My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA22AHM3_B/H
- Part No.:
- TPSMA22AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA22AHM3_B/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,277
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA22AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching and lightning-induced transients on power rails and signal lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V), 400 W peak pulse power (10/1000 µs), 30.6 V maximum clamping voltage at 13.1 A, 185 °C junction temperature rating, and SMA (DO-214AC) package - used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TPSMA22AHM3_B/H datasheet, TPSMA22AHM3_B/H pinout, TPSMA22AHM3_B/H application, or TPSMA22AHM3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, TJ = 185 °C capability, 1.0 W steady-state power dissipation, and compliance with MSL level 1 reflow requirements.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs waveform with 0.01 % duty cycle, and it delivers consistent performance across -65 °C to +185 °C operating junction temperature range.
The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 1.0 µA max reverse leakage at 18.8 V stand-off voltage, and maintains stable VBR with a temperature coefficient of +0.084 %/°C - enabling predictable overvoltage protection in thermally demanding automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 V / 22.0 V / 23.1 V - defines precise voltage threshold at which clamping initiates under 1 mA test current |
| VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 30.6 V - clamped voltage during 400 W transient, limiting downstream IC stress to safe levels |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform, supporting robust ESD/lightning immunity |
| TJ max. | +185 °C - enables operation in engine bay, powertrain, and high-ambient industrial enclosures |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes polarity |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and MSL Level 1 rating |
Pinout & Package
SMA (DO-214AC) package with molded epoxy body, matte tin-plated leads, and cathode band marking. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC standard layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Junction passivation | Reduces surface leakage and improves long-term stability under humidity and bias stress |
| MSL Level 1 | Compatible with standard 260 °C peak reflow profiles without preconditioning |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for automotive and industrial OEM supply chains |
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: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive input stages. Use Value: Clamps 400 W surges to ≤30.6 V while maintaining 18.8 V operating margin - preventing latch-up or damage in AEC-Q100 qualified signal conditioners. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input channels, absorbing repetitive inductive spikes without degradation. Use Value: Sustains 185 °C junction temperature and 40 A surge rating - enabling reliable operation in uncooled control cabinets near variable frequency drives. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression on 12–24 V DC outputs of wall adapters and USB-PD auxiliary supplies. IC Role / Device Role / Timing Role: Fast-response clamp on regulated output rail to prevent overvoltage damage to connected devices during regulator fault conditions. Use Value: 3.5 V forward voltage at 25 A ensures minimal conduction loss during sustained overloads - preserving efficiency while delivering fail-safe shutdown behavior. | Use Scenario: Surge protection on Ethernet PHY power pins and auxiliary bias rails in PoE-powered network switches and base stations. IC Role / Device Role / Timing Role: Primary-level TVS on isolated DC-DC converter inputs to absorb lightning-induced common-mode surges coupled onto telecom infrastructure. Use Value: 400 W pulse rating and 0.084 %/°C VBR tempco ensure consistent clamping across wide ambient ranges - critical for outdoor telecom equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W (same), non-AEC-Q101 rated, MSL Level 1 confirmed | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| TPSMA22AHE3_B/H | Identical electrical specs and package, but RoHS-compliant with lead-free plating only (no halogen-free claim) | Not halogen-free; may not meet Tier 1 automotive material declarations | Choose when halogen-free compliance is not mandated but AEC-Q101 and RoHS are required |
Compared with SMAJ22A and TPSMA22AHE3_B/H, the TPSMA22AHM3_B/H uniquely combines halogen-free construction, AEC-Q101 qualification, and 185 °C junction rating - making it the only option qualified for next-generation automotive power domain controllers requiring full material compliance and extended thermal operation.
Availability
TPSMA22AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter outputs, and telecom line interface circuits requiring stable component supply across multi-year production cycles.
Supply support for TPSMA22AHM3_B/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 high-reliability and automotive-grade performance.
The TPSMA series belongs to Vishay's PAR® transient voltage suppressor product line, engineered specifically for high-temperature, high-surge environments in automotive power systems and industrial control applications.
FAQ
What is the maximum clamping voltage of the TPSMA22AHM3_B/H under a 400 W transient?
The TPSMA22AHM3_B/H has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated 400 W peak pulse power with a 10/1000 µs waveform. This value is measured at 13.1 A peak pulse current and ensures downstream circuitry remains within safe operating limits during surge events. The TPSMA22AHM3_B/H achieves this clamping performance while maintaining low incremental surge resistance and stable thermal behavior up to 185 °C junction temperature.
Is the TPSMA22AHM3_B/H qualified for automotive applications?
Yes, the TPSMA22AHM3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3", which denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It meets rigorous automotive reliability tests including temperature cycling, highly accelerated life testing (HALT), and electrostatic discharge (ESD) per JESD22 standards. The TPSMA22AHM3_B/H is intended for use in engine control units, ADAS sensors, and body electronics where automotive-grade qualification is mandatory.
What does the "HM3" suffix indicate in TPSMA22AHM3_B/H?
The "HM3" suffix in TPSMA22AHM3_B/H identifies the device as halogen-free, RoHS-compliant, and AEC-Q101 qualified - distinguishing it from the "HE3" variant, which is RoHS-compliant and AEC-Q101 qualified but not halogen-free. The "B/H" denotes packaging: 7-inch tape-and-reel with 1800 units per reel. This suffix directly maps to Vishay's material compliance and qualification framework, ensuring traceability for automotive Tier 1 suppliers and industrial OEMs requiring full substance declaration.
What is the standoff voltage (VWM) of the TPSMA22AHM3_B/H, and why does it matter?
The TPSMA22AHM3_B/H has a maximum working standoff voltage (VWM) of 18.8 V, meaning it remains in high-impedance blocking mode below this voltage with ≤1.0 µA reverse leakage. This parameter ensures compatibility with 18 V nominal systems (e.g., automotive 12 V + load dump margin) while providing sufficient headroom above normal operating voltage to avoid false triggering. Selecting a TVS with appropriate VWM prevents unnecessary conduction during normal operation - a critical design consideration for the TPSMA22AHM3_B/H in always-on automotive modules.
Can the TPSMA22AHM3_B/H be used in place of TPSMA22AHE3_B/H?
The TPSMA22AHM3_B/H can serve as a direct functional replacement for TPSMA22AHE3_B/H in most designs, as both share identical electrical specifications, package (SMA), and AEC-Q101 qualification. However, the TPSMA22AHM3_B/H adds halogen-free construction - required for certain automotive Tier 1 material declarations - whereas the HE3 version is RoHS-compliant but not halogen-free. No PCB layout change is needed, but material compliance documentation must be updated when substituting TPSMA22AHM3_B/H for TPSMA22AHE3_B/H.
TPSMA22AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 13.1A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA22AHM3_B/H FAQ
1.How can I place an order for TPSMA22AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA22AHM3_B/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 TPSMA22AHM3_B/H reliable?
The price and inventory of TPSMA22AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA22AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA22AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA22AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA22AHM3_B/H?
TPSMA22AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA22AHM3_B/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 TPSMA22AHM3_B/H?
For technical support, including TPSMA22AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA22AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA22AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA22AHM3_B/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 TPSMA22AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA22AHM3_B/H?
All TPSMA22AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA22AHM3_B/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 TPSMA22AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA22AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA22AHM3_B/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 …
