My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ160AHM3/H
- Part No.:
- SMAJ160AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ160AHM3/H.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ160AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 160 V stand-off voltage (VWM), 178–197 V breakdown voltage (VBR) at 1 mA, 259 V maximum clamping voltage (VC) at 1.2 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the SMAJ160AHM3/H datasheet, SMAJ160AHM3/H pinout, SMAJ160AHM3/H application, or SMAJ160AHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance values, clamping performance under surge conditions, and direct alternatives for circuit protection design validation.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, activated when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), enabling suppression of ESD and inductive switching spikes before sensitive downstream components are damaged.
The device is rated for 150 °C maximum junction temperature and exhibits 120 °C/W junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads. Its halogen-free, RoHS-compliant HM3 suffix confirms compliance with JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 120–160 V DC bus lines. |
| VBR (min/max) | 178 V / 197 V at 1 mA - Confirmed breakdown range ensures reliable turn-on without premature conduction during normal operation. |
| VC @ IPPM | 259 V at 1.2 A - Clamping voltage under 10/1000 μs surge; limits transient energy delivered to protected ICs or MOSFETs. |
| PPPM | 400 W - Peak pulse power handling capability with 10/1000 μs waveform; supports repetitive surge events at 0.01% duty cycle. |
| ID @ VWM | ≤1.0 μA - Reverse leakage current at stand-off voltage; negligible power loss and no measurable loading on source circuits. |
| RθJA | 120 °C/W - Thermal resistance junction-to-ambient on standard PCB pad layout; informs derating requirements above 25 °C ambient. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, single-ended unidirectional configuration with cathode band marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode | Reverse voltage sensing / clamping node | Connected to protected line (e.g., 160 V rail or sensor input); conducts avalanche current when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 160 V systems without thermal runaway. |
| Halogen-free, RoHS-compliant HM3 suffix | Meets automotive and industrial environmental mandates while maintaining JESD201 Class 2 whisker resistance for long-term solder joint integrity. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive kick from solenoid drivers), improving clamping precision. |
| 150 °C max junction temperature | Supports operation in under-hood automotive environments and enclosed industrial enclosures without forced cooling. |
| MSL Level 1, 260 °C reflow compatible | Allows single-pass lead-free reflow assembly without pre-baking, reducing manufacturing complexity and cost. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load dump and alternator ripple in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between fused battery feed and LDO input. Use Value: Limits transient voltage to ≤259 V during 12 V system load dump (ISO 7637-2 Pulse 5a), preventing LDO overvoltage failure. |
Use Scenario: Shields 4–20 mA current-loop receiver inputs from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals upstream of signal conditioner IC. Use Value: Maintains <1.0 μA leakage at 24 V nominal, avoiding measurement error while clamping 1 kV EFT bursts per IEC 61000-4-4. |
| Telecom Power Supply DC Bus | Motor Drive Gate Driver Protection |
|
Use Scenario: Safeguards secondary-side 160 V DC bus in telecom rectifier modules exposed to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary-stage TVS mounted directly across bulk capacitor terminals. Use Value: Absorbs 400 W surge energy within 1000 μs, limiting bus overvoltage to 259 V and preserving electrolytic capacitor lifetime. |
Use Scenario: Prevents gate oxide damage in 600 V IGBTs caused by Miller-induced voltage spikes during high-dI/dt switching in HVAC inverters. IC Role / Device Role / Timing Role: Fast-response TVS placed between gate and emitter, referenced to isolated drive supply. Use Value: Sub-nanosecond response clamps gate-emitter voltage to <20 V, eliminating false turn-on and shoot-through risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ160AHE3/H | Same VWM/VBR/VC ratings; RoHS-compliant but not halogen-free; lacks JESD201 Class 2 whisker rating. | Approved for commercial and industrial use; not qualified for automotive under AEC-Q101. | Select when halogen-free requirement is absent and automotive qualification is unnecessary. |
| SMCJ160A-HM3 | Same VWM (160 V) but higher PPPM (1500 W); larger SMC (DO-214AB) package; RθJA = 35 °C/W. | Used where higher surge energy absorption is required (e.g., primary AC input stages); requires larger PCB footprint. | Choose for 1500 W surge immunity needs; verify board space and thermal pad layout compatibility. |
Compared with SMAJ160AHM3/H, SMAJ160AHE3/H omits halogen-free and whisker-resistant construction, while SMCJ160A-HM3 trades compact size for 3.75× higher surge power handling - making SMAJ160AHM3/H optimal for space-constrained, automotive-qualified 400 W protection.
