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Vishay General Semiconductor - Diodes Division SMA5J15CAHM3_A/I
- Part No.:
- SMA5J15CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15CAHM3_A/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,156
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Product details
Overview
SMA5J15CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), 20.5 A peak pulse current (IPPM), and clamps to ≤24.4 V at rated surge - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J15CAHM3_A/I datasheet, SMA5J15CAHM3_A/I pinout, SMA5J15CAHM3_A/I application, or SMA5J15CAHM3_A/I equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical reverse/forward conduction enabling bidirectional transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 μA at VWM).
Thermal performance is defined by RθJA = 80 °C/W and RθJL = 25 °C/W, supporting reliable operation under repetitive surges when mounted per recommended pad layout. The 10/1000 μs waveform rating reflects standardized lightning/surge immunity testing per ANSI/IEEE C62.35.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V at 1 mA - guaranteed avalanche initiation range for predictable turn-on |
| VC @ IPPM | ≤24.4 V at 20.5 A - clamped voltage during 500 W surge, defining protected circuit stress level |
| PPPM | 500 W (10/1000 μs) - energy-handling capacity for IEC 61000-4-5 Level 4 compliance |
| TJ max | +150 °C - enables use in under-hood automotive environments and industrial enclosures |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with standard reflow profiles (MSL Level 1, 260 °C peak) |
| Qualification | AEC-Q101 qualified (HM3 suffix) - validated for automotive electronics reliability per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output - no cathode band; identical clamping in both directions |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides thermal conduction path to PCB copper pads (5.0 mm × 5.0 mm minimum) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or differential signals without polarity constraints |
| AEC-Q101 qualification (HM3) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU, China RoHS, and JGPSSI standards |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for downstream ICs |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow processing without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Clamps 500 W transients to ≤24.4 V while maintaining <1.0 μA leakage at 15 V, preserving sensor accuracy and MCU input integrity. |
Use Scenario: Safeguarding digital input modules against field-wiring induced surges and electrostatic discharge in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional transient suppressor across 24 V DC input terminals to absorb inductive kickback from solenoid/relay coils. Use Value: Withstands repeated 10/1000 μs surges up to 20.5 A without degradation, ensuring long-term reliability in unattended industrial deployments. |
| Telecom Power Line Protection | Consumer Appliance Motor Control |
Use Scenario: Secondary-side overvoltage protection on 12–48 V telecom power rails exposed to lightning-induced surges via Ethernet or PoE interfaces. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamping device placed adjacent to DC-DC converter inputs to prevent overvoltage latch-up. Use Value: 24.4 V clamping voltage ensures downstream regulators remain within absolute maximum ratings during 500 W surge events. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in white goods (e.g., washing machine drum drives, HVAC blowers). IC Role / Device Role / Timing Role: Bidirectional TVS across motor terminals to clamp reverse EMF during PWM switching transitions. Use Value: Symmetrical clamping eliminates need for dual unidirectional devices, reducing BOM count and PCB area in cost-sensitive appliance designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J15CAHE3_A/I | Same electrical specs; RoHS-compliant but not halogen-free; AEC-Q101 qualified (HE3 suffix) | Acceptable for non-automotive industrial use where halogen-free requirement is waived | Select HE3 if halogen content is not restricted; HM3 required for full automotive material compliance |
| SMA6J15CAHM3_A/I | 600 W PPPM rating (vs. 500 W); same VWM/VBR/VC; identical package and qualification | Preferred for higher-energy surge environments (e.g., outdoor telecom, heavy industrial) | Choose SMA6J15CAHM3_A/I when system-level surge testing exceeds IEC 61000-4-5 Level 4 |
Compared with SMA5J15CAHM3_A/I, the HE3 variant trades halogen-free status for broader commercial availability, while the SMA6J15CAHM3_A/I offers +20 % surge power headroom with no layout or qualification change - enabling scalable protection across product families.
Availability
SMA5J15CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power supplies, and consumer appliance motor control circuits requiring stable component supply and AEC-Q101 assurance.
Supply support for SMA5J15CAHM3_A/I 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 high-reliability and automotive-grade solutions.
The SMA5JxxCA family delivers high-power-density TVS protection optimized for space-constrained, high-surge industrial and automotive applications - combining AEC-Q101 qualification, halogen-free construction, and industry-standard DO-214AC packaging.
FAQ
What does the "HM3" suffix indicate in SMA5J15CAHM3_A/I?
The HM3 suffix in SMA5J15CAHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive reliability standards and environmental regulations including JGPSSI and China RoHS, distinguishing it from commercial-grade E3/M3 variants and non-halogen-free HE3 versions.
Is SMA5J15CAHM3_A/I suitable for protecting CAN bus lines?
Yes, SMA5J15CAHM3_A/I is suitable for CAN bus protection due to its 15 V stand-off voltage matching typical 12 V automotive supply rails, bidirectional clamping behavior, and fast response time. Its ≤24.4 V clamping voltage ensures CAN transceivers (e.g., TJA1042, SN65HVD230) remain within safe operating limits during ISO 7637-2 pulse tests.
What is the maximum allowable junction temperature for SMA5J15CAHM3_A/I?
The maximum junction temperature for SMA5J15CAHM3_A/I is +150 °C, as specified in the Vishay datasheet. This rating supports operation in under-hood automotive environments and enclosed industrial controllers, provided thermal design meets the RθJA = 80 °C/W derating curve and uses the recommended 5.0 mm × 5.0 mm copper pad layout per terminal.
Does SMA5J15CAHM3_A/I have polarity markings on the package?
No, SMA5J15CAHM3_A/I has no polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMA5J15A), the SMA5J15CAHM3_A/I device functions identically in both directions - eliminating the need for cathode band identification and simplifying PCB layout and assembly.
How does the clamping voltage of SMA5J15CAHM3_A/I compare to its breakdown voltage?
SMA5J15CAHM3_A/I has a breakdown voltage range of 16.7–18.5 V at 1 mA and clamps to ≤24.4 V at its rated 20.5 A peak pulse current. This ~30 % voltage rise above VBR reflects the device's dynamic impedance under surge conditions and defines the maximum stress imposed on protected circuitry during transient events.
SMA5J15CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 20.5A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J15CAHM3_A/I FAQ
1.How can I place an order for SMA5J15CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15CAHM3_A/I 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 SMA5J15CAHM3_A/I reliable?
The price and inventory of SMA5J15CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J15CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J15CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15CAHM3_A/I?
SMA5J15CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15CAHM3_A/I 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 SMA5J15CAHM3_A/I?
For technical support, including SMA5J15CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15CAHM3_A/I requirements.
6.How does Aetrix verify that SMA5J15CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J15CAHM3_A/I 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 SMA5J15CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J15CAHM3_A/I?
All SMA5J15CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15CAHM3_A/I, 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 SMA5J15CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMA5J15CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J15CAHM3_A/I Tags
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