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Vishay General Semiconductor - Diodes Division TPSMB22AHM3_A/H
- Part No.:
- TPSMB22AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB22AHM3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,065
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Product details
Overview
TPSMB22AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1 mA), 18.8 V stand-off voltage (VWM), 30.6 V maximum clamping voltage (VC) at 19.6 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB22AHM3_A/H datasheet, TPSMB22AHM3_A/H pinout, TPSMB22AHM3_A/H application, or TPSMB22AHM3_A/H equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and verified clamping performance under repetitive 10/1000 µs surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional structure provides asymmetric conduction: reverse-biased clamping during overvoltage events and forward conduction only above ~3.5 V at 50 A.
The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and exhibits a positive temperature coefficient of breakdown voltage (+0.084 %/°C), enabling predictable derating above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V at IT = 1 mA - defines precise reverse avalanche onset for reliable clamping threshold setting |
| VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage seen by protected IC during full 600 W surge event |
| PPPM | 600 W (10/1000 µs waveform) - peak transient energy absorption capability under standardized surge test |
| TJ max. | +185 °C - enables operation in under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - cathode-band marked; blocks forward current until ~3.5 V, clamps reverse surges only |
| MSL Level | Level 1 (J-STD-020) - supports standard SMT reflow without moisture sensitivity concerns |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connects to lower-potential side of protected circuit; conducts during forward surge or bias |
| Cathode | Reverse clamping terminal | Marked with band; connects to higher-potential rail; avalanches to clamp reverse transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements without compromising surge performance |
| 185 °C junction rating | Enables placement near heat sources (e.g., power converters) without thermal derating penalties |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs |
| Fast response time (< 1 ps) | Clamps sub-nanosecond ESD or switching spikes before sensitive nodes experience overstress |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges >30 V while maintaining low leakage at 13.5 V nominal. Use Value: Withstands 600 W pulses and operates reliably at +185 °C, meeting AEC-Q101 requirements for engine compartment use. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loop) of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to shunt transients before reaching precision amplifier inputs. Use Value: 30.6 V clamping voltage ensures protected ICs remain below absolute maximum ratings even during 19.6 A surges. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feed Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side controllers and MOSFETs from line surges (IEC 61000-4-5 Level 3). IC Role / Device Role / Timing Role: Mounted across bulk capacitor input to clamp differential-mode transients before they propagate into SMPS controller. Use Value: 600 W rating and 10/1000 µs waveform compliance ensure robustness against standardized surge tests. | Use Scenario: Protecting PoE (Power over Ethernet) midspan injectors and PSE controllers from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and DC− to clamp common-mode surges coupled onto data/power pairs. Use Value: Halogen-free HM3 construction supports telecom environmental standards while delivering 30.6 V clamping at full rated current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same SMB package, 22 V VBR, but rated for 600 W with 10/1000 µs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| TPSMB22AHE3_A/H | Identical electrical specs and SMB package, but uses HE3 suffix (RoHS-compliant, AEC-Q101 qualified, not halogen-free) | Same automotive qualification level, but different material compliance profile | Choose HE3 if halogen content is unrestricted; choose HM3 if halogen-free mandate applies |
Compared with SMBJ22A and TPSMB22AHE3_A/H, the TPSMB22AHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free construction, and 185 °C operation - making it the only option fully compliant with stringent Tier-1 automotive and green electronics requirements.
Availability
TPSMB22AHM3_A/H is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, consumer power adapters, and telecom DC feed protection requiring stable component supply across extended temperature and regulatory environments.
Supply support for TPSMB22AHM3_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, TVS devices, and optoelectronics with emphasis on high-reliability and high-temperature performance.
The TPSMB series belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for robust transient suppression in automotive, industrial, and telecom systems where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the breakdown voltage tolerance of TPSMB22AHM3_A/H?
The TPSMB22AHM3_A/H has a specified breakdown voltage range of 20.9 V to 23.1 V at test current IT = 1 mA, corresponding to ±5% tolerance around the nominal 22 V rating. This tight VBR distribution ensures consistent clamping behavior across production lots and supports precise overvoltage protection design in safety-critical applications like automotive ECUs.
Is TPSMB22AHM3_A/H compatible with lead-free reflow processes?
Yes, TPSMB22AHM3_A/H is fully compatible with lead-free reflow soldering. It meets MSL Level 1 per J-STD-020 and supports a maximum peak reflow temperature of 260 °C. The matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, and the device passes JESD 201 Class 2 whisker testing - confirming long-term solder joint integrity in high-reliability assemblies.
Does TPSMB22AHM3_A/H support bidirectional transient suppression?
No, TPSMB22AHM3_A/H is strictly unidirectional. It clamps only reverse-biased transients (cathode-to-anode) and conducts forward current above ~3.5 V. For bidirectional protection, a separate device such as the SMBJ22CA or dual-diode configuration would be required. The unidirectional architecture of TPSMB22AHM3_A/H optimizes leakage and clamping performance for DC-biased rails.
What is the maximum clamping voltage of TPSMB22AHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of TPSMB22AHM3_A/H is 30.6 V at IPPM = 19.6 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value represents the peak voltage imposed on the protected circuit during full-rated 600 W transient events - critical for ensuring downstream ICs remain within their absolute maximum voltage ratings.
How does the temperature coefficient affect TPSMB22AHM3_A/H performance?
The TPSMB22AHM3_A/H has a positive temperature coefficient of breakdown voltage (αT = +0.084 %/°C), meaning VBR increases linearly with junction temperature. At +150 °C, VBR rises ~10.5% above its 25 °C value - enhancing margin against false triggering in high-temperature environments while maintaining predictable derating behavior per Vishay's published formula.
TPSMB22AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 19.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB22AHM3_A/H FAQ
1.How can I place an order for TPSMB22AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB22AHM3_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 TPSMB22AHM3_A/H reliable?
The price and inventory of TPSMB22AHM3_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 TPSMB22AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMB22AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB22AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB22AHM3_A/H?
TPSMB22AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB22AHM3_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 TPSMB22AHM3_A/H?
For technical support, including TPSMB22AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB22AHM3_A/H requirements.
6.How does Aetrix verify that TPSMB22AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB22AHM3_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 TPSMB22AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB22AHM3_A/H?
All TPSMB22AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB22AHM3_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 TPSMB22AHM3_A/H part is unused and in its original packaging.
Return procedure for TPSMB22AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB22AHM3_A/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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