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Vishay General Semiconductor - Diodes Division SMA5J16CAHM3/H
- Part No.:
- SMA5J16CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J16CAHM3/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,721
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Product details
Overview
SMA5J16CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR at 1 mA), 500 W peak pulse power (10/1000 µs), clamping voltage of 26.0 V at 19.2 A, and operates from −55 °C to +150 °C - used in automotive sensor interface protection and industrial I/O line hardening.
For engineers reviewing the SMA5J16CAHM3/H datasheet, SMA5J16CAHM3/H pinout, SMA5J16CAHM3/H application, or SMA5J16CAHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, bidirectional clamping behavior, thermal resistance (RθJA = 80 °C/W), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This device is a silicon avalanche diode engineered for unidirectional or bidirectional transient suppression using a glass-passivated junction. Its low incremental surge resistance and fast response time (<1 ns) enable effective clamping of ESD, lightning-induced surges, and inductive switching transients without latch-up or degradation under repetitive stress.
Rated for 500 W peak pulse power with 10/1000 µs waveform, it delivers 26.0 V clamping at 19.2 A IPPM while maintaining <1 µA reverse leakage at 16 V. The SMA (DO-214AC) package supports automated placement and meets MSL Level 1 (260 °C reflow peak), with halogen-free, RoHS-compliant construction certified to AEC-Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 17.8 V / 19.7 V at 1 mA - guaranteed avalanche initiation range; ensures consistent turn-on across temperature and unit variation. |
| VC @ IPPM | 26.0 V at 19.2 A - clamped voltage during 500 W surge; limits downstream IC stress below 26 V under worst-case transient. |
| PPPM | 500 W - peak pulse power handling capability with 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| TJ max | +150 °C - maximum junction temperature; enables reliable operation in under-hood automotive and industrial environments. |
| RθJA | 80 °C/W - thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs board-level thermal design for sustained surge duty. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102, MSL Level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bidirectional terminals - identical electrical behavior in both directions; no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - suitable for engine control, ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets JESD201 Class 2 whisker resistance and global environmental compliance - supports green manufacturing and export requirements. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving protection margin for sensitive analog front-ends. |
| Fast response time (<1 ns) | Clamps before system-level protection devices (e.g., fuses, MOVs) react - essential for safeguarding high-speed digital interfaces and precision sensors. |
Applications
| Automotive Sensor Protection | Industrial I/O Line Hardening |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains 16 V stand-off while clamping to 26.0 V - preserves signal integrity for 12 V supply-referenced sensors and avoids false triggering of overvoltage detectors. |
Use Scenario: Safeguarding PLC analog input modules and digital fieldbus interfaces (RS-485, Profibus) against EFT and surge events in factory automation. IC Role / Device Role / Timing Role: Primary transient suppressor on signal/power rails, coordinated with upstream GDT or MOV for multi-stage protection architecture. Use Value: 500 W rating and 80 °C/W RθJA allow sustained operation under repeated 1 kV/500 A surges per IEC 61000-4-5, reducing field failure rates. |
| Consumer Power Adapter Input | Telecom DC Power Feeds |
Use Scenario: Secondary-side surge protection on 5–24 V DC outputs of wall adapters and USB PD chargers exposed to user-handling transients. IC Role / Device Role / Timing Role: Fast-acting clamp between VOUT and GND to prevent overvoltage damage to downstream USB controllers or PMICs. Use Value: 1 µA leakage at 16 V prevents standby current degradation; bidirectional symmetry eliminates orientation errors during SMT assembly. |
Use Scenario: Protection of -48 V telecom power distribution boards against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Standoff-rated TVS on primary DC feed rail, selected for precise 16 V threshold to coordinate with upstream crowbar circuits. Use Value: Guaranteed VBR range (17.8–19.7 V) ensures deterministic clamping onset without premature conduction during normal -48 V ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J16CAHE3/H | Same electrical specs, RoHS-compliant but not halogen-free; uses matte tin plating per J-STD-002 without JESD201 Class 2 whisker certification. | Approved for commercial-grade automotive and industrial use where halogen-free requirement is not mandated. | Select SMA5J16CAHE3/H when cost sensitivity outweighs halogen-free compliance or whisker resistance requirements. |
| SMCJ16CAHM3 | Same VWM/VC, but higher PPPM = 1500 W in larger SMC (DO-214AB) package; RθJA = 35 °C/W vs. 80 °C/W. | Used where higher single-pulse energy absorption is needed, e.g., main power rail protection in motor drives. | Choose SMCJ16CAHM3 only if board layout allows larger footprint and thermal management supports lower RθJA. |
Compared with SMA5J16CAHE3/H and SMCJ16CAHM3, the SMA5J16CAHM3/H uniquely balances AEC-Q101 qualification, halogen-free compliance, and compact SMA footprint - making it optimal for space-constrained, high-reliability automotive and industrial edge nodes requiring traceable, whisker-resistant construction.
