CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC30CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30CAHM3_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 1.5SMC30CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC30CAHM3_A/H?
All 1.5SMC30CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30CAHM3_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 1.5SMC30CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC30CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30CAHM3_A/H 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