Availability
SMAJ160AHM3/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial analog I/O modules, telecom DC power distribution, and motor drive gate protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMAJ160AHM3/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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with global manufacturing and test facilities focused on reliability and application-specific performance.
The SMAJ series targets cost-effective, surface-mount transient protection for automotive, industrial, and telecom systems - emphasizing AEC-Q101 qualification, low-profile packaging, and precise clamping across 5.0–188 V VWM range.
FAQ
What is the maximum clamping voltage of the SMAJ160AHM3/H under a 10/1000 μs surge?
The SMAJ160AHM3/H has a maximum clamping voltage (VC) of 259 V at 1.2 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMAJ160AHM3/H maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMAJ160AHM3/H qualified for automotive applications?
Yes, SMAJ160AHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88390 (Revision 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, validating its suitability for under-hood and chassis-mounted automotive electronics. The SMAJ160AHM3/H meets all requirements for use in body control modules and power distribution units.
What does the 'HM3' suffix indicate for SMAJ160AHM3/H?
The 'HM3' suffix in SMAJ160AHM3/H denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity rating. It also signifies AEC-Q101 qualification. This distinguishes it from 'E3' (RoHS only) and 'HE3' (AEC-Q101 + RoHS) variants. The SMAJ160AHM3/H is therefore specified for high-reliability, environmentally regulated applications including automotive and industrial equipment.
How does SMAJ160AHM3/H compare to SMAJ160AHE3/H in terms of reliability?
SMAJ160AHM3/H provides superior long-term reliability versus SMAJ160AHE3/H due to its halogen-free molding compound and JESD201 Class 2 whisker resistance - critical for solder joint integrity in thermally cycled automotive environments. While both share identical electrical specs (VWM = 160 V, VC = 259 V), only SMAJ160AHM3/H is AEC-Q101 qualified and certified for extended life under mechanical and thermal stress. The SMAJ160AHM3/H is the preferred choice where field failure risk must be minimized.
What is the thermal resistance of SMAJ160AHM3/H, and how does it affect PCB layout?
SMAJ160AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB with no internal planes. To maintain TJ ≤ 150 °C at full 400 W surge, designers must ensure adequate copper area and avoid excessive ambient temperature rise. The SMAJ160AHM3/H thermal performance is optimized for compact layouts but requires adherence to Vishay's recommended pad dimensions to achieve rated derating.
SMAJ160AHM3/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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- Power - Peak Pulse:
- 400W
- 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)
SMAJ160AHM3/H FAQ
1.How can I place an order for SMAJ160AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ160AHM3/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 SMAJ160AHM3/H reliable?
The price and inventory of SMAJ160AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ160AHM3/H is usually 5 days.
3.What payment methods are accepted for SMAJ160AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ160AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ160AHM3/H?
SMAJ160AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ160AHM3/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 SMAJ160AHM3/H?
For technical support, including SMAJ160AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ160AHM3/H requirements.
6.How does Aetrix verify that SMAJ160AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMAJ160AHM3/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 SMAJ160AHM3/H meets industry standards.
7.What is the process for return or replacement of SMAJ160AHM3/H?
All SMAJ160AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ160AHM3/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 SMAJ160AHM3/H part is unused and in its original packaging.
Return procedure for SMAJ160AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ160AHM3/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 …