Availability
SMA5J16CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O modules, and telecom DC power feeds requiring stable component supply, long-term lifecycle support, and AEC-Q101 validated performance.
Supply support for SMA5J16CAHM3/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 TVS devices with emphasis on reliability, power density, and automotive qualification.
The SMA5JxxCA family is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - particularly targeting AEC-Q101-compliant automotive subsystems and ruggedized industrial electronics.
FAQ
What does the "HM3" suffix indicate in SMA5J16CAHM3/H?
The HM3 suffix in SMA5J16CAHM3/H denotes halogen-free, RoHS-compliant construction with matte tin-plated leads qualified to JESD201 Class 2 for whisker resistance. It also confirms AEC-Q101 qualification per Vishay's automotive-grade product line. This distinguishes SMA5J16CAHM3/H from non-halogen-free variants like SMA5J16CAHE3/H and ensures compliance with strict environmental and reliability standards for automotive and industrial deployments.
Is SMA5J16CAHM3/H bidirectional, and how is polarity identified?
Yes, SMA5J16CAHM3/H is a bidirectional TVS diode - its electrical characteristics apply identically in both directions, with no cathode marking on the SMA (DO-214AC) package body. Unlike unidirectional versions (e.g., SMA5J16A), it lacks a band indicator because conduction occurs symmetrically across both terminals, enabling simplified PCB layout and eliminating orientation-dependent assembly errors.
What is the clamping voltage of SMA5J16CAHM3/H, and under what test condition is it specified?
The clamping voltage of SMA5J16CAHM3/H is 26.0 V, measured at a peak pulse current (IPPM) of 19.2 A using the standardized 10/1000 µs double-exponential surge waveform. This value reflects the maximum voltage seen across the device during a 500 W transient event and is critical for ensuring downstream components remain within their absolute maximum ratings during surge conditions.
Does SMA5J16CAHM3/H meet automotive qualification standards?
Yes, SMA5J16CAHM3/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code structure (HM3 suffix) and documentation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev D, making it suitable for under-hood and chassis-mounted automotive applications such as body control modules and sensor signal conditioning.
How does the thermal resistance of SMA5J16CAHM3/H affect PCB layout?
SMA5J16CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures during repetitive surges, designers must provide adequate copper area and avoid excessive trace length or isolation - insufficient copper will elevate TJ beyond the +150 °C maximum, risking parametric shift or failure.
SMA5J16CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 19.2A
- 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)
SMA5J16CAHM3/H FAQ
1.How can I place an order for SMA5J16CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J16CAHM3/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 SMA5J16CAHM3/H reliable?
The price and inventory of SMA5J16CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J16CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J16CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J16CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J16CAHM3/H?
SMA5J16CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J16CAHM3/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 SMA5J16CAHM3/H?
For technical support, including SMA5J16CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J16CAHM3/H requirements.
6.How does Aetrix verify that SMA5J16CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J16CAHM3/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 SMA5J16CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J16CAHM3/H?
All SMA5J16CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J16CAHM3/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 SMA5J16CAHM3/H part is unused and in its original packaging.
Return procedure for SMA5J16CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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